Updating dependancies. (#9303)

Gopkg.lock

@@ -17,7 +17,7 @@
   branch = "master"
   name = "github.com/avct/uasurfer"
   packages = ["."]
-  revision = "c4be5581ec9617d04f5c5e02b893903ead0b1eed"
+  revision = "dc0ec4fd1e875e7ad39d8c932a198d41dd7637d0"
 
 [[projects]]
   branch = "master"
@@ -34,8 +34,8 @@
 [[projects]]
   name = "github.com/davecgh/go-spew"
   packages = ["spew"]
-  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
+  revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
-  version = "v1.1.0"
+  version = "v1.1.1"
 
 [[projects]]
   branch = "master"
@@ -46,8 +46,8 @@
 [[projects]]
   name = "github.com/disintegration/imaging"
   packages = ["."]
-  revision = "bbcee2f5c9d5e94ca42c8b50ec847fec64a6c134"
+  revision = "0bd5694c78c9c3d9a3cd06a706a8f3c59296a9ac"
-  version = "v1.4.2"
+  version = "v1.5.0"
 
 [[projects]]
   branch = "master"
@@ -70,8 +70,8 @@
 [[projects]]
   name = "github.com/go-ini/ini"
   packages = ["."]
-  revision = "358ee7663966325963d4e8b2e1fbd570c5195153"
+  revision = "5cf292cae48347c2490ac1a58fe36735fb78df7e"
-  version = "v1.38.1"
+  version = "v1.38.2"
 
 [[projects]]
   name = "github.com/go-ldap/ldap"
@@ -91,8 +91,8 @@
     "internal/singleflight",
     "internal/util"
   ]
-  revision = "83fb42932f6145ce52df09860384a4653d2d332a"
+  revision = "1614e579ed966441b8e0c3ccea1dd0fbbd93a6ae"
-  version = "v6.12.0"
+  version = "v6.14.0"
 
 [[projects]]
   branch = "master"
@@ -119,8 +119,8 @@
     "ptypes/duration",
     "ptypes/timestamp"
   ]
-  revision = "b4deda0973fb4c70b50d226b1af49f3da59f5265"
+  revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
-  version = "v1.1.0"
+  version = "v1.2.0"
 
 [[projects]]
   name = "github.com/gorilla/context"
@@ -131,8 +131,8 @@
 [[projects]]
   name = "github.com/gorilla/handlers"
   packages = ["."]
-  revision = "90663712d74cb411cbef281bc1e08c19d1a76145"
+  revision = "7e0847f9db758cdebd26c149d0ae9d5d0b9c98ce"
-  version = "v1.3.0"
+  version = "v1.4.0"
 
 [[projects]]
   name = "github.com/gorilla/mux"
@@ -150,7 +150,7 @@
   branch = "master"
   name = "github.com/gorilla/websocket"
   packages = ["."]
-  revision = "5ed622c449da6d44c3c8329331ff47a9e5844f71"
+  revision = "b378caee5b2a673abe3897c40fde529bff7b986e"
 
 [[projects]]
   branch = "master"
@@ -159,10 +159,10 @@
   revision = "7b7ae1e72eade09dbc9c2cfba3e6c4bae7b8bcac"
 
 [[projects]]
-  branch = "master"
   name = "github.com/hashicorp/errwrap"
   packages = ["."]
-  revision = "d6c0cd88035724dd42e0f335ae30161c20575ecc"
+  revision = "8a6fb523712970c966eefc6b39ed2c5e74880354"
+  version = "v1.0.0"
 
 [[projects]]
   name = "github.com/hashicorp/go-hclog"
@@ -182,10 +182,10 @@
   revision = "fa3f63826f7c23912c15263591e65d54d080b458"
 
 [[projects]]
-  branch = "master"
   name = "github.com/hashicorp/go-multierror"
   packages = ["."]
-  revision = "3d5d8f294aa03d8e98859feac328afbdf1ae0703"
+  revision = "886a7fbe3eb1c874d46f623bfa70af45f425b3d1"
+  version = "v1.0.0"
 
 [[projects]]
   name = "github.com/hashicorp/go-plugin"
@@ -228,7 +228,7 @@
   branch = "master"
   name = "github.com/hashicorp/memberlist"
   packages = ["."]
-  revision = "2288bf30e9c8d7b5f6549bf62e07120d72fd4b6c"
+  revision = "b195c8e4fcc6284fff1583fd6ab09e68ca207551"
 
 [[projects]]
   branch = "master"
@@ -261,13 +261,13 @@
   revision = "1d33003b386959af197ba96475f198c114627b5e"
 
 [[projects]]
-  branch = "master"
   name = "github.com/lib/pq"
   packages = [
     ".",
     "oid"
   ]
-  revision = "90697d60dd844d5ef6ff15135d0203f65d2f53b8"
+  revision = "4ded0e9383f75c197b3a2aaa6d590ac52df6fd79"
+  version = "v1.0.0"
 
 [[projects]]
   name = "github.com/magiconair/properties"
@@ -284,7 +284,7 @@
     "jlexer",
     "jwriter"
   ]
-  revision = "efc7eb8984d6655c26b5c9d2e65c024e5767c37c"
+  revision = "60711f1a8329503b04e1c88535f419d0bb440bff"
 
 [[projects]]
   branch = "master"
@@ -312,8 +312,8 @@
 [[projects]]
   name = "github.com/mattn/go-runewidth"
   packages = ["."]
-  revision = "9e777a8366cce605130a531d2cd6363d07ad7317"
+  revision = "ce7b0b5c7b45a81508558cd1dba6bb1e4ddb51bb"
-  version = "v0.0.2"
+  version = "v0.0.3"
 
 [[projects]]
   name = "github.com/mattn/go-sqlite3"
@@ -347,10 +347,10 @@
   version = "v6.0.5"
 
 [[projects]]
-  branch = "master"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
-  revision = "3864e76763d94a6df2f9960b16a20a33da9f9a66"
+  revision = "ae18d6b8b3205b561c79e8e5f69bff09736185f4"
+  version = "v1.0.0"
 
 [[projects]]
   branch = "master"
@@ -359,10 +359,10 @@
   revision = "a61a99592b77c9ba629d254a693acffaeb4b7e28"
 
 [[projects]]
-  branch = "master"
   name = "github.com/mitchellh/mapstructure"
   packages = ["."]
-  revision = "f15292f7a699fcc1a38a80977f80a046874ba8ac"
+  revision = "fa473d140ef3c6adf42d6b391fe76707f1f243c8"
+  version = "v1.0.0"
 
 [[projects]]
   name = "github.com/nicksnyder/go-i18n"
@@ -434,7 +434,7 @@
     "internal/bitbucket.org/ww/goautoneg",
     "model"
   ]
-  revision = "7600349dcfe1abd18d72d3a1770870d9800a7801"
+  revision = "c7de2306084e37d54b8be01f3541a8464345e9a5"
 
 [[projects]]
   branch = "master"
@@ -445,13 +445,13 @@
     "nfs",
     "xfs"
   ]
-  revision = "ae68e2d4c00fed4943b5f6698d504a5fe083da8a"
+  revision = "05ee40e3a273f7245e8777337fc7b46e533a9a92"
 
 [[projects]]
   name = "github.com/rs/cors"
   packages = ["."]
-  revision = "ca016a06a5753f8ba03029c0aa5e54afb1bf713f"
+  revision = "3fb1b69b103a84de38a19c3c6ec073dd6caa4d3f"
-  version = "v1.4.0"
+  version = "v1.5.0"
 
 [[projects]]
   branch = "go1"
@@ -483,8 +483,8 @@
 [[projects]]
   name = "github.com/sirupsen/logrus"
   packages = ["."]
-  revision = "c155da19408a8799da419ed3eeb0cb5db0ad5dbc"
+  revision = "3e01752db0189b9157070a0e1668a620f9a85da2"
-  version = "v1.0.5"
+  version = "v1.0.6"
 
 [[projects]]
   name = "github.com/spf13/afero"
@@ -511,13 +511,13 @@
   branch = "master"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
-  revision = "7c0cea34c8ece3fbeb2b27ab9b59511d360fb394"
+  revision = "14d3d4c518341bea657dd8a226f5121c0ff8c9f2"
 
 [[projects]]
   name = "github.com/spf13/pflag"
   packages = ["."]
-  revision = "583c0c0531f06d5278b7d917446061adc344b5cd"
+  revision = "9a97c102cda95a86cec2345a6f09f55a939babf5"
-  version = "v1.0.1"
+  version = "v1.0.2"
 
 [[projects]]
   branch = "master"
@@ -585,8 +585,8 @@
     "internal/exit",
     "zapcore"
   ]
-  revision = "4d45f9617f7d90f7a663ff21c7a4321dbe78098b"
+  revision = "ff33455a0e382e8a81d14dd7c922020b6b5e7982"
-  version = "v1.9.0"
+  version = "v1.9.1"
 
 [[projects]]
   branch = "master"
@@ -602,7 +602,7 @@
     "ed25519/internal/edwards25519",
     "ssh/terminal"
   ]
-  revision = "a2144134853fc9a27a7b1e3eb4f19f1a76df13c9"
+  revision = "614d502a4dac94afa3a6ce146bd1736da82514c6"
 
 [[projects]]
   branch = "master"
@@ -636,7 +636,7 @@
     "ipv6",
     "trace"
   ]
-  revision = "a680a1efc54dd51c040b3b5ce4939ea3cf2ea0d1"
+  revision = "faa378e6dbaed88bd8100f8bcf09939375c6e8fa"
 
 [[projects]]
   branch = "master"
@@ -646,7 +646,7 @@
     "unix",
     "windows"
   ]
-  revision = "ac767d655b305d4e9612f5f6e33120b9176c4ad4"
+  revision = "4910a1d54f876d7b22162a85f4d066d3ee649450"
 
 [[projects]]
   name = "golang.org/x/text"
@@ -691,7 +691,7 @@
   branch = "master"
   name = "google.golang.org/genproto"
   packages = ["googleapis/rpc/status"]
-  revision = "fedd2861243fd1a8152376292b921b394c7bef7e"
+  revision = "c66870c02cf823ceb633bcd05be3c7cda29976f4"
 
 [[projects]]
   name = "google.golang.org/grpc"
@@ -711,7 +711,9 @@
     "internal",
     "internal/backoff",
     "internal/channelz",
+    "internal/envconfig",
     "internal/grpcrand",
+    "internal/transport",
     "keepalive",
     "metadata",
     "naming",
@@ -721,11 +723,10 @@
     "resolver/passthrough",
     "stats",
     "status",
-    "tap",
+    "tap"
-    "transport"
   ]
-  revision = "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+  revision = "32fb0ac620c32ba40a4626ddf94d90d12cce3455"
-  version = "v1.13.0"
+  version = "v1.14.0"
 
 [[projects]]
   branch = "v3"
@@ -758,8 +759,8 @@
     "config",
     "uritemplates"
   ]
-  revision = "52741dc2ce53629cbe1e673869040d886cba2cd5"
+  revision = "d94782c1eadecb8e1d3dcd5f38ba533b66992ff2"
-  version = "v5.0.70"
+  version = "v5.0.74"
 
 [[projects]]
   name = "gopkg.in/yaml.v2"

vendor/github.com/avct/uasurfer/browser.go

@@ -28,6 +28,9 @@ func (u *UserAgent) evalBrowserName(ua string) bool {
 
 	if strings.Contains(ua, "applewebkit") {
 		switch {
+		case strings.Contains(ua, "googlebot"):
+			u.Browser.Name = BrowserGoogleBot
+
 		case strings.Contains(ua, "opr/") || strings.Contains(ua, "opios/"):
 			u.Browser.Name = BrowserOpera
 
@@ -189,4 +192,4 @@ func (u *UserAgent) evalBrowserVersion(ua string) {
 	case BrowserSpotify:
 		_ = u.Browser.Version.findVersionNumber(ua, "spotify/")
 	}
-}
+}

vendor/github.com/avct/uasurfer/device.go

@@ -21,7 +21,7 @@ func (u *UserAgent) evalDevice(ua string) {
 		u.DeviceType = DevicePhone
 
 	// long list of smarttv and tv dongle identifiers
-	case strings.Contains(ua, "tv") || strings.Contains(ua, "crkey") || strings.Contains(ua, "googletv") || strings.Contains(ua, "aftb") || strings.Contains(ua, "adt-") || strings.Contains(ua, "roku") || strings.Contains(ua, "viera") || strings.Contains(ua, "aquos") || strings.Contains(ua, "dtv") || strings.Contains(ua, "appletv") || strings.Contains(ua, "smarttv") || strings.Contains(ua, "tuner") || strings.Contains(ua, "smart-tv") || strings.Contains(ua, "hbbtv") || strings.Contains(ua, "netcast") || strings.Contains(ua, "vizio"):
+	case strings.Contains(ua, "tv") || strings.Contains(ua, "crkey") || strings.Contains(ua, "googletv") || strings.Contains(ua, "aftb") || strings.Contains(ua, "aftt") || strings.Contains(ua, "aftm") || strings.Contains(ua, "adt-") || strings.Contains(ua, "roku") || strings.Contains(ua, "viera") || strings.Contains(ua, "aquos") || strings.Contains(ua, "dtv") || strings.Contains(ua, "appletv") || strings.Contains(ua, "smarttv") || strings.Contains(ua, "tuner") || strings.Contains(ua, "smart-tv") || strings.Contains(ua, "hbbtv") || strings.Contains(ua, "netcast") || strings.Contains(ua, "vizio"):
 		u.DeviceType = DeviceTV
 
 	case u.OS.Name == OSAndroid:

vendor/github.com/davecgh/go-spew/LICENSE

@@ -2,7 +2,7 @@ ISC License
 
 Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
 
-Permission to use, copy, modify, and distribute this software for any
+Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
 copyright notice and this permission notice appear in all copies.
 

vendor/github.com/davecgh/go-spew/spew/bypass.go

@@ -16,7 +16,9 @@
 // when the code is not running on Google App Engine, compiled by GopherJS, and
 // "-tags safe" is not added to the go build command line.  The "disableunsafe"
 // tag is deprecated and thus should not be used.
-// +build !js,!appengine,!safe,!disableunsafe
+// Go versions prior to 1.4 are disabled because they use a different layout
+// for interfaces which make the implementation of unsafeReflectValue more complex.
+// +build !js,!appengine,!safe,!disableunsafe,go1.4
 
 package spew
 
@@ -34,80 +36,49 @@ const (
 	ptrSize = unsafe.Sizeof((*byte)(nil))
 )
 
-var (
+type flag uintptr
-	// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
-	// internal reflect.Value fields.  These values are valid before golang
-	// commit ecccf07e7f9d which changed the format.  The are also valid
-	// after commit 82f48826c6c7 which changed the format again to mirror
-	// the original format.  Code in the init function updates these offsets
-	// as necessary.
-	offsetPtr    = uintptr(ptrSize)
-	offsetScalar = uintptr(0)
-	offsetFlag   = uintptr(ptrSize * 2)
 
-	// flagKindWidth and flagKindShift indicate various bits that the
+var (
-	// reflect package uses internally to track kind information.
+	// flagRO indicates whether the value field of a reflect.Value
-	//
+	// is read-only.
-	// flagRO indicates whether or not the value field of a reflect.Value is
+	flagRO flag
-	// read-only.
+
-	//
+	// flagAddr indicates whether the address of the reflect.Value's
-	// flagIndir indicates whether the value field of a reflect.Value is
+	// value may be taken.
-	// the actual data or a pointer to the data.
+	flagAddr flag
-	//
-	// These values are valid before golang commit 90a7c3c86944 which
-	// changed their positions.  Code in the init function updates these
-	// flags as necessary.
-	flagKindWidth = uintptr(5)
-	flagKindShift = uintptr(flagKindWidth - 1)
-	flagRO        = uintptr(1 << 0)
-	flagIndir     = uintptr(1 << 1)
 )
 
-func init() {
+// flagKindMask holds the bits that make up the kind
-	// Older versions of reflect.Value stored small integers directly in the
+// part of the flags field. In all the supported versions,
-	// ptr field (which is named val in the older versions).  Versions
+// it is in the lower 5 bits.
-	// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
+const flagKindMask = flag(0x1f)
-	// scalar for this purpose which unfortunately came before the flag
-	// field, so the offset of the flag field is different for those
-	// versions.
-	//
-	// This code constructs a new reflect.Value from a known small integer
-	// and checks if the size of the reflect.Value struct indicates it has
-	// the scalar field. When it does, the offsets are updated accordingly.
-	vv := reflect.ValueOf(0xf00)
-	if unsafe.Sizeof(vv) == (ptrSize * 4) {
-		offsetScalar = ptrSize * 2
-		offsetFlag = ptrSize * 3
-	}
 
-	// Commit 90a7c3c86944 changed the flag positions such that the low
+// Different versions of Go have used different
-	// order bits are the kind.  This code extracts the kind from the flags
+// bit layouts for the flags type. This table
-	// field and ensures it's the correct type.  When it's not, the flag
+// records the known combinations.
-	// order has been changed to the newer format, so the flags are updated
+var okFlags = []struct {
-	// accordingly.
+	ro, addr flag
-	upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
+}{{
-	upfv := *(*uintptr)(upf)
+	// From Go 1.4 to 1.5
-	flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
+	ro:   1 << 5,
-	if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
+	addr: 1 << 7,
-		flagKindShift = 0
+}, {
-		flagRO = 1 << 5
+	// Up to Go tip.
-		flagIndir = 1 << 6
+	ro:   1<<5 | 1<<6,
+	addr: 1 << 8,
+}}
 
-		// Commit adf9b30e5594 modified the flags to separate the
+var flagValOffset = func() uintptr {
-		// flagRO flag into two bits which specifies whether or not the
+	field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
-		// field is embedded.  This causes flagIndir to move over a bit
+	if !ok {
-		// and means that flagRO is the combination of either of the
+		panic("reflect.Value has no flag field")
-		// original flagRO bit and the new bit.
-		//
-		// This code detects the change by extracting what used to be
-		// the indirect bit to ensure it's set.  When it's not, the flag
-		// order has been changed to the newer format, so the flags are
-		// updated accordingly.
-		if upfv&flagIndir == 0 {
-			flagRO = 3 << 5
-			flagIndir = 1 << 7
-		}
 	}
+	return field.Offset
+}()
+
+// flagField returns a pointer to the flag field of a reflect.Value.
+func flagField(v *reflect.Value) *flag {
+	return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
 }
 
 // unsafeReflectValue converts the passed reflect.Value into a one that bypasses
@@ -119,34 +90,56 @@ func init() {
 // This allows us to check for implementations of the Stringer and error
 // interfaces to be used for pretty printing ordinarily unaddressable and
 // inaccessible values such as unexported struct fields.
-func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
+func unsafeReflectValue(v reflect.Value) reflect.Value {
-	indirects := 1
+	if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
-	vt := v.Type()
+		return v
-	upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
+	}
-	rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
+	flagFieldPtr := flagField(&v)
-	if rvf&flagIndir != 0 {
+	*flagFieldPtr &^= flagRO
-		vt = reflect.PtrTo(v.Type())
+	*flagFieldPtr |= flagAddr
-		indirects++
+	return v
-	} else if offsetScalar != 0 {
+}
-		// The value is in the scalar field when it's not one of the
+
-		// reference types.
+// Sanity checks against future reflect package changes
-		switch vt.Kind() {
+// to the type or semantics of the Value.flag field.
-		case reflect.Uintptr:
+func init() {
-		case reflect.Chan:
+	field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
-		case reflect.Func:
+	if !ok {
-		case reflect.Map:
+		panic("reflect.Value has no flag field")
-		case reflect.Ptr:
+	}
-		case reflect.UnsafePointer:
+	if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
-		default:
+		panic("reflect.Value flag field has changed kind")
-			upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
+	}
-				offsetScalar)
+	type t0 int
+	var t struct {
+		A t0
+		// t0 will have flagEmbedRO set.
+		t0
+		// a will have flagStickyRO set
+		a t0
+	}
+	vA := reflect.ValueOf(t).FieldByName("A")
+	va := reflect.ValueOf(t).FieldByName("a")
+	vt0 := reflect.ValueOf(t).FieldByName("t0")
+
+	// Infer flagRO from the difference between the flags
+	// for the (otherwise identical) fields in t.
+	flagPublic := *flagField(&vA)
+	flagWithRO := *flagField(&va) | *flagField(&vt0)
+	flagRO = flagPublic ^ flagWithRO
+
+	// Infer flagAddr from the difference between a value
+	// taken from a pointer and not.
+	vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
+	flagNoPtr := *flagField(&vA)
+	flagPtr := *flagField(&vPtrA)
+	flagAddr = flagNoPtr ^ flagPtr
+
+	// Check that the inferred flags tally with one of the known versions.
+	for _, f := range okFlags {
+		if flagRO == f.ro && flagAddr == f.addr {
+			return
 		}
 	}
-
+	panic("reflect.Value read-only flag has changed semantics")
-	pv := reflect.NewAt(vt, upv)
-	rv = pv
-	for i := 0; i < indirects; i++ {
-		rv = rv.Elem()
-	}
-	return rv
 }

vendor/github.com/davecgh/go-spew/spew/bypasssafe.go

@@ -16,7 +16,7 @@
 // when the code is running on Google App Engine, compiled by GopherJS, or
 // "-tags safe" is added to the go build command line.  The "disableunsafe"
 // tag is deprecated and thus should not be used.
-// +build js appengine safe disableunsafe
+// +build js appengine safe disableunsafe !go1.4
 
 package spew
 

vendor/github.com/davecgh/go-spew/spew/common.go

@@ -180,7 +180,7 @@ func printComplex(w io.Writer, c complex128, floatPrecision int) {
 	w.Write(closeParenBytes)
 }
 
-// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
+// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
 // prefix to Writer w.
 func printHexPtr(w io.Writer, p uintptr) {
 	// Null pointer.

vendor/github.com/davecgh/go-spew/spew/dump.go

@@ -35,16 +35,16 @@ var (
 
 	// cCharRE is a regular expression that matches a cgo char.
 	// It is used to detect character arrays to hexdump them.
-	cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
+	cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
 
 	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
 	// char.  It is used to detect unsigned character arrays to hexdump
 	// them.
-	cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
+	cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
 
 	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
 	// It is used to detect uint8_t arrays to hexdump them.
-	cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
+	cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
 )
 
 // dumpState contains information about the state of a dump operation.
@@ -143,10 +143,10 @@ func (d *dumpState) dumpPtr(v reflect.Value) {
 	// Display dereferenced value.
 	d.w.Write(openParenBytes)
 	switch {
-	case nilFound == true:
+	case nilFound:
 		d.w.Write(nilAngleBytes)
 
-	case cycleFound == true:
+	case cycleFound:
 		d.w.Write(circularBytes)
 
 	default:

vendor/github.com/davecgh/go-spew/spew/format.go

@@ -182,10 +182,10 @@ func (f *formatState) formatPtr(v reflect.Value) {
 
 	// Display dereferenced value.
 	switch {
-	case nilFound == true:
+	case nilFound:
 		f.fs.Write(nilAngleBytes)
 
-	case cycleFound == true:
+	case cycleFound:
 		f.fs.Write(circularShortBytes)
 
 	default:

vendor/github.com/disintegration/imaging/effects.go

@@ -38,9 +38,13 @@ func blurHorizontal(img image.Image, kernel []float64) *image.NRGBA {
 
 	parallel(0, src.h, func(ys <-chan int) {
 		scanLine := make([]uint8, src.w*4)
+		scanLineF := make([]float64, len(scanLine))
 		for y := range ys {
 			src.scan(0, y, src.w, y+1, scanLine)
-			for x := 0; x < src.w; x++ {
+			for i, v := range scanLine {
+				scanLineF[i] = float64(v)
+			}
+			for x, idx := 0, 0; x < src.w; x, idx = x+1, idx+4 {
 				min := x - radius
 				if min < 0 {
 					min = 0
@@ -55,10 +59,10 @@ func blurHorizontal(img image.Image, kernel []float64) *image.NRGBA {
 					i := ix * 4
 					weight := kernel[absint(x-ix)]
 					wsum += weight
-					wa := float64(scanLine[i+3]) * weight
+					wa := scanLineF[i+3] * weight
-					r += float64(scanLine[i+0]) * wa
+					r += scanLineF[i+0] * wa
-					g += float64(scanLine[i+1]) * wa
+					g += scanLineF[i+1] * wa
-					b += float64(scanLine[i+2]) * wa
+					b += scanLineF[i+2] * wa
 					a += wa
 				}
 				if a != 0 {
@@ -67,12 +71,12 @@ func blurHorizontal(img image.Image, kernel []float64) *image.NRGBA {
 					b /= a
 				}
 
-				j := y*dst.Stride + x*4
+				scanLine[idx+0] = clamp(r)
-				dst.Pix[j+0] = clamp(r)
+				scanLine[idx+1] = clamp(g)
-				dst.Pix[j+1] = clamp(g)
+				scanLine[idx+2] = clamp(b)
-				dst.Pix[j+2] = clamp(b)
+				scanLine[idx+3] = clamp(a / wsum)
-				dst.Pix[j+3] = clamp(a / wsum)
 			}
+			copy(dst.Pix[y*dst.Stride:], scanLine)
 		}
 	})
 
@@ -86,8 +90,12 @@ func blurVertical(img image.Image, kernel []float64) *image.NRGBA {
 
 	parallel(0, src.w, func(xs <-chan int) {
 		scanLine := make([]uint8, src.h*4)
+		scanLineF := make([]float64, len(scanLine))
 		for x := range xs {
 			src.scan(x, 0, x+1, src.h, scanLine)
+			for i, v := range scanLine {
+				scanLineF[i] = float64(v)
+			}
 			for y := 0; y < src.h; y++ {
 				min := y - radius
 				if min < 0 {
@@ -103,10 +111,10 @@ func blurVertical(img image.Image, kernel []float64) *image.NRGBA {
 					i := iy * 4
 					weight := kernel[absint(y-iy)]
 					wsum += weight
-					wa := float64(scanLine[i+3]) * weight
+					wa := scanLineF[i+3] * weight
-					r += float64(scanLine[i+0]) * wa
+					r += scanLineF[i+0] * wa
-					g += float64(scanLine[i+1]) * wa
+					g += scanLineF[i+1] * wa
-					b += float64(scanLine[i+2]) * wa
+					b += scanLineF[i+2] * wa
 					a += wa
 				}
 				if a != 0 {

vendor/github.com/disintegration/imaging/helpers.go

@@ -1,272 +0,0 @@
-package imaging
-
-import (
-	"bytes"
-	"errors"
-	"image"
-	"image/color"
-	"image/draw"
-	"image/gif"
-	"image/jpeg"
-	"image/png"
-	"io"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"golang.org/x/image/bmp"
-	"golang.org/x/image/tiff"
-)
-
-// Format is an image file format.
-type Format int
-
-// Image file formats.
-const (
-	JPEG Format = iota
-	PNG
-	GIF
-	TIFF
-	BMP
-)
-
-func (f Format) String() string {
-	switch f {
-	case JPEG:
-		return "JPEG"
-	case PNG:
-		return "PNG"
-	case GIF:
-		return "GIF"
-	case TIFF:
-		return "TIFF"
-	case BMP:
-		return "BMP"
-	default:
-		return "Unsupported"
-	}
-}
-
-var formatFromExt = map[string]Format{
-	".jpg":  JPEG,
-	".jpeg": JPEG,
-	".png":  PNG,
-	".tif":  TIFF,
-	".tiff": TIFF,
-	".bmp":  BMP,
-	".gif":  GIF,
-}
-
-// FormatFromFilename parses image format from filename extension:
-// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
-func FormatFromFilename(filename string) (Format, error) {
-	ext := strings.ToLower(filepath.Ext(filename))
-	if f, ok := formatFromExt[ext]; ok {
-		return f, nil
-	}
-	return -1, ErrUnsupportedFormat
-}
-
-var (
-	// ErrUnsupportedFormat means the given image format (or file extension) is unsupported.
-	ErrUnsupportedFormat = errors.New("imaging: unsupported image format")
-)
-
-type fileSystem interface {
-	Create(string) (io.WriteCloser, error)
-	Open(string) (io.ReadCloser, error)
-}
-
-type localFS struct{}
-
-func (localFS) Create(name string) (io.WriteCloser, error) { return os.Create(name) }
-func (localFS) Open(name string) (io.ReadCloser, error)    { return os.Open(name) }
-
-var fs fileSystem = localFS{}
-
-// Decode reads an image from r.
-func Decode(r io.Reader) (image.Image, error) {
-	img, _, err := image.Decode(r)
-	return img, err
-}
-
-// Open loads an image from file
-func Open(filename string) (image.Image, error) {
-	file, err := fs.Open(filename)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-	return Decode(file)
-}
-
-type encodeConfig struct {
-	jpegQuality         int
-	gifNumColors        int
-	gifQuantizer        draw.Quantizer
-	gifDrawer           draw.Drawer
-	pngCompressionLevel png.CompressionLevel
-}
-
-var defaultEncodeConfig = encodeConfig{
-	jpegQuality:         95,
-	gifNumColors:        256,
-	gifQuantizer:        nil,
-	gifDrawer:           nil,
-	pngCompressionLevel: png.DefaultCompression,
-}
-
-// EncodeOption sets an optional parameter for the Encode and Save functions.
-type EncodeOption func(*encodeConfig)
-
-// JPEGQuality returns an EncodeOption that sets the output JPEG quality.
-// Quality ranges from 1 to 100 inclusive, higher is better. Default is 95.
-func JPEGQuality(quality int) EncodeOption {
-	return func(c *encodeConfig) {
-		c.jpegQuality = quality
-	}
-}
-
-// GIFNumColors returns an EncodeOption that sets the maximum number of colors
-// used in the GIF-encoded image. It ranges from 1 to 256.  Default is 256.
-func GIFNumColors(numColors int) EncodeOption {
-	return func(c *encodeConfig) {
-		c.gifNumColors = numColors
-	}
-}
-
-// GIFQuantizer returns an EncodeOption that sets the quantizer that is used to produce
-// a palette of the GIF-encoded image.
-func GIFQuantizer(quantizer draw.Quantizer) EncodeOption {
-	return func(c *encodeConfig) {
-		c.gifQuantizer = quantizer
-	}
-}
-
-// GIFDrawer returns an EncodeOption that sets the drawer that is used to convert
-// the source image to the desired palette of the GIF-encoded image.
-func GIFDrawer(drawer draw.Drawer) EncodeOption {
-	return func(c *encodeConfig) {
-		c.gifDrawer = drawer
-	}
-}
-
-// PNGCompressionLevel returns an EncodeOption that sets the compression level
-// of the PNG-encoded image. Default is png.DefaultCompression.
-func PNGCompressionLevel(level png.CompressionLevel) EncodeOption {
-	return func(c *encodeConfig) {
-		c.pngCompressionLevel = level
-	}
-}
-
-// Encode writes the image img to w in the specified format (JPEG, PNG, GIF, TIFF or BMP).
-func Encode(w io.Writer, img image.Image, format Format, opts ...EncodeOption) error {
-	cfg := defaultEncodeConfig
-	for _, option := range opts {
-		option(&cfg)
-	}
-
-	var err error
-	switch format {
-	case JPEG:
-		var rgba *image.RGBA
-		if nrgba, ok := img.(*image.NRGBA); ok {
-			if nrgba.Opaque() {
-				rgba = &image.RGBA{
-					Pix:    nrgba.Pix,
-					Stride: nrgba.Stride,
-					Rect:   nrgba.Rect,
-				}
-			}
-		}
-		if rgba != nil {
-			err = jpeg.Encode(w, rgba, &jpeg.Options{Quality: cfg.jpegQuality})
-		} else {
-			err = jpeg.Encode(w, img, &jpeg.Options{Quality: cfg.jpegQuality})
-		}
-
-	case PNG:
-		enc := png.Encoder{CompressionLevel: cfg.pngCompressionLevel}
-		err = enc.Encode(w, img)
-
-	case GIF:
-		err = gif.Encode(w, img, &gif.Options{
-			NumColors: cfg.gifNumColors,
-			Quantizer: cfg.gifQuantizer,
-			Drawer:    cfg.gifDrawer,
-		})
-
-	case TIFF:
-		err = tiff.Encode(w, img, &tiff.Options{Compression: tiff.Deflate, Predictor: true})
-
-	case BMP:
-		err = bmp.Encode(w, img)
-
-	default:
-		err = ErrUnsupportedFormat
-	}
-	return err
-}
-
-// Save saves the image to file with the specified filename.
-// The format is determined from the filename extension: "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
-//
-// Examples:
-//
-//	// Save the image as PNG.
-//	err := imaging.Save(img, "out.png")
-//
-//	// Save the image as JPEG with optional quality parameter set to 80.
-//	err := imaging.Save(img, "out.jpg", imaging.JPEGQuality(80))
-//
-func Save(img image.Image, filename string, opts ...EncodeOption) (err error) {
-	f, err := FormatFromFilename(filename)
-	if err != nil {
-		return err
-	}
-	file, err := fs.Create(filename)
-	if err != nil {
-		return err
-	}
-
-	defer func() {
-		cerr := file.Close()
-		if err == nil {
-			err = cerr
-		}
-	}()
-
-	return Encode(file, img, f, opts...)
-}
-
-// New creates a new image with the specified width and height, and fills it with the specified color.
-func New(width, height int, fillColor color.Color) *image.NRGBA {
-	if width <= 0 || height <= 0 {
-		return &image.NRGBA{}
-	}
-
-	c := color.NRGBAModel.Convert(fillColor).(color.NRGBA)
-	if (c == color.NRGBA{0, 0, 0, 0}) {
-		return image.NewNRGBA(image.Rect(0, 0, width, height))
-	}
-
-	return &image.NRGBA{
-		Pix:    bytes.Repeat([]byte{c.R, c.G, c.B, c.A}, width*height),
-		Stride: 4 * width,
-		Rect:   image.Rect(0, 0, width, height),
-	}
-}
-
-// Clone returns a copy of the given image.
-func Clone(img image.Image) *image.NRGBA {
-	src := newScanner(img)
-	dst := image.NewNRGBA(image.Rect(0, 0, src.w, src.h))
-	size := src.w * 4
-	parallel(0, src.h, func(ys <-chan int) {
-		for y := range ys {
-			i := y * dst.Stride
-			src.scan(0, y, src.w, y+1, dst.Pix[i:i+size])
-		}
-	})
-	return dst
-}

vendor/github.com/disintegration/imaging/io.go

@@ -0,0 +1,463 @@
+package imaging
+
+import (
+	"encoding/binary"
+	"errors"
+	"image"
+	"image/draw"
+	"image/gif"
+	"image/jpeg"
+	"image/png"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"golang.org/x/image/bmp"
+	"golang.org/x/image/tiff"
+)
+
+// Format is an image file format.
+type Format int
+
+// Image file formats.
+const (
+	JPEG Format = iota
+	PNG
+	GIF
+	TIFF
+	BMP
+)
+
+func (f Format) String() string {
+	switch f {
+	case JPEG:
+		return "JPEG"
+	case PNG:
+		return "PNG"
+	case GIF:
+		return "GIF"
+	case TIFF:
+		return "TIFF"
+	case BMP:
+		return "BMP"
+	default:
+		return "Unsupported"
+	}
+}
+
+var formatFromExt = map[string]Format{
+	"jpg":  JPEG,
+	"jpeg": JPEG,
+	"png":  PNG,
+	"tif":  TIFF,
+	"tiff": TIFF,
+	"bmp":  BMP,
+	"gif":  GIF,
+}
+
+// FormatFromExtension parses image format from extension:
+// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
+func FormatFromExtension(ext string) (Format, error) {
+	if f, ok := formatFromExt[strings.ToLower(strings.TrimPrefix(ext, "."))]; ok {
+		return f, nil
+	}
+	return -1, ErrUnsupportedFormat
+}
+
+// FormatFromFilename parses image format from filename extension:
+// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
+func FormatFromFilename(filename string) (Format, error) {
+	ext := filepath.Ext(filename)
+	return FormatFromExtension(ext)
+}
+
+var (
+	// ErrUnsupportedFormat means the given image format (or file extension) is unsupported.
+	ErrUnsupportedFormat = errors.New("imaging: unsupported image format")
+)
+
+type fileSystem interface {
+	Create(string) (io.WriteCloser, error)
+	Open(string) (io.ReadCloser, error)
+}
+
+type localFS struct{}
+
+func (localFS) Create(name string) (io.WriteCloser, error) { return os.Create(name) }
+func (localFS) Open(name string) (io.ReadCloser, error)    { return os.Open(name) }
+
+var fs fileSystem = localFS{}
+
+type decodeConfig struct {
+	autoOrientation bool
+}
+
+var defaultDecodeConfig = decodeConfig{
+	autoOrientation: false,
+}
+
+// DecodeOption sets an optional parameter for the Decode and Open functions.
+type DecodeOption func(*decodeConfig)
+
+// AutoOrientation returns a DecodeOption that sets the auto-orientation mode.
+// If auto-orientation is enabled, the image will be transformed after decoding
+// according to the EXIF orientation tag (if present). By default it's disabled.
+func AutoOrientation(enabled bool) DecodeOption {
+	return func(c *decodeConfig) {
+		c.autoOrientation = enabled
+	}
+}
+
+// Decode reads an image from r.
+func Decode(r io.Reader, opts ...DecodeOption) (image.Image, error) {
+	cfg := defaultDecodeConfig
+	for _, option := range opts {
+		option(&cfg)
+	}
+
+	if !cfg.autoOrientation {
+		img, _, err := image.Decode(r)
+		return img, err
+	}
+
+	var orient orientation
+	pr, pw := io.Pipe()
+	r = io.TeeReader(r, pw)
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		orient = readOrientation(pr)
+		io.Copy(ioutil.Discard, pr)
+	}()
+
+	img, _, err := image.Decode(r)
+	pw.Close()
+	<-done
+	if err != nil {
+		return nil, err
+	}
+
+	return fixOrientation(img, orient), nil
+}
+
+// Open loads an image from file.
+//
+// Examples:
+//
+//	// Load an image from file.
+//	img, err := imaging.Open("test.jpg")
+//
+//	// Load an image and transform it depending on the EXIF orientation tag (if present).
+//	img, err := imaging.Open("test.jpg", imaging.AutoOrientation(true))
+//
+func Open(filename string, opts ...DecodeOption) (image.Image, error) {
+	file, err := fs.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+	return Decode(file, opts...)
+}
+
+type encodeConfig struct {
+	jpegQuality         int
+	gifNumColors        int
+	gifQuantizer        draw.Quantizer
+	gifDrawer           draw.Drawer
+	pngCompressionLevel png.CompressionLevel
+}
+
+var defaultEncodeConfig = encodeConfig{
+	jpegQuality:         95,
+	gifNumColors:        256,
+	gifQuantizer:        nil,
+	gifDrawer:           nil,
+	pngCompressionLevel: png.DefaultCompression,
+}
+
+// EncodeOption sets an optional parameter for the Encode and Save functions.
+type EncodeOption func(*encodeConfig)
+
+// JPEGQuality returns an EncodeOption that sets the output JPEG quality.
+// Quality ranges from 1 to 100 inclusive, higher is better. Default is 95.
+func JPEGQuality(quality int) EncodeOption {
+	return func(c *encodeConfig) {
+		c.jpegQuality = quality
+	}
+}
+
+// GIFNumColors returns an EncodeOption that sets the maximum number of colors
+// used in the GIF-encoded image. It ranges from 1 to 256.  Default is 256.
+func GIFNumColors(numColors int) EncodeOption {
+	return func(c *encodeConfig) {
+		c.gifNumColors = numColors
+	}
+}
+
+// GIFQuantizer returns an EncodeOption that sets the quantizer that is used to produce
+// a palette of the GIF-encoded image.
+func GIFQuantizer(quantizer draw.Quantizer) EncodeOption {
+	return func(c *encodeConfig) {
+		c.gifQuantizer = quantizer
+	}
+}
+
+// GIFDrawer returns an EncodeOption that sets the drawer that is used to convert
+// the source image to the desired palette of the GIF-encoded image.
+func GIFDrawer(drawer draw.Drawer) EncodeOption {
+	return func(c *encodeConfig) {
+		c.gifDrawer = drawer
+	}
+}
+
+// PNGCompressionLevel returns an EncodeOption that sets the compression level
+// of the PNG-encoded image. Default is png.DefaultCompression.
+func PNGCompressionLevel(level png.CompressionLevel) EncodeOption {
+	return func(c *encodeConfig) {
+		c.pngCompressionLevel = level
+	}
+}
+
+// Encode writes the image img to w in the specified format (JPEG, PNG, GIF, TIFF or BMP).
+func Encode(w io.Writer, img image.Image, format Format, opts ...EncodeOption) error {
+	cfg := defaultEncodeConfig
+	for _, option := range opts {
+		option(&cfg)
+	}
+
+	var err error
+	switch format {
+	case JPEG:
+		var rgba *image.RGBA
+		if nrgba, ok := img.(*image.NRGBA); ok {
+			if nrgba.Opaque() {
+				rgba = &image.RGBA{
+					Pix:    nrgba.Pix,
+					Stride: nrgba.Stride,
+					Rect:   nrgba.Rect,
+				}
+			}
+		}
+		if rgba != nil {
+			err = jpeg.Encode(w, rgba, &jpeg.Options{Quality: cfg.jpegQuality})
+		} else {
+			err = jpeg.Encode(w, img, &jpeg.Options{Quality: cfg.jpegQuality})
+		}
+
+	case PNG:
+		enc := png.Encoder{CompressionLevel: cfg.pngCompressionLevel}
+		err = enc.Encode(w, img)
+
+	case GIF:
+		err = gif.Encode(w, img, &gif.Options{
+			NumColors: cfg.gifNumColors,
+			Quantizer: cfg.gifQuantizer,
+			Drawer:    cfg.gifDrawer,
+		})
+
+	case TIFF:
+		err = tiff.Encode(w, img, &tiff.Options{Compression: tiff.Deflate, Predictor: true})
+
+	case BMP:
+		err = bmp.Encode(w, img)
+
+	default:
+		err = ErrUnsupportedFormat
+	}
+	return err
+}
+
+// Save saves the image to file with the specified filename.
+// The format is determined from the filename extension:
+// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
+//
+// Examples:
+//
+//	// Save the image as PNG.
+//	err := imaging.Save(img, "out.png")
+//
+//	// Save the image as JPEG with optional quality parameter set to 80.
+//	err := imaging.Save(img, "out.jpg", imaging.JPEGQuality(80))
+//
+func Save(img image.Image, filename string, opts ...EncodeOption) (err error) {
+	f, err := FormatFromFilename(filename)
+	if err != nil {
+		return err
+	}
+	file, err := fs.Create(filename)
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		cerr := file.Close()
+		if err == nil {
+			err = cerr
+		}
+	}()
+
+	return Encode(file, img, f, opts...)
+}
+
+// orientation is an EXIF flag that specifies the transformation
+// that should be applied to image to display it correctly.
+type orientation int
+
+const (
+	orientationUnspecified = 0
+	orientationNormal      = 1
+	orientationFlipH       = 2
+	orientationRotate180   = 3
+	orientationFlipV       = 4
+	orientationTranspose   = 5
+	orientationRotate270   = 6
+	orientationTransverse  = 7
+	orientationRotate90    = 8
+)
+
+// readOrientation tries to read the orientation EXIF flag from image data in r.
+// If the EXIF data block is not found or the orientation flag is not found
+// or any other error occures while reading the data, it returns the
+// orientationUnspecified (0) value.
+func readOrientation(r io.Reader) orientation {
+	const (
+		markerSOI      = 0xffd8
+		markerAPP1     = 0xffe1
+		exifHeader     = 0x45786966
+		byteOrderBE    = 0x4d4d
+		byteOrderLE    = 0x4949
+		orientationTag = 0x0112
+	)
+
+	// Check if JPEG SOI marker is present.
+	var soi uint16
+	if err := binary.Read(r, binary.BigEndian, &soi); err != nil {
+		return orientationUnspecified
+	}
+	if soi != markerSOI {
+		return orientationUnspecified // Missing JPEG SOI marker.
+	}
+
+	// Find JPEG APP1 marker.
+	for {
+		var marker, size uint16
+		if err := binary.Read(r, binary.BigEndian, &marker); err != nil {
+			return orientationUnspecified
+		}
+		if err := binary.Read(r, binary.BigEndian, &size); err != nil {
+			return orientationUnspecified
+		}
+		if marker>>8 != 0xff {
+			return orientationUnspecified // Invalid JPEG marker.
+		}
+		if marker == markerAPP1 {
+			break
+		}
+		if size < 2 {
+			return orientationUnspecified // Invalid block size.
+		}
+		if _, err := io.CopyN(ioutil.Discard, r, int64(size-2)); err != nil {
+			return orientationUnspecified
+		}
+	}
+
+	// Check if EXIF header is present.
+	var header uint32
+	if err := binary.Read(r, binary.BigEndian, &header); err != nil {
+		return orientationUnspecified
+	}
+	if header != exifHeader {
+		return orientationUnspecified
+	}
+	if _, err := io.CopyN(ioutil.Discard, r, 2); err != nil {
+		return orientationUnspecified
+	}
+
+	// Read byte order information.
+	var (
+		byteOrderTag uint16
+		byteOrder    binary.ByteOrder
+	)
+	if err := binary.Read(r, binary.BigEndian, &byteOrderTag); err != nil {
+		return orientationUnspecified
+	}
+	switch byteOrderTag {
+	case byteOrderBE:
+		byteOrder = binary.BigEndian
+	case byteOrderLE:
+		byteOrder = binary.LittleEndian
+	default:
+		return orientationUnspecified // Invalid byte order flag.
+	}
+	if _, err := io.CopyN(ioutil.Discard, r, 2); err != nil {
+		return orientationUnspecified
+	}
+
+	// Skip the EXIF offset.
+	var offset uint32
+	if err := binary.Read(r, byteOrder, &offset); err != nil {
+		return orientationUnspecified
+	}
+	if offset < 8 {
+		return orientationUnspecified // Invalid offset value.
+	}
+	if _, err := io.CopyN(ioutil.Discard, r, int64(offset-8)); err != nil {
+		return orientationUnspecified
+	}
+
+	// Read the number of tags.
+	var numTags uint16
+	if err := binary.Read(r, byteOrder, &numTags); err != nil {
+		return orientationUnspecified
+	}
+
+	// Find the orientation tag.
+	for i := 0; i < int(numTags); i++ {
+		var tag uint16
+		if err := binary.Read(r, byteOrder, &tag); err != nil {
+			return orientationUnspecified
+		}
+		if tag != orientationTag {
+			if _, err := io.CopyN(ioutil.Discard, r, 10); err != nil {
+				return orientationUnspecified
+			}
+			continue
+		}
+		if _, err := io.CopyN(ioutil.Discard, r, 6); err != nil {
+			return orientationUnspecified
+		}
+		var val uint16
+		if err := binary.Read(r, byteOrder, &val); err != nil {
+			return orientationUnspecified
+		}
+		if val < 1 || val > 8 {
+			return orientationUnspecified // Invalid tag value.
+		}
+		return orientation(val)
+	}
+	return orientationUnspecified // Missing orientation tag.
+}
+
+// fixOrientation applies a transform to img corresponding to the given orientation flag.
+func fixOrientation(img image.Image, o orientation) image.Image {
+	switch o {
+	case orientationNormal:
+	case orientationFlipH:
+		img = FlipH(img)
+	case orientationFlipV:
+		img = FlipV(img)
+	case orientationRotate90:
+		img = Rotate90(img)
+	case orientationRotate180:
+		img = Rotate180(img)
+	case orientationRotate270:
+		img = Rotate270(img)
+	case orientationTranspose:
+		img = Transpose(img)
+	case orientationTransverse:
+		img = Transverse(img)
+	}
+	return img
+}

vendor/github.com/disintegration/imaging/tools.go

@@ -1,10 +1,44 @@
 package imaging
 
 import (
+	"bytes"
 	"image"
+	"image/color"
 	"math"
 )
 
+// New creates a new image with the specified width and height, and fills it with the specified color.
+func New(width, height int, fillColor color.Color) *image.NRGBA {
+	if width <= 0 || height <= 0 {
+		return &image.NRGBA{}
+	}
+
+	c := color.NRGBAModel.Convert(fillColor).(color.NRGBA)
+	if (c == color.NRGBA{0, 0, 0, 0}) {
+		return image.NewNRGBA(image.Rect(0, 0, width, height))
+	}
+
+	return &image.NRGBA{
+		Pix:    bytes.Repeat([]byte{c.R, c.G, c.B, c.A}, width*height),
+		Stride: 4 * width,
+		Rect:   image.Rect(0, 0, width, height),
+	}
+}
+
+// Clone returns a copy of the given image.
+func Clone(img image.Image) *image.NRGBA {
+	src := newScanner(img)
+	dst := image.NewNRGBA(image.Rect(0, 0, src.w, src.h))
+	size := src.w * 4
+	parallel(0, src.h, func(ys <-chan int) {
+		for y := range ys {
+			i := y * dst.Stride
+			src.scan(0, y, src.w, y+1, dst.Pix[i:i+size])
+		}
+	})
+	return dst
+}
+
 // Anchor is the anchor point for image alignment.
 type Anchor int
 

vendor/github.com/go-ini/ini/file.go

@@ -237,13 +237,18 @@ func (f *File) writeToBuffer(indent string) (*bytes.Buffer, error) {
 	for i, sname := range f.sectionList {
 		sec := f.Section(sname)
 		if len(sec.Comment) > 0 {
-			if sec.Comment[0] != '#' && sec.Comment[0] != ';' {
+			// Support multiline comments
-				sec.Comment = "; " + sec.Comment
+			lines := strings.Split(sec.Comment, LineBreak)
-			} else {
+			for i := range lines {
-				sec.Comment = sec.Comment[:1] + " " + strings.TrimSpace(sec.Comment[1:])
+				if lines[i][0] != '#' && lines[i][0] != ';' {
-			}
+					lines[i] = "; " + lines[i]
-			if _, err := buf.WriteString(sec.Comment + LineBreak); err != nil {
+				} else {
-				return nil, err
+					lines[i] = lines[i][:1] + " " + strings.TrimSpace(lines[i][1:])
+				}
+
+				if _, err := buf.WriteString(lines[i] + LineBreak); err != nil {
+					return nil, err
+				}
 			}
 		}
 
@@ -300,17 +305,19 @@ func (f *File) writeToBuffer(indent string) (*bytes.Buffer, error) {
 				if len(indent) > 0 && sname != DEFAULT_SECTION {
 					buf.WriteString(indent)
 				}
-				if key.Comment[0] != '#' && key.Comment[0] != ';' {
-					key.Comment = "; " + key.Comment
-				} else {
-					key.Comment = key.Comment[:1] + " " + strings.TrimSpace(key.Comment[1:])
-				}
 
 				// Support multiline comments
-				key.Comment = strings.Replace(key.Comment, "\n", "\n; ", -1)
+				lines := strings.Split(key.Comment, LineBreak)
+				for i := range lines {
+					if lines[i][0] != '#' && lines[i][0] != ';' {
+						lines[i] = "; " + lines[i]
+					} else {
+						lines[i] = lines[i][:1] + " " + strings.TrimSpace(lines[i][1:])
+					}
 
-				if _, err := buf.WriteString(key.Comment + LineBreak); err != nil {
+					if _, err := buf.WriteString(lines[i] + LineBreak); err != nil {
-					return nil, err
+						return nil, err
+					}
 				}
 			}
 

vendor/github.com/go-ini/ini/ini.go

@@ -34,7 +34,7 @@ const (
 
 	// Maximum allowed depth when recursively substituing variable names.
 	_DEPTH_VALUES = 99
-	_VERSION      = "1.38.1"
+	_VERSION      = "1.38.2"
 )
 
 // Version returns current package version literal.
@@ -204,7 +204,7 @@ func InsensitiveLoad(source interface{}, others ...interface{}) (*File, error) {
 	return LoadSources(LoadOptions{Insensitive: true}, source, others...)
 }
 
-// InsensitiveLoad has exactly same functionality as Load function
+// ShadowLoad has exactly same functionality as Load function
 // except it allows have shadow keys.
 func ShadowLoad(source interface{}, others ...interface{}) (*File, error) {
 	return LoadSources(LoadOptions{AllowShadows: true}, source, others...)

vendor/github.com/go-redis/redis/CHANGELOG.md

@@ -0,0 +1,21 @@
+# Changelog
+
+## 6.14
+
+- Added Options.MinIdleConns.
+- Added Options.MaxConnAge.
+- PoolStats.FreeConns is renamed to PoolStats.IdleConns.
+- Add Client.Do to simplify creating custom commands.
+- Add Cmd.String, Cmd.Int, Cmd.Int64, Cmd.Uint64, Cmd.Float64, and Cmd.Bool helpers.
+- Lower memory usage.
+
+## v6.13
+
+- Ring got new options called `HashReplicas` and `Hash`. It is recommended to set `HashReplicas = 1000` for better keys distribution between shards.
+- Cluster client was optimized to use much less memory when reloading cluster state.
+- PubSub.ReceiveMessage is re-worked to not use ReceiveTimeout so it does not lose data when timeout occurres. In most cases it is recommended to use PubSub.Channel instead.
+- Dialer.KeepAlive is set to 5 minutes by default.
+
+## v6.12
+
+- ClusterClient got new option called `ClusterSlots` which allows to build cluster of normal Redis Servers that don't have cluster mode enabled. See https://godoc.org/github.com/go-redis/redis#example-NewClusterClient--ManualSetup

vendor/github.com/go-redis/redis/README.md

@@ -15,6 +15,7 @@ Supports:
 - [Timeouts](https://godoc.org/github.com/go-redis/redis#Options).
 - [Redis Sentinel](https://godoc.org/github.com/go-redis/redis#NewFailoverClient).
 - [Redis Cluster](https://godoc.org/github.com/go-redis/redis#NewClusterClient).
+- [Cluster of Redis Servers](https://godoc.org/github.com/go-redis/redis#example-NewClusterClient--ManualSetup) without using cluster mode and Redis Sentinel.
 - [Ring](https://godoc.org/github.com/go-redis/redis#NewRing).
 - [Instrumentation](https://godoc.org/github.com/go-redis/redis#ex-package--Instrumentation).
 - [Cache friendly](https://github.com/go-redis/cache).
@@ -86,25 +87,27 @@ Please go through [examples](https://godoc.org/github.com/go-redis/redis#pkg-exa
 
 Some corner cases:
 
-    SET key value EX 10 NX
+```go
-    set, err := client.SetNX("key", "value", 10*time.Second).Result()
+// SET key value EX 10 NX
+set, err := client.SetNX("key", "value", 10*time.Second).Result()
 
-    SORT list LIMIT 0 2 ASC
+// SORT list LIMIT 0 2 ASC
-    vals, err := client.Sort("list", redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result()
+vals, err := client.Sort("list", redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result()
 
-    ZRANGEBYSCORE zset -inf +inf WITHSCORES LIMIT 0 2
+// ZRANGEBYSCORE zset -inf +inf WITHSCORES LIMIT 0 2
-    vals, err := client.ZRangeByScoreWithScores("zset", redis.ZRangeBy{
+vals, err := client.ZRangeByScoreWithScores("zset", redis.ZRangeBy{
-        Min: "-inf",
+	Min: "-inf",
-        Max: "+inf",
+	Max: "+inf",
-        Offset: 0,
+	Offset: 0,
-        Count: 2,
+	Count: 2,
-    }).Result()
+}).Result()
 
-    ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3 AGGREGATE SUM
+// ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3 AGGREGATE SUM
-    vals, err := client.ZInterStore("out", redis.ZStore{Weights: []int64{2, 3}}, "zset1", "zset2").Result()
+vals, err := client.ZInterStore("out", redis.ZStore{Weights: []int64{2, 3}}, "zset1", "zset2").Result()
 
-    EVAL "return {KEYS[1],ARGV[1]}" 1 "key" "hello"
+// EVAL "return {KEYS[1],ARGV[1]}" 1 "key" "hello"
-    vals, err := client.Eval("return {KEYS[1],ARGV[1]}", []string{"key"}, "hello").Result()
+vals, err := client.Eval("return {KEYS[1],ARGV[1]}", []string{"key"}, "hello").Result()
+```
 
 ## Benchmark
 

vendor/github.com/go-redis/redis/cluster.go

@@ -8,7 +8,8 @@ import (
 	"math"
 	"math/rand"
 	"net"
-	"strings"
+	"runtime"
+	"sort"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -30,7 +31,7 @@ type ClusterOptions struct {
 
 	// The maximum number of retries before giving up. Command is retried
 	// on network errors and MOVED/ASK redirects.
-	// Default is 8.
+	// Default is 8 retries.
 	MaxRedirects int
 
 	// Enables read-only commands on slave nodes.
@@ -39,16 +40,25 @@ type ClusterOptions struct {
 	// It automatically enables ReadOnly.
 	RouteByLatency bool
 	// Allows routing read-only commands to the random master or slave node.
+	// It automatically enables ReadOnly.
 	RouteRandomly bool
 
+	// Optional function that returns cluster slots information.
+	// It is useful to manually create cluster of standalone Redis servers
+	// and load-balance read/write operations between master and slaves.
+	// It can use service like ZooKeeper to maintain configuration information
+	// and Cluster.ReloadState to manually trigger state reloading.
+	ClusterSlots func() ([]ClusterSlot, error)
+
 	// Following options are copied from Options struct.
 
 	OnConnect func(*Conn) error
 
+	Password string
+
 	MaxRetries      int
 	MinRetryBackoff time.Duration
 	MaxRetryBackoff time.Duration
-	Password        string
 
 	DialTimeout  time.Duration
 	ReadTimeout  time.Duration
@@ -56,6 +66,8 @@ type ClusterOptions struct {
 
 	// PoolSize applies per cluster node and not for the whole cluster.
 	PoolSize           int
+	MinIdleConns       int
+	MaxConnAge         time.Duration
 	PoolTimeout        time.Duration
 	IdleTimeout        time.Duration
 	IdleCheckFrequency time.Duration
@@ -70,10 +82,14 @@ func (opt *ClusterOptions) init() {
 		opt.MaxRedirects = 8
 	}
 
-	if opt.RouteByLatency {
+	if opt.RouteByLatency || opt.RouteRandomly {
 		opt.ReadOnly = true
 	}
 
+	if opt.PoolSize == 0 {
+		opt.PoolSize = 5 * runtime.NumCPU()
+	}
+
 	switch opt.ReadTimeout {
 	case -1:
 		opt.ReadTimeout = 0
@@ -117,10 +133,11 @@ func (opt *ClusterOptions) clientOptions() *Options {
 		ReadTimeout:  opt.ReadTimeout,
 		WriteTimeout: opt.WriteTimeout,
 
-		PoolSize:    opt.PoolSize,
+		PoolSize:           opt.PoolSize,
-		PoolTimeout: opt.PoolTimeout,
+		MinIdleConns:       opt.MinIdleConns,
-		IdleTimeout: opt.IdleTimeout,
+		MaxConnAge:         opt.MaxConnAge,
-
+		PoolTimeout:        opt.PoolTimeout,
+		IdleTimeout:        opt.IdleTimeout,
 		IdleCheckFrequency: disableIdleCheck,
 
 		TLSConfig: opt.TLSConfig,
@@ -160,10 +177,6 @@ func (n *clusterNode) Close() error {
 	return n.Client.Close()
 }
 
-func (n *clusterNode) Test() error {
-	return n.Client.ClusterInfo().Err()
-}
-
 func (n *clusterNode) updateLatency() {
 	const probes = 10
 
@@ -330,7 +343,7 @@ func (c *clusterNodes) GetOrCreate(addr string) (*clusterNode, error) {
 
 	v, err := c.nodeCreateGroup.Do(addr, func() (interface{}, error) {
 		node := newClusterNode(c.opt, addr)
-		return node, node.Test()
+		return node, nil
 	})
 
 	c.mu.Lock()
@@ -383,12 +396,31 @@ func (c *clusterNodes) Random() (*clusterNode, error) {
 
 //------------------------------------------------------------------------------
 
+type clusterSlot struct {
+	start, end int
+	nodes      []*clusterNode
+}
+
+type clusterSlotSlice []*clusterSlot
+
+func (p clusterSlotSlice) Len() int {
+	return len(p)
+}
+
+func (p clusterSlotSlice) Less(i, j int) bool {
+	return p[i].start < p[j].start
+}
+
+func (p clusterSlotSlice) Swap(i, j int) {
+	p[i], p[j] = p[j], p[i]
+}
+
 type clusterState struct {
 	nodes   *clusterNodes
 	Masters []*clusterNode
 	Slaves  []*clusterNode
 
-	slots [][]*clusterNode
+	slots []*clusterSlot
 
 	generation uint32
 	createdAt  time.Time
@@ -400,19 +432,21 @@ func newClusterState(
 	c := clusterState{
 		nodes: nodes,
 
-		slots: make([][]*clusterNode, hashtag.SlotNumber),
+		slots: make([]*clusterSlot, 0, len(slots)),
 
 		generation: nodes.NextGeneration(),
 		createdAt:  time.Now(),
 	}
 
-	isLoopbackOrigin := isLoopbackAddr(origin)
+	originHost, _, _ := net.SplitHostPort(origin)
+	isLoopbackOrigin := isLoopback(originHost)
+
 	for _, slot := range slots {
 		var nodes []*clusterNode
 		for i, slotNode := range slot.Nodes {
 			addr := slotNode.Addr
-			if !isLoopbackOrigin && useOriginAddr(origin, addr) {
+			if !isLoopbackOrigin {
-				addr = origin
+				addr = replaceLoopbackHost(addr, originHost)
 			}
 
 			node, err := c.nodes.GetOrCreate(addr)
@@ -430,11 +464,15 @@ func newClusterState(
 			}
 		}
 
-		for i := slot.Start; i <= slot.End; i++ {
+		c.slots = append(c.slots, &clusterSlot{
-			c.slots[i] = nodes
+			start: slot.Start,
-		}
+			end:   slot.End,
+			nodes: nodes,
+		})
 	}
 
+	sort.Sort(clusterSlotSlice(c.slots))
+
 	time.AfterFunc(time.Minute, func() {
 		nodes.GC(c.generation)
 	})
@@ -442,6 +480,33 @@ func newClusterState(
 	return &c, nil
 }
 
+func replaceLoopbackHost(nodeAddr, originHost string) string {
+	nodeHost, nodePort, err := net.SplitHostPort(nodeAddr)
+	if err != nil {
+		return nodeAddr
+	}
+
+	nodeIP := net.ParseIP(nodeHost)
+	if nodeIP == nil {
+		return nodeAddr
+	}
+
+	if !nodeIP.IsLoopback() {
+		return nodeAddr
+	}
+
+	// Use origin host which is not loopback and node port.
+	return net.JoinHostPort(originHost, nodePort)
+}
+
+func isLoopback(host string) bool {
+	ip := net.ParseIP(host)
+	if ip == nil {
+		return true
+	}
+	return ip.IsLoopback()
+}
+
 func (c *clusterState) slotMasterNode(slot int) (*clusterNode, error) {
 	nodes := c.slotNodes(slot)
 	if len(nodes) > 0 {
@@ -502,32 +567,24 @@ func (c *clusterState) slotRandomNode(slot int) *clusterNode {
 }
 
 func (c *clusterState) slotNodes(slot int) []*clusterNode {
-	if slot >= 0 && slot < len(c.slots) {
+	i := sort.Search(len(c.slots), func(i int) bool {
-		return c.slots[slot]
+		return c.slots[i].end >= slot
+	})
+	if i >= len(c.slots) {
+		return nil
+	}
+	x := c.slots[i]
+	if slot >= x.start && slot <= x.end {
+		return x.nodes
 	}
 	return nil
 }
 
 func (c *clusterState) IsConsistent() bool {
-	if len(c.Masters) > len(c.Slaves) {
+	if c.nodes.opt.ClusterSlots != nil {
-		return false
+		return true
 	}
-
+	return len(c.Masters) <= len(c.Slaves)
-	for _, master := range c.Masters {
-		s := master.Client.Info("replication").Val()
-		if !strings.Contains(s, "role:master") {
-			return false
-		}
-	}
-
-	for _, slave := range c.Slaves {
-		s := slave.Client.Info("replication").Val()
-		if !strings.Contains(s, "role:slave") {
-			return false
-		}
-	}
-
-	return true
 }
 
 //------------------------------------------------------------------------------
@@ -555,7 +612,7 @@ func (c *clusterStateHolder) Reload() (*clusterState, error) {
 		return nil, err
 	}
 	if !state.IsConsistent() {
-		c.LazyReload()
+		time.AfterFunc(time.Second, c.LazyReload)
 	}
 	return state, nil
 }
@@ -614,6 +671,14 @@ func (c *clusterStateHolder) Get() (*clusterState, error) {
 	return nil, errors.New("redis: cluster has no state")
 }
 
+func (c *clusterStateHolder) ReloadOrGet() (*clusterState, error) {
+	state, err := c.Reload()
+	if err == nil {
+		return state, nil
+	}
+	return c.Get()
+}
+
 //------------------------------------------------------------------------------
 
 // ClusterClient is a Redis Cluster client representing a pool of zero
@@ -653,6 +718,8 @@ func NewClusterClient(opt *ClusterOptions) *ClusterClient {
 	c.init()
 
 	_, _ = c.state.Reload()
+	_, _ = c.cmdsInfoCache.Get()
+
 	if opt.IdleCheckFrequency > 0 {
 		go c.reaper(opt.IdleCheckFrequency)
 	}
@@ -660,6 +727,13 @@ func NewClusterClient(opt *ClusterOptions) *ClusterClient {
 	return c
 }
 
+// ReloadState reloads cluster state. It calls ClusterSlots func
+// to get cluster slots information.
+func (c *ClusterClient) ReloadState() error {
+	_, err := c.state.Reload()
+	return err
+}
+
 func (c *ClusterClient) init() {
 	c.cmdable.setProcessor(c.Process)
 }
@@ -818,6 +892,7 @@ func (c *ClusterClient) Watch(fn func(*Tx) error, keys ...string) error {
 		}
 
 		if internal.IsRetryableError(err, true) {
+			c.state.LazyReload()
 			continue
 		}
 
@@ -853,6 +928,13 @@ func (c *ClusterClient) Close() error {
 	return c.nodes.Close()
 }
 
+// Do creates a Cmd from the args and processes the cmd.
+func (c *ClusterClient) Do(args ...interface{}) *Cmd {
+	cmd := NewCmd(args...)
+	c.Process(cmd)
+	return cmd
+}
+
 func (c *ClusterClient) WrapProcess(
 	fn func(oldProcess func(Cmder) error) func(Cmder) error,
 ) {
@@ -904,12 +986,14 @@ func (c *ClusterClient) defaultProcess(cmd Cmder) error {
 		}
 
 		if internal.IsRetryableError(err, true) {
-			// Firstly retry the same node.
+			c.state.LazyReload()
+
+			// First retry the same node.
 			if attempt == 0 {
 				continue
 			}
 
-			// Secondly try random node.
+			// Second try random node.
 			node, err = c.nodes.Random()
 			if err != nil {
 				break
@@ -944,12 +1028,9 @@ func (c *ClusterClient) defaultProcess(cmd Cmder) error {
 // ForEachMaster concurrently calls the fn on each master node in the cluster.
 // It returns the first error if any.
 func (c *ClusterClient) ForEachMaster(fn func(client *Client) error) error {
-	state, err := c.state.Reload()
+	state, err := c.state.ReloadOrGet()
 	if err != nil {
-		state, err = c.state.Get()
+		return err
-		if err != nil {
-			return err
-		}
 	}
 
 	var wg sync.WaitGroup
@@ -980,12 +1061,9 @@ func (c *ClusterClient) ForEachMaster(fn func(client *Client) error) error {
 // ForEachSlave concurrently calls the fn on each slave node in the cluster.
 // It returns the first error if any.
 func (c *ClusterClient) ForEachSlave(fn func(client *Client) error) error {
-	state, err := c.state.Reload()
+	state, err := c.state.ReloadOrGet()
 	if err != nil {
-		state, err = c.state.Get()
+		return err
-		if err != nil {
-			return err
-		}
 	}
 
 	var wg sync.WaitGroup
@@ -1016,12 +1094,9 @@ func (c *ClusterClient) ForEachSlave(fn func(client *Client) error) error {
 // ForEachNode concurrently calls the fn on each known node in the cluster.
 // It returns the first error if any.
 func (c *ClusterClient) ForEachNode(fn func(client *Client) error) error {
-	state, err := c.state.Reload()
+	state, err := c.state.ReloadOrGet()
 	if err != nil {
-		state, err = c.state.Get()
+		return err
-		if err != nil {
-			return err
-		}
 	}
 
 	var wg sync.WaitGroup
@@ -1071,7 +1146,7 @@ func (c *ClusterClient) PoolStats() *PoolStats {
 		acc.Timeouts += s.Timeouts
 
 		acc.TotalConns += s.TotalConns
-		acc.FreeConns += s.FreeConns
+		acc.IdleConns += s.IdleConns
 		acc.StaleConns += s.StaleConns
 	}
 
@@ -1082,7 +1157,7 @@ func (c *ClusterClient) PoolStats() *PoolStats {
 		acc.Timeouts += s.Timeouts
 
 		acc.TotalConns += s.TotalConns
-		acc.FreeConns += s.FreeConns
+		acc.IdleConns += s.IdleConns
 		acc.StaleConns += s.StaleConns
 	}
 
@@ -1090,6 +1165,14 @@ func (c *ClusterClient) PoolStats() *PoolStats {
 }
 
 func (c *ClusterClient) loadState() (*clusterState, error) {
+	if c.opt.ClusterSlots != nil {
+		slots, err := c.opt.ClusterSlots()
+		if err != nil {
+			return nil, err
+		}
+		return newClusterState(c.nodes, slots, "")
+	}
+
 	addrs, err := c.nodes.Addrs()
 	if err != nil {
 		return nil, err
@@ -1196,7 +1279,7 @@ func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error {
 		cmdsMap = failedCmds
 	}
 
-	return firstCmdsErr(cmds)
+	return cmdsFirstErr(cmds)
 }
 
 func (c *ClusterClient) mapCmdsByNode(cmds []Cmder) (map[*clusterNode][]Cmder, error) {
@@ -1207,9 +1290,16 @@ func (c *ClusterClient) mapCmdsByNode(cmds []Cmder) (map[*clusterNode][]Cmder, e
 	}
 
 	cmdsMap := make(map[*clusterNode][]Cmder)
+	cmdsAreReadOnly := c.cmdsAreReadOnly(cmds)
 	for _, cmd := range cmds {
-		slot := c.cmdSlot(cmd)
+		var node *clusterNode
-		node, err := state.slotMasterNode(slot)
+		var err error
+		if cmdsAreReadOnly {
+			_, node, err = c.cmdSlotAndNode(cmd)
+		} else {
+			slot := c.cmdSlot(cmd)
+			node, err = state.slotMasterNode(slot)
+		}
 		if err != nil {
 			return nil, err
 		}
@@ -1218,6 +1308,16 @@ func (c *ClusterClient) mapCmdsByNode(cmds []Cmder) (map[*clusterNode][]Cmder, e
 	return cmdsMap, nil
 }
 
+func (c *ClusterClient) cmdsAreReadOnly(cmds []Cmder) bool {
+	for _, cmd := range cmds {
+		cmdInfo := c.cmdInfo(cmd.Name())
+		if cmdInfo == nil || !cmdInfo.ReadOnly {
+			return false
+		}
+	}
+	return true
+}
+
 func (c *ClusterClient) remapCmds(cmds []Cmder, failedCmds map[*clusterNode][]Cmder) {
 	remappedCmds, err := c.mapCmdsByNode(cmds)
 	if err != nil {
@@ -1233,26 +1333,26 @@ func (c *ClusterClient) remapCmds(cmds []Cmder, failedCmds map[*clusterNode][]Cm
 func (c *ClusterClient) pipelineProcessCmds(
 	node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds map[*clusterNode][]Cmder,
 ) error {
-	_ = cn.SetWriteTimeout(c.opt.WriteTimeout)
+	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-
+		return writeCmd(wr, cmds...)
-	err := writeCmd(cn, cmds...)
+	})
 	if err != nil {
 		setCmdsErr(cmds, err)
 		failedCmds[node] = cmds
 		return err
 	}
 
-	// Set read timeout for all commands.
+	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-	_ = cn.SetReadTimeout(c.opt.ReadTimeout)
+		return c.pipelineReadCmds(rd, cmds, failedCmds)
-
+	})
-	return c.pipelineReadCmds(cn, cmds, failedCmds)
+	return err
 }
 
 func (c *ClusterClient) pipelineReadCmds(
-	cn *pool.Conn, cmds []Cmder, failedCmds map[*clusterNode][]Cmder,
+	rd *proto.Reader, cmds []Cmder, failedCmds map[*clusterNode][]Cmder,
 ) error {
 	for _, cmd := range cmds {
-		err := cmd.readReply(cn)
+		err := cmd.readReply(rd)
 		if err == nil {
 			continue
 		}
@@ -1361,7 +1461,7 @@ func (c *ClusterClient) defaultProcessTxPipeline(cmds []Cmder) error {
 		}
 	}
 
-	return firstCmdsErr(cmds)
+	return cmdsFirstErr(cmds)
 }
 
 func (c *ClusterClient) mapCmdsBySlot(cmds []Cmder) map[int][]Cmder {
@@ -1376,35 +1476,37 @@ func (c *ClusterClient) mapCmdsBySlot(cmds []Cmder) map[int][]Cmder {
 func (c *ClusterClient) txPipelineProcessCmds(
 	node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds map[*clusterNode][]Cmder,
 ) error {
-	cn.SetWriteTimeout(c.opt.WriteTimeout)
+	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-	if err := txPipelineWriteMulti(cn, cmds); err != nil {
+		return txPipelineWriteMulti(wr, cmds)
+	})
+	if err != nil {
 		setCmdsErr(cmds, err)
 		failedCmds[node] = cmds
 		return err
 	}
 
-	// Set read timeout for all commands.
+	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-	cn.SetReadTimeout(c.opt.ReadTimeout)
+		err := c.txPipelineReadQueued(rd, cmds, failedCmds)
-
+		if err != nil {
-	if err := c.txPipelineReadQueued(cn, cmds, failedCmds); err != nil {
+			setCmdsErr(cmds, err)
-		setCmdsErr(cmds, err)
+			return err
-		return err
+		}
-	}
+		return pipelineReadCmds(rd, cmds)
-
+	})
-	return pipelineReadCmds(cn, cmds)
+	return err
 }
 
 func (c *ClusterClient) txPipelineReadQueued(
-	cn *pool.Conn, cmds []Cmder, failedCmds map[*clusterNode][]Cmder,
+	rd *proto.Reader, cmds []Cmder, failedCmds map[*clusterNode][]Cmder,
 ) error {
 	// Parse queued replies.
 	var statusCmd StatusCmd
-	if err := statusCmd.readReply(cn); err != nil {
+	if err := statusCmd.readReply(rd); err != nil {
 		return err
 	}
 
 	for _, cmd := range cmds {
-		err := statusCmd.readReply(cn)
+		err := statusCmd.readReply(rd)
 		if err == nil {
 			continue
 		}
@@ -1417,7 +1519,7 @@ func (c *ClusterClient) txPipelineReadQueued(
 	}
 
 	// Parse number of replies.
-	line, err := cn.Rd.ReadLine()
+	line, err := rd.ReadLine()
 	if err != nil {
 		if err == Nil {
 			err = TxFailedErr
@@ -1445,11 +1547,9 @@ func (c *ClusterClient) txPipelineReadQueued(
 }
 
 func (c *ClusterClient) pubSub(channels []string) *PubSub {
-	opt := c.opt.clientOptions()
-
 	var node *clusterNode
-	return &PubSub{
+	pubsub := &PubSub{
-		opt: opt,
+		opt: c.opt.clientOptions(),
 
 		newConn: func(channels []string) (*pool.Conn, error) {
 			if node == nil {
@@ -1472,6 +1572,8 @@ func (c *ClusterClient) pubSub(channels []string) *PubSub {
 			return node.Client.connPool.CloseConn(cn)
 		},
 	}
+	pubsub.init()
+	return pubsub
 }
 
 // Subscribe subscribes the client to the specified channels.
@@ -1494,43 +1596,6 @@ func (c *ClusterClient) PSubscribe(channels ...string) *PubSub {
 	return pubsub
 }
 
-func useOriginAddr(originAddr, nodeAddr string) bool {
-	nodeHost, nodePort, err := net.SplitHostPort(nodeAddr)
-	if err != nil {
-		return false
-	}
-
-	nodeIP := net.ParseIP(nodeHost)
-	if nodeIP == nil {
-		return false
-	}
-
-	if !nodeIP.IsLoopback() {
-		return false
-	}
-
-	_, originPort, err := net.SplitHostPort(originAddr)
-	if err != nil {
-		return false
-	}
-
-	return nodePort == originPort
-}
-
-func isLoopbackAddr(addr string) bool {
-	host, _, err := net.SplitHostPort(addr)
-	if err != nil {
-		return false
-	}
-
-	ip := net.ParseIP(host)
-	if ip == nil {
-		return false
-	}
-
-	return ip.IsLoopback()
-}
-
 func appendUniqueNode(nodes []*clusterNode, node *clusterNode) []*clusterNode {
 	for _, n := range nodes {
 		if n == node {

vendor/github.com/go-redis/redis/commands.go

@@ -62,6 +62,7 @@ type Cmdable interface {
 	TxPipelined(fn func(Pipeliner) error) ([]Cmder, error)
 	TxPipeline() Pipeliner
 
+	Command() *CommandsInfoCmd
 	ClientGetName() *StringCmd
 	Echo(message interface{}) *StringCmd
 	Ping() *StatusCmd
@@ -171,6 +172,26 @@ type Cmdable interface {
 	SRem(key string, members ...interface{}) *IntCmd
 	SUnion(keys ...string) *StringSliceCmd
 	SUnionStore(destination string, keys ...string) *IntCmd
+	XAdd(a *XAddArgs) *StringCmd
+	XLen(stream string) *IntCmd
+	XRange(stream, start, stop string) *XMessageSliceCmd
+	XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd
+	XRevRange(stream string, start, stop string) *XMessageSliceCmd
+	XRevRangeN(stream string, start, stop string, count int64) *XMessageSliceCmd
+	XRead(a *XReadArgs) *XStreamSliceCmd
+	XReadStreams(streams ...string) *XStreamSliceCmd
+	XGroupCreate(stream, group, start string) *StatusCmd
+	XGroupSetID(stream, group, start string) *StatusCmd
+	XGroupDestroy(stream, group string) *IntCmd
+	XGroupDelConsumer(stream, group, consumer string) *IntCmd
+	XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd
+	XAck(stream, group string, ids ...string) *IntCmd
+	XPending(stream, group string) *XPendingCmd
+	XPendingExt(a *XPendingExtArgs) *XPendingExtCmd
+	XClaim(a *XClaimArgs) *XMessageSliceCmd
+	XClaimJustID(a *XClaimArgs) *StringSliceCmd
+	XTrim(key string, maxLen int64) *IntCmd
+	XTrimApprox(key string, maxLen int64) *IntCmd
 	ZAdd(key string, members ...Z) *IntCmd
 	ZAddNX(key string, members ...Z) *IntCmd
 	ZAddXX(key string, members ...Z) *IntCmd
@@ -209,6 +230,7 @@ type Cmdable interface {
 	BgRewriteAOF() *StatusCmd
 	BgSave() *StatusCmd
 	ClientKill(ipPort string) *StatusCmd
+	ClientKillByFilter(keys ...string) *IntCmd
 	ClientList() *StringCmd
 	ClientPause(dur time.Duration) *BoolCmd
 	ConfigGet(parameter string) *SliceCmd
@@ -265,9 +287,9 @@ type Cmdable interface {
 	GeoRadiusByMemberRO(key, member string, query *GeoRadiusQuery) *GeoLocationCmd
 	GeoDist(key string, member1, member2, unit string) *FloatCmd
 	GeoHash(key string, members ...string) *StringSliceCmd
-	Command() *CommandsInfoCmd
 	ReadOnly() *StatusCmd
 	ReadWrite() *StatusCmd
+	MemoryUsage(key string, samples ...int) *IntCmd
 }
 
 type StatefulCmdable interface {
@@ -345,6 +367,12 @@ func (c *statefulCmdable) SwapDB(index1, index2 int) *StatusCmd {
 
 //------------------------------------------------------------------------------
 
+func (c *cmdable) Command() *CommandsInfoCmd {
+	cmd := NewCommandsInfoCmd("command")
+	c.process(cmd)
+	return cmd
+}
+
 func (c *cmdable) Del(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "del"
@@ -411,7 +439,7 @@ func (c *cmdable) Migrate(host, port, key string, db int64, timeout time.Duratio
 		db,
 		formatMs(timeout),
 	)
-	cmd.setReadTimeout(readTimeout(timeout))
+	cmd.setReadTimeout(timeout)
 	c.process(cmd)
 	return cmd
 }
@@ -985,7 +1013,7 @@ func (c *cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	}
 	args[len(args)-1] = formatSec(timeout)
 	cmd := NewStringSliceCmd(args...)
-	cmd.setReadTimeout(readTimeout(timeout))
+	cmd.setReadTimeout(timeout)
 	c.process(cmd)
 	return cmd
 }
@@ -998,7 +1026,7 @@ func (c *cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	}
 	args[len(keys)+1] = formatSec(timeout)
 	cmd := NewStringSliceCmd(args...)
-	cmd.setReadTimeout(readTimeout(timeout))
+	cmd.setReadTimeout(timeout)
 	c.process(cmd)
 	return cmd
 }
@@ -1010,7 +1038,7 @@ func (c *cmdable) BRPopLPush(source, destination string, timeout time.Duration)
 		destination,
 		formatSec(timeout),
 	)
-	cmd.setReadTimeout(readTimeout(timeout))
+	cmd.setReadTimeout(timeout)
 	c.process(cmd)
 	return cmd
 }
@@ -1282,6 +1310,239 @@ func (c *cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
 
 //------------------------------------------------------------------------------
 
+type XAddArgs struct {
+	Stream       string
+	MaxLen       int64 // MAXLEN N
+	MaxLenApprox int64 // MAXLEN ~ N
+	ID           string
+	Values       map[string]interface{}
+}
+
+func (c *cmdable) XAdd(a *XAddArgs) *StringCmd {
+	args := make([]interface{}, 0, 6+len(a.Values)*2)
+	args = append(args, "xadd")
+	args = append(args, a.Stream)
+	if a.MaxLen > 0 {
+		args = append(args, "maxlen", a.MaxLen)
+	} else if a.MaxLenApprox > 0 {
+		args = append(args, "maxlen", "~", a.MaxLenApprox)
+	}
+	if a.ID != "" {
+		args = append(args, a.ID)
+	} else {
+		args = append(args, "*")
+	}
+	for k, v := range a.Values {
+		args = append(args, k)
+		args = append(args, v)
+	}
+
+	cmd := NewStringCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XLen(stream string) *IntCmd {
+	cmd := NewIntCmd("xlen", stream)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XRange(stream, start, stop string) *XMessageSliceCmd {
+	cmd := NewXMessageSliceCmd("xrange", stream, start, stop)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd {
+	cmd := NewXMessageSliceCmd("xrange", stream, start, stop, "count", count)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XRevRange(stream, start, stop string) *XMessageSliceCmd {
+	cmd := NewXMessageSliceCmd("xrevrange", stream, start, stop)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XRevRangeN(stream, start, stop string, count int64) *XMessageSliceCmd {
+	cmd := NewXMessageSliceCmd("xrevrange", stream, start, stop, "count", count)
+	c.process(cmd)
+	return cmd
+}
+
+type XReadArgs struct {
+	Streams []string
+	Count   int64
+	Block   time.Duration
+}
+
+func (c *cmdable) XRead(a *XReadArgs) *XStreamSliceCmd {
+	args := make([]interface{}, 0, 5+len(a.Streams))
+	args = append(args, "xread")
+	if a.Count > 0 {
+		args = append(args, "count")
+		args = append(args, a.Count)
+	}
+	if a.Block >= 0 {
+		args = append(args, "block")
+		args = append(args, int64(a.Block/time.Millisecond))
+	}
+	args = append(args, "streams")
+	for _, s := range a.Streams {
+		args = append(args, s)
+	}
+
+	cmd := NewXStreamSliceCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XReadStreams(streams ...string) *XStreamSliceCmd {
+	return c.XRead(&XReadArgs{
+		Streams: streams,
+		Block:   -1,
+	})
+}
+
+func (c *cmdable) XGroupCreate(stream, group, start string) *StatusCmd {
+	cmd := NewStatusCmd("xgroup", "create", stream, group, start)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XGroupSetID(stream, group, start string) *StatusCmd {
+	cmd := NewStatusCmd("xgroup", "setid", stream, group, start)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XGroupDestroy(stream, group string) *IntCmd {
+	cmd := NewIntCmd("xgroup", "destroy", stream, group)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XGroupDelConsumer(stream, group, consumer string) *IntCmd {
+	cmd := NewIntCmd("xgroup", "delconsumer", stream, group, consumer)
+	c.process(cmd)
+	return cmd
+}
+
+type XReadGroupArgs struct {
+	Group    string
+	Consumer string
+	Streams  []string
+	Count    int64
+	Block    time.Duration
+}
+
+func (c *cmdable) XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd {
+	args := make([]interface{}, 0, 8+len(a.Streams))
+	args = append(args, "xreadgroup", "group", a.Group, a.Consumer)
+	if a.Count > 0 {
+		args = append(args, "count", a.Count)
+	}
+	if a.Block >= 0 {
+		args = append(args, "block", int64(a.Block/time.Millisecond))
+	}
+	args = append(args, "streams")
+	for _, s := range a.Streams {
+		args = append(args, s)
+	}
+
+	cmd := NewXStreamSliceCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XAck(stream, group string, ids ...string) *IntCmd {
+	args := []interface{}{"xack", stream, group}
+	for _, id := range ids {
+		args = append(args, id)
+	}
+	cmd := NewIntCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XPending(stream, group string) *XPendingCmd {
+	cmd := NewXPendingCmd("xpending", stream, group)
+	c.process(cmd)
+	return cmd
+}
+
+type XPendingExtArgs struct {
+	Stream   string
+	Group    string
+	Start    string
+	End      string
+	Count    int64
+	Consumer string
+}
+
+func (c *cmdable) XPendingExt(a *XPendingExtArgs) *XPendingExtCmd {
+	args := make([]interface{}, 0, 7)
+	args = append(args, "xpending", a.Stream, a.Group, a.Start, a.End, a.Count)
+	if a.Consumer != "" {
+		args = append(args, a.Consumer)
+	}
+	cmd := NewXPendingExtCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+type XClaimArgs struct {
+	Stream   string
+	Group    string
+	Consumer string
+	MinIdle  time.Duration
+	Messages []string
+}
+
+func (c *cmdable) XClaim(a *XClaimArgs) *XMessageSliceCmd {
+	args := xClaimArgs(a)
+	cmd := NewXMessageSliceCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XClaimJustID(a *XClaimArgs) *StringSliceCmd {
+	args := xClaimArgs(a)
+	args = append(args, "justid")
+	cmd := NewStringSliceCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
+func xClaimArgs(a *XClaimArgs) []interface{} {
+	args := make([]interface{}, 0, 4+len(a.Messages))
+	args = append(args,
+		"xclaim",
+		a.Stream,
+		a.Group, a.Consumer,
+		int64(a.MinIdle/time.Millisecond))
+	for _, id := range a.Messages {
+		args = append(args, id)
+	}
+	return args
+}
+
+func (c *cmdable) XTrim(key string, maxLen int64) *IntCmd {
+	cmd := NewIntCmd("xtrim", key, "maxlen", maxLen)
+	c.process(cmd)
+	return cmd
+}
+
+func (c *cmdable) XTrimApprox(key string, maxLen int64) *IntCmd {
+	cmd := NewIntCmd("xtrim", key, "maxlen", "~", maxLen)
+	c.process(cmd)
+	return cmd
+}
+
+//------------------------------------------------------------------------------
+
 // Z represents sorted set member.
 type Z struct {
 	Score  float64
@@ -1682,6 +1943,20 @@ func (c *cmdable) ClientKill(ipPort string) *StatusCmd {
 	return cmd
 }
 
+// ClientKillByFilter is new style synx, while the ClientKill is old
+// CLIENT KILL <option> [value] ... <option> [value]
+func (c *cmdable) ClientKillByFilter(keys ...string) *IntCmd {
+	args := make([]interface{}, 2+len(keys))
+	args[0] = "client"
+	args[1] = "kill"
+	for i, key := range keys {
+		args[2+i] = key
+	}
+	cmd := NewIntCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
 func (c *cmdable) ClientList() *StringCmd {
 	cmd := NewStringCmd("client", "list")
 	c.process(cmd)
@@ -2168,8 +2443,15 @@ func (c *cmdable) GeoPos(key string, members ...string) *GeoPosCmd {
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) Command() *CommandsInfoCmd {
+func (c *cmdable) MemoryUsage(key string, samples ...int) *IntCmd {
-	cmd := NewCommandsInfoCmd("command")
+	args := []interface{}{"memory", "usage", key}
+	if len(samples) > 0 {
+		if len(samples) != 1 {
+			panic("MemoryUsage expects single sample count")
+		}
+		args = append(args, "SAMPLES", samples[0])
+	}
+	cmd := NewIntCmd(args...)
 	c.process(cmd)
 	return cmd
 }

vendor/github.com/go-redis/redis/internal/error.go

@@ -8,9 +8,15 @@ import (
 	"github.com/go-redis/redis/internal/proto"
 )
 
-func IsRetryableError(err error, retryNetError bool) bool {
+func IsRetryableError(err error, retryTimeout bool) bool {
-	if IsNetworkError(err) {
+	if err == io.EOF {
-		return retryNetError
+		return true
+	}
+	if netErr, ok := err.(net.Error); ok {
+		if netErr.Timeout() {
+			return retryTimeout
+		}
+		return true
 	}
 	s := err.Error()
 	if s == "ERR max number of clients reached" {
@@ -19,6 +25,9 @@ func IsRetryableError(err error, retryNetError bool) bool {
 	if strings.HasPrefix(s, "LOADING ") {
 		return true
 	}
+	if strings.HasPrefix(s, "READONLY ") {
+		return true
+	}
 	if strings.HasPrefix(s, "CLUSTERDOWN ") {
 		return true
 	}
@@ -30,24 +39,12 @@ func IsRedisError(err error) bool {
 	return ok
 }
 
-func IsNetworkError(err error) bool {
-	if err == io.EOF {
-		return true
-	}
-	_, ok := err.(net.Error)
-	return ok
-}
-
-func IsReadOnlyError(err error) bool {
-	return strings.HasPrefix(err.Error(), "READONLY ")
-}
-
 func IsBadConn(err error, allowTimeout bool) bool {
 	if err == nil {
 		return false
 	}
 	if IsRedisError(err) {
-		return false
+		return strings.HasPrefix(err.Error(), "READONLY ")
 	}
 	if allowTimeout {
 		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {

vendor/github.com/go-redis/redis/internal/hashtag/hashtag.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 )
 
-const SlotNumber = 16384
+const slotNumber = 16384
 
 // CRC16 implementation according to CCITT standards.
 // Copyright 2001-2010 Georges Menie (www.menie.org)
@@ -56,7 +56,7 @@ func Key(key string) string {
 }
 
 func RandomSlot() int {
-	return rand.Intn(SlotNumber)
+	return rand.Intn(slotNumber)
 }
 
 // hashSlot returns a consistent slot number between 0 and 16383
@@ -66,7 +66,7 @@ func Slot(key string) int {
 		return RandomSlot()
 	}
 	key = Key(key)
-	return int(crc16sum(key)) % SlotNumber
+	return int(crc16sum(key)) % slotNumber
 }
 
 func crc16sum(key string) (crc uint16) {

vendor/github.com/go-redis/redis/internal/pool/conn.go

@@ -13,19 +13,21 @@ var noDeadline = time.Time{}
 type Conn struct {
 	netConn net.Conn
 
-	Rd *proto.Reader
+	rd       *proto.Reader
-	Wb *proto.WriteBuffer
+	rdLocked bool
+	wr       *proto.Writer
 
-	Inited bool
+	InitedAt time.Time
-	usedAt atomic.Value
+	pooled   bool
+	usedAt   atomic.Value
 }
 
 func NewConn(netConn net.Conn) *Conn {
 	cn := &Conn{
 		netConn: netConn,
-		Wb:      proto.NewWriteBuffer(),
 	}
-	cn.Rd = proto.NewReader(cn.netConn)
+	cn.rd = proto.NewReader(netConn)
+	cn.wr = proto.NewWriter(netConn)
 	cn.SetUsedAt(time.Now())
 	return cn
 }
@@ -40,14 +42,11 @@ func (cn *Conn) SetUsedAt(tm time.Time) {
 
 func (cn *Conn) SetNetConn(netConn net.Conn) {
 	cn.netConn = netConn
-	cn.Rd.Reset(netConn)
+	cn.rd.Reset(netConn)
+	cn.wr.Reset(netConn)
 }
 
-func (cn *Conn) IsStale(timeout time.Duration) bool {
+func (cn *Conn) setReadTimeout(timeout time.Duration) error {
-	return timeout > 0 && time.Since(cn.UsedAt()) > timeout
-}
-
-func (cn *Conn) SetReadTimeout(timeout time.Duration) error {
 	now := time.Now()
 	cn.SetUsedAt(now)
 	if timeout > 0 {
@@ -56,7 +55,7 @@ func (cn *Conn) SetReadTimeout(timeout time.Duration) error {
 	return cn.netConn.SetReadDeadline(noDeadline)
 }
 
-func (cn *Conn) SetWriteTimeout(timeout time.Duration) error {
+func (cn *Conn) setWriteTimeout(timeout time.Duration) error {
 	now := time.Now()
 	cn.SetUsedAt(now)
 	if timeout > 0 {
@@ -73,6 +72,22 @@ func (cn *Conn) RemoteAddr() net.Addr {
 	return cn.netConn.RemoteAddr()
 }
 
+func (cn *Conn) WithReader(timeout time.Duration, fn func(rd *proto.Reader) error) error {
+	_ = cn.setReadTimeout(timeout)
+	return fn(cn.rd)
+}
+
+func (cn *Conn) WithWriter(timeout time.Duration, fn func(wr *proto.Writer) error) error {
+	_ = cn.setWriteTimeout(timeout)
+
+	firstErr := fn(cn.wr)
+	err := cn.wr.Flush()
+	if err != nil && firstErr == nil {
+		firstErr = err
+	}
+	return firstErr
+}
+
 func (cn *Conn) Close() error {
 	return cn.netConn.Close()
 }

vendor/github.com/go-redis/redis/internal/pool/pool.go

@@ -28,7 +28,6 @@ type Stats struct {
 	Timeouts uint32 // number of times a wait timeout occurred
 
 	TotalConns uint32 // number of total connections in the pool
-	FreeConns  uint32 // deprecated - use IdleConns
 	IdleConns  uint32 // number of idle connections in the pool
 	StaleConns uint32 // number of stale connections removed from the pool
 }
@@ -53,6 +52,8 @@ type Options struct {
 	OnClose func(*Conn) error
 
 	PoolSize           int
+	MinIdleConns       int
+	MaxConnAge         time.Duration
 	PoolTimeout        time.Duration
 	IdleTimeout        time.Duration
 	IdleCheckFrequency time.Duration
@@ -63,16 +64,16 @@ type ConnPool struct {
 
 	dialErrorsNum uint32 // atomic
 
-	lastDialError   error
 	lastDialErrorMu sync.RWMutex
+	lastDialError   error
 
 	queue chan struct{}
 
-	connsMu sync.Mutex
+	connsMu      sync.Mutex
-	conns   []*Conn
+	conns        []*Conn
-
+	idleConns    []*Conn
-	idleConnsMu sync.RWMutex
+	poolSize     int
-	idleConns   []*Conn
+	idleConnsLen int
 
 	stats Stats
 
@@ -90,6 +91,10 @@ func NewConnPool(opt *Options) *ConnPool {
 		idleConns: make([]*Conn, 0, opt.PoolSize),
 	}
 
+	for i := 0; i < opt.MinIdleConns; i++ {
+		p.checkMinIdleConns()
+	}
+
 	if opt.IdleTimeout > 0 && opt.IdleCheckFrequency > 0 {
 		go p.reaper(opt.IdleCheckFrequency)
 	}
@@ -97,19 +102,53 @@ func NewConnPool(opt *Options) *ConnPool {
 	return p
 }
 
+func (p *ConnPool) checkMinIdleConns() {
+	if p.opt.MinIdleConns == 0 {
+		return
+	}
+	if p.poolSize < p.opt.PoolSize && p.idleConnsLen < p.opt.MinIdleConns {
+		p.poolSize++
+		p.idleConnsLen++
+		go p.addIdleConn()
+	}
+}
+
+func (p *ConnPool) addIdleConn() {
+	cn, err := p.newConn(true)
+	if err != nil {
+		return
+	}
+
+	p.connsMu.Lock()
+	p.conns = append(p.conns, cn)
+	p.idleConns = append(p.idleConns, cn)
+	p.connsMu.Unlock()
+}
+
 func (p *ConnPool) NewConn() (*Conn, error) {
-	cn, err := p.newConn()
+	return p._NewConn(false)
+}
+
+func (p *ConnPool) _NewConn(pooled bool) (*Conn, error) {
+	cn, err := p.newConn(pooled)
 	if err != nil {
 		return nil, err
 	}
 
 	p.connsMu.Lock()
 	p.conns = append(p.conns, cn)
+	if pooled {
+		if p.poolSize < p.opt.PoolSize {
+			p.poolSize++
+		} else {
+			cn.pooled = false
+		}
+	}
 	p.connsMu.Unlock()
 	return cn, nil
 }
 
-func (p *ConnPool) newConn() (*Conn, error) {
+func (p *ConnPool) newConn(pooled bool) (*Conn, error) {
 	if p.closed() {
 		return nil, ErrClosed
 	}
@@ -127,7 +166,9 @@ func (p *ConnPool) newConn() (*Conn, error) {
 		return nil, err
 	}
 
-	return NewConn(netConn), nil
+	cn := NewConn(netConn)
+	cn.pooled = pooled
+	return cn, nil
 }
 
 func (p *ConnPool) tryDial() {
@@ -174,16 +215,16 @@ func (p *ConnPool) Get() (*Conn, error) {
 	}
 
 	for {
-		p.idleConnsMu.Lock()
+		p.connsMu.Lock()
 		cn := p.popIdle()
-		p.idleConnsMu.Unlock()
+		p.connsMu.Unlock()
 
 		if cn == nil {
 			break
 		}
 
-		if cn.IsStale(p.opt.IdleTimeout) {
+		if p.isStaleConn(cn) {
-			p.CloseConn(cn)
+			_ = p.CloseConn(cn)
 			continue
 		}
 
@@ -193,7 +234,7 @@ func (p *ConnPool) Get() (*Conn, error) {
 
 	atomic.AddUint32(&p.stats.Misses, 1)
 
-	newcn, err := p.NewConn()
+	newcn, err := p._NewConn(true)
 	if err != nil {
 		p.freeTurn()
 		return nil, err
@@ -241,21 +282,21 @@ func (p *ConnPool) popIdle() *Conn {
 	idx := len(p.idleConns) - 1
 	cn := p.idleConns[idx]
 	p.idleConns = p.idleConns[:idx]
-
+	p.idleConnsLen--
+	p.checkMinIdleConns()
 	return cn
 }
 
 func (p *ConnPool) Put(cn *Conn) {
-	buf := cn.Rd.PeekBuffered()
+	if !cn.pooled {
-	if buf != nil {
-		internal.Logf("connection has unread data: %.100q", buf)
 		p.Remove(cn)
 		return
 	}
 
-	p.idleConnsMu.Lock()
+	p.connsMu.Lock()
 	p.idleConns = append(p.idleConns, cn)
-	p.idleConnsMu.Unlock()
+	p.idleConnsLen++
+	p.connsMu.Unlock()
 	p.freeTurn()
 }
 
@@ -275,6 +316,10 @@ func (p *ConnPool) removeConn(cn *Conn) {
 	for i, c := range p.conns {
 		if c == cn {
 			p.conns = append(p.conns[:i], p.conns[i+1:]...)
+			if cn.pooled {
+				p.poolSize--
+				p.checkMinIdleConns()
+			}
 			break
 		}
 	}
@@ -291,17 +336,17 @@ func (p *ConnPool) closeConn(cn *Conn) error {
 // Len returns total number of connections.
 func (p *ConnPool) Len() int {
 	p.connsMu.Lock()
-	l := len(p.conns)
+	n := len(p.conns)
 	p.connsMu.Unlock()
-	return l
+	return n
 }
 
-// FreeLen returns number of idle connections.
+// IdleLen returns number of idle connections.
 func (p *ConnPool) IdleLen() int {
-	p.idleConnsMu.RLock()
+	p.connsMu.Lock()
-	l := len(p.idleConns)
+	n := p.idleConnsLen
-	p.idleConnsMu.RUnlock()
+	p.connsMu.Unlock()
-	return l
+	return n
 }
 
 func (p *ConnPool) Stats() *Stats {
@@ -312,7 +357,6 @@ func (p *ConnPool) Stats() *Stats {
 		Timeouts: atomic.LoadUint32(&p.stats.Timeouts),
 
 		TotalConns: uint32(p.Len()),
-		FreeConns:  uint32(idleLen),
 		IdleConns:  uint32(idleLen),
 		StaleConns: atomic.LoadUint32(&p.stats.StaleConns),
 	}
@@ -349,11 +393,10 @@ func (p *ConnPool) Close() error {
 		}
 	}
 	p.conns = nil
-	p.connsMu.Unlock()
+	p.poolSize = 0
-
-	p.idleConnsMu.Lock()
 	p.idleConns = nil
-	p.idleConnsMu.Unlock()
+	p.idleConnsLen = 0
+	p.connsMu.Unlock()
 
 	return firstErr
 }
@@ -364,11 +407,12 @@ func (p *ConnPool) reapStaleConn() *Conn {
 	}
 
 	cn := p.idleConns[0]
-	if !cn.IsStale(p.opt.IdleTimeout) {
+	if !p.isStaleConn(cn) {
 		return nil
 	}
 
 	p.idleConns = append(p.idleConns[:0], p.idleConns[1:]...)
+	p.idleConnsLen--
 
 	return cn
 }
@@ -378,9 +422,9 @@ func (p *ConnPool) ReapStaleConns() (int, error) {
 	for {
 		p.getTurn()
 
-		p.idleConnsMu.Lock()
+		p.connsMu.Lock()
 		cn := p.reapStaleConn()
-		p.idleConnsMu.Unlock()
+		p.connsMu.Unlock()
 
 		if cn != nil {
 			p.removeConn(cn)
@@ -414,3 +458,19 @@ func (p *ConnPool) reaper(frequency time.Duration) {
 		atomic.AddUint32(&p.stats.StaleConns, uint32(n))
 	}
 }
+
+func (p *ConnPool) isStaleConn(cn *Conn) bool {
+	if p.opt.IdleTimeout == 0 && p.opt.MaxConnAge == 0 {
+		return false
+	}
+
+	now := time.Now()
+	if p.opt.IdleTimeout > 0 && now.Sub(cn.UsedAt()) >= p.opt.IdleTimeout {
+		return true
+	}
+	if p.opt.MaxConnAge > 0 && now.Sub(cn.InitedAt) >= p.opt.MaxConnAge {
+		return true
+	}
+
+	return false
+}

vendor/github.com/go-redis/redis/internal/proto/reader.go

@@ -9,8 +9,6 @@ import (
 	"github.com/go-redis/redis/internal/util"
 )
 
-const bytesAllocLimit = 1024 * 1024 // 1mb
-
 const (
 	ErrorReply  = '-'
 	StatusReply = '+'
@@ -32,40 +30,23 @@ func (e RedisError) Error() string { return string(e) }
 type MultiBulkParse func(*Reader, int64) (interface{}, error)
 
 type Reader struct {
-	src *bufio.Reader
+	rd   *bufio.Reader
-	buf []byte
+	_buf []byte
 }
 
 func NewReader(rd io.Reader) *Reader {
 	return &Reader{
-		src: bufio.NewReader(rd),
+		rd:   bufio.NewReader(rd),
-		buf: make([]byte, 4096),
+		_buf: make([]byte, 64),
 	}
 }
 
 func (r *Reader) Reset(rd io.Reader) {
-	r.src.Reset(rd)
+	r.rd.Reset(rd)
-}
-
-func (r *Reader) PeekBuffered() []byte {
-	if n := r.src.Buffered(); n != 0 {
-		b, _ := r.src.Peek(n)
-		return b
-	}
-	return nil
-}
-
-func (r *Reader) ReadN(n int) ([]byte, error) {
-	b, err := readN(r.src, r.buf, n)
-	if err != nil {
-		return nil, err
-	}
-	r.buf = b
-	return b, nil
 }
 
 func (r *Reader) ReadLine() ([]byte, error) {
-	line, isPrefix, err := r.src.ReadLine()
+	line, isPrefix, err := r.rd.ReadLine()
 	if err != nil {
 		return nil, err
 	}
@@ -91,11 +72,11 @@ func (r *Reader) ReadReply(m MultiBulkParse) (interface{}, error) {
 	case ErrorReply:
 		return nil, ParseErrorReply(line)
 	case StatusReply:
-		return parseStatusValue(line), nil
+		return string(line[1:]), nil
 	case IntReply:
 		return util.ParseInt(line[1:], 10, 64)
 	case StringReply:
-		return r.readTmpBytesValue(line)
+		return r.readStringReply(line)
 	case ArrayReply:
 		n, err := parseArrayLen(line)
 		if err != nil {
@@ -121,47 +102,42 @@ func (r *Reader) ReadIntReply() (int64, error) {
 	}
 }
 
-func (r *Reader) ReadTmpBytesReply() ([]byte, error) {
+func (r *Reader) ReadString() (string, error) {
 	line, err := r.ReadLine()
-	if err != nil {
-		return nil, err
-	}
-	switch line[0] {
-	case ErrorReply:
-		return nil, ParseErrorReply(line)
-	case StringReply:
-		return r.readTmpBytesValue(line)
-	case StatusReply:
-		return parseStatusValue(line), nil
-	default:
-		return nil, fmt.Errorf("redis: can't parse string reply: %.100q", line)
-	}
-}
-
-func (r *Reader) ReadBytesReply() ([]byte, error) {
-	b, err := r.ReadTmpBytesReply()
-	if err != nil {
-		return nil, err
-	}
-	cp := make([]byte, len(b))
-	copy(cp, b)
-	return cp, nil
-}
-
-func (r *Reader) ReadStringReply() (string, error) {
-	b, err := r.ReadTmpBytesReply()
 	if err != nil {
 		return "", err
 	}
-	return string(b), nil
+	switch line[0] {
+	case ErrorReply:
+		return "", ParseErrorReply(line)
+	case StringReply:
+		return r.readStringReply(line)
+	case StatusReply:
+		return string(line[1:]), nil
+	case IntReply:
+		return string(line[1:]), nil
+	default:
+		return "", fmt.Errorf("redis: can't parse reply=%.100q reading string", line)
+	}
 }
 
-func (r *Reader) ReadFloatReply() (float64, error) {
+func (r *Reader) readStringReply(line []byte) (string, error) {
-	b, err := r.ReadTmpBytesReply()
+	if isNilReply(line) {
-	if err != nil {
+		return "", Nil
-		return 0, err
 	}
-	return util.ParseFloat(b, 64)
+
+	replyLen, err := strconv.Atoi(string(line[1:]))
+	if err != nil {
+		return "", err
+	}
+
+	b := make([]byte, replyLen+2)
+	_, err = io.ReadFull(r.rd, b)
+	if err != nil {
+		return "", err
+	}
+
+	return util.BytesToString(b[:replyLen]), nil
 }
 
 func (r *Reader) ReadArrayReply(m MultiBulkParse) (interface{}, error) {
@@ -219,7 +195,7 @@ func (r *Reader) ReadScanReply() ([]string, uint64, error) {
 
 	keys := make([]string, n)
 	for i := int64(0); i < n; i++ {
-		key, err := r.ReadStringReply()
+		key, err := r.ReadString()
 		if err != nil {
 			return nil, 0, err
 		}
@@ -229,7 +205,48 @@ func (r *Reader) ReadScanReply() ([]string, uint64, error) {
 	return keys, cursor, err
 }
 
-func (r *Reader) readTmpBytesValue(line []byte) ([]byte, error) {
+func (r *Reader) ReadInt() (int64, error) {
+	b, err := r.readTmpBytesReply()
+	if err != nil {
+		return 0, err
+	}
+	return util.ParseInt(b, 10, 64)
+}
+
+func (r *Reader) ReadUint() (uint64, error) {
+	b, err := r.readTmpBytesReply()
+	if err != nil {
+		return 0, err
+	}
+	return util.ParseUint(b, 10, 64)
+}
+
+func (r *Reader) ReadFloatReply() (float64, error) {
+	b, err := r.readTmpBytesReply()
+	if err != nil {
+		return 0, err
+	}
+	return util.ParseFloat(b, 64)
+}
+
+func (r *Reader) readTmpBytesReply() ([]byte, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return nil, err
+	}
+	switch line[0] {
+	case ErrorReply:
+		return nil, ParseErrorReply(line)
+	case StringReply:
+		return r._readTmpBytesReply(line)
+	case StatusReply:
+		return line[1:], nil
+	default:
+		return nil, fmt.Errorf("redis: can't parse string reply: %.100q", line)
+	}
+}
+
+func (r *Reader) _readTmpBytesReply(line []byte) ([]byte, error) {
 	if isNilReply(line) {
 		return nil, Nil
 	}
@@ -239,71 +256,20 @@ func (r *Reader) readTmpBytesValue(line []byte) ([]byte, error) {
 		return nil, err
 	}
 
-	b, err := r.ReadN(replyLen + 2)
+	buf := r.buf(replyLen + 2)
+	_, err = io.ReadFull(r.rd, buf)
 	if err != nil {
 		return nil, err
 	}
-	return b[:replyLen], nil
+
+	return buf[:replyLen], nil
 }
 
-func (r *Reader) ReadInt() (int64, error) {
+func (r *Reader) buf(n int) []byte {
-	b, err := r.ReadTmpBytesReply()
+	if d := n - cap(r._buf); d > 0 {
-	if err != nil {
+		r._buf = append(r._buf, make([]byte, d)...)
-		return 0, err
 	}
-	return util.ParseInt(b, 10, 64)
+	return r._buf[:n]
-}
-
-func (r *Reader) ReadUint() (uint64, error) {
-	b, err := r.ReadTmpBytesReply()
-	if err != nil {
-		return 0, err
-	}
-	return util.ParseUint(b, 10, 64)
-}
-
-// --------------------------------------------------------------------
-
-func readN(r io.Reader, b []byte, n int) ([]byte, error) {
-	if n == 0 && b == nil {
-		return make([]byte, 0), nil
-	}
-
-	if cap(b) >= n {
-		b = b[:n]
-		_, err := io.ReadFull(r, b)
-		return b, err
-	}
-	b = b[:cap(b)]
-
-	pos := 0
-	for pos < n {
-		diff := n - len(b)
-		if diff > bytesAllocLimit {
-			diff = bytesAllocLimit
-		}
-		b = append(b, make([]byte, diff)...)
-
-		nn, err := io.ReadFull(r, b[pos:])
-		if err != nil {
-			return nil, err
-		}
-		pos += nn
-	}
-
-	return b, nil
-}
-
-func formatInt(n int64) string {
-	return strconv.FormatInt(n, 10)
-}
-
-func formatUint(u uint64) string {
-	return strconv.FormatUint(u, 10)
-}
-
-func formatFloat(f float64) string {
-	return strconv.FormatFloat(f, 'f', -1, 64)
 }
 
 func isNilReply(b []byte) bool {
@@ -316,10 +282,6 @@ func ParseErrorReply(line []byte) error {
 	return RedisError(string(line[1:]))
 }
 
-func parseStatusValue(line []byte) []byte {
-	return line[1:]
-}
-
 func parseArrayLen(line []byte) (int64, error) {
 	if isNilReply(line) {
 		return 0, Nil

vendor/github.com/go-redis/redis/internal/proto/write_buffer.go

@@ -1,101 +0,0 @@
-package proto
-
-import (
-	"encoding"
-	"fmt"
-	"strconv"
-)
-
-type WriteBuffer struct {
-	b []byte
-}
-
-func NewWriteBuffer() *WriteBuffer {
-	return &WriteBuffer{
-		b: make([]byte, 0, 4096),
-	}
-}
-
-func (w *WriteBuffer) Len() int      { return len(w.b) }
-func (w *WriteBuffer) Bytes() []byte { return w.b }
-func (w *WriteBuffer) Reset()        { w.b = w.b[:0] }
-
-func (w *WriteBuffer) Append(args []interface{}) error {
-	w.b = append(w.b, ArrayReply)
-	w.b = strconv.AppendUint(w.b, uint64(len(args)), 10)
-	w.b = append(w.b, '\r', '\n')
-
-	for _, arg := range args {
-		if err := w.append(arg); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (w *WriteBuffer) append(val interface{}) error {
-	switch v := val.(type) {
-	case nil:
-		w.AppendString("")
-	case string:
-		w.AppendString(v)
-	case []byte:
-		w.AppendBytes(v)
-	case int:
-		w.AppendString(formatInt(int64(v)))
-	case int8:
-		w.AppendString(formatInt(int64(v)))
-	case int16:
-		w.AppendString(formatInt(int64(v)))
-	case int32:
-		w.AppendString(formatInt(int64(v)))
-	case int64:
-		w.AppendString(formatInt(v))
-	case uint:
-		w.AppendString(formatUint(uint64(v)))
-	case uint8:
-		w.AppendString(formatUint(uint64(v)))
-	case uint16:
-		w.AppendString(formatUint(uint64(v)))
-	case uint32:
-		w.AppendString(formatUint(uint64(v)))
-	case uint64:
-		w.AppendString(formatUint(v))
-	case float32:
-		w.AppendString(formatFloat(float64(v)))
-	case float64:
-		w.AppendString(formatFloat(v))
-	case bool:
-		if v {
-			w.AppendString("1")
-		} else {
-			w.AppendString("0")
-		}
-	case encoding.BinaryMarshaler:
-		b, err := v.MarshalBinary()
-		if err != nil {
-			return err
-		}
-		w.AppendBytes(b)
-	default:
-		return fmt.Errorf(
-			"redis: can't marshal %T (consider implementing encoding.BinaryMarshaler)", val)
-	}
-	return nil
-}
-
-func (w *WriteBuffer) AppendString(s string) {
-	w.b = append(w.b, StringReply)
-	w.b = strconv.AppendUint(w.b, uint64(len(s)), 10)
-	w.b = append(w.b, '\r', '\n')
-	w.b = append(w.b, s...)
-	w.b = append(w.b, '\r', '\n')
-}
-
-func (w *WriteBuffer) AppendBytes(p []byte) {
-	w.b = append(w.b, StringReply)
-	w.b = strconv.AppendUint(w.b, uint64(len(p)), 10)
-	w.b = append(w.b, '\r', '\n')
-	w.b = append(w.b, p...)
-	w.b = append(w.b, '\r', '\n')
-}

vendor/github.com/go-redis/redis/internal/proto/writer.go

@@ -0,0 +1,159 @@
+package proto
+
+import (
+	"bufio"
+	"encoding"
+	"fmt"
+	"io"
+	"strconv"
+
+	"github.com/go-redis/redis/internal/util"
+)
+
+type Writer struct {
+	wr *bufio.Writer
+
+	lenBuf []byte
+	numBuf []byte
+}
+
+func NewWriter(wr io.Writer) *Writer {
+	return &Writer{
+		wr: bufio.NewWriter(wr),
+
+		lenBuf: make([]byte, 64),
+		numBuf: make([]byte, 64),
+	}
+}
+
+func (w *Writer) WriteArgs(args []interface{}) error {
+	err := w.wr.WriteByte(ArrayReply)
+	if err != nil {
+		return err
+	}
+
+	err = w.writeLen(len(args))
+	if err != nil {
+		return err
+	}
+
+	for _, arg := range args {
+		err := w.writeArg(arg)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (w *Writer) writeLen(n int) error {
+	w.lenBuf = strconv.AppendUint(w.lenBuf[:0], uint64(n), 10)
+	w.lenBuf = append(w.lenBuf, '\r', '\n')
+	_, err := w.wr.Write(w.lenBuf)
+	return err
+}
+
+func (w *Writer) writeArg(v interface{}) error {
+	switch v := v.(type) {
+	case nil:
+		return w.string("")
+	case string:
+		return w.string(v)
+	case []byte:
+		return w.bytes(v)
+	case int:
+		return w.int(int64(v))
+	case int8:
+		return w.int(int64(v))
+	case int16:
+		return w.int(int64(v))
+	case int32:
+		return w.int(int64(v))
+	case int64:
+		return w.int(v)
+	case uint:
+		return w.uint(uint64(v))
+	case uint8:
+		return w.uint(uint64(v))
+	case uint16:
+		return w.uint(uint64(v))
+	case uint32:
+		return w.uint(uint64(v))
+	case uint64:
+		return w.uint(v)
+	case float32:
+		return w.float(float64(v))
+	case float64:
+		return w.float(v)
+	case bool:
+		if v {
+			return w.int(1)
+		} else {
+			return w.int(0)
+		}
+	case encoding.BinaryMarshaler:
+		b, err := v.MarshalBinary()
+		if err != nil {
+			return err
+		}
+		return w.bytes(b)
+	default:
+		return fmt.Errorf(
+			"redis: can't marshal %T (implement encoding.BinaryMarshaler)", v)
+	}
+}
+
+func (w *Writer) bytes(b []byte) error {
+	err := w.wr.WriteByte(StringReply)
+	if err != nil {
+		return err
+	}
+
+	err = w.writeLen(len(b))
+	if err != nil {
+		return err
+	}
+
+	_, err = w.wr.Write(b)
+	if err != nil {
+		return err
+	}
+
+	return w.crlf()
+}
+
+func (w *Writer) string(s string) error {
+	return w.bytes(util.StringToBytes(s))
+}
+
+func (w *Writer) uint(n uint64) error {
+	w.numBuf = strconv.AppendUint(w.numBuf[:0], n, 10)
+	return w.bytes(w.numBuf)
+}
+
+func (w *Writer) int(n int64) error {
+	w.numBuf = strconv.AppendInt(w.numBuf[:0], n, 10)
+	return w.bytes(w.numBuf)
+}
+
+func (w *Writer) float(f float64) error {
+	w.numBuf = strconv.AppendFloat(w.numBuf[:0], f, 'f', -1, 64)
+	return w.bytes(w.numBuf)
+}
+
+func (w *Writer) crlf() error {
+	err := w.wr.WriteByte('\r')
+	if err != nil {
+		return err
+	}
+	return w.wr.WriteByte('\n')
+}
+
+func (w *Writer) Reset(wr io.Writer) {
+	w.wr.Reset(wr)
+}
+
+func (w *Writer) Flush() error {
+	return w.wr.Flush()
+}

vendor/github.com/go-redis/redis/internal/util/safe.go

@@ -5,3 +5,7 @@ package util
 func BytesToString(b []byte) string {
 	return string(b)
 }
+
+func StringToBytes(s string) []byte {
+	return []byte(s)
+}

vendor/github.com/go-redis/redis/internal/util/unsafe.go

@@ -10,3 +10,13 @@ import (
 func BytesToString(b []byte) string {
 	return *(*string)(unsafe.Pointer(&b))
 }
+
+// StringToBytes converts string to byte slice.
+func StringToBytes(s string) []byte {
+	return *(*[]byte)(unsafe.Pointer(
+		&struct {
+			string
+			Cap int
+		}{s, len(s)},
+	))
+}

vendor/github.com/go-redis/redis/options.go

@@ -59,16 +59,24 @@ type Options struct {
 	// Maximum number of socket connections.
 	// Default is 10 connections per every CPU as reported by runtime.NumCPU.
 	PoolSize int
+	// Minimum number of idle connections which is useful when establishing
+	// new connection is slow.
+	MinIdleConns int
+	// Connection age at which client retires (closes) the connection.
+	// Default is to not close aged connections.
+	MaxConnAge time.Duration
 	// Amount of time client waits for connection if all connections
 	// are busy before returning an error.
 	// Default is ReadTimeout + 1 second.
 	PoolTimeout time.Duration
 	// Amount of time after which client closes idle connections.
 	// Should be less than server's timeout.
-	// Default is 5 minutes.
+	// Default is 5 minutes. -1 disables idle timeout check.
 	IdleTimeout time.Duration
-	// Frequency of idle checks.
+	// Frequency of idle checks made by idle connections reaper.
-	// Default is 1 minute. -1 disables idle check.
+	// Default is 1 minute. -1 disables idle connections reaper,
+	// but idle connections are still discarded by the client
+	// if IdleTimeout is set.
 	IdleCheckFrequency time.Duration
 
 	// Enables read only queries on slave nodes.
@@ -84,12 +92,15 @@ func (opt *Options) init() {
 	}
 	if opt.Dialer == nil {
 		opt.Dialer = func() (net.Conn, error) {
-			conn, err := net.DialTimeout(opt.Network, opt.Addr, opt.DialTimeout)
+			netDialer := &net.Dialer{
-			if opt.TLSConfig == nil || err != nil {
+				Timeout:   opt.DialTimeout,
-				return conn, err
+				KeepAlive: 5 * time.Minute,
+			}
+			if opt.TLSConfig == nil {
+				return netDialer.Dial(opt.Network, opt.Addr)
+			} else {
+				return tls.DialWithDialer(netDialer, opt.Network, opt.Addr, opt.TLSConfig)
 			}
-			t := tls.Client(conn, opt.TLSConfig)
-			return t, t.Handshake()
 		}
 	}
 	if opt.PoolSize == 0 {
@@ -192,6 +203,8 @@ func newConnPool(opt *Options) *pool.ConnPool {
 	return pool.NewConnPool(&pool.Options{
 		Dialer:             opt.Dialer,
 		PoolSize:           opt.PoolSize,
+		MinIdleConns:       opt.MinIdleConns,
+		MaxConnAge:         opt.MaxConnAge,
 		PoolTimeout:        opt.PoolTimeout,
 		IdleTimeout:        opt.IdleTimeout,
 		IdleCheckFrequency: opt.IdleCheckFrequency,

vendor/github.com/go-redis/redis/parser.go

@@ -1,394 +0,0 @@
-package redis
-
-import (
-	"fmt"
-	"net"
-	"strconv"
-	"time"
-
-	"github.com/go-redis/redis/internal/proto"
-)
-
-// Implements proto.MultiBulkParse
-func sliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	vals := make([]interface{}, 0, n)
-	for i := int64(0); i < n; i++ {
-		v, err := rd.ReadReply(sliceParser)
-		if err != nil {
-			if err == Nil {
-				vals = append(vals, nil)
-				continue
-			}
-			if err, ok := err.(proto.RedisError); ok {
-				vals = append(vals, err)
-				continue
-			}
-			return nil, err
-		}
-
-		switch v := v.(type) {
-		case []byte:
-			vals = append(vals, string(v))
-		default:
-			vals = append(vals, v)
-		}
-	}
-	return vals, nil
-}
-
-// Implements proto.MultiBulkParse
-func boolSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	bools := make([]bool, 0, n)
-	for i := int64(0); i < n; i++ {
-		n, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
-		}
-		bools = append(bools, n == 1)
-	}
-	return bools, nil
-}
-
-// Implements proto.MultiBulkParse
-func stringSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	ss := make([]string, 0, n)
-	for i := int64(0); i < n; i++ {
-		s, err := rd.ReadStringReply()
-		if err == Nil {
-			ss = append(ss, "")
-		} else if err != nil {
-			return nil, err
-		} else {
-			ss = append(ss, s)
-		}
-	}
-	return ss, nil
-}
-
-// Implements proto.MultiBulkParse
-func stringStringMapParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]string, n/2)
-	for i := int64(0); i < n; i += 2 {
-		key, err := rd.ReadStringReply()
-		if err != nil {
-			return nil, err
-		}
-
-		value, err := rd.ReadStringReply()
-		if err != nil {
-			return nil, err
-		}
-
-		m[key] = value
-	}
-	return m, nil
-}
-
-// Implements proto.MultiBulkParse
-func stringIntMapParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]int64, n/2)
-	for i := int64(0); i < n; i += 2 {
-		key, err := rd.ReadStringReply()
-		if err != nil {
-			return nil, err
-		}
-
-		n, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
-		}
-
-		m[key] = n
-	}
-	return m, nil
-}
-
-// Implements proto.MultiBulkParse
-func stringStructMapParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]struct{}, n)
-	for i := int64(0); i < n; i++ {
-		key, err := rd.ReadStringReply()
-		if err != nil {
-			return nil, err
-		}
-
-		m[key] = struct{}{}
-	}
-	return m, nil
-}
-
-// Implements proto.MultiBulkParse
-func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	zz := make([]Z, n/2)
-	for i := int64(0); i < n; i += 2 {
-		var err error
-
-		z := &zz[i/2]
-
-		z.Member, err = rd.ReadStringReply()
-		if err != nil {
-			return nil, err
-		}
-
-		z.Score, err = rd.ReadFloatReply()
-		if err != nil {
-			return nil, err
-		}
-	}
-	return zz, nil
-}
-
-// Implements proto.MultiBulkParse
-func clusterSlotsParser(rd *proto.Reader, n int64) (interface{}, error) {
-	slots := make([]ClusterSlot, n)
-	for i := 0; i < len(slots); i++ {
-		n, err := rd.ReadArrayLen()
-		if err != nil {
-			return nil, err
-		}
-		if n < 2 {
-			err := fmt.Errorf("redis: got %d elements in cluster info, expected at least 2", n)
-			return nil, err
-		}
-
-		start, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
-		}
-
-		end, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
-		}
-
-		nodes := make([]ClusterNode, n-2)
-		for j := 0; j < len(nodes); j++ {
-			n, err := rd.ReadArrayLen()
-			if err != nil {
-				return nil, err
-			}
-			if n != 2 && n != 3 {
-				err := fmt.Errorf("got %d elements in cluster info address, expected 2 or 3", n)
-				return nil, err
-			}
-
-			ip, err := rd.ReadStringReply()
-			if err != nil {
-				return nil, err
-			}
-
-			port, err := rd.ReadIntReply()
-			if err != nil {
-				return nil, err
-			}
-			nodes[j].Addr = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
-
-			if n == 3 {
-				id, err := rd.ReadStringReply()
-				if err != nil {
-					return nil, err
-				}
-				nodes[j].Id = id
-			}
-		}
-
-		slots[i] = ClusterSlot{
-			Start: int(start),
-			End:   int(end),
-			Nodes: nodes,
-		}
-	}
-	return slots, nil
-}
-
-func newGeoLocationParser(q *GeoRadiusQuery) proto.MultiBulkParse {
-	return func(rd *proto.Reader, n int64) (interface{}, error) {
-		var loc GeoLocation
-		var err error
-
-		loc.Name, err = rd.ReadStringReply()
-		if err != nil {
-			return nil, err
-		}
-		if q.WithDist {
-			loc.Dist, err = rd.ReadFloatReply()
-			if err != nil {
-				return nil, err
-			}
-		}
-		if q.WithGeoHash {
-			loc.GeoHash, err = rd.ReadIntReply()
-			if err != nil {
-				return nil, err
-			}
-		}
-		if q.WithCoord {
-			n, err := rd.ReadArrayLen()
-			if err != nil {
-				return nil, err
-			}
-			if n != 2 {
-				return nil, fmt.Errorf("got %d coordinates, expected 2", n)
-			}
-
-			loc.Longitude, err = rd.ReadFloatReply()
-			if err != nil {
-				return nil, err
-			}
-			loc.Latitude, err = rd.ReadFloatReply()
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		return &loc, nil
-	}
-}
-
-func newGeoLocationSliceParser(q *GeoRadiusQuery) proto.MultiBulkParse {
-	return func(rd *proto.Reader, n int64) (interface{}, error) {
-		locs := make([]GeoLocation, 0, n)
-		for i := int64(0); i < n; i++ {
-			v, err := rd.ReadReply(newGeoLocationParser(q))
-			if err != nil {
-				return nil, err
-			}
-			switch vv := v.(type) {
-			case []byte:
-				locs = append(locs, GeoLocation{
-					Name: string(vv),
-				})
-			case *GeoLocation:
-				locs = append(locs, *vv)
-			default:
-				return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v)
-			}
-		}
-		return locs, nil
-	}
-}
-
-func geoPosParser(rd *proto.Reader, n int64) (interface{}, error) {
-	var pos GeoPos
-	var err error
-
-	pos.Longitude, err = rd.ReadFloatReply()
-	if err != nil {
-		return nil, err
-	}
-
-	pos.Latitude, err = rd.ReadFloatReply()
-	if err != nil {
-		return nil, err
-	}
-
-	return &pos, nil
-}
-
-func geoPosSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	positions := make([]*GeoPos, 0, n)
-	for i := int64(0); i < n; i++ {
-		v, err := rd.ReadReply(geoPosParser)
-		if err != nil {
-			if err == Nil {
-				positions = append(positions, nil)
-				continue
-			}
-			return nil, err
-		}
-		switch v := v.(type) {
-		case *GeoPos:
-			positions = append(positions, v)
-		default:
-			return nil, fmt.Errorf("got %T, expected *GeoPos", v)
-		}
-	}
-	return positions, nil
-}
-
-func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
-	var cmd CommandInfo
-	var err error
-
-	if n != 6 {
-		return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 6", n)
-	}
-
-	cmd.Name, err = rd.ReadStringReply()
-	if err != nil {
-		return nil, err
-	}
-
-	arity, err := rd.ReadIntReply()
-	if err != nil {
-		return nil, err
-	}
-	cmd.Arity = int8(arity)
-
-	flags, err := rd.ReadReply(stringSliceParser)
-	if err != nil {
-		return nil, err
-	}
-	cmd.Flags = flags.([]string)
-
-	firstKeyPos, err := rd.ReadIntReply()
-	if err != nil {
-		return nil, err
-	}
-	cmd.FirstKeyPos = int8(firstKeyPos)
-
-	lastKeyPos, err := rd.ReadIntReply()
-	if err != nil {
-		return nil, err
-	}
-	cmd.LastKeyPos = int8(lastKeyPos)
-
-	stepCount, err := rd.ReadIntReply()
-	if err != nil {
-		return nil, err
-	}
-	cmd.StepCount = int8(stepCount)
-
-	for _, flag := range cmd.Flags {
-		if flag == "readonly" {
-			cmd.ReadOnly = true
-			break
-		}
-	}
-
-	return &cmd, nil
-}
-
-// Implements proto.MultiBulkParse
-func commandInfoSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]*CommandInfo, n)
-	for i := int64(0); i < n; i++ {
-		v, err := rd.ReadReply(commandInfoParser)
-		if err != nil {
-			return nil, err
-		}
-		vv := v.(*CommandInfo)
-		m[vv.Name] = vv
-
-	}
-	return m, nil
-}
-
-// Implements proto.MultiBulkParse
-func timeParser(rd *proto.Reader, n int64) (interface{}, error) {
-	if n != 2 {
-		return nil, fmt.Errorf("got %d elements, expected 2", n)
-	}
-
-	sec, err := rd.ReadInt()
-	if err != nil {
-		return nil, err
-	}
-
-	microsec, err := rd.ReadInt()
-	if err != nil {
-		return nil, err
-	}
-
-	return time.Unix(sec, microsec*1000), nil
-}

vendor/github.com/go-redis/redis/pipeline.go

@@ -31,6 +31,7 @@ type Pipeline struct {
 	closed bool
 }
 
+// Process queues the cmd for later execution.
 func (c *Pipeline) Process(cmd Cmder) error {
 	c.mu.Lock()
 	c.cmds = append(c.cmds, cmd)

vendor/github.com/go-redis/redis/pubsub.go

@@ -2,20 +2,20 @@ package redis
 
 import (
 	"fmt"
-	"net"
 	"sync"
 	"time"
 
 	"github.com/go-redis/redis/internal"
 	"github.com/go-redis/redis/internal/pool"
+	"github.com/go-redis/redis/internal/proto"
 )
 
-// PubSub implements Pub/Sub commands as described in
+// PubSub implements Pub/Sub commands bas described in
-// http://redis.io/topics/pubsub. It's NOT safe for concurrent use by
+// http://redis.io/topics/pubsub. Message receiving is NOT safe
-// multiple goroutines.
+// for concurrent use by multiple goroutines.
 //
-// PubSub automatically resubscribes to the channels and patterns
+// PubSub automatically reconnects to Redis Server and resubscribes
-// when Redis becomes unavailable.
+// to the channels in case of network errors.
 type PubSub struct {
 	opt *Options
 
@@ -27,11 +27,17 @@ type PubSub struct {
 	channels map[string]struct{}
 	patterns map[string]struct{}
 	closed   bool
+	exit     chan struct{}
 
 	cmd *Cmd
 
 	chOnce sync.Once
 	ch     chan *Message
+	ping   chan struct{}
+}
+
+func (c *PubSub) init() {
+	c.exit = make(chan struct{})
 }
 
 func (c *PubSub) conn() (*pool.Conn, error) {
@@ -41,7 +47,7 @@ func (c *PubSub) conn() (*pool.Conn, error) {
 	return cn, err
 }
 
-func (c *PubSub) _conn(channels []string) (*pool.Conn, error) {
+func (c *PubSub) _conn(newChannels []string) (*pool.Conn, error) {
 	if c.closed {
 		return nil, pool.ErrClosed
 	}
@@ -50,6 +56,9 @@ func (c *PubSub) _conn(channels []string) (*pool.Conn, error) {
 		return c.cn, nil
 	}
 
+	channels := mapKeys(c.channels)
+	channels = append(channels, newChannels...)
+
 	cn, err := c.newConn(channels)
 	if err != nil {
 		return nil, err
@@ -64,61 +73,81 @@ func (c *PubSub) _conn(channels []string) (*pool.Conn, error) {
 	return cn, nil
 }
 
+func (c *PubSub) writeCmd(cn *pool.Conn, cmd Cmder) error {
+	return cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmd(wr, cmd)
+	})
+}
+
 func (c *PubSub) resubscribe(cn *pool.Conn) error {
 	var firstErr error
+
 	if len(c.channels) > 0 {
-		channels := make([]string, len(c.channels))
+		err := c._subscribe(cn, "subscribe", mapKeys(c.channels))
-		i := 0
+		if err != nil && firstErr == nil {
-		for channel := range c.channels {
-			channels[i] = channel
-			i++
-		}
-		if err := c._subscribe(cn, "subscribe", channels...); err != nil && firstErr == nil {
 			firstErr = err
 		}
 	}
+
 	if len(c.patterns) > 0 {
-		patterns := make([]string, len(c.patterns))
+		err := c._subscribe(cn, "psubscribe", mapKeys(c.patterns))
-		i := 0
+		if err != nil && firstErr == nil {
-		for pattern := range c.patterns {
-			patterns[i] = pattern
-			i++
-		}
-		if err := c._subscribe(cn, "psubscribe", patterns...); err != nil && firstErr == nil {
 			firstErr = err
 		}
 	}
+
 	return firstErr
 }
 
-func (c *PubSub) _subscribe(cn *pool.Conn, redisCmd string, channels ...string) error {
+func mapKeys(m map[string]struct{}) []string {
-	args := make([]interface{}, 1+len(channels))
+	s := make([]string, len(m))
-	args[0] = redisCmd
+	i := 0
-	for i, channel := range channels {
+	for k := range m {
-		args[1+i] = channel
+		s[i] = k
+		i++
 	}
-	cmd := NewSliceCmd(args...)
+	return s
-
-	cn.SetWriteTimeout(c.opt.WriteTimeout)
-	return writeCmd(cn, cmd)
 }
 
-func (c *PubSub) releaseConn(cn *pool.Conn, err error) {
+func (c *PubSub) _subscribe(
+	cn *pool.Conn, redisCmd string, channels []string,
+) error {
+	args := make([]interface{}, 0, 1+len(channels))
+	args = append(args, redisCmd)
+	for _, channel := range channels {
+		args = append(args, channel)
+	}
+	cmd := NewSliceCmd(args...)
+	return c.writeCmd(cn, cmd)
+}
+
+func (c *PubSub) releaseConn(cn *pool.Conn, err error, allowTimeout bool) {
 	c.mu.Lock()
-	c._releaseConn(cn, err)
+	c._releaseConn(cn, err, allowTimeout)
 	c.mu.Unlock()
 }
 
-func (c *PubSub) _releaseConn(cn *pool.Conn, err error) {
+func (c *PubSub) _releaseConn(cn *pool.Conn, err error, allowTimeout bool) {
 	if c.cn != cn {
 		return
 	}
-	if internal.IsBadConn(err, true) {
+	if internal.IsBadConn(err, allowTimeout) {
-		_ = c.closeTheCn()
+		c._reconnect(err)
 	}
 }
 
-func (c *PubSub) closeTheCn() error {
+func (c *PubSub) _reconnect(reason error) {
+	_ = c._closeTheCn(reason)
+	_, _ = c._conn(nil)
+}
+
+func (c *PubSub) _closeTheCn(reason error) error {
+	if c.cn == nil {
+		return nil
+	}
+	if !c.closed {
+		internal.Logf("redis: discarding bad PubSub connection: %s", reason)
+	}
 	err := c.closeConn(c.cn)
 	c.cn = nil
 	return err
@@ -132,25 +161,25 @@ func (c *PubSub) Close() error {
 		return pool.ErrClosed
 	}
 	c.closed = true
+	close(c.exit)
 
-	if c.cn != nil {
+	err := c._closeTheCn(pool.ErrClosed)
-		return c.closeTheCn()
+	return err
-	}
-	return nil
 }
 
 // Subscribe the client to the specified channels. It returns
 // empty subscription if there are no channels.
 func (c *PubSub) Subscribe(channels ...string) error {
 	c.mu.Lock()
+	defer c.mu.Unlock()
+
 	err := c.subscribe("subscribe", channels...)
 	if c.channels == nil {
 		c.channels = make(map[string]struct{})
 	}
-	for _, channel := range channels {
+	for _, s := range channels {
-		c.channels[channel] = struct{}{}
+		c.channels[s] = struct{}{}
 	}
-	c.mu.Unlock()
 	return err
 }
 
@@ -158,14 +187,15 @@ func (c *PubSub) Subscribe(channels ...string) error {
 // empty subscription if there are no patterns.
 func (c *PubSub) PSubscribe(patterns ...string) error {
 	c.mu.Lock()
+	defer c.mu.Unlock()
+
 	err := c.subscribe("psubscribe", patterns...)
 	if c.patterns == nil {
 		c.patterns = make(map[string]struct{})
 	}
-	for _, pattern := range patterns {
+	for _, s := range patterns {
-		c.patterns[pattern] = struct{}{}
+		c.patterns[s] = struct{}{}
 	}
-	c.mu.Unlock()
 	return err
 }
 
@@ -173,11 +203,12 @@ func (c *PubSub) PSubscribe(patterns ...string) error {
 // them if none is given.
 func (c *PubSub) Unsubscribe(channels ...string) error {
 	c.mu.Lock()
-	err := c.subscribe("unsubscribe", channels...)
+	defer c.mu.Unlock()
+
 	for _, channel := range channels {
 		delete(c.channels, channel)
 	}
-	c.mu.Unlock()
+	err := c.subscribe("unsubscribe", channels...)
 	return err
 }
 
@@ -185,11 +216,12 @@ func (c *PubSub) Unsubscribe(channels ...string) error {
 // them if none is given.
 func (c *PubSub) PUnsubscribe(patterns ...string) error {
 	c.mu.Lock()
-	err := c.subscribe("punsubscribe", patterns...)
+	defer c.mu.Unlock()
+
 	for _, pattern := range patterns {
 		delete(c.patterns, pattern)
 	}
-	c.mu.Unlock()
+	err := c.subscribe("punsubscribe", patterns...)
 	return err
 }
 
@@ -199,8 +231,8 @@ func (c *PubSub) subscribe(redisCmd string, channels ...string) error {
 		return err
 	}
 
-	err = c._subscribe(cn, redisCmd, channels...)
+	err = c._subscribe(cn, redisCmd, channels)
-	c._releaseConn(cn, err)
+	c._releaseConn(cn, err, false)
 	return err
 }
 
@@ -216,9 +248,8 @@ func (c *PubSub) Ping(payload ...string) error {
 		return err
 	}
 
-	cn.SetWriteTimeout(c.opt.WriteTimeout)
+	err = c.writeCmd(cn, cmd)
-	err = writeCmd(cn, cmd)
+	c.releaseConn(cn, err, false)
-	c.releaseConn(cn, err)
 	return err
 }
 
@@ -297,8 +328,8 @@ func (c *PubSub) newMessage(reply interface{}) (interface{}, error) {
 }
 
 // ReceiveTimeout acts like Receive but returns an error if message
-// is not received in time. This is low-level API and most clients
+// is not received in time. This is low-level API and in most cases
-// should use ReceiveMessage.
+// Channel should be used instead.
 func (c *PubSub) ReceiveTimeout(timeout time.Duration) (interface{}, error) {
 	if c.cmd == nil {
 		c.cmd = NewCmd()
@@ -309,9 +340,11 @@ func (c *PubSub) ReceiveTimeout(timeout time.Duration) (interface{}, error) {
 		return nil, err
 	}
 
-	cn.SetReadTimeout(timeout)
+	err = cn.WithReader(timeout, func(rd *proto.Reader) error {
-	err = c.cmd.readReply(cn)
+		return c.cmd.readReply(rd)
-	c.releaseConn(cn, err)
+	})
+
+	c.releaseConn(cn, err, timeout > 0)
 	if err != nil {
 		return nil, err
 	}
@@ -320,49 +353,23 @@ func (c *PubSub) ReceiveTimeout(timeout time.Duration) (interface{}, error) {
 }
 
 // Receive returns a message as a Subscription, Message, Pong or error.
-// See PubSub example for details. This is low-level API and most clients
+// See PubSub example for details. This is low-level API and in most cases
-// should use ReceiveMessage.
+// Channel should be used instead.
 func (c *PubSub) Receive() (interface{}, error) {
 	return c.ReceiveTimeout(0)
 }
 
-// ReceiveMessage returns a Message or error ignoring Subscription or Pong
+// ReceiveMessage returns a Message or error ignoring Subscription and Pong
-// messages. It automatically reconnects to Redis Server and resubscribes
+// messages. This is low-level API and in most cases Channel should be used
-// to channels in case of network errors.
+// instead.
 func (c *PubSub) ReceiveMessage() (*Message, error) {
-	return c.receiveMessage(5 * time.Second)
-}
-
-func (c *PubSub) receiveMessage(timeout time.Duration) (*Message, error) {
-	var errNum uint
 	for {
-		msgi, err := c.ReceiveTimeout(timeout)
+		msg, err := c.Receive()
 		if err != nil {
-			if !internal.IsNetworkError(err) {
+			return nil, err
-				return nil, err
-			}
-
-			errNum++
-			if errNum < 3 {
-				if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
-					err := c.Ping()
-					if err != nil {
-						internal.Logf("PubSub.Ping failed: %s", err)
-					}
-				}
-			} else {
-				// 3 consequent errors - connection is broken or
-				// Redis Server is down.
-				// Sleep to not exceed max number of open connections.
-				time.Sleep(time.Second)
-			}
-			continue
 		}
 
-		// Reset error number, because we received a message.
+		switch msg := msg.(type) {
-		errNum = 0
-
-		switch msg := msgi.(type) {
 		case *Subscription:
 			// Ignore.
 		case *Pong:
@@ -370,30 +377,93 @@ func (c *PubSub) receiveMessage(timeout time.Duration) (*Message, error) {
 		case *Message:
 			return msg, nil
 		default:
-			return nil, fmt.Errorf("redis: unknown message: %T", msgi)
+			err := fmt.Errorf("redis: unknown message: %T", msg)
+			return nil, err
 		}
 	}
 }
 
 // Channel returns a Go channel for concurrently receiving messages.
-// The channel is closed with PubSub. Receive or ReceiveMessage APIs
+// It periodically sends Ping messages to test connection health.
-// can not be used after channel is created.
+// The channel is closed with PubSub. Receive* APIs can not be used
+// after channel is created.
 func (c *PubSub) Channel() <-chan *Message {
-	c.chOnce.Do(func() {
+	c.chOnce.Do(c.initChannel)
-		c.ch = make(chan *Message, 100)
-		go func() {
-			for {
-				msg, err := c.ReceiveMessage()
-				if err != nil {
-					if err == pool.ErrClosed {
-						break
-					}
-					continue
-				}
-				c.ch <- msg
-			}
-			close(c.ch)
-		}()
-	})
 	return c.ch
 }
+
+func (c *PubSub) initChannel() {
+	c.ch = make(chan *Message, 100)
+	c.ping = make(chan struct{}, 10)
+
+	go func() {
+		var errCount int
+		for {
+			msg, err := c.Receive()
+			if err != nil {
+				if err == pool.ErrClosed {
+					close(c.ch)
+					return
+				}
+				if errCount > 0 {
+					time.Sleep(c.retryBackoff(errCount))
+				}
+				errCount++
+				continue
+			}
+			errCount = 0
+
+			// Any message is as good as a ping.
+			select {
+			case c.ping <- struct{}{}:
+			default:
+			}
+
+			switch msg := msg.(type) {
+			case *Subscription:
+				// Ignore.
+			case *Pong:
+				// Ignore.
+			case *Message:
+				c.ch <- msg
+			default:
+				internal.Logf("redis: unknown message: %T", msg)
+			}
+		}
+	}()
+
+	go func() {
+		const timeout = 5 * time.Second
+
+		timer := time.NewTimer(timeout)
+		timer.Stop()
+
+		healthy := true
+		var pingErr error
+		for {
+			timer.Reset(timeout)
+			select {
+			case <-c.ping:
+				healthy = true
+				if !timer.Stop() {
+					<-timer.C
+				}
+			case <-timer.C:
+				pingErr = c.Ping()
+				if healthy {
+					healthy = false
+				} else {
+					c.mu.Lock()
+					c._reconnect(pingErr)
+					c.mu.Unlock()
+				}
+			case <-c.exit:
+				return
+			}
+		}
+	}()
+}
+
+func (c *PubSub) retryBackoff(attempt int) time.Duration {
+	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
+}

vendor/github.com/go-redis/redis/redis.go

@@ -50,7 +50,7 @@ func (c *baseClient) newConn() (*pool.Conn, error) {
 		return nil, err
 	}
 
-	if !cn.Inited {
+	if cn.InitedAt.IsZero() {
 		if err := c.initConn(cn); err != nil {
 			_ = c.connPool.CloseConn(cn)
 			return nil, err
@@ -66,7 +66,7 @@ func (c *baseClient) getConn() (*pool.Conn, error) {
 		return nil, err
 	}
 
-	if !cn.Inited {
+	if cn.InitedAt.IsZero() {
 		err := c.initConn(cn)
 		if err != nil {
 			c.connPool.Remove(cn)
@@ -88,7 +88,7 @@ func (c *baseClient) releaseConn(cn *pool.Conn, err error) bool {
 }
 
 func (c *baseClient) initConn(cn *pool.Conn) error {
-	cn.Inited = true
+	cn.InitedAt = time.Now()
 
 	if c.opt.Password == "" &&
 		c.opt.DB == 0 &&
@@ -123,8 +123,17 @@ func (c *baseClient) initConn(cn *pool.Conn) error {
 	return nil
 }
 
+// Do creates a Cmd from the args and processes the cmd.
+func (c *baseClient) Do(args ...interface{}) *Cmd {
+	cmd := NewCmd(args...)
+	c.Process(cmd)
+	return cmd
+}
+
 // WrapProcess wraps function that processes Redis commands.
-func (c *baseClient) WrapProcess(fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error) {
+func (c *baseClient) WrapProcess(
+	fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error,
+) {
 	c.process = fn(c.process)
 }
 
@@ -147,8 +156,10 @@ func (c *baseClient) defaultProcess(cmd Cmder) error {
 			return err
 		}
 
-		cn.SetWriteTimeout(c.opt.WriteTimeout)
+		err = cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-		if err := writeCmd(cn, cmd); err != nil {
+			return writeCmd(wr, cmd)
+		})
+		if err != nil {
 			c.releaseConn(cn, err)
 			cmd.setErr(err)
 			if internal.IsRetryableError(err, true) {
@@ -157,8 +168,9 @@ func (c *baseClient) defaultProcess(cmd Cmder) error {
 			return err
 		}
 
-		cn.SetReadTimeout(c.cmdTimeout(cmd))
+		err = cn.WithReader(c.cmdTimeout(cmd), func(rd *proto.Reader) error {
-		err = cmd.readReply(cn)
+			return cmd.readReply(rd)
+		})
 		c.releaseConn(cn, err)
 		if err != nil && internal.IsRetryableError(err, cmd.readTimeout() == nil) {
 			continue
@@ -176,9 +188,8 @@ func (c *baseClient) retryBackoff(attempt int) time.Duration {
 
 func (c *baseClient) cmdTimeout(cmd Cmder) time.Duration {
 	if timeout := cmd.readTimeout(); timeout != nil {
-		return *timeout
+		return readTimeout(*timeout)
 	}
-
 	return c.opt.ReadTimeout
 }
 
@@ -244,24 +255,27 @@ func (c *baseClient) generalProcessPipeline(cmds []Cmder, p pipelineProcessor) e
 			break
 		}
 	}
-	return firstCmdsErr(cmds)
+	return cmdsFirstErr(cmds)
 }
 
 func (c *baseClient) pipelineProcessCmds(cn *pool.Conn, cmds []Cmder) (bool, error) {
-	cn.SetWriteTimeout(c.opt.WriteTimeout)
+	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-	if err := writeCmd(cn, cmds...); err != nil {
+		return writeCmd(wr, cmds...)
+	})
+	if err != nil {
 		setCmdsErr(cmds, err)
 		return true, err
 	}
 
-	// Set read timeout for all commands.
+	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-	cn.SetReadTimeout(c.opt.ReadTimeout)
+		return pipelineReadCmds(rd, cmds)
-	return true, pipelineReadCmds(cn, cmds)
+	})
+	return true, err
 }
 
-func pipelineReadCmds(cn *pool.Conn, cmds []Cmder) error {
+func pipelineReadCmds(rd *proto.Reader, cmds []Cmder) error {
 	for _, cmd := range cmds {
-		err := cmd.readReply(cn)
+		err := cmd.readReply(rd)
 		if err != nil && !internal.IsRedisError(err) {
 			return err
 		}
@@ -270,47 +284,50 @@ func pipelineReadCmds(cn *pool.Conn, cmds []Cmder) error {
 }
 
 func (c *baseClient) txPipelineProcessCmds(cn *pool.Conn, cmds []Cmder) (bool, error) {
-	cn.SetWriteTimeout(c.opt.WriteTimeout)
+	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-	if err := txPipelineWriteMulti(cn, cmds); err != nil {
+		return txPipelineWriteMulti(wr, cmds)
+	})
+	if err != nil {
 		setCmdsErr(cmds, err)
 		return true, err
 	}
 
-	// Set read timeout for all commands.
+	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-	cn.SetReadTimeout(c.opt.ReadTimeout)
+		err := txPipelineReadQueued(rd, cmds)
-
+		if err != nil {
-	if err := c.txPipelineReadQueued(cn, cmds); err != nil {
+			setCmdsErr(cmds, err)
-		setCmdsErr(cmds, err)
+			return err
-		return false, err
+		}
-	}
+		return pipelineReadCmds(rd, cmds)
-
+	})
-	return false, pipelineReadCmds(cn, cmds)
+	return false, err
 }
 
-func txPipelineWriteMulti(cn *pool.Conn, cmds []Cmder) error {
+func txPipelineWriteMulti(wr *proto.Writer, cmds []Cmder) error {
 	multiExec := make([]Cmder, 0, len(cmds)+2)
 	multiExec = append(multiExec, NewStatusCmd("MULTI"))
 	multiExec = append(multiExec, cmds...)
 	multiExec = append(multiExec, NewSliceCmd("EXEC"))
-	return writeCmd(cn, multiExec...)
+	return writeCmd(wr, multiExec...)
 }
 
-func (c *baseClient) txPipelineReadQueued(cn *pool.Conn, cmds []Cmder) error {
+func txPipelineReadQueued(rd *proto.Reader, cmds []Cmder) error {
 	// Parse queued replies.
 	var statusCmd StatusCmd
-	if err := statusCmd.readReply(cn); err != nil {
+	err := statusCmd.readReply(rd)
+	if err != nil {
 		return err
 	}
 
 	for _ = range cmds {
-		err := statusCmd.readReply(cn)
+		err = statusCmd.readReply(rd)
 		if err != nil && !internal.IsRedisError(err) {
 			return err
 		}
 	}
 
 	// Parse number of replies.
-	line, err := cn.Rd.ReadLine()
+	line, err := rd.ReadLine()
 	if err != nil {
 		if err == Nil {
 			err = TxFailedErr
@@ -424,7 +441,7 @@ func (c *Client) TxPipeline() Pipeliner {
 }
 
 func (c *Client) pubSub() *PubSub {
-	return &PubSub{
+	pubsub := &PubSub{
 		opt: c.opt,
 
 		newConn: func(channels []string) (*pool.Conn, error) {
@@ -432,6 +449,8 @@ func (c *Client) pubSub() *PubSub {
 		},
 		closeConn: c.connPool.CloseConn,
 	}
+	pubsub.init()
+	return pubsub
 }
 
 // Subscribe subscribes the client to the specified channels.

vendor/github.com/go-redis/redis/result.go

@@ -53,7 +53,7 @@ func NewBoolResult(val bool, err error) *BoolCmd {
 // NewStringResult returns a StringCmd initialised with val and err for testing
 func NewStringResult(val string, err error) *StringCmd {
 	var cmd StringCmd
-	cmd.val = []byte(val)
+	cmd.val = val
 	cmd.setErr(err)
 	return &cmd
 }

vendor/github.com/go-redis/redis/ring.go

@@ -16,7 +16,8 @@ import (
 	"github.com/go-redis/redis/internal/pool"
 )
 
-const nreplicas = 100
+// Hash is type of hash function used in consistent hash.
+type Hash consistenthash.Hash
 
 var errRingShardsDown = errors.New("redis: all ring shards are down")
 
@@ -30,6 +31,27 @@ type RingOptions struct {
 	// Shard is considered down after 3 subsequent failed checks.
 	HeartbeatFrequency time.Duration
 
+	// Hash function used in consistent hash.
+	// Default is crc32.ChecksumIEEE.
+	Hash Hash
+
+	// Number of replicas in consistent hash.
+	// Default is 100 replicas.
+	//
+	// Higher number of replicas will provide less deviation, that is keys will be
+	// distributed to nodes more evenly.
+	//
+	// Following is deviation for common nreplicas:
+	//  --------------------------------------------------------
+	//  | nreplicas | standard error | 99% confidence interval |
+	//  |     10    |     0.3152     |      (0.37, 1.98)       |
+	//  |    100    |     0.0997     |      (0.76, 1.28)       |
+	//  |   1000    |     0.0316     |      (0.92, 1.09)       |
+	//  --------------------------------------------------------
+	//
+	//  See https://arxiv.org/abs/1406.2294 for reference
+	HashReplicas int
+
 	// Following options are copied from Options struct.
 
 	OnConnect func(*Conn) error
@@ -46,6 +68,8 @@ type RingOptions struct {
 	WriteTimeout time.Duration
 
 	PoolSize           int
+	MinIdleConns       int
+	MaxConnAge         time.Duration
 	PoolTimeout        time.Duration
 	IdleTimeout        time.Duration
 	IdleCheckFrequency time.Duration
@@ -56,6 +80,10 @@ func (opt *RingOptions) init() {
 		opt.HeartbeatFrequency = 500 * time.Millisecond
 	}
 
+	if opt.HashReplicas == 0 {
+		opt.HashReplicas = 100
+	}
+
 	switch opt.MinRetryBackoff {
 	case -1:
 		opt.MinRetryBackoff = 0
@@ -82,6 +110,8 @@ func (opt *RingOptions) clientOptions() *Options {
 		WriteTimeout: opt.WriteTimeout,
 
 		PoolSize:           opt.PoolSize,
+		MinIdleConns:       opt.MinIdleConns,
+		MaxConnAge:         opt.MaxConnAge,
 		PoolTimeout:        opt.PoolTimeout,
 		IdleTimeout:        opt.IdleTimeout,
 		IdleCheckFrequency: opt.IdleCheckFrequency,
@@ -133,16 +163,21 @@ func (shard *ringShard) Vote(up bool) bool {
 //------------------------------------------------------------------------------
 
 type ringShards struct {
+	opt *RingOptions
+
 	mu     sync.RWMutex
 	hash   *consistenthash.Map
 	shards map[string]*ringShard // read only
 	list   []*ringShard          // read only
+	len    int
 	closed bool
 }
 
-func newRingShards() *ringShards {
+func newRingShards(opt *RingOptions) *ringShards {
 	return &ringShards{
-		hash:   consistenthash.New(nreplicas, nil),
+		opt: opt,
+
+		hash:   newConsistentHash(opt),
 		shards: make(map[string]*ringShard),
 	}
 }
@@ -238,18 +273,28 @@ func (c *ringShards) Heartbeat(frequency time.Duration) {
 
 // rebalance removes dead shards from the Ring.
 func (c *ringShards) rebalance() {
-	hash := consistenthash.New(nreplicas, nil)
+	hash := newConsistentHash(c.opt)
+	var shardsNum int
 	for name, shard := range c.shards {
 		if shard.IsUp() {
 			hash.Add(name)
+			shardsNum++
 		}
 	}
 
 	c.mu.Lock()
 	c.hash = hash
+	c.len = shardsNum
 	c.mu.Unlock()
 }
 
+func (c *ringShards) Len() int {
+	c.mu.RLock()
+	l := c.len
+	c.mu.RUnlock()
+	return l
+}
+
 func (c *ringShards) Close() error {
 	c.mu.Lock()
 	defer c.mu.Unlock()
@@ -305,7 +350,7 @@ func NewRing(opt *RingOptions) *Ring {
 
 	ring := &Ring{
 		opt:    opt,
-		shards: newRingShards(),
+		shards: newRingShards(opt),
 	}
 	ring.cmdsInfoCache = newCmdsInfoCache(ring.cmdsInfo)
 
@@ -363,11 +408,16 @@ func (c *Ring) PoolStats() *PoolStats {
 		acc.Misses += s.Misses
 		acc.Timeouts += s.Timeouts
 		acc.TotalConns += s.TotalConns
-		acc.FreeConns += s.FreeConns
+		acc.IdleConns += s.IdleConns
 	}
 	return &acc
 }
 
+// Len returns the current number of shards in the ring.
+func (c *Ring) Len() int {
+	return c.shards.Len()
+}
+
 // Subscribe subscribes the client to the specified channels.
 func (c *Ring) Subscribe(channels ...string) *PubSub {
 	if len(channels) == 0 {
@@ -466,7 +516,16 @@ func (c *Ring) cmdShard(cmd Cmder) (*ringShard, error) {
 	return c.shards.GetByKey(firstKey)
 }
 
-func (c *Ring) WrapProcess(fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error) {
+// Do creates a Cmd from the args and processes the cmd.
+func (c *Ring) Do(args ...interface{}) *Cmd {
+	cmd := NewCmd(args...)
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *Ring) WrapProcess(
+	fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error,
+) {
 	c.ForEachShard(func(c *Client) error {
 		c.WrapProcess(fn)
 		return nil
@@ -552,7 +611,7 @@ func (c *Ring) defaultProcessPipeline(cmds []Cmder) error {
 		cmdsMap = failedCmdsMap
 	}
 
-	return firstCmdsErr(cmds)
+	return cmdsFirstErr(cmds)
 }
 
 func (c *Ring) TxPipeline() Pipeliner {
@@ -570,3 +629,7 @@ func (c *Ring) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 func (c *Ring) Close() error {
 	return c.shards.Close()
 }
+
+func newConsistentHash(opt *RingOptions) *consistenthash.Map {
+	return consistenthash.New(opt.HashReplicas, consistenthash.Hash(opt.Hash))
+}

vendor/github.com/go-redis/redis/sentinel.go

@@ -29,13 +29,17 @@ type FailoverOptions struct {
 	Password string
 	DB       int
 
-	MaxRetries int
+	MaxRetries      int
+	MinRetryBackoff time.Duration
+	MaxRetryBackoff time.Duration
 
 	DialTimeout  time.Duration
 	ReadTimeout  time.Duration
 	WriteTimeout time.Duration
 
 	PoolSize           int
+	MinIdleConns       int
+	MaxConnAge         time.Duration
 	PoolTimeout        time.Duration
 	IdleTimeout        time.Duration
 	IdleCheckFrequency time.Duration
@@ -92,7 +96,7 @@ func NewFailoverClient(failoverOpt *FailoverOptions) *Client {
 		},
 	}
 	c.baseClient.init()
-	c.setProcessor(c.Process)
+	c.cmdable.setProcessor(c.Process)
 
 	return &c
 }
@@ -116,7 +120,7 @@ func NewSentinelClient(opt *Options) *SentinelClient {
 }
 
 func (c *SentinelClient) PubSub() *PubSub {
-	return &PubSub{
+	pubsub := &PubSub{
 		opt: c.opt,
 
 		newConn: func(channels []string) (*pool.Conn, error) {
@@ -124,6 +128,8 @@ func (c *SentinelClient) PubSub() *PubSub {
 		},
 		closeConn: c.connPool.CloseConn,
 	}
+	pubsub.init()
+	return pubsub
 }
 
 func (c *SentinelClient) GetMasterAddrByName(name string) *StringSliceCmd {
@@ -180,10 +186,7 @@ func (d *sentinelFailover) MasterAddr() (string, error) {
 	if err != nil {
 		return "", err
 	}
-
+	d._switchMaster(addr)
-	if d._masterAddr != addr {
-		d.switchMaster(addr)
-	}
 
 	return addr, nil
 }
@@ -194,11 +197,11 @@ func (d *sentinelFailover) masterAddr() (string, error) {
 		addr, err := d.sentinel.GetMasterAddrByName(d.masterName).Result()
 		if err == nil {
 			addr := net.JoinHostPort(addr[0], addr[1])
-			internal.Logf("sentinel: master=%q addr=%q", d.masterName, addr)
 			return addr, nil
 		}
 
-		internal.Logf("sentinel: GetMasterAddrByName name=%q failed: %s", d.masterName, err)
+		internal.Logf("sentinel: GetMasterAddrByName name=%q failed: %s",
+			d.masterName, err)
 		d._resetSentinel()
 	}
 
@@ -234,15 +237,23 @@ func (d *sentinelFailover) masterAddr() (string, error) {
 	return "", errors.New("redis: all sentinels are unreachable")
 }
 
-func (d *sentinelFailover) switchMaster(masterAddr string) {
+func (c *sentinelFailover) switchMaster(addr string) {
-	internal.Logf(
+	c.mu.Lock()
-		"sentinel: new master=%q addr=%q",
+	c._switchMaster(addr)
-		d.masterName, masterAddr,
+	c.mu.Unlock()
-	)
+}
-	_ = d.Pool().Filter(func(cn *pool.Conn) bool {
+
-		return cn.RemoteAddr().String() != masterAddr
+func (c *sentinelFailover) _switchMaster(addr string) {
+	if c._masterAddr == addr {
+		return
+	}
+
+	internal.Logf("sentinel: new master=%q addr=%q",
+		c.masterName, addr)
+	_ = c.Pool().Filter(func(cn *pool.Conn) bool {
+		return cn.RemoteAddr().String() != addr
 	})
-	d._masterAddr = masterAddr
+	c._masterAddr = addr
 }
 
 func (d *sentinelFailover) setSentinel(sentinel *SentinelClient) {
@@ -292,27 +303,25 @@ func (d *sentinelFailover) discoverSentinels(sentinel *SentinelClient) {
 }
 
 func (d *sentinelFailover) listen(sentinel *SentinelClient) {
-	var pubsub *PubSub
+	pubsub := sentinel.PubSub()
-	for {
+	defer pubsub.Close()
-		if pubsub == nil {
-			pubsub = sentinel.PubSub()
 
-			if err := pubsub.Subscribe("+switch-master"); err != nil {
+	err := pubsub.Subscribe("+switch-master")
-				internal.Logf("sentinel: Subscribe failed: %s", err)
+	if err != nil {
-				pubsub.Close()
+		internal.Logf("sentinel: Subscribe failed: %s", err)
+		d.resetSentinel()
+		return
+	}
+
+	for {
+		msg, err := pubsub.ReceiveMessage()
+		if err != nil {
+			if err == pool.ErrClosed {
 				d.resetSentinel()
 				return
 			}
-		}
+			internal.Logf("sentinel: ReceiveMessage failed: %s", err)
-
+			continue
-		msg, err := pubsub.ReceiveMessage()
-		if err != nil {
-			if err != pool.ErrClosed {
-				internal.Logf("sentinel: ReceiveMessage failed: %s", err)
-				pubsub.Close()
-			}
-			d.resetSentinel()
-			return
 		}
 
 		switch msg.Channel {
@@ -323,12 +332,7 @@ func (d *sentinelFailover) listen(sentinel *SentinelClient) {
 				continue
 			}
 			addr := net.JoinHostPort(parts[3], parts[4])
-
+			d.switchMaster(addr)
-			d.mu.Lock()
-			if d._masterAddr != addr {
-				d.switchMaster(addr)
-			}
-			d.mu.Unlock()
 		}
 	}
 }

vendor/github.com/go-redis/redis/tx.go

@@ -29,6 +29,10 @@ func (c *Client) newTx() *Tx {
 	return &tx
 }
 
+// Watch prepares a transcaction and marks the keys to be watched
+// for conditional execution if there are any keys.
+//
+// The transaction is automatically closed when the fn exits.
 func (c *Client) Watch(fn func(*Tx) error, keys ...string) error {
 	tx := c.newTx()
 	if len(keys) > 0 {
@@ -74,6 +78,7 @@ func (c *Tx) Unwatch(keys ...string) *StatusCmd {
 	return cmd
 }
 
+// Pipeline creates a new pipeline. It is more convenient to use Pipelined.
 func (c *Tx) Pipeline() Pipeliner {
 	pipe := Pipeline{
 		exec: c.processTxPipeline,
@@ -82,23 +87,24 @@ func (c *Tx) Pipeline() Pipeliner {
 	return &pipe
 }
 
-// Pipelined executes commands queued in the fn in a transaction
+// Pipelined executes commands queued in the fn in a transaction.
-// and restores the connection state to normal.
 //
 // When using WATCH, EXEC will execute commands only if the watched keys
 // were not modified, allowing for a check-and-set mechanism.
 //
 // Exec always returns list of commands. If transaction fails
-// TxFailedErr is returned. Otherwise Exec returns error of the first
+// TxFailedErr is returned. Otherwise Exec returns an error of the first
 // failed command or nil.
 func (c *Tx) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 	return c.Pipeline().Pipelined(fn)
 }
 
+// TxPipelined is an alias for Pipelined.
 func (c *Tx) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 	return c.Pipelined(fn)
 }
 
+// TxPipeline is an alias for Pipeline.
 func (c *Tx) TxPipeline() Pipeliner {
 	return c.Pipeline()
 }

vendor/github.com/go-redis/redis/universal.go

@@ -12,35 +12,38 @@ type UniversalOptions struct {
 	// of cluster/sentinel nodes.
 	Addrs []string
 
-	// The sentinel master name.
-	// Only failover clients.
-	MasterName string
-
 	// Database to be selected after connecting to the server.
 	// Only single-node and failover clients.
 	DB int
 
-	// Only cluster clients.
+	// Common options.
-
-	// Enables read only queries on slave nodes.
-	ReadOnly bool
-
-	MaxRedirects   int
-	RouteByLatency bool
-
-	// Common options
 
 	OnConnect          func(*Conn) error
-	MaxRetries         int
 	Password           string
+	MaxRetries         int
+	MinRetryBackoff    time.Duration
+	MaxRetryBackoff    time.Duration
 	DialTimeout        time.Duration
 	ReadTimeout        time.Duration
 	WriteTimeout       time.Duration
 	PoolSize           int
+	MinIdleConns       int
+	MaxConnAge         time.Duration
 	PoolTimeout        time.Duration
 	IdleTimeout        time.Duration
 	IdleCheckFrequency time.Duration
 	TLSConfig          *tls.Config
+
+	// Only cluster clients.
+
+	MaxRedirects   int
+	ReadOnly       bool
+	RouteByLatency bool
+	RouteRandomly  bool
+
+	// The sentinel master name.
+	// Only failover clients.
+	MasterName string
 }
 
 func (o *UniversalOptions) cluster() *ClusterOptions {
@@ -49,22 +52,31 @@ func (o *UniversalOptions) cluster() *ClusterOptions {
 	}
 
 	return &ClusterOptions{
-		Addrs:          o.Addrs,
+		Addrs:     o.Addrs,
-		MaxRedirects:   o.MaxRedirects,
+		OnConnect: o.OnConnect,
-		RouteByLatency: o.RouteByLatency,
+
-		ReadOnly:       o.ReadOnly,
+		Password: o.Password,
+
+		MaxRedirects:   o.MaxRedirects,
+		ReadOnly:       o.ReadOnly,
+		RouteByLatency: o.RouteByLatency,
+		RouteRandomly:  o.RouteRandomly,
+
+		MaxRetries:      o.MaxRetries,
+		MinRetryBackoff: o.MinRetryBackoff,
+		MaxRetryBackoff: o.MaxRetryBackoff,
 
-		OnConnect:          o.OnConnect,
-		MaxRetries:         o.MaxRetries,
-		Password:           o.Password,
 		DialTimeout:        o.DialTimeout,
 		ReadTimeout:        o.ReadTimeout,
 		WriteTimeout:       o.WriteTimeout,
 		PoolSize:           o.PoolSize,
+		MinIdleConns:       o.MinIdleConns,
+		MaxConnAge:         o.MaxConnAge,
 		PoolTimeout:        o.PoolTimeout,
 		IdleTimeout:        o.IdleTimeout,
 		IdleCheckFrequency: o.IdleCheckFrequency,
-		TLSConfig:          o.TLSConfig,
+
+		TLSConfig: o.TLSConfig,
 	}
 }
 
@@ -76,19 +88,27 @@ func (o *UniversalOptions) failover() *FailoverOptions {
 	return &FailoverOptions{
 		SentinelAddrs: o.Addrs,
 		MasterName:    o.MasterName,
-		DB:            o.DB,
+		OnConnect:     o.OnConnect,
+
+		DB:       o.DB,
+		Password: o.Password,
+
+		MaxRetries:      o.MaxRetries,
+		MinRetryBackoff: o.MinRetryBackoff,
+		MaxRetryBackoff: o.MaxRetryBackoff,
+
+		DialTimeout:  o.DialTimeout,
+		ReadTimeout:  o.ReadTimeout,
+		WriteTimeout: o.WriteTimeout,
 
-		OnConnect:          o.OnConnect,
-		MaxRetries:         o.MaxRetries,
-		Password:           o.Password,
-		DialTimeout:        o.DialTimeout,
-		ReadTimeout:        o.ReadTimeout,
-		WriteTimeout:       o.WriteTimeout,
 		PoolSize:           o.PoolSize,
+		MinIdleConns:       o.MinIdleConns,
+		MaxConnAge:         o.MaxConnAge,
 		PoolTimeout:        o.PoolTimeout,
 		IdleTimeout:        o.IdleTimeout,
 		IdleCheckFrequency: o.IdleCheckFrequency,
-		TLSConfig:          o.TLSConfig,
+
+		TLSConfig: o.TLSConfig,
 	}
 }
 
@@ -99,20 +119,28 @@ func (o *UniversalOptions) simple() *Options {
 	}
 
 	return &Options{
-		Addr: addr,
+		Addr:      addr,
-		DB:   o.DB,
+		OnConnect: o.OnConnect,
+
+		DB:       o.DB,
+		Password: o.Password,
+
+		MaxRetries:      o.MaxRetries,
+		MinRetryBackoff: o.MinRetryBackoff,
+		MaxRetryBackoff: o.MaxRetryBackoff,
+
+		DialTimeout:  o.DialTimeout,
+		ReadTimeout:  o.ReadTimeout,
+		WriteTimeout: o.WriteTimeout,
 
-		OnConnect:          o.OnConnect,
-		MaxRetries:         o.MaxRetries,
-		Password:           o.Password,
-		DialTimeout:        o.DialTimeout,
-		ReadTimeout:        o.ReadTimeout,
-		WriteTimeout:       o.WriteTimeout,
 		PoolSize:           o.PoolSize,
+		MinIdleConns:       o.MinIdleConns,
+		MaxConnAge:         o.MaxConnAge,
 		PoolTimeout:        o.PoolTimeout,
 		IdleTimeout:        o.IdleTimeout,
 		IdleCheckFrequency: o.IdleCheckFrequency,
-		TLSConfig:          o.TLSConfig,
+
+		TLSConfig: o.TLSConfig,
 	}
 }
 

vendor/github.com/golang/protobuf/LICENSE

@@ -1,7 +1,4 @@
-Go support for Protocol Buffers - Google's data interchange format
-
 Copyright 2010 The Go Authors.  All rights reserved.
-https://github.com/golang/protobuf
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are

vendor/github.com/golang/protobuf/proto/encode.go

@@ -37,27 +37,9 @@ package proto
 
 import (
 	"errors"
-	"fmt"
 	"reflect"
 )
 
-// RequiredNotSetError is the error returned if Marshal is called with
-// a protocol buffer struct whose required fields have not
-// all been initialized. It is also the error returned if Unmarshal is
-// called with an encoded protocol buffer that does not include all the
-// required fields.
-//
-// When printed, RequiredNotSetError reports the first unset required field in a
-// message. If the field cannot be precisely determined, it is reported as
-// "{Unknown}".
-type RequiredNotSetError struct {
-	field string
-}
-
-func (e *RequiredNotSetError) Error() string {
-	return fmt.Sprintf("proto: required field %q not set", e.field)
-}
-
 var (
 	// errRepeatedHasNil is the error returned if Marshal is called with
 	// a struct with a repeated field containing a nil element.

vendor/github.com/golang/protobuf/proto/lib.go

@@ -265,7 +265,6 @@ package proto
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
 	"log"
 	"reflect"
@@ -274,7 +273,66 @@ import (
 	"sync"
 )
 
-var errInvalidUTF8 = errors.New("proto: invalid UTF-8 string")
+// RequiredNotSetError is an error type returned by either Marshal or Unmarshal.
+// Marshal reports this when a required field is not initialized.
+// Unmarshal reports this when a required field is missing from the wire data.
+type RequiredNotSetError struct{ field string }
+
+func (e *RequiredNotSetError) Error() string {
+	if e.field == "" {
+		return fmt.Sprintf("proto: required field not set")
+	}
+	return fmt.Sprintf("proto: required field %q not set", e.field)
+}
+func (e *RequiredNotSetError) RequiredNotSet() bool {
+	return true
+}
+
+type invalidUTF8Error struct{ field string }
+
+func (e *invalidUTF8Error) Error() string {
+	if e.field == "" {
+		return "proto: invalid UTF-8 detected"
+	}
+	return fmt.Sprintf("proto: field %q contains invalid UTF-8", e.field)
+}
+func (e *invalidUTF8Error) InvalidUTF8() bool {
+	return true
+}
+
+// errInvalidUTF8 is a sentinel error to identify fields with invalid UTF-8.
+// This error should not be exposed to the external API as such errors should
+// be recreated with the field information.
+var errInvalidUTF8 = &invalidUTF8Error{}
+
+// isNonFatal reports whether the error is either a RequiredNotSet error
+// or a InvalidUTF8 error.
+func isNonFatal(err error) bool {
+	if re, ok := err.(interface{ RequiredNotSet() bool }); ok && re.RequiredNotSet() {
+		return true
+	}
+	if re, ok := err.(interface{ InvalidUTF8() bool }); ok && re.InvalidUTF8() {
+		return true
+	}
+	return false
+}
+
+type nonFatal struct{ E error }
+
+// Merge merges err into nf and reports whether it was successful.
+// Otherwise it returns false for any fatal non-nil errors.
+func (nf *nonFatal) Merge(err error) (ok bool) {
+	if err == nil {
+		return true // not an error
+	}
+	if !isNonFatal(err) {
+		return false // fatal error
+	}
+	if nf.E == nil {
+		nf.E = err // store first instance of non-fatal error
+	}
+	return true
+}
 
 // Message is implemented by generated protocol buffer messages.
 type Message interface {

vendor/github.com/golang/protobuf/proto/properties.go

@@ -139,7 +139,7 @@ type Properties struct {
 	Repeated bool
 	Packed   bool   // relevant for repeated primitives only
 	Enum     string // set for enum types only
-	proto3   bool   // whether this is known to be a proto3 field; set for []byte only
+	proto3   bool   // whether this is known to be a proto3 field
 	oneof    bool   // whether this is a oneof field
 
 	Default    string // default value
@@ -148,9 +148,9 @@ type Properties struct {
 	stype reflect.Type      // set for struct types only
 	sprop *StructProperties // set for struct types only
 
-	mtype    reflect.Type // set for map types only
+	mtype      reflect.Type // set for map types only
-	mkeyprop *Properties  // set for map types only
+	MapKeyProp *Properties  // set for map types only
-	mvalprop *Properties  // set for map types only
+	MapValProp *Properties  // set for map types only
 }
 
 // String formats the properties in the protobuf struct field tag style.
@@ -275,16 +275,16 @@ func (p *Properties) setFieldProps(typ reflect.Type, f *reflect.StructField, loc
 
 	case reflect.Map:
 		p.mtype = t1
-		p.mkeyprop = &Properties{}
+		p.MapKeyProp = &Properties{}
-		p.mkeyprop.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
+		p.MapKeyProp.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
-		p.mvalprop = &Properties{}
+		p.MapValProp = &Properties{}
 		vtype := p.mtype.Elem()
 		if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice {
 			// The value type is not a message (*T) or bytes ([]byte),
 			// so we need encoders for the pointer to this type.
 			vtype = reflect.PtrTo(vtype)
 		}
-		p.mvalprop.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
+		p.MapValProp.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
 	}
 
 	if p.stype != nil {

vendor/github.com/golang/protobuf/proto/table_marshal.go

@@ -231,7 +231,7 @@ func (u *marshalInfo) marshal(b []byte, ptr pointer, deterministic bool) ([]byte
 		return b, err
 	}
 
-	var err, errreq error
+	var err, errLater error
 	// The old marshaler encodes extensions at beginning.
 	if u.extensions.IsValid() {
 		e := ptr.offset(u.extensions).toExtensions()
@@ -252,11 +252,13 @@ func (u *marshalInfo) marshal(b []byte, ptr pointer, deterministic bool) ([]byte
 		}
 	}
 	for _, f := range u.fields {
-		if f.required && errreq == nil {
+		if f.required {
 			if ptr.offset(f.field).getPointer().isNil() {
 				// Required field is not set.
 				// We record the error but keep going, to give a complete marshaling.
-				errreq = &RequiredNotSetError{f.name}
+				if errLater == nil {
+					errLater = &RequiredNotSetError{f.name}
+				}
 				continue
 			}
 		}
@@ -269,14 +271,21 @@ func (u *marshalInfo) marshal(b []byte, ptr pointer, deterministic bool) ([]byte
 			if err1, ok := err.(*RequiredNotSetError); ok {
 				// Required field in submessage is not set.
 				// We record the error but keep going, to give a complete marshaling.
-				if errreq == nil {
+				if errLater == nil {
-					errreq = &RequiredNotSetError{f.name + "." + err1.field}
+					errLater = &RequiredNotSetError{f.name + "." + err1.field}
 				}
 				continue
 			}
 			if err == errRepeatedHasNil {
 				err = errors.New("proto: repeated field " + f.name + " has nil element")
 			}
+			if err == errInvalidUTF8 {
+				if errLater == nil {
+					fullName := revProtoTypes[reflect.PtrTo(u.typ)] + "." + f.name
+					errLater = &invalidUTF8Error{fullName}
+				}
+				continue
+			}
 			return b, err
 		}
 	}
@@ -284,7 +293,7 @@ func (u *marshalInfo) marshal(b []byte, ptr pointer, deterministic bool) ([]byte
 		s := *ptr.offset(u.unrecognized).toBytes()
 		b = append(b, s...)
 	}
-	return b, errreq
+	return b, errLater
 }
 
 // computeMarshalInfo initializes the marshal info.
@@ -530,6 +539,7 @@ func typeMarshaler(t reflect.Type, tags []string, nozero, oneof bool) (sizer, ma
 
 	packed := false
 	proto3 := false
+	validateUTF8 := true
 	for i := 2; i < len(tags); i++ {
 		if tags[i] == "packed" {
 			packed = true
@@ -538,6 +548,7 @@ func typeMarshaler(t reflect.Type, tags []string, nozero, oneof bool) (sizer, ma
 			proto3 = true
 		}
 	}
+	validateUTF8 = validateUTF8 && proto3
 
 	switch t.Kind() {
 	case reflect.Bool:
@@ -735,6 +746,18 @@ func typeMarshaler(t reflect.Type, tags []string, nozero, oneof bool) (sizer, ma
 		}
 		return sizeFloat64Value, appendFloat64Value
 	case reflect.String:
+		if validateUTF8 {
+			if pointer {
+				return sizeStringPtr, appendUTF8StringPtr
+			}
+			if slice {
+				return sizeStringSlice, appendUTF8StringSlice
+			}
+			if nozero {
+				return sizeStringValueNoZero, appendUTF8StringValueNoZero
+			}
+			return sizeStringValue, appendUTF8StringValue
+		}
 		if pointer {
 			return sizeStringPtr, appendStringPtr
 		}
@@ -1984,9 +2007,6 @@ func appendBoolPackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byt
 }
 func appendStringValue(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
 	v := *ptr.toString()
-	if !utf8.ValidString(v) {
-		return nil, errInvalidUTF8
-	}
 	b = appendVarint(b, wiretag)
 	b = appendVarint(b, uint64(len(v)))
 	b = append(b, v...)
@@ -1997,9 +2017,6 @@ func appendStringValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]b
 	if v == "" {
 		return b, nil
 	}
-	if !utf8.ValidString(v) {
-		return nil, errInvalidUTF8
-	}
 	b = appendVarint(b, wiretag)
 	b = appendVarint(b, uint64(len(v)))
 	b = append(b, v...)
@@ -2011,24 +2028,83 @@ func appendStringPtr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, err
 		return b, nil
 	}
 	v := *p
-	if !utf8.ValidString(v) {
-		return nil, errInvalidUTF8
-	}
 	b = appendVarint(b, wiretag)
 	b = appendVarint(b, uint64(len(v)))
 	b = append(b, v...)
 	return b, nil
 }
 func appendStringSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
+	s := *ptr.toStringSlice()
+	for _, v := range s {
+		b = appendVarint(b, wiretag)
+		b = appendVarint(b, uint64(len(v)))
+		b = append(b, v...)
+	}
+	return b, nil
+}
+func appendUTF8StringValue(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
+	var invalidUTF8 bool
+	v := *ptr.toString()
+	if !utf8.ValidString(v) {
+		invalidUTF8 = true
+	}
+	b = appendVarint(b, wiretag)
+	b = appendVarint(b, uint64(len(v)))
+	b = append(b, v...)
+	if invalidUTF8 {
+		return b, errInvalidUTF8
+	}
+	return b, nil
+}
+func appendUTF8StringValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
+	var invalidUTF8 bool
+	v := *ptr.toString()
+	if v == "" {
+		return b, nil
+	}
+	if !utf8.ValidString(v) {
+		invalidUTF8 = true
+	}
+	b = appendVarint(b, wiretag)
+	b = appendVarint(b, uint64(len(v)))
+	b = append(b, v...)
+	if invalidUTF8 {
+		return b, errInvalidUTF8
+	}
+	return b, nil
+}
+func appendUTF8StringPtr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
+	var invalidUTF8 bool
+	p := *ptr.toStringPtr()
+	if p == nil {
+		return b, nil
+	}
+	v := *p
+	if !utf8.ValidString(v) {
+		invalidUTF8 = true
+	}
+	b = appendVarint(b, wiretag)
+	b = appendVarint(b, uint64(len(v)))
+	b = append(b, v...)
+	if invalidUTF8 {
+		return b, errInvalidUTF8
+	}
+	return b, nil
+}
+func appendUTF8StringSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
+	var invalidUTF8 bool
 	s := *ptr.toStringSlice()
 	for _, v := range s {
 		if !utf8.ValidString(v) {
-			return nil, errInvalidUTF8
+			invalidUTF8 = true
 		}
 		b = appendVarint(b, wiretag)
 		b = appendVarint(b, uint64(len(v)))
 		b = append(b, v...)
 	}
+	if invalidUTF8 {
+		return b, errInvalidUTF8
+	}
 	return b, nil
 }
 func appendBytes(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
@@ -2107,7 +2183,8 @@ func makeGroupSliceMarshaler(u *marshalInfo) (sizer, marshaler) {
 		},
 		func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) {
 			s := ptr.getPointerSlice()
-			var err, errreq error
+			var err error
+			var nerr nonFatal
 			for _, v := range s {
 				if v.isNil() {
 					return b, errRepeatedHasNil
@@ -2115,22 +2192,14 @@ func makeGroupSliceMarshaler(u *marshalInfo) (sizer, marshaler) {
 				b = appendVarint(b, wiretag) // start group
 				b, err = u.marshal(b, v, deterministic)
 				b = appendVarint(b, wiretag+(WireEndGroup-WireStartGroup)) // end group
-				if err != nil {
+				if !nerr.Merge(err) {
-					if _, ok := err.(*RequiredNotSetError); ok {
-						// Required field in submessage is not set.
-						// We record the error but keep going, to give a complete marshaling.
-						if errreq == nil {
-							errreq = err
-						}
-						continue
-					}
 					if err == ErrNil {
 						err = errRepeatedHasNil
 					}
 					return b, err
 				}
 			}
-			return b, errreq
+			return b, nerr.E
 		}
 }
 
@@ -2174,7 +2243,8 @@ func makeMessageSliceMarshaler(u *marshalInfo) (sizer, marshaler) {
 		},
 		func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) {
 			s := ptr.getPointerSlice()
-			var err, errreq error
+			var err error
+			var nerr nonFatal
 			for _, v := range s {
 				if v.isNil() {
 					return b, errRepeatedHasNil
@@ -2184,22 +2254,14 @@ func makeMessageSliceMarshaler(u *marshalInfo) (sizer, marshaler) {
 				b = appendVarint(b, uint64(siz))
 				b, err = u.marshal(b, v, deterministic)
 
-				if err != nil {
+				if !nerr.Merge(err) {
-					if _, ok := err.(*RequiredNotSetError); ok {
-						// Required field in submessage is not set.
-						// We record the error but keep going, to give a complete marshaling.
-						if errreq == nil {
-							errreq = err
-						}
-						continue
-					}
 					if err == ErrNil {
 						err = errRepeatedHasNil
 					}
 					return b, err
 				}
 			}
-			return b, errreq
+			return b, nerr.E
 		}
 }
 
@@ -2223,6 +2285,25 @@ func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
 	// value.
 	// Key cannot be pointer-typed.
 	valIsPtr := valType.Kind() == reflect.Ptr
+
+	// If value is a message with nested maps, calling
+	// valSizer in marshal may be quadratic. We should use
+	// cached version in marshal (but not in size).
+	// If value is not message type, we don't have size cache,
+	// but it cannot be nested either. Just use valSizer.
+	valCachedSizer := valSizer
+	if valIsPtr && valType.Elem().Kind() == reflect.Struct {
+		u := getMarshalInfo(valType.Elem())
+		valCachedSizer = func(ptr pointer, tagsize int) int {
+			// Same as message sizer, but use cache.
+			p := ptr.getPointer()
+			if p.isNil() {
+				return 0
+			}
+			siz := u.cachedsize(p)
+			return siz + SizeVarint(uint64(siz)) + tagsize
+		}
+	}
 	return func(ptr pointer, tagsize int) int {
 			m := ptr.asPointerTo(t).Elem() // the map
 			n := 0
@@ -2243,24 +2324,26 @@ func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
 			if len(keys) > 1 && deterministic {
 				sort.Sort(mapKeys(keys))
 			}
+
+			var nerr nonFatal
 			for _, k := range keys {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
 				kaddr := toAddrPointer(&ki, false)    // pointer to key
 				vaddr := toAddrPointer(&vi, valIsPtr) // pointer to value
 				b = appendVarint(b, tag)
-				siz := keySizer(kaddr, 1) + valSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
+				siz := keySizer(kaddr, 1) + valCachedSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				b = appendVarint(b, uint64(siz))
 				b, err = keyMarshaler(b, kaddr, keyWireTag, deterministic)
-				if err != nil {
+				if !nerr.Merge(err) {
 					return b, err
 				}
 				b, err = valMarshaler(b, vaddr, valWireTag, deterministic)
-				if err != nil && err != ErrNil { // allow nil value in map
+				if err != ErrNil && !nerr.Merge(err) { // allow nil value in map
 					return b, err
 				}
 			}
-			return b, nil
+			return b, nerr.E
 		}
 }
 
@@ -2333,6 +2416,7 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 	defer mu.Unlock()
 
 	var err error
+	var nerr nonFatal
 
 	// Fast-path for common cases: zero or one extensions.
 	// Don't bother sorting the keys.
@@ -2352,11 +2436,11 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 			v := e.value
 			p := toAddrPointer(&v, ei.isptr)
 			b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
-			if err != nil {
+			if !nerr.Merge(err) {
 				return b, err
 			}
 		}
-		return b, nil
+		return b, nerr.E
 	}
 
 	// Sort the keys to provide a deterministic encoding.
@@ -2383,11 +2467,11 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 		v := e.value
 		p := toAddrPointer(&v, ei.isptr)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
-		if err != nil {
+		if !nerr.Merge(err) {
 			return b, err
 		}
 	}
-	return b, nil
+	return b, nerr.E
 }
 
 // message set format is:
@@ -2444,6 +2528,7 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 	defer mu.Unlock()
 
 	var err error
+	var nerr nonFatal
 
 	// Fast-path for common cases: zero or one extensions.
 	// Don't bother sorting the keys.
@@ -2470,12 +2555,12 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 			v := e.value
 			p := toAddrPointer(&v, ei.isptr)
 			b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
-			if err != nil {
+			if !nerr.Merge(err) {
 				return b, err
 			}
 			b = append(b, 1<<3|WireEndGroup)
 		}
-		return b, nil
+		return b, nerr.E
 	}
 
 	// Sort the keys to provide a deterministic encoding.
@@ -2509,11 +2594,11 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 		p := toAddrPointer(&v, ei.isptr)
 		b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 		b = append(b, 1<<3|WireEndGroup)
-		if err != nil {
+		if !nerr.Merge(err) {
 			return b, err
 		}
 	}
-	return b, nil
+	return b, nerr.E
 }
 
 // sizeV1Extensions computes the size of encoded data for a V1-API extension field.
@@ -2556,6 +2641,7 @@ func (u *marshalInfo) appendV1Extensions(b []byte, m map[int32]Extension, determ
 	sort.Ints(keys)
 
 	var err error
+	var nerr nonFatal
 	for _, k := range keys {
 		e := m[int32(k)]
 		if e.value == nil || e.desc == nil {
@@ -2572,11 +2658,11 @@ func (u *marshalInfo) appendV1Extensions(b []byte, m map[int32]Extension, determ
 		v := e.value
 		p := toAddrPointer(&v, ei.isptr)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
-		if err != nil {
+		if !nerr.Merge(err) {
 			return b, err
 		}
 	}
-	return b, nil
+	return b, nerr.E
 }
 
 // newMarshaler is the interface representing objects that can marshal themselves.

vendor/github.com/golang/protobuf/proto/table_unmarshal.go

@@ -97,6 +97,8 @@ type unmarshalFieldInfo struct {
 
 	// if a required field, contains a single set bit at this field's index in the required field list.
 	reqMask uint64
+
+	name string // name of the field, for error reporting
 }
 
 var (
@@ -136,8 +138,8 @@ func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error {
 	if u.isMessageSet {
 		return UnmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
 	}
-	var reqMask uint64            // bitmask of required fields we've seen.
+	var reqMask uint64 // bitmask of required fields we've seen.
-	var rnse *RequiredNotSetError // an instance of a RequiredNotSetError returned by a submessage.
+	var errLater error
 	for len(b) > 0 {
 		// Read tag and wire type.
 		// Special case 1 and 2 byte varints.
@@ -176,11 +178,20 @@ func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error {
 			if r, ok := err.(*RequiredNotSetError); ok {
 				// Remember this error, but keep parsing. We need to produce
 				// a full parse even if a required field is missing.
-				rnse = r
+				if errLater == nil {
+					errLater = r
+				}
 				reqMask |= f.reqMask
 				continue
 			}
 			if err != errInternalBadWireType {
+				if err == errInvalidUTF8 {
+					if errLater == nil {
+						fullName := revProtoTypes[reflect.PtrTo(u.typ)] + "." + f.name
+						errLater = &invalidUTF8Error{fullName}
+					}
+					continue
+				}
 				return err
 			}
 			// Fragments with bad wire type are treated as unknown fields.
@@ -239,20 +250,16 @@ func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error {
 			emap[int32(tag)] = e
 		}
 	}
-	if rnse != nil {
+	if reqMask != u.reqMask && errLater == nil {
-		// A required field of a submessage/group is missing. Return that error.
-		return rnse
-	}
-	if reqMask != u.reqMask {
 		// A required field of this message is missing.
 		for _, n := range u.reqFields {
 			if reqMask&1 == 0 {
-				return &RequiredNotSetError{n}
+				errLater = &RequiredNotSetError{n}
 			}
 			reqMask >>= 1
 		}
 	}
-	return nil
+	return errLater
 }
 
 // computeUnmarshalInfo fills in u with information for use
@@ -351,7 +358,7 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 		}
 
 		// Store the info in the correct slot in the message.
-		u.setTag(tag, toField(&f), unmarshal, reqMask)
+		u.setTag(tag, toField(&f), unmarshal, reqMask, name)
 	}
 
 	// Find any types associated with oneof fields.
@@ -366,10 +373,17 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 
 			f := typ.Field(0) // oneof implementers have one field
 			baseUnmarshal := fieldUnmarshaler(&f)
-			tagstr := strings.Split(f.Tag.Get("protobuf"), ",")[1]
+			tags := strings.Split(f.Tag.Get("protobuf"), ",")
-			tag, err := strconv.Atoi(tagstr)
+			fieldNum, err := strconv.Atoi(tags[1])
 			if err != nil {
-				panic("protobuf tag field not an integer: " + tagstr)
+				panic("protobuf tag field not an integer: " + tags[1])
+			}
+			var name string
+			for _, tag := range tags {
+				if strings.HasPrefix(tag, "name=") {
+					name = strings.TrimPrefix(tag, "name=")
+					break
+				}
 			}
 
 			// Find the oneof field that this struct implements.
@@ -380,7 +394,7 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 					// That lets us know where this struct should be stored
 					// when we encounter it during unmarshaling.
 					unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
-					u.setTag(tag, of.field, unmarshal, 0)
+					u.setTag(fieldNum, of.field, unmarshal, 0, name)
 				}
 			}
 		}
@@ -401,7 +415,7 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 	// [0 0] is [tag=0/wiretype=varint varint-encoded-0].
 	u.setTag(0, zeroField, func(b []byte, f pointer, w int) ([]byte, error) {
 		return nil, fmt.Errorf("proto: %s: illegal tag 0 (wire type %d)", t, w)
-	}, 0)
+	}, 0, "")
 
 	// Set mask for required field check.
 	u.reqMask = uint64(1)<<uint(len(u.reqFields)) - 1
@@ -413,8 +427,9 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 // tag = tag # for field
 // field/unmarshal = unmarshal info for that field.
 // reqMask = if required, bitmask for field position in required field list. 0 otherwise.
-func (u *unmarshalInfo) setTag(tag int, field field, unmarshal unmarshaler, reqMask uint64) {
+// name = short name of the field.
-	i := unmarshalFieldInfo{field: field, unmarshal: unmarshal, reqMask: reqMask}
+func (u *unmarshalInfo) setTag(tag int, field field, unmarshal unmarshaler, reqMask uint64, name string) {
+	i := unmarshalFieldInfo{field: field, unmarshal: unmarshal, reqMask: reqMask, name: name}
 	n := u.typ.NumField()
 	if tag >= 0 && (tag < 16 || tag < 2*n) { // TODO: what are the right numbers here?
 		for len(u.dense) <= tag {
@@ -442,11 +457,17 @@ func typeUnmarshaler(t reflect.Type, tags string) unmarshaler {
 	tagArray := strings.Split(tags, ",")
 	encoding := tagArray[0]
 	name := "unknown"
+	proto3 := false
+	validateUTF8 := true
 	for _, tag := range tagArray[3:] {
 		if strings.HasPrefix(tag, "name=") {
 			name = tag[5:]
 		}
+		if tag == "proto3" {
+			proto3 = true
+		}
 	}
+	validateUTF8 = validateUTF8 && proto3
 
 	// Figure out packaging (pointer, slice, or both)
 	slice := false
@@ -594,6 +615,15 @@ func typeUnmarshaler(t reflect.Type, tags string) unmarshaler {
 		}
 		return unmarshalBytesValue
 	case reflect.String:
+		if validateUTF8 {
+			if pointer {
+				return unmarshalUTF8StringPtr
+			}
+			if slice {
+				return unmarshalUTF8StringSlice
+			}
+			return unmarshalUTF8StringValue
+		}
 		if pointer {
 			return unmarshalStringPtr
 		}
@@ -1448,9 +1478,6 @@ func unmarshalStringValue(b []byte, f pointer, w int) ([]byte, error) {
 		return nil, io.ErrUnexpectedEOF
 	}
 	v := string(b[:x])
-	if !utf8.ValidString(v) {
-		return nil, errInvalidUTF8
-	}
 	*f.toString() = v
 	return b[x:], nil
 }
@@ -1468,9 +1495,6 @@ func unmarshalStringPtr(b []byte, f pointer, w int) ([]byte, error) {
 		return nil, io.ErrUnexpectedEOF
 	}
 	v := string(b[:x])
-	if !utf8.ValidString(v) {
-		return nil, errInvalidUTF8
-	}
 	*f.toStringPtr() = &v
 	return b[x:], nil
 }
@@ -1488,14 +1512,72 @@ func unmarshalStringSlice(b []byte, f pointer, w int) ([]byte, error) {
 		return nil, io.ErrUnexpectedEOF
 	}
 	v := string(b[:x])
-	if !utf8.ValidString(v) {
-		return nil, errInvalidUTF8
-	}
 	s := f.toStringSlice()
 	*s = append(*s, v)
 	return b[x:], nil
 }
 
+func unmarshalUTF8StringValue(b []byte, f pointer, w int) ([]byte, error) {
+	if w != WireBytes {
+		return b, errInternalBadWireType
+	}
+	x, n := decodeVarint(b)
+	if n == 0 {
+		return nil, io.ErrUnexpectedEOF
+	}
+	b = b[n:]
+	if x > uint64(len(b)) {
+		return nil, io.ErrUnexpectedEOF
+	}
+	v := string(b[:x])
+	*f.toString() = v
+	if !utf8.ValidString(v) {
+		return b[x:], errInvalidUTF8
+	}
+	return b[x:], nil
+}
+
+func unmarshalUTF8StringPtr(b []byte, f pointer, w int) ([]byte, error) {
+	if w != WireBytes {
+		return b, errInternalBadWireType
+	}
+	x, n := decodeVarint(b)
+	if n == 0 {
+		return nil, io.ErrUnexpectedEOF
+	}
+	b = b[n:]
+	if x > uint64(len(b)) {
+		return nil, io.ErrUnexpectedEOF
+	}
+	v := string(b[:x])
+	*f.toStringPtr() = &v
+	if !utf8.ValidString(v) {
+		return b[x:], errInvalidUTF8
+	}
+	return b[x:], nil
+}
+
+func unmarshalUTF8StringSlice(b []byte, f pointer, w int) ([]byte, error) {
+	if w != WireBytes {
+		return b, errInternalBadWireType
+	}
+	x, n := decodeVarint(b)
+	if n == 0 {
+		return nil, io.ErrUnexpectedEOF
+	}
+	b = b[n:]
+	if x > uint64(len(b)) {
+		return nil, io.ErrUnexpectedEOF
+	}
+	v := string(b[:x])
+	s := f.toStringSlice()
+	*s = append(*s, v)
+	if !utf8.ValidString(v) {
+		return b[x:], errInvalidUTF8
+	}
+	return b[x:], nil
+}
+
 var emptyBuf [0]byte
 
 func unmarshalBytesValue(b []byte, f pointer, w int) ([]byte, error) {
@@ -1674,6 +1756,7 @@ func makeUnmarshalMap(f *reflect.StructField) unmarshaler {
 		// Maps will be somewhat slow. Oh well.
 
 		// Read key and value from data.
+		var nerr nonFatal
 		k := reflect.New(kt)
 		v := reflect.New(vt)
 		for len(b) > 0 {
@@ -1694,7 +1777,7 @@ func makeUnmarshalMap(f *reflect.StructField) unmarshaler {
 				err = errInternalBadWireType // skip unknown tag
 			}
 
-			if err == nil {
+			if nerr.Merge(err) {
 				continue
 			}
 			if err != errInternalBadWireType {
@@ -1717,7 +1800,7 @@ func makeUnmarshalMap(f *reflect.StructField) unmarshaler {
 		// Insert into map.
 		m.SetMapIndex(k.Elem(), v.Elem())
 
-		return r, nil
+		return r, nerr.E
 	}
 }
 
@@ -1743,15 +1826,16 @@ func makeUnmarshalOneof(typ, ityp reflect.Type, unmarshal unmarshaler) unmarshal
 		// Unmarshal data into holder.
 		// We unmarshal into the first field of the holder object.
 		var err error
+		var nerr nonFatal
 		b, err = unmarshal(b, valToPointer(v).offset(field0), w)
-		if err != nil {
+		if !nerr.Merge(err) {
 			return nil, err
 		}
 
 		// Write pointer to holder into target field.
 		f.asPointerTo(ityp).Elem().Set(v)
 
-		return b, nil
+		return b, nerr.E
 	}
 }
 

vendor/github.com/golang/protobuf/proto/text.go

@@ -353,7 +353,7 @@ func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
 						return err
 					}
 				}
-				if err := tm.writeAny(w, key, props.mkeyprop); err != nil {
+				if err := tm.writeAny(w, key, props.MapKeyProp); err != nil {
 					return err
 				}
 				if err := w.WriteByte('\n'); err != nil {
@@ -370,7 +370,7 @@ func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
 							return err
 						}
 					}
-					if err := tm.writeAny(w, val, props.mvalprop); err != nil {
+					if err := tm.writeAny(w, val, props.MapValProp); err != nil {
 						return err
 					}
 					if err := w.WriteByte('\n'); err != nil {

vendor/github.com/golang/protobuf/proto/text_parser.go

@@ -630,17 +630,17 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 					if err := p.consumeToken(":"); err != nil {
 						return err
 					}
-					if err := p.readAny(key, props.mkeyprop); err != nil {
+					if err := p.readAny(key, props.MapKeyProp); err != nil {
 						return err
 					}
 					if err := p.consumeOptionalSeparator(); err != nil {
 						return err
 					}
 				case "value":
-					if err := p.checkForColon(props.mvalprop, dst.Type().Elem()); err != nil {
+					if err := p.checkForColon(props.MapValProp, dst.Type().Elem()); err != nil {
 						return err
 					}
-					if err := p.readAny(val, props.mvalprop); err != nil {
+					if err := p.readAny(val, props.MapValProp); err != nil {
 						return err
 					}
 					if err := p.consumeOptionalSeparator(); err != nil {

vendor/github.com/golang/protobuf/ptypes/any.go

@@ -130,10 +130,12 @@ func UnmarshalAny(any *any.Any, pb proto.Message) error {
 
 // Is returns true if any value contains a given message type.
 func Is(any *any.Any, pb proto.Message) bool {
-	aname, err := AnyMessageName(any)
+	// The following is equivalent to AnyMessageName(any) == proto.MessageName(pb),
-	if err != nil {
+	// but it avoids scanning TypeUrl for the slash.
+	if any == nil {
 		return false
 	}
-
+	name := proto.MessageName(pb)
-	return aname == proto.MessageName(pb)
+	prefix := len(any.TypeUrl) - len(name)
+	return prefix >= 1 && any.TypeUrl[prefix-1] == '/' && any.TypeUrl[prefix:] == name
 }

vendor/github.com/golang/protobuf/ptypes/any/any.pb.go

@@ -121,7 +121,7 @@ type Any struct {
 	// Schemes other than `http`, `https` (or the empty scheme) might be
 	// used with implementation specific semantics.
 	//
-	TypeUrl string `protobuf:"bytes,1,opt,name=type_url,json=typeUrl" json:"type_url,omitempty"`
+	TypeUrl string `protobuf:"bytes,1,opt,name=type_url,json=typeUrl,proto3" json:"type_url,omitempty"`
 	// Must be a valid serialized protocol buffer of the above specified type.
 	Value                []byte   `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`

vendor/github.com/golang/protobuf/ptypes/duration/duration.pb.go

@@ -82,14 +82,14 @@ type Duration struct {
 	// Signed seconds of the span of time. Must be from -315,576,000,000
 	// to +315,576,000,000 inclusive. Note: these bounds are computed from:
 	// 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years
-	Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"`
+	Seconds int64 `protobuf:"varint,1,opt,name=seconds,proto3" json:"seconds,omitempty"`
 	// Signed fractions of a second at nanosecond resolution of the span
 	// of time. Durations less than one second are represented with a 0
 	// `seconds` field and a positive or negative `nanos` field. For durations
 	// of one second or more, a non-zero value for the `nanos` field must be
 	// of the same sign as the `seconds` field. Must be from -999,999,999
 	// to +999,999,999 inclusive.
-	Nanos                int32    `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"`
+	Nanos                int32    `protobuf:"varint,2,opt,name=nanos,proto3" json:"nanos,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`

vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.pb.go

@@ -100,12 +100,12 @@ type Timestamp struct {
 	// Represents seconds of UTC time since Unix epoch
 	// 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
 	// 9999-12-31T23:59:59Z inclusive.
-	Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"`
+	Seconds int64 `protobuf:"varint,1,opt,name=seconds,proto3" json:"seconds,omitempty"`
 	// Non-negative fractions of a second at nanosecond resolution. Negative
 	// second values with fractions must still have non-negative nanos values
 	// that count forward in time. Must be from 0 to 999,999,999
 	// inclusive.
-	Nanos                int32    `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"`
+	Nanos                int32    `protobuf:"varint,2,opt,name=nanos,proto3" json:"nanos,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`

vendor/github.com/gorilla/handlers/cors.go

@@ -48,7 +48,10 @@ const (
 func (ch *cors) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	origin := r.Header.Get(corsOriginHeader)
 	if !ch.isOriginAllowed(origin) {
-		ch.h.ServeHTTP(w, r)
+		if r.Method != corsOptionMethod || ch.ignoreOptions {
+			ch.h.ServeHTTP(w, r)
+		}
+
 		return
 	}
 
@@ -111,13 +114,17 @@ func (ch *cors) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	returnOrigin := origin
-	for _, o := range ch.allowedOrigins {
+	if ch.allowedOriginValidator == nil && len(ch.allowedOrigins) == 0 {
-		// A configuration of * is different than explicitly setting an allowed
+		returnOrigin = "*"
-		// origin. Returning arbitrary origin headers an an access control allow
+	} else {
-		// origin header is unsafe and is not required by any use case.
+		for _, o := range ch.allowedOrigins {
-		if o == corsOriginMatchAll {
+			// A configuration of * is different than explicitly setting an allowed
-			returnOrigin = "*"
+			// origin. Returning arbitrary origin headers in an access control allow
-			break
+			// origin header is unsafe and is not required by any use case.
+			if o == corsOriginMatchAll {
+				returnOrigin = "*"
+				break
+			}
 		}
 	}
 	w.Header().Set(corsAllowOriginHeader, returnOrigin)
@@ -159,7 +166,7 @@ func parseCORSOptions(opts ...CORSOption) *cors {
 	ch := &cors{
 		allowedMethods: defaultCorsMethods,
 		allowedHeaders: defaultCorsHeaders,
-		allowedOrigins: []string{corsOriginMatchAll},
+		allowedOrigins: []string{},
 	}
 
 	for _, option := range opts {
@@ -307,6 +314,10 @@ func (ch *cors) isOriginAllowed(origin string) bool {
 		return ch.allowedOriginValidator(origin)
 	}
 
+	if len(ch.allowedOrigins) == 0 {
+		return true
+	}
+
 	for _, allowedOrigin := range ch.allowedOrigins {
 		if allowedOrigin == origin || allowedOrigin == corsOriginMatchAll {
 			return true

vendor/github.com/gorilla/handlers/handlers.go

@@ -7,15 +7,10 @@ package handlers
 import (
 	"bufio"
 	"fmt"
-	"io"
 	"net"
 	"net/http"
-	"net/url"
 	"sort"
-	"strconv"
 	"strings"
-	"time"
-	"unicode/utf8"
 )
 
 // MethodHandler is an http.Handler that dispatches to a handler whose key in the
@@ -48,59 +43,6 @@ func (h MethodHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	}
 }
 
-// loggingHandler is the http.Handler implementation for LoggingHandlerTo and its
-// friends
-type loggingHandler struct {
-	writer  io.Writer
-	handler http.Handler
-}
-
-// combinedLoggingHandler is the http.Handler implementation for LoggingHandlerTo
-// and its friends
-type combinedLoggingHandler struct {
-	writer  io.Writer
-	handler http.Handler
-}
-
-func (h loggingHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
-	t := time.Now()
-	logger := makeLogger(w)
-	url := *req.URL
-	h.handler.ServeHTTP(logger, req)
-	writeLog(h.writer, req, url, t, logger.Status(), logger.Size())
-}
-
-func (h combinedLoggingHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
-	t := time.Now()
-	logger := makeLogger(w)
-	url := *req.URL
-	h.handler.ServeHTTP(logger, req)
-	writeCombinedLog(h.writer, req, url, t, logger.Status(), logger.Size())
-}
-
-func makeLogger(w http.ResponseWriter) loggingResponseWriter {
-	var logger loggingResponseWriter = &responseLogger{w: w, status: http.StatusOK}
-	if _, ok := w.(http.Hijacker); ok {
-		logger = &hijackLogger{responseLogger{w: w, status: http.StatusOK}}
-	}
-	h, ok1 := logger.(http.Hijacker)
-	c, ok2 := w.(http.CloseNotifier)
-	if ok1 && ok2 {
-		return hijackCloseNotifier{logger, h, c}
-	}
-	if ok2 {
-		return &closeNotifyWriter{logger, c}
-	}
-	return logger
-}
-
-type commonLoggingResponseWriter interface {
-	http.ResponseWriter
-	http.Flusher
-	Status() int
-	Size() int
-}
-
 // responseLogger is wrapper of http.ResponseWriter that keeps track of its HTTP
 // status code and body size
 type responseLogger struct {
@@ -165,173 +107,6 @@ type hijackCloseNotifier struct {
 	http.CloseNotifier
 }
 
-const lowerhex = "0123456789abcdef"
-
-func appendQuoted(buf []byte, s string) []byte {
-	var runeTmp [utf8.UTFMax]byte
-	for width := 0; len(s) > 0; s = s[width:] {
-		r := rune(s[0])
-		width = 1
-		if r >= utf8.RuneSelf {
-			r, width = utf8.DecodeRuneInString(s)
-		}
-		if width == 1 && r == utf8.RuneError {
-			buf = append(buf, `\x`...)
-			buf = append(buf, lowerhex[s[0]>>4])
-			buf = append(buf, lowerhex[s[0]&0xF])
-			continue
-		}
-		if r == rune('"') || r == '\\' { // always backslashed
-			buf = append(buf, '\\')
-			buf = append(buf, byte(r))
-			continue
-		}
-		if strconv.IsPrint(r) {
-			n := utf8.EncodeRune(runeTmp[:], r)
-			buf = append(buf, runeTmp[:n]...)
-			continue
-		}
-		switch r {
-		case '\a':
-			buf = append(buf, `\a`...)
-		case '\b':
-			buf = append(buf, `\b`...)
-		case '\f':
-			buf = append(buf, `\f`...)
-		case '\n':
-			buf = append(buf, `\n`...)
-		case '\r':
-			buf = append(buf, `\r`...)
-		case '\t':
-			buf = append(buf, `\t`...)
-		case '\v':
-			buf = append(buf, `\v`...)
-		default:
-			switch {
-			case r < ' ':
-				buf = append(buf, `\x`...)
-				buf = append(buf, lowerhex[s[0]>>4])
-				buf = append(buf, lowerhex[s[0]&0xF])
-			case r > utf8.MaxRune:
-				r = 0xFFFD
-				fallthrough
-			case r < 0x10000:
-				buf = append(buf, `\u`...)
-				for s := 12; s >= 0; s -= 4 {
-					buf = append(buf, lowerhex[r>>uint(s)&0xF])
-				}
-			default:
-				buf = append(buf, `\U`...)
-				for s := 28; s >= 0; s -= 4 {
-					buf = append(buf, lowerhex[r>>uint(s)&0xF])
-				}
-			}
-		}
-	}
-	return buf
-
-}
-
-// buildCommonLogLine builds a log entry for req in Apache Common Log Format.
-// ts is the timestamp with which the entry should be logged.
-// status and size are used to provide the response HTTP status and size.
-func buildCommonLogLine(req *http.Request, url url.URL, ts time.Time, status int, size int) []byte {
-	username := "-"
-	if url.User != nil {
-		if name := url.User.Username(); name != "" {
-			username = name
-		}
-	}
-
-	host, _, err := net.SplitHostPort(req.RemoteAddr)
-
-	if err != nil {
-		host = req.RemoteAddr
-	}
-
-	uri := req.RequestURI
-
-	// Requests using the CONNECT method over HTTP/2.0 must use
-	// the authority field (aka r.Host) to identify the target.
-	// Refer: https://httpwg.github.io/specs/rfc7540.html#CONNECT
-	if req.ProtoMajor == 2 && req.Method == "CONNECT" {
-		uri = req.Host
-	}
-	if uri == "" {
-		uri = url.RequestURI()
-	}
-
-	buf := make([]byte, 0, 3*(len(host)+len(username)+len(req.Method)+len(uri)+len(req.Proto)+50)/2)
-	buf = append(buf, host...)
-	buf = append(buf, " - "...)
-	buf = append(buf, username...)
-	buf = append(buf, " ["...)
-	buf = append(buf, ts.Format("02/Jan/2006:15:04:05 -0700")...)
-	buf = append(buf, `] "`...)
-	buf = append(buf, req.Method...)
-	buf = append(buf, " "...)
-	buf = appendQuoted(buf, uri)
-	buf = append(buf, " "...)
-	buf = append(buf, req.Proto...)
-	buf = append(buf, `" `...)
-	buf = append(buf, strconv.Itoa(status)...)
-	buf = append(buf, " "...)
-	buf = append(buf, strconv.Itoa(size)...)
-	return buf
-}
-
-// writeLog writes a log entry for req to w in Apache Common Log Format.
-// ts is the timestamp with which the entry should be logged.
-// status and size are used to provide the response HTTP status and size.
-func writeLog(w io.Writer, req *http.Request, url url.URL, ts time.Time, status, size int) {
-	buf := buildCommonLogLine(req, url, ts, status, size)
-	buf = append(buf, '\n')
-	w.Write(buf)
-}
-
-// writeCombinedLog writes a log entry for req to w in Apache Combined Log Format.
-// ts is the timestamp with which the entry should be logged.
-// status and size are used to provide the response HTTP status and size.
-func writeCombinedLog(w io.Writer, req *http.Request, url url.URL, ts time.Time, status, size int) {
-	buf := buildCommonLogLine(req, url, ts, status, size)
-	buf = append(buf, ` "`...)
-	buf = appendQuoted(buf, req.Referer())
-	buf = append(buf, `" "`...)
-	buf = appendQuoted(buf, req.UserAgent())
-	buf = append(buf, '"', '\n')
-	w.Write(buf)
-}
-
-// CombinedLoggingHandler return a http.Handler that wraps h and logs requests to out in
-// Apache Combined Log Format.
-//
-// See http://httpd.apache.org/docs/2.2/logs.html#combined for a description of this format.
-//
-// LoggingHandler always sets the ident field of the log to -
-func CombinedLoggingHandler(out io.Writer, h http.Handler) http.Handler {
-	return combinedLoggingHandler{out, h}
-}
-
-// LoggingHandler return a http.Handler that wraps h and logs requests to out in
-// Apache Common Log Format (CLF).
-//
-// See http://httpd.apache.org/docs/2.2/logs.html#common for a description of this format.
-//
-// LoggingHandler always sets the ident field of the log to -
-//
-// Example:
-//
-//  r := mux.NewRouter()
-//  r.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-//  	w.Write([]byte("This is a catch-all route"))
-//  })
-//  loggedRouter := handlers.LoggingHandler(os.Stdout, r)
-//  http.ListenAndServe(":1123", loggedRouter)
-//
-func LoggingHandler(out io.Writer, h http.Handler) http.Handler {
-	return loggingHandler{out, h}
-}
-
 // isContentType validates the Content-Type header matches the supplied
 // contentType. That is, its type and subtype match.
 func isContentType(h http.Header, contentType string) bool {

vendor/github.com/gorilla/handlers/logging.go

@@ -0,0 +1,252 @@
+// Copyright 2013 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package handlers
+
+import (
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"strconv"
+	"time"
+	"unicode/utf8"
+)
+
+// Logging
+
+// FormatterParams is the structure any formatter will be handed when time to log comes
+type LogFormatterParams struct {
+	Request    *http.Request
+	URL        url.URL
+	TimeStamp  time.Time
+	StatusCode int
+	Size       int
+}
+
+// LogFormatter gives the signature of the formatter function passed to CustomLoggingHandler
+type LogFormatter func(writer io.Writer, params LogFormatterParams)
+
+// loggingHandler is the http.Handler implementation for LoggingHandlerTo and its
+// friends
+
+type loggingHandler struct {
+	writer    io.Writer
+	handler   http.Handler
+	formatter LogFormatter
+}
+
+func (h loggingHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	t := time.Now()
+	logger := makeLogger(w)
+	url := *req.URL
+
+	h.handler.ServeHTTP(logger, req)
+
+	params := LogFormatterParams{
+		Request:    req,
+		URL:        url,
+		TimeStamp:  t,
+		StatusCode: logger.Status(),
+		Size:       logger.Size(),
+	}
+
+	h.formatter(h.writer, params)
+}
+
+func makeLogger(w http.ResponseWriter) loggingResponseWriter {
+	var logger loggingResponseWriter = &responseLogger{w: w, status: http.StatusOK}
+	if _, ok := w.(http.Hijacker); ok {
+		logger = &hijackLogger{responseLogger{w: w, status: http.StatusOK}}
+	}
+	h, ok1 := logger.(http.Hijacker)
+	c, ok2 := w.(http.CloseNotifier)
+	if ok1 && ok2 {
+		return hijackCloseNotifier{logger, h, c}
+	}
+	if ok2 {
+		return &closeNotifyWriter{logger, c}
+	}
+	return logger
+}
+
+type commonLoggingResponseWriter interface {
+	http.ResponseWriter
+	http.Flusher
+	Status() int
+	Size() int
+}
+
+const lowerhex = "0123456789abcdef"
+
+func appendQuoted(buf []byte, s string) []byte {
+	var runeTmp [utf8.UTFMax]byte
+	for width := 0; len(s) > 0; s = s[width:] {
+		r := rune(s[0])
+		width = 1
+		if r >= utf8.RuneSelf {
+			r, width = utf8.DecodeRuneInString(s)
+		}
+		if width == 1 && r == utf8.RuneError {
+			buf = append(buf, `\x`...)
+			buf = append(buf, lowerhex[s[0]>>4])
+			buf = append(buf, lowerhex[s[0]&0xF])
+			continue
+		}
+		if r == rune('"') || r == '\\' { // always backslashed
+			buf = append(buf, '\\')
+			buf = append(buf, byte(r))
+			continue
+		}
+		if strconv.IsPrint(r) {
+			n := utf8.EncodeRune(runeTmp[:], r)
+			buf = append(buf, runeTmp[:n]...)
+			continue
+		}
+		switch r {
+		case '\a':
+			buf = append(buf, `\a`...)
+		case '\b':
+			buf = append(buf, `\b`...)
+		case '\f':
+			buf = append(buf, `\f`...)
+		case '\n':
+			buf = append(buf, `\n`...)
+		case '\r':
+			buf = append(buf, `\r`...)
+		case '\t':
+			buf = append(buf, `\t`...)
+		case '\v':
+			buf = append(buf, `\v`...)
+		default:
+			switch {
+			case r < ' ':
+				buf = append(buf, `\x`...)
+				buf = append(buf, lowerhex[s[0]>>4])
+				buf = append(buf, lowerhex[s[0]&0xF])
+			case r > utf8.MaxRune:
+				r = 0xFFFD
+				fallthrough
+			case r < 0x10000:
+				buf = append(buf, `\u`...)
+				for s := 12; s >= 0; s -= 4 {
+					buf = append(buf, lowerhex[r>>uint(s)&0xF])
+				}
+			default:
+				buf = append(buf, `\U`...)
+				for s := 28; s >= 0; s -= 4 {
+					buf = append(buf, lowerhex[r>>uint(s)&0xF])
+				}
+			}
+		}
+	}
+	return buf
+
+}
+
+// buildCommonLogLine builds a log entry for req in Apache Common Log Format.
+// ts is the timestamp with which the entry should be logged.
+// status and size are used to provide the response HTTP status and size.
+func buildCommonLogLine(req *http.Request, url url.URL, ts time.Time, status int, size int) []byte {
+	username := "-"
+	if url.User != nil {
+		if name := url.User.Username(); name != "" {
+			username = name
+		}
+	}
+
+	host, _, err := net.SplitHostPort(req.RemoteAddr)
+
+	if err != nil {
+		host = req.RemoteAddr
+	}
+
+	uri := req.RequestURI
+
+	// Requests using the CONNECT method over HTTP/2.0 must use
+	// the authority field (aka r.Host) to identify the target.
+	// Refer: https://httpwg.github.io/specs/rfc7540.html#CONNECT
+	if req.ProtoMajor == 2 && req.Method == "CONNECT" {
+		uri = req.Host
+	}
+	if uri == "" {
+		uri = url.RequestURI()
+	}
+
+	buf := make([]byte, 0, 3*(len(host)+len(username)+len(req.Method)+len(uri)+len(req.Proto)+50)/2)
+	buf = append(buf, host...)
+	buf = append(buf, " - "...)
+	buf = append(buf, username...)
+	buf = append(buf, " ["...)
+	buf = append(buf, ts.Format("02/Jan/2006:15:04:05 -0700")...)
+	buf = append(buf, `] "`...)
+	buf = append(buf, req.Method...)
+	buf = append(buf, " "...)
+	buf = appendQuoted(buf, uri)
+	buf = append(buf, " "...)
+	buf = append(buf, req.Proto...)
+	buf = append(buf, `" `...)
+	buf = append(buf, strconv.Itoa(status)...)
+	buf = append(buf, " "...)
+	buf = append(buf, strconv.Itoa(size)...)
+	return buf
+}
+
+// writeLog writes a log entry for req to w in Apache Common Log Format.
+// ts is the timestamp with which the entry should be logged.
+// status and size are used to provide the response HTTP status and size.
+func writeLog(writer io.Writer, params LogFormatterParams) {
+	buf := buildCommonLogLine(params.Request, params.URL, params.TimeStamp, params.StatusCode, params.Size)
+	buf = append(buf, '\n')
+	writer.Write(buf)
+}
+
+// writeCombinedLog writes a log entry for req to w in Apache Combined Log Format.
+// ts is the timestamp with which the entry should be logged.
+// status and size are used to provide the response HTTP status and size.
+func writeCombinedLog(writer io.Writer, params LogFormatterParams) {
+	buf := buildCommonLogLine(params.Request, params.URL, params.TimeStamp, params.StatusCode, params.Size)
+	buf = append(buf, ` "`...)
+	buf = appendQuoted(buf, params.Request.Referer())
+	buf = append(buf, `" "`...)
+	buf = appendQuoted(buf, params.Request.UserAgent())
+	buf = append(buf, '"', '\n')
+	writer.Write(buf)
+}
+
+// CombinedLoggingHandler return a http.Handler that wraps h and logs requests to out in
+// Apache Combined Log Format.
+//
+// See http://httpd.apache.org/docs/2.2/logs.html#combined for a description of this format.
+//
+// LoggingHandler always sets the ident field of the log to -
+func CombinedLoggingHandler(out io.Writer, h http.Handler) http.Handler {
+	return loggingHandler{out, h, writeCombinedLog}
+}
+
+// LoggingHandler return a http.Handler that wraps h and logs requests to out in
+// Apache Common Log Format (CLF).
+//
+// See http://httpd.apache.org/docs/2.2/logs.html#common for a description of this format.
+//
+// LoggingHandler always sets the ident field of the log to -
+//
+// Example:
+//
+//  r := mux.NewRouter()
+//  r.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+//  	w.Write([]byte("This is a catch-all route"))
+//  })
+//  loggedRouter := handlers.LoggingHandler(os.Stdout, r)
+//  http.ListenAndServe(":1123", loggedRouter)
+//
+func LoggingHandler(out io.Writer, h http.Handler) http.Handler {
+	return loggingHandler{out, h, writeLog}
+}
+
+// CustomLoggingHandler provides a way to supply a custom log formatter
+// while taking advantage of the mechanisms in this package
+func CustomLoggingHandler(out io.Writer, h http.Handler, f LogFormatter) http.Handler {
+	return loggingHandler{out, h, f}
+}

vendor/github.com/gorilla/websocket/.travis.yml

@@ -3,9 +3,6 @@ sudo: false
 
 matrix:
   include:
-    - go: 1.4
-    - go: 1.5.x
-    - go: 1.6.x
     - go: 1.7.x
     - go: 1.8.x
     - go: 1.9.x

vendor/github.com/gorilla/websocket/client.go

@@ -69,6 +69,17 @@ type Dialer struct {
 	// do not limit the size of the messages that can be sent or received.
 	ReadBufferSize, WriteBufferSize int
 
+	// WriteBufferPool is a pool of buffers for write operations. If the value
+	// is not set, then write buffers are allocated to the connection for the
+	// lifetime of the connection.
+	//
+	// A pool is most useful when the application has a modest volume of writes
+	// across a large number of connections.
+	//
+	// Applications should use a single pool for each unique value of
+	// WriteBufferSize.
+	WriteBufferPool BufferPool
+
 	// Subprotocols specifies the client's requested subprotocols.
 	Subprotocols []string
 
@@ -277,7 +288,7 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
 		}
 	}
 
-	conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize)
+	conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize, d.WriteBufferPool, nil, nil)
 
 	if err := req.Write(netConn); err != nil {
 		return nil, nil, err

vendor/github.com/gorilla/websocket/conn.go

@@ -223,6 +223,20 @@ func isValidReceivedCloseCode(code int) bool {
 	return validReceivedCloseCodes[code] || (code >= 3000 && code <= 4999)
 }
 
+// BufferPool represents a pool of buffers. The *sync.Pool type satisfies this
+// interface.  The type of the value stored in a pool is not specified.
+type BufferPool interface {
+	// Get gets a value from the pool or returns nil if the pool is empty.
+	Get() interface{}
+	// Put adds a value to the pool.
+	Put(interface{})
+}
+
+// writePoolData is the type added to the write buffer pool. This wrapper is
+// used to prevent applications from peeking at and depending on the values
+// added to the pool.
+type writePoolData struct{ buf []byte }
+
 // The Conn type represents a WebSocket connection.
 type Conn struct {
 	conn        net.Conn
@@ -232,6 +246,8 @@ type Conn struct {
 	// Write fields
 	mu            chan bool // used as mutex to protect write to conn
 	writeBuf      []byte    // frame is constructed in this buffer.
+	writePool     BufferPool
+	writeBufSize  int
 	writeDeadline time.Time
 	writer        io.WriteCloser // the current writer returned to the application
 	isWriting     bool           // for best-effort concurrent write detection
@@ -263,64 +279,29 @@ type Conn struct {
 	newDecompressionReader func(io.Reader) io.ReadCloser
 }
 
-func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int) *Conn {
+func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int, writeBufferPool BufferPool, br *bufio.Reader, writeBuf []byte) *Conn {
-	return newConnBRW(conn, isServer, readBufferSize, writeBufferSize, nil)
-}
 
-type writeHook struct {
-	p []byte
-}
-
-func (wh *writeHook) Write(p []byte) (int, error) {
-	wh.p = p
-	return len(p), nil
-}
-
-func newConnBRW(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int, brw *bufio.ReadWriter) *Conn {
-	mu := make(chan bool, 1)
-	mu <- true
-
-	var br *bufio.Reader
-	if readBufferSize == 0 && brw != nil && brw.Reader != nil {
-		// Reuse the supplied bufio.Reader if the buffer has a useful size.
-		// This code assumes that peek on a reader returns
-		// bufio.Reader.buf[:0].
-		brw.Reader.Reset(conn)
-		if p, err := brw.Reader.Peek(0); err == nil && cap(p) >= 256 {
-			br = brw.Reader
-		}
-	}
 	if br == nil {
 		if readBufferSize == 0 {
 			readBufferSize = defaultReadBufferSize
-		}
+		} else if readBufferSize < maxControlFramePayloadSize {
-		if readBufferSize < maxControlFramePayloadSize {
+			// must be large enough for control frame
 			readBufferSize = maxControlFramePayloadSize
 		}
 		br = bufio.NewReaderSize(conn, readBufferSize)
 	}
 
-	var writeBuf []byte
+	if writeBufferSize <= 0 {
-	if writeBufferSize == 0 && brw != nil && brw.Writer != nil {
+		writeBufferSize = defaultWriteBufferSize
-		// Use the bufio.Writer's buffer if the buffer has a useful size. This
+	}
-		// code assumes that bufio.Writer.buf[:1] is passed to the
+	writeBufferSize += maxFrameHeaderSize
-		// bufio.Writer's underlying writer.
+
-		var wh writeHook
+	if writeBuf == nil && writeBufferPool == nil {
-		brw.Writer.Reset(&wh)
+		writeBuf = make([]byte, writeBufferSize)
-		brw.Writer.WriteByte(0)
-		brw.Flush()
-		if cap(wh.p) >= maxFrameHeaderSize+256 {
-			writeBuf = wh.p[:cap(wh.p)]
-		}
-	}
-
-	if writeBuf == nil {
-		if writeBufferSize == 0 {
-			writeBufferSize = defaultWriteBufferSize
-		}
-		writeBuf = make([]byte, writeBufferSize+maxFrameHeaderSize)
 	}
 
+	mu := make(chan bool, 1)
+	mu <- true
 	c := &Conn{
 		isServer:               isServer,
 		br:                     br,
@@ -328,6 +309,8 @@ func newConnBRW(conn net.Conn, isServer bool, readBufferSize, writeBufferSize in
 		mu:                     mu,
 		readFinal:              true,
 		writeBuf:               writeBuf,
+		writePool:              writeBufferPool,
+		writeBufSize:           writeBufferSize,
 		enableWriteCompression: true,
 		compressionLevel:       defaultCompressionLevel,
 	}
@@ -370,6 +353,15 @@ func (c *Conn) writeFatal(err error) error {
 	return err
 }
 
+func (c *Conn) read(n int) ([]byte, error) {
+	p, err := c.br.Peek(n)
+	if err == io.EOF {
+		err = errUnexpectedEOF
+	}
+	c.br.Discard(len(p))
+	return p, err
+}
+
 func (c *Conn) write(frameType int, deadline time.Time, buf0, buf1 []byte) error {
 	<-c.mu
 	defer func() { c.mu <- true }()
@@ -475,7 +467,19 @@ func (c *Conn) prepWrite(messageType int) error {
 	c.writeErrMu.Lock()
 	err := c.writeErr
 	c.writeErrMu.Unlock()
-	return err
+	if err != nil {
+		return err
+	}
+
+	if c.writeBuf == nil {
+		wpd, ok := c.writePool.Get().(writePoolData)
+		if ok {
+			c.writeBuf = wpd.buf
+		} else {
+			c.writeBuf = make([]byte, c.writeBufSize)
+		}
+	}
+	return nil
 }
 
 // NextWriter returns a writer for the next message to send. The writer's Close
@@ -601,6 +605,10 @@ func (w *messageWriter) flushFrame(final bool, extra []byte) error {
 
 	if final {
 		c.writer = nil
+		if c.writePool != nil {
+			c.writePool.Put(writePoolData{buf: c.writeBuf})
+			c.writeBuf = nil
+		}
 		return nil
 	}
 

vendor/github.com/gorilla/websocket/conn_read.go

@@ -1,18 +0,0 @@
-// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.5
-
-package websocket
-
-import "io"
-
-func (c *Conn) read(n int) ([]byte, error) {
-	p, err := c.br.Peek(n)
-	if err == io.EOF {
-		err = errUnexpectedEOF
-	}
-	c.br.Discard(len(p))
-	return p, err
-}

vendor/github.com/gorilla/websocket/conn_read_legacy.go

@@ -1,21 +0,0 @@
-// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !go1.5
-
-package websocket
-
-import "io"
-
-func (c *Conn) read(n int) ([]byte, error) {
-	p, err := c.br.Peek(n)
-	if err == io.EOF {
-		err = errUnexpectedEOF
-	}
-	if len(p) > 0 {
-		// advance over the bytes just read
-		io.ReadFull(c.br, p)
-	}
-	return p, err
-}

vendor/github.com/gorilla/websocket/server.go

@@ -7,6 +7,7 @@ package websocket
 import (
 	"bufio"
 	"errors"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
@@ -33,10 +34,23 @@ type Upgrader struct {
 	// or received.
 	ReadBufferSize, WriteBufferSize int
 
+	// WriteBufferPool is a pool of buffers for write operations. If the value
+	// is not set, then write buffers are allocated to the connection for the
+	// lifetime of the connection.
+	//
+	// A pool is most useful when the application has a modest volume of writes
+	// across a large number of connections.
+	//
+	// Applications should use a single pool for each unique value of
+	// WriteBufferSize.
+	WriteBufferPool BufferPool
+
 	// Subprotocols specifies the server's supported protocols in order of
-	// preference. If this field is set, then the Upgrade method negotiates a
+	// preference. If this field is not nil, then the Upgrade method negotiates a
 	// subprotocol by selecting the first match in this list with a protocol
-	// requested by the client.
+	// requested by the client. If there's no match, then no protocol is
+	// negotiated (the Sec-Websocket-Protocol header is not included in the
+	// handshake response).
 	Subprotocols []string
 
 	// Error specifies the function for generating HTTP error responses. If Error
@@ -177,7 +191,21 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
 		return nil, errors.New("websocket: client sent data before handshake is complete")
 	}
 
-	c := newConnBRW(netConn, true, u.ReadBufferSize, u.WriteBufferSize, brw)
+	var br *bufio.Reader
+	if u.ReadBufferSize == 0 && bufioReaderSize(netConn, brw.Reader) > 256 {
+		// Reuse hijacked buffered reader as connection reader.
+		br = brw.Reader
+	}
+
+	buf := bufioWriterBuffer(netConn, brw.Writer)
+
+	var writeBuf []byte
+	if u.WriteBufferPool == nil && u.WriteBufferSize == 0 && len(buf) >= maxFrameHeaderSize+256 {
+		// Reuse hijacked write buffer as connection buffer.
+		writeBuf = buf
+	}
+
+	c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize, u.WriteBufferPool, br, writeBuf)
 	c.subprotocol = subprotocol
 
 	if compress {
@@ -185,7 +213,13 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
 		c.newDecompressionReader = decompressNoContextTakeover
 	}
 
-	p := c.writeBuf[:0]
+	// Use larger of hijacked buffer and connection write buffer for header.
+	p := buf
+	if len(c.writeBuf) > len(p) {
+		p = c.writeBuf
+	}
+	p = p[:0]
+
 	p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
 	p = append(p, computeAcceptKey(challengeKey)...)
 	p = append(p, "\r\n"...)
@@ -296,3 +330,40 @@ func IsWebSocketUpgrade(r *http.Request) bool {
 	return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
 		tokenListContainsValue(r.Header, "Upgrade", "websocket")
 }
+
+// bufioReader size returns the size of a bufio.Reader.
+func bufioReaderSize(originalReader io.Reader, br *bufio.Reader) int {
+	// This code assumes that peek on a reset reader returns
+	// bufio.Reader.buf[:0].
+	// TODO: Use bufio.Reader.Size() after Go 1.10
+	br.Reset(originalReader)
+	if p, err := br.Peek(0); err == nil {
+		return cap(p)
+	}
+	return 0
+}
+
+// writeHook is an io.Writer that records the last slice passed to it vio
+// io.Writer.Write.
+type writeHook struct {
+	p []byte
+}
+
+func (wh *writeHook) Write(p []byte) (int, error) {
+	wh.p = p
+	return len(p), nil
+}
+
+// bufioWriterBuffer grabs the buffer from a bufio.Writer.
+func bufioWriterBuffer(originalWriter io.Writer, bw *bufio.Writer) []byte {
+	// This code assumes that bufio.Writer.buf[:1] is passed to the
+	// bufio.Writer's underlying writer.
+	var wh writeHook
+	bw.Reset(&wh)
+	bw.WriteByte(0)
+	bw.Flush()
+
+	bw.Reset(originalWriter)
+
+	return wh.p[:cap(wh.p)]
+}

vendor/github.com/hashicorp/errwrap/go.mod

@@ -0,0 +1 @@
+module github.com/hashicorp/errwrap

vendor/github.com/hashicorp/go-multierror/go.mod

@@ -0,0 +1,3 @@
+module github.com/hashicorp/go-multierror
+
+require github.com/hashicorp/errwrap v1.0.0

vendor/github.com/hashicorp/go-multierror/go.sum

@@ -0,0 +1,4 @@
+github.com/hashicorp/errwrap v0.0.0-20141028054710-7554cd9344ce h1:prjrVgOk2Yg6w+PflHoszQNLTUh4kaByUcEWM/9uin4=
+github.com/hashicorp/errwrap v0.0.0-20141028054710-7554cd9344ce/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
+github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=

vendor/github.com/hashicorp/memberlist/Makefile

@@ -16,4 +16,4 @@ deps:
 	go get -d -v ./...
 	echo $(DEPS) | xargs -n1 go get -d
 
-.PNONY: test cov integ
+.PHONY: test cov integ

vendor/github.com/hashicorp/memberlist/memberlist.go

@@ -15,6 +15,7 @@ multiple routes.
 package memberlist
 
 import (
+	"container/list"
 	"fmt"
 	"log"
 	"net"
@@ -34,6 +35,7 @@ type Memberlist struct {
 	sequenceNum uint32 // Local sequence number
 	incarnation uint32 // Local incarnation number
 	numNodes    uint32 // Number of known nodes (estimate)
+	pushPullReq uint32 // Number of push/pull requests
 
 	config         *Config
 	shutdown       int32 // Used as an atomic boolean value
@@ -45,7 +47,11 @@ type Memberlist struct {
 	leaveLock    sync.Mutex // Serializes calls to Leave
 
 	transport Transport
-	handoff   chan msgHandoff
+
+	handoffCh            chan struct{}
+	highPriorityMsgQueue *list.List
+	lowPriorityMsgQueue  *list.List
+	msgQueueLock         sync.Mutex
 
 	nodeLock   sync.RWMutex
 	nodes      []*nodeState          // Known nodes
@@ -160,17 +166,19 @@ func newMemberlist(conf *Config) (*Memberlist, error) {
 	}
 
 	m := &Memberlist{
-		config:         conf,
+		config:               conf,
-		shutdownCh:     make(chan struct{}),
+		shutdownCh:           make(chan struct{}),
-		leaveBroadcast: make(chan struct{}, 1),
+		leaveBroadcast:       make(chan struct{}, 1),
-		transport:      transport,
+		transport:            transport,
-		handoff:        make(chan msgHandoff, conf.HandoffQueueDepth),
+		handoffCh:            make(chan struct{}, 1),
-		nodeMap:        make(map[string]*nodeState),
+		highPriorityMsgQueue: list.New(),
-		nodeTimers:     make(map[string]*suspicion),
+		lowPriorityMsgQueue:  list.New(),
-		awareness:      newAwareness(conf.AwarenessMaxMultiplier),
+		nodeMap:              make(map[string]*nodeState),
-		ackHandlers:    make(map[uint32]*ackHandler),
+		nodeTimers:           make(map[string]*suspicion),
-		broadcasts:     &TransmitLimitedQueue{RetransmitMult: conf.RetransmitMult},
+		awareness:            newAwareness(conf.AwarenessMaxMultiplier),
-		logger:         logger,
+		ackHandlers:          make(map[uint32]*ackHandler),
+		broadcasts:           &TransmitLimitedQueue{RetransmitMult: conf.RetransmitMult},
+		logger:               logger,
 	}
 	m.broadcasts.NumNodes = func() int {
 		return m.estNumNodes()

vendor/github.com/hashicorp/memberlist/net.go

@@ -8,9 +8,10 @@ import (
 	"hash/crc32"
 	"io"
 	"net"
+	"sync/atomic"
 	"time"
 
-	"github.com/armon/go-metrics"
+	metrics "github.com/armon/go-metrics"
 	"github.com/hashicorp/go-msgpack/codec"
 )
 
@@ -71,7 +72,8 @@ const (
 	compoundOverhead       = 2   // Assumed overhead per entry in compoundHeader
 	userMsgOverhead        = 1
 	blockingWarning        = 10 * time.Millisecond // Warn if a UDP packet takes this long to process
-	maxPushStateBytes      = 10 * 1024 * 1024
+	maxPushStateBytes      = 20 * 1024 * 1024
+	maxPushPullRequests    = 128 // Maximum number of concurrent push/pull requests
 )
 
 // ping request sent directly to node
@@ -238,6 +240,16 @@ func (m *Memberlist) handleConn(conn net.Conn) {
 			m.logger.Printf("[ERR] memberlist: Failed to receive user message: %s %s", err, LogConn(conn))
 		}
 	case pushPullMsg:
+		// Increment counter of pending push/pulls
+		numConcurrent := atomic.AddUint32(&m.pushPullReq, 1)
+		defer atomic.AddUint32(&m.pushPullReq, ^uint32(0))
+
+		// Check if we have too many open push/pull requests
+		if numConcurrent >= maxPushPullRequests {
+			m.logger.Printf("[ERR] memberlist: Too many pending push/pull requests")
+			return
+		}
+
 		join, remoteNodes, userState, err := m.readRemoteState(bufConn, dec)
 		if err != nil {
 			m.logger.Printf("[ERR] memberlist: Failed to read remote state: %s %s", err, LogConn(conn))
@@ -357,10 +369,25 @@ func (m *Memberlist) handleCommand(buf []byte, from net.Addr, timestamp time.Tim
 	case deadMsg:
 		fallthrough
 	case userMsg:
-		select {
+		// Determine the message queue, prioritize alive
-		case m.handoff <- msgHandoff{msgType, buf, from}:
+		queue := m.lowPriorityMsgQueue
-		default:
+		if msgType == aliveMsg {
+			queue = m.highPriorityMsgQueue
+		}
+
+		// Check for overflow and append if not full
+		m.msgQueueLock.Lock()
+		if queue.Len() >= m.config.HandoffQueueDepth {
 			m.logger.Printf("[WARN] memberlist: handler queue full, dropping message (%d) %s", msgType, LogAddress(from))
+		} else {
+			queue.PushBack(msgHandoff{msgType, buf, from})
+		}
+		m.msgQueueLock.Unlock()
+
+		// Notify of pending message
+		select {
+		case m.handoffCh <- struct{}{}:
+		default:
 		}
 
 	default:
@@ -368,28 +395,51 @@ func (m *Memberlist) handleCommand(buf []byte, from net.Addr, timestamp time.Tim
 	}
 }
 
+// getNextMessage returns the next message to process in priority order, using LIFO
+func (m *Memberlist) getNextMessage() (msgHandoff, bool) {
+	m.msgQueueLock.Lock()
+	defer m.msgQueueLock.Unlock()
+
+	if el := m.highPriorityMsgQueue.Back(); el != nil {
+		m.highPriorityMsgQueue.Remove(el)
+		msg := el.Value.(msgHandoff)
+		return msg, true
+	} else if el := m.lowPriorityMsgQueue.Back(); el != nil {
+		m.lowPriorityMsgQueue.Remove(el)
+		msg := el.Value.(msgHandoff)
+		return msg, true
+	}
+	return msgHandoff{}, false
+}
+
 // packetHandler is a long running goroutine that processes messages received
 // over the packet interface, but is decoupled from the listener to avoid
 // blocking the listener which may cause ping/ack messages to be delayed.
 func (m *Memberlist) packetHandler() {
 	for {
 		select {
-		case msg := <-m.handoff:
+		case <-m.handoffCh:
-			msgType := msg.msgType
+			for {
-			buf := msg.buf
+				msg, ok := m.getNextMessage()
-			from := msg.from
+				if !ok {
+					break
+				}
+				msgType := msg.msgType
+				buf := msg.buf
+				from := msg.from
 
-			switch msgType {
+				switch msgType {
-			case suspectMsg:
+				case suspectMsg:
-				m.handleSuspect(buf, from)
+					m.handleSuspect(buf, from)
-			case aliveMsg:
+				case aliveMsg:
-				m.handleAlive(buf, from)
+					m.handleAlive(buf, from)
-			case deadMsg:
+				case deadMsg:
-				m.handleDead(buf, from)
+					m.handleDead(buf, from)
-			case userMsg:
+				case userMsg:
-				m.handleUser(buf, from)
+					m.handleUser(buf, from)
-			default:
+				default:
-				m.logger.Printf("[ERR] memberlist: Message type (%d) not supported %s (packet handler)", msgType, LogAddress(from))
+					m.logger.Printf("[ERR] memberlist: Message type (%d) not supported %s (packet handler)", msgType, LogAddress(from))
+				}
 			}
 
 		case <-m.shutdownCh:
@@ -1094,7 +1144,7 @@ func (m *Memberlist) sendPingAndWaitForAck(addr string, ping ping, deadline time
 	}
 
 	if ack.SeqNo != ping.SeqNo {
-		return false, fmt.Errorf("Sequence number from ack (%d) doesn't match ping (%d)", ack.SeqNo, ping.SeqNo, LogConn(conn))
+		return false, fmt.Errorf("Sequence number from ack (%d) doesn't match ping (%d)", ack.SeqNo, ping.SeqNo)
 	}
 
 	return true, nil

vendor/github.com/lib/pq/go.mod

@@ -0,0 +1 @@
+module github.com/lib/pq

vendor/github.com/lib/pq/notify.go

@@ -725,6 +725,9 @@ func (l *Listener) Close() error {
 	}
 	l.isClosed = true
 
+	// Unblock calls to Listen()
+	l.reconnectCond.Broadcast()
+
 	return nil
 }
 

vendor/github.com/mailru/easyjson/jlexer/lexer.go

@@ -240,7 +240,7 @@ func (r *Lexer) fetchNumber() {
 
 // findStringLen tries to scan into the string literal for ending quote char to determine required size.
 // The size will be exact if no escapes are present and may be inexact if there are escaped chars.
-func findStringLen(data []byte) (hasEscapes bool, length int) {
+func findStringLen(data []byte) (isValid, hasEscapes bool, length int) {
 	delta := 0
 
 	for i := 0; i < len(data); i++ {
@@ -252,11 +252,11 @@ func findStringLen(data []byte) (hasEscapes bool, length int) {
 				delta++
 			}
 		case '"':
-			return (delta > 0), (i - delta)
+			return true, (delta > 0), (i - delta)
 		}
 	}
 
-	return false, len(data)
+	return false, false, len(data)
 }
 
 // getu4 decodes \uXXXX from the beginning of s, returning the hex value,
@@ -342,7 +342,12 @@ func (r *Lexer) fetchString() {
 	r.pos++
 	data := r.Data[r.pos:]
 
-	hasEscapes, length := findStringLen(data)
+	isValid, hasEscapes, length := findStringLen(data)
+	if !isValid {
+		r.pos += length
+		r.errParse("unterminated string literal")
+		return
+	}
 	if !hasEscapes {
 		r.token.byteValue = data[:length]
 		r.pos += length + 1

vendor/github.com/mattn/go-runewidth/runewidth.go

@@ -1,13 +1,24 @@
 package runewidth
 
+import "os"
+
 var (
 	// EastAsianWidth will be set true if the current locale is CJK
-	EastAsianWidth = IsEastAsian()
+	EastAsianWidth bool
 
 	// DefaultCondition is a condition in current locale
 	DefaultCondition = &Condition{EastAsianWidth}
 )
 
+func init() {
+	env := os.Getenv("RUNEWIDTH_EASTASIAN")
+	if env == "" {
+		EastAsianWidth = IsEastAsian()
+	} else {
+		EastAsianWidth = env == "1"
+	}
+}
+
 type interval struct {
 	first rune
 	last  rune
@@ -55,6 +66,7 @@ var private = table{
 var nonprint = table{
 	{0x0000, 0x001F}, {0x007F, 0x009F}, {0x00AD, 0x00AD},
 	{0x070F, 0x070F}, {0x180B, 0x180E}, {0x200B, 0x200F},
+	{0x2028, 0x2029},
 	{0x202A, 0x202E}, {0x206A, 0x206F}, {0xD800, 0xDFFF},
 	{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0xFFFE, 0xFFFF},
 }

vendor/github.com/mitchellh/go-homedir/go.mod

@@ -0,0 +1 @@
+module github.com/mitchellh/go-homedir

vendor/github.com/mitchellh/go-homedir/homedir.go

@@ -141,14 +141,16 @@ func dirWindows() (string, error) {
 		return home, nil
 	}
 
+	// Prefer standard environment variable USERPROFILE
+	if home := os.Getenv("USERPROFILE"); home != "" {
+		return home, nil
+	}
+
 	drive := os.Getenv("HOMEDRIVE")
 	path := os.Getenv("HOMEPATH")
 	home := drive + path
 	if drive == "" || path == "" {
-		home = os.Getenv("USERPROFILE")
+		return "", errors.New("HOMEDRIVE, HOMEPATH, or USERPROFILE are blank")
-	}
-	if home == "" {
-		return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
 	}
 
 	return home, nil

vendor/github.com/mitchellh/mapstructure/go.mod

@@ -0,0 +1 @@
+module github.com/mitchellh/mapstructure

vendor/github.com/prometheus/common/expfmt/text_parse.go

@@ -359,7 +359,7 @@ func (p *TextParser) startLabelValue() stateFn {
 		}
 		return p.readingValue
 	default:
-		p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.Value))
+		p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.GetValue()))
 		return nil
 	}
 }

vendor/github.com/prometheus/procfs/.travis.yml

@@ -3,11 +3,8 @@ sudo: false
 language: go
 
 go:
-- 1.7.x
-- 1.8.x
 - 1.9.x
 - 1.10.x
-- 1.x
 
 go_import_path: github.com/prometheus/procfs
 

vendor/github.com/rs/cors/README.md

@@ -49,6 +49,14 @@ The server now runs on `localhost:8080`:
 
     {"hello": "world"}
 
+### Allow * With Credentials Security Protection
+
+This library has been modified to avoid a well known security issue when configured with `AllowedOrigins` to `*` and `AllowCredentials` to `true`. Such setup used to make the library reflects the request `Origin` header value, working around a security protection embedded into the standard that makes clients to refuse such configuration. This behavior has been removed with [#55](https://github.com/rs/cors/issues/55) and [#57](https://github.com/rs/cors/issues/57).
+
+If you depend on this behavior and understand the implications, you can restore it using the `AllowOriginFunc` with `func(origin string) {return true}`.
+
+Please refer to [#55](https://github.com/rs/cors/issues/55) for more information about the security implications.
+
 ### More Examples
 
 * `net/http`: [examples/nethttp/server.go](https://github.com/rs/cors/blob/master/examples/nethttp/server.go)

vendor/github.com/rs/cors/cors.go

@@ -174,7 +174,7 @@ func AllowAll() *Cors {
 		AllowedOrigins:   []string{"*"},
 		AllowedMethods:   []string{"HEAD", "GET", "POST", "PUT", "PATCH", "DELETE"},
 		AllowedHeaders:   []string{"*"},
-		AllowCredentials: true,
+		AllowCredentials: false,
 	})
 }
 
@@ -269,7 +269,7 @@ func (c *Cors) handlePreflight(w http.ResponseWriter, r *http.Request) {
 		c.logf("  Preflight aborted: headers '%v' not allowed", reqHeaders)
 		return
 	}
-	if c.allowedOriginsAll && !c.allowCredentials {
+	if c.allowedOriginsAll {
 		headers.Set("Access-Control-Allow-Origin", "*")
 	} else {
 		headers.Set("Access-Control-Allow-Origin", origin)
@@ -321,7 +321,7 @@ func (c *Cors) handleActualRequest(w http.ResponseWriter, r *http.Request) {
 
 		return
 	}
-	if c.allowedOriginsAll && !c.allowCredentials {
+	if c.allowedOriginsAll {
 		headers.Set("Access-Control-Allow-Origin", "*")
 	} else {
 		headers.Set("Access-Control-Allow-Origin", origin)

vendor/github.com/sirupsen/logrus/.travis.yml

@@ -1,9 +1,7 @@
 language: go
 go:
-  - 1.6.x
+  - 1.9.x
-  - 1.7.x
+  - 1.10.x
-  - 1.8.x
-  - tip
 env:
   - GOMAXPROCS=4 GORACE=halt_on_error=1
 install:

vendor/github.com/sirupsen/logrus/README.md

@@ -241,60 +241,8 @@ func init() {
 ```
 Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
 
-| Hook  | Description |
+A list of currently known of service hook can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
-| ----- | ----------- |
+
-| [Airbrake "legacy"](https://github.com/gemnasium/logrus-airbrake-legacy-hook) | Send errors to an exception tracking service compatible with the Airbrake API V2. Uses [`airbrake-go`](https://github.com/tobi/airbrake-go) behind the scenes. |
-| [Airbrake](https://github.com/gemnasium/logrus-airbrake-hook) | Send errors to the Airbrake API V3. Uses the official [`gobrake`](https://github.com/airbrake/gobrake) behind the scenes. |
-| [Amazon Kinesis](https://github.com/evalphobia/logrus_kinesis) | Hook for logging to [Amazon Kinesis](https://aws.amazon.com/kinesis/) |
-| [Amqp-Hook](https://github.com/vladoatanasov/logrus_amqp) | Hook for logging to Amqp broker (Like RabbitMQ) |
-| [Application Insights](https://github.com/jjcollinge/logrus-appinsights) | Hook for logging to [Application Insights](https://azure.microsoft.com/en-us/services/application-insights/)
-| [AzureTableHook](https://github.com/kpfaulkner/azuretablehook/) | Hook for logging to Azure Table Storage|
-| [Bugsnag](https://github.com/Shopify/logrus-bugsnag/blob/master/bugsnag.go) | Send errors to the Bugsnag exception tracking service. |
-| [DeferPanic](https://github.com/deferpanic/dp-logrus) | Hook for logging to DeferPanic |
-| [Discordrus](https://github.com/kz/discordrus) | Hook for logging to [Discord](https://discordapp.com/) |
-| [ElasticSearch](https://github.com/sohlich/elogrus) | Hook for logging to ElasticSearch|
-| [Firehose](https://github.com/beaubrewer/logrus_firehose) | Hook for logging to [Amazon Firehose](https://aws.amazon.com/kinesis/firehose/)
-| [Fluentd](https://github.com/evalphobia/logrus_fluent) | Hook for logging to fluentd |
-| [Go-Slack](https://github.com/multiplay/go-slack) | Hook for logging to [Slack](https://slack.com) |
-| [Graylog](https://github.com/gemnasium/logrus-graylog-hook) | Hook for logging to [Graylog](http://graylog2.org/) |
-| [Hiprus](https://github.com/nubo/hiprus) | Send errors to a channel in hipchat. |
-| [Honeybadger](https://github.com/agonzalezro/logrus_honeybadger) | Hook for sending exceptions to Honeybadger |
-| [InfluxDB](https://github.com/Abramovic/logrus_influxdb) | Hook for logging to influxdb |
-| [Influxus](http://github.com/vlad-doru/influxus) | Hook for concurrently logging to [InfluxDB](http://influxdata.com/) |
-| [Journalhook](https://github.com/wercker/journalhook) | Hook for logging to `systemd-journald` |
-| [KafkaLogrus](https://github.com/tracer0tong/kafkalogrus) | Hook for logging to Kafka |
-| [Kafka REST Proxy](https://github.com/Nordstrom/logrus-kafka-rest-proxy) | Hook for logging to [Kafka REST Proxy](https://docs.confluent.io/current/kafka-rest/docs) |
-| [LFShook](https://github.com/rifflock/lfshook) | Hook for logging to the local filesystem |
-| [Logbeat](https://github.com/macandmia/logbeat) | Hook for logging to [Opbeat](https://opbeat.com/) |
-| [Logentries](https://github.com/jcftang/logentriesrus) | Hook for logging to [Logentries](https://logentries.com/) |
-| [Logentrus](https://github.com/puddingfactory/logentrus) | Hook for logging to [Logentries](https://logentries.com/) |
-| [Logmatic.io](https://github.com/logmatic/logmatic-go) | Hook for logging to [Logmatic.io](http://logmatic.io/) |
-| [Logrusly](https://github.com/sebest/logrusly) | Send logs to [Loggly](https://www.loggly.com/) |
-| [Logstash](https://github.com/bshuster-repo/logrus-logstash-hook) | Hook for logging to [Logstash](https://www.elastic.co/products/logstash) |
-| [Mail](https://github.com/zbindenren/logrus_mail) | Hook for sending exceptions via mail |
-| [Mattermost](https://github.com/shuLhan/mattermost-integration/tree/master/hooks/logrus) | Hook for logging to [Mattermost](https://mattermost.com/) |
-| [Mongodb](https://github.com/weekface/mgorus) | Hook for logging to mongodb |
-| [NATS-Hook](https://github.com/rybit/nats_logrus_hook) | Hook for logging to [NATS](https://nats.io) |
-| [Octokit](https://github.com/dorajistyle/logrus-octokit-hook) | Hook for logging to github via octokit |
-| [Papertrail](https://github.com/polds/logrus-papertrail-hook) | Send errors to the [Papertrail](https://papertrailapp.com) hosted logging service via UDP. |
-| [PostgreSQL](https://github.com/gemnasium/logrus-postgresql-hook) | Send logs to [PostgreSQL](http://postgresql.org) |
-| [Promrus](https://github.com/weaveworks/promrus) | Expose number of log messages as [Prometheus](https://prometheus.io/) metrics |
-| [Pushover](https://github.com/toorop/logrus_pushover) | Send error via [Pushover](https://pushover.net) |
-| [Raygun](https://github.com/squirkle/logrus-raygun-hook) | Hook for logging to [Raygun.io](http://raygun.io/) |
-| [Redis-Hook](https://github.com/rogierlommers/logrus-redis-hook) | Hook for logging to a ELK stack (through Redis) |
-| [Rollrus](https://github.com/heroku/rollrus) | Hook for sending errors to rollbar |
-| [Scribe](https://github.com/sagar8192/logrus-scribe-hook) | Hook for logging to [Scribe](https://github.com/facebookarchive/scribe)|
-| [Sentry](https://github.com/evalphobia/logrus_sentry) | Send errors to the Sentry error logging and aggregation service. |
-| [Slackrus](https://github.com/johntdyer/slackrus) | Hook for Slack chat. |
-| [Stackdriver](https://github.com/knq/sdhook) | Hook for logging to [Google Stackdriver](https://cloud.google.com/logging/) |
-| [Sumorus](https://github.com/doublefree/sumorus) | Hook for logging to [SumoLogic](https://www.sumologic.com/)|
-| [Syslog](https://github.com/sirupsen/logrus/blob/master/hooks/syslog/syslog.go) | Send errors to remote syslog server. Uses standard library `log/syslog` behind the scenes. |
-| [Syslog TLS](https://github.com/shinji62/logrus-syslog-ng) | Send errors to remote syslog server with TLS support. |
-| [Telegram](https://github.com/rossmcdonald/telegram_hook) | Hook for logging errors to [Telegram](https://telegram.org/) |
-| [TraceView](https://github.com/evalphobia/logrus_appneta) | Hook for logging to [AppNeta TraceView](https://www.appneta.com/products/traceview/) |
-| [Typetalk](https://github.com/dragon3/logrus-typetalk-hook) | Hook for logging to [Typetalk](https://www.typetalk.in/) |
-| [logz.io](https://github.com/ripcurld00d/logrus-logzio-hook) | Hook for logging to [logz.io](https://logz.io), a Log as a Service using Logstash |
-| [SQS-Hook](https://github.com/tsarpaul/logrus_sqs) | Hook for logging to [Amazon Simple Queue Service (SQS)](https://aws.amazon.com/sqs/) |
 
 #### Level logging
 
@@ -372,6 +320,8 @@ The built-in logging formatters are:
     field to `true`.  To force no colored output even if there is a TTY  set the
     `DisableColors` field to `true`. For Windows, see
     [github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
+  * When colors are enabled, levels are truncated to 4 characters by default. To disable
+    truncation set the `DisableLevelTruncation` field to `true`.
   * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
 * `logrus.JSONFormatter`. Logs fields as JSON.
   * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
@@ -495,7 +445,7 @@ logrus.RegisterExitHandler(handler)
 
 #### Thread safety
 
-By default Logger is protected by mutex for concurrent writes, this mutex is invoked when calling hooks and writing logs.
+By default, Logger is protected by a mutex for concurrent writes. The mutex is held when calling hooks and writing logs.
 If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
 
 Situation when locking is not needed includes:

vendor/github.com/sirupsen/logrus/entry.go

@@ -48,7 +48,7 @@ type Entry struct {
 func NewEntry(logger *Logger) *Entry {
 	return &Entry{
 		Logger: logger,
-		// Default is three fields, give a little extra room
+		// Default is five fields, give a little extra room
 		Data: make(Fields, 5),
 	}
 }
@@ -83,14 +83,28 @@ func (entry *Entry) WithFields(fields Fields) *Entry {
 	for k, v := range fields {
 		data[k] = v
 	}
-	return &Entry{Logger: entry.Logger, Data: data}
+	return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time}
+}
+
+// Overrides the time of the Entry.
+func (entry *Entry) WithTime(t time.Time) *Entry {
+	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t}
 }
 
 // This function is not declared with a pointer value because otherwise
 // race conditions will occur when using multiple goroutines
 func (entry Entry) log(level Level, msg string) {
 	var buffer *bytes.Buffer
-	entry.Time = time.Now()
+
+	// Default to now, but allow users to override if they want.
+	//
+	// We don't have to worry about polluting future calls to Entry#log()
+	// with this assignment because this function is declared with a
+	// non-pointer receiver.
+	if entry.Time.IsZero() {
+		entry.Time = time.Now()
+	}
+
 	entry.Level = level
 	entry.Message = msg
 
@@ -113,12 +127,10 @@ func (entry Entry) log(level Level, msg string) {
 	}
 }
 
-// This function is not declared with a pointer value because otherwise
+func (entry *Entry) fireHooks() {
-// race conditions will occur when using multiple goroutines
-func (entry Entry) fireHooks() {
 	entry.Logger.mu.Lock()
 	defer entry.Logger.mu.Unlock()
-	err := entry.Logger.Hooks.Fire(entry.Level, &entry)
+	err := entry.Logger.Hooks.Fire(entry.Level, entry)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
 	}

vendor/github.com/sirupsen/logrus/exported.go

@@ -2,6 +2,7 @@ package logrus
 
 import (
 	"io"
+	"time"
 )
 
 var (
@@ -15,9 +16,7 @@ func StandardLogger() *Logger {
 
 // SetOutput sets the standard logger output.
 func SetOutput(out io.Writer) {
-	std.mu.Lock()
+	std.SetOutput(out)
-	defer std.mu.Unlock()
-	std.Out = out
 }
 
 // SetFormatter sets the standard logger formatter.
@@ -72,6 +71,15 @@ func WithFields(fields Fields) *Entry {
 	return std.WithFields(fields)
 }
 
+// WithTime creats an entry from the standard logger and overrides the time of
+// logs generated with it.
+//
+// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
+// or Panic on the Entry it returns.
+func WithTime(t time.Time) *Entry {
+	return std.WithTime(t)
+}
+
 // Debug logs a message at level Debug on the standard logger.
 func Debug(args ...interface{}) {
 	std.Debug(args...)
@@ -107,7 +115,7 @@ func Panic(args ...interface{}) {
 	std.Panic(args...)
 }
 
-// Fatal logs a message at level Fatal on the standard logger.
+// Fatal logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
 func Fatal(args ...interface{}) {
 	std.Fatal(args...)
 }
@@ -147,7 +155,7 @@ func Panicf(format string, args ...interface{}) {
 	std.Panicf(format, args...)
 }
 
-// Fatalf logs a message at level Fatal on the standard logger.
+// Fatalf logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
 func Fatalf(format string, args ...interface{}) {
 	std.Fatalf(format, args...)
 }
@@ -187,7 +195,7 @@ func Panicln(args ...interface{}) {
 	std.Panicln(args...)
 }
 
-// Fatalln logs a message at level Fatal on the standard logger.
+// Fatalln logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
 func Fatalln(args ...interface{}) {
 	std.Fatalln(args...)
 }

vendor/github.com/sirupsen/logrus/formatter.go

@@ -30,16 +30,22 @@ type Formatter interface {
 //
 // It's not exported because it's still using Data in an opinionated way. It's to
 // avoid code duplication between the two default formatters.
-func prefixFieldClashes(data Fields) {
+func prefixFieldClashes(data Fields, fieldMap FieldMap) {
-	if t, ok := data["time"]; ok {
+	timeKey := fieldMap.resolve(FieldKeyTime)
-		data["fields.time"] = t
+	if t, ok := data[timeKey]; ok {
+		data["fields."+timeKey] = t
+		delete(data, timeKey)
 	}
 
-	if m, ok := data["msg"]; ok {
+	msgKey := fieldMap.resolve(FieldKeyMsg)
-		data["fields.msg"] = m
+	if m, ok := data[msgKey]; ok {
+		data["fields."+msgKey] = m
+		delete(data, msgKey)
 	}
 
-	if l, ok := data["level"]; ok {
+	levelKey := fieldMap.resolve(FieldKeyLevel)
-		data["fields.level"] = l
+	if l, ok := data[levelKey]; ok {
+		data["fields."+levelKey] = l
+		delete(data, levelKey)
 	}
 }

vendor/github.com/sirupsen/logrus/json_formatter.go

@@ -33,6 +33,9 @@ type JSONFormatter struct {
 	// DisableTimestamp allows disabling automatic timestamps in output
 	DisableTimestamp bool
 
+	// DataKey allows users to put all the log entry parameters into a nested dictionary at a given key.
+	DataKey string
+
 	// FieldMap allows users to customize the names of keys for default fields.
 	// As an example:
 	// formatter := &JSONFormatter{
@@ -58,7 +61,14 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 			data[k] = v
 		}
 	}
-	prefixFieldClashes(data)
+
+	if f.DataKey != "" {
+		newData := make(Fields, 4)
+		newData[f.DataKey] = data
+		data = newData
+	}
+
+	prefixFieldClashes(data, f.FieldMap)
 
 	timestampFormat := f.TimestampFormat
 	if timestampFormat == "" {

vendor/github.com/sirupsen/logrus/logger.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"sync"
 	"sync/atomic"
+	"time"
 )
 
 type Logger struct {
@@ -88,7 +89,7 @@ func (logger *Logger) releaseEntry(entry *Entry) {
 }
 
 // Adds a field to the log entry, note that it doesn't log until you call
-// Debug, Print, Info, Warn, Fatal or Panic. It only creates a log entry.
+// Debug, Print, Info, Warn, Error, Fatal or Panic. It only creates a log entry.
 // If you want multiple fields, use `WithFields`.
 func (logger *Logger) WithField(key string, value interface{}) *Entry {
 	entry := logger.newEntry()
@@ -112,6 +113,13 @@ func (logger *Logger) WithError(err error) *Entry {
 	return entry.WithError(err)
 }
 
+// Overrides the time of the log entry.
+func (logger *Logger) WithTime(t time.Time) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithTime(t)
+}
+
 func (logger *Logger) Debugf(format string, args ...interface{}) {
 	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
@@ -316,6 +324,12 @@ func (logger *Logger) SetLevel(level Level) {
 	atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
 }
 
+func (logger *Logger) SetOutput(out io.Writer) {
+	logger.mu.Lock()
+	defer logger.mu.Unlock()
+	logger.Out = out
+}
+
 func (logger *Logger) AddHook(hook Hook) {
 	logger.mu.Lock()
 	defer logger.mu.Unlock()

vendor/github.com/sirupsen/logrus/text_formatter.go

@@ -20,6 +20,7 @@ const (
 
 var (
 	baseTimestamp time.Time
+	emptyFieldMap FieldMap
 )
 
 func init() {
@@ -50,12 +51,24 @@ type TextFormatter struct {
 	// be desired.
 	DisableSorting bool
 
+	// Disables the truncation of the level text to 4 characters.
+	DisableLevelTruncation bool
+
 	// QuoteEmptyFields will wrap empty fields in quotes if true
 	QuoteEmptyFields bool
 
 	// Whether the logger's out is to a terminal
 	isTerminal bool
 
+	// FieldMap allows users to customize the names of keys for default fields.
+	// As an example:
+	// formatter := &TextFormatter{
+	//     FieldMap: FieldMap{
+	//         FieldKeyTime:  "@timestamp",
+	//         FieldKeyLevel: "@level",
+	//         FieldKeyMsg:   "@message"}}
+	FieldMap FieldMap
+
 	sync.Once
 }
 
@@ -67,7 +80,8 @@ func (f *TextFormatter) init(entry *Entry) {
 
 // Format renders a single log entry
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
-	var b *bytes.Buffer
+	prefixFieldClashes(entry.Data, f.FieldMap)
+
 	keys := make([]string, 0, len(entry.Data))
 	for k := range entry.Data {
 		keys = append(keys, k)
@@ -76,14 +90,14 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	if !f.DisableSorting {
 		sort.Strings(keys)
 	}
+
+	var b *bytes.Buffer
 	if entry.Buffer != nil {
 		b = entry.Buffer
 	} else {
 		b = &bytes.Buffer{}
 	}
 
-	prefixFieldClashes(entry.Data)
-
 	f.Do(func() { f.init(entry) })
 
 	isColored := (f.ForceColors || f.isTerminal) && !f.DisableColors
@@ -96,11 +110,11 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 		f.printColored(b, entry, keys, timestampFormat)
 	} else {
 		if !f.DisableTimestamp {
-			f.appendKeyValue(b, "time", entry.Time.Format(timestampFormat))
+			f.appendKeyValue(b, f.FieldMap.resolve(FieldKeyTime), entry.Time.Format(timestampFormat))
 		}
-		f.appendKeyValue(b, "level", entry.Level.String())
+		f.appendKeyValue(b, f.FieldMap.resolve(FieldKeyLevel), entry.Level.String())
 		if entry.Message != "" {
-			f.appendKeyValue(b, "msg", entry.Message)
+			f.appendKeyValue(b, f.FieldMap.resolve(FieldKeyMsg), entry.Message)
 		}
 		for _, key := range keys {
 			f.appendKeyValue(b, key, entry.Data[key])
@@ -124,7 +138,10 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 		levelColor = blue
 	}
 
-	levelText := strings.ToUpper(entry.Level.String())[0:4]
+	levelText := strings.ToUpper(entry.Level.String())
+	if !f.DisableLevelTruncation {
+		levelText = levelText[0:4]
+	}
 
 	if f.DisableTimestamp {
 		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m %-44s ", levelColor, levelText, entry.Message)

vendor/github.com/spf13/jwalterweatherman/README.md

@@ -18,7 +18,7 @@ provides a few advantages over using the standard log library alone.
 I really wanted a very straightforward library that could seamlessly do
 the following things.
 
-1. Replace all the println, printf, etc statements thought my code with
+1. Replace all the println, printf, etc statements thoughout my code with
    something more useful
 2. Allow the user to easily control what levels are printed to stdout
 3. Allow the user to easily control what levels are logged

vendor/github.com/spf13/pflag/bytes.go

@@ -1,6 +1,7 @@
 package pflag
 
 import (
+	"encoding/base64"
 	"encoding/hex"
 	"fmt"
 	"strings"
@@ -9,10 +10,12 @@ import (
 // BytesHex adapts []byte for use as a flag. Value of flag is HEX encoded
 type bytesHexValue []byte
 
+// String implements pflag.Value.String.
 func (bytesHex bytesHexValue) String() string {
 	return fmt.Sprintf("%X", []byte(bytesHex))
 }
 
+// Set implements pflag.Value.Set.
 func (bytesHex *bytesHexValue) Set(value string) error {
 	bin, err := hex.DecodeString(strings.TrimSpace(value))
 
@@ -25,6 +28,7 @@ func (bytesHex *bytesHexValue) Set(value string) error {
 	return nil
 }
 
+// Type implements pflag.Value.Type.
 func (*bytesHexValue) Type() string {
 	return "bytesHex"
 }
@@ -103,3 +107,103 @@ func BytesHex(name string, value []byte, usage string) *[]byte {
 func BytesHexP(name, shorthand string, value []byte, usage string) *[]byte {
 	return CommandLine.BytesHexP(name, shorthand, value, usage)
 }
+
+// BytesBase64 adapts []byte for use as a flag. Value of flag is Base64 encoded
+type bytesBase64Value []byte
+
+// String implements pflag.Value.String.
+func (bytesBase64 bytesBase64Value) String() string {
+	return base64.StdEncoding.EncodeToString([]byte(bytesBase64))
+}
+
+// Set implements pflag.Value.Set.
+func (bytesBase64 *bytesBase64Value) Set(value string) error {
+	bin, err := base64.StdEncoding.DecodeString(strings.TrimSpace(value))
+
+	if err != nil {
+		return err
+	}
+
+	*bytesBase64 = bin
+
+	return nil
+}
+
+// Type implements pflag.Value.Type.
+func (*bytesBase64Value) Type() string {
+	return "bytesBase64"
+}
+
+func newBytesBase64Value(val []byte, p *[]byte) *bytesBase64Value {
+	*p = val
+	return (*bytesBase64Value)(p)
+}
+
+func bytesBase64ValueConv(sval string) (interface{}, error) {
+
+	bin, err := base64.StdEncoding.DecodeString(sval)
+	if err == nil {
+		return bin, nil
+	}
+
+	return nil, fmt.Errorf("invalid string being converted to Bytes: %s %s", sval, err)
+}
+
+// GetBytesBase64 return the []byte value of a flag with the given name
+func (f *FlagSet) GetBytesBase64(name string) ([]byte, error) {
+	val, err := f.getFlagType(name, "bytesBase64", bytesBase64ValueConv)
+
+	if err != nil {
+		return []byte{}, err
+	}
+
+	return val.([]byte), nil
+}
+
+// BytesBase64Var defines an []byte flag with specified name, default value, and usage string.
+// The argument p points to an []byte variable in which to store the value of the flag.
+func (f *FlagSet) BytesBase64Var(p *[]byte, name string, value []byte, usage string) {
+	f.VarP(newBytesBase64Value(value, p), name, "", usage)
+}
+
+// BytesBase64VarP is like BytesBase64Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BytesBase64VarP(p *[]byte, name, shorthand string, value []byte, usage string) {
+	f.VarP(newBytesBase64Value(value, p), name, shorthand, usage)
+}
+
+// BytesBase64Var defines an []byte flag with specified name, default value, and usage string.
+// The argument p points to an []byte variable in which to store the value of the flag.
+func BytesBase64Var(p *[]byte, name string, value []byte, usage string) {
+	CommandLine.VarP(newBytesBase64Value(value, p), name, "", usage)
+}
+
+// BytesBase64VarP is like BytesBase64Var, but accepts a shorthand letter that can be used after a single dash.
+func BytesBase64VarP(p *[]byte, name, shorthand string, value []byte, usage string) {
+	CommandLine.VarP(newBytesBase64Value(value, p), name, shorthand, usage)
+}
+
+// BytesBase64 defines an []byte flag with specified name, default value, and usage string.
+// The return value is the address of an []byte variable that stores the value of the flag.
+func (f *FlagSet) BytesBase64(name string, value []byte, usage string) *[]byte {
+	p := new([]byte)
+	f.BytesBase64VarP(p, name, "", value, usage)
+	return p
+}
+
+// BytesBase64P is like BytesBase64, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BytesBase64P(name, shorthand string, value []byte, usage string) *[]byte {
+	p := new([]byte)
+	f.BytesBase64VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// BytesBase64 defines an []byte flag with specified name, default value, and usage string.
+// The return value is the address of an []byte variable that stores the value of the flag.
+func BytesBase64(name string, value []byte, usage string) *[]byte {
+	return CommandLine.BytesBase64P(name, "", value, usage)
+}
+
+// BytesBase64P is like BytesBase64, but accepts a shorthand letter that can be used after a single dash.
+func BytesBase64P(name, shorthand string, value []byte, usage string) *[]byte {
+	return CommandLine.BytesBase64P(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/flag.go

@@ -990,11 +990,12 @@ func (f *FlagSet) parseLongArg(s string, args []string, fn parseFunc) (a []strin
 }
 
 func (f *FlagSet) parseSingleShortArg(shorthands string, args []string, fn parseFunc) (outShorts string, outArgs []string, err error) {
+	outArgs = args
+
 	if strings.HasPrefix(shorthands, "test.") {
 		return
 	}
 
-	outArgs = args
 	outShorts = shorthands[1:]
 	c := shorthands[0]
 

vendor/go.uber.org/zap/CHANGELOG.md

@@ -1,12 +1,18 @@
 # Changelog
 
+## v1.9.1 (06 Aug 2018)
+
+Bugfixes:
+
+* [#614][]: MapObjectEncoder should not ignore empty slices.
+
 ## v1.9.0 (19 Jul 2018)
 
 Enhancements:
 * [#602][]: Reduce number of allocations when logging with reflection.
 * [#572][], [#606][]: Expose a registry for third-party logging sinks.
 
-Thanks to @nfarah86, @AlekSi, @JeanMertz, @phillippgille, @etsangsplk, and
+Thanks to @nfarah86, @AlekSi, @JeanMertz, @philippgille, @etsangsplk, and
 @dimroc for their contributions to this release.
 
 ## v1.8.0 (13 Apr 2018)
@@ -296,3 +302,4 @@ upgrade to the upcoming stable release.
 [#602]: https://github.com/uber-go/zap/pull/602
 [#572]: https://github.com/uber-go/zap/pull/572
 [#606]: https://github.com/uber-go/zap/pull/606
+[#614]: https://github.com/uber-go/zap/pull/614

vendor/go.uber.org/zap/zapcore/memory_encoder.go

@@ -43,7 +43,7 @@ func NewMapObjectEncoder() *MapObjectEncoder {
 
 // AddArray implements ObjectEncoder.
 func (m *MapObjectEncoder) AddArray(key string, v ArrayMarshaler) error {
-	arr := &sliceArrayEncoder{}
+	arr := &sliceArrayEncoder{elems: make([]interface{}, 0)}
 	err := v.MarshalLogArray(arr)
 	m.cur[key] = arr.elems
 	return err

vendor/golang.org/x/crypto/acme/acme.go

@@ -39,8 +39,18 @@ import (
 	"time"
 )
 
-// LetsEncryptURL is the Directory endpoint of Let's Encrypt CA.
+const (
-const LetsEncryptURL = "https://acme-v01.api.letsencrypt.org/directory"
+	// LetsEncryptURL is the Directory endpoint of Let's Encrypt CA.
+	LetsEncryptURL = "https://acme-v01.api.letsencrypt.org/directory"
+
+	// ALPNProto is the ALPN protocol name used by a CA server when validating
+	// tls-alpn-01 challenges.
+	//
+	// Package users must ensure their servers can negotiate the ACME ALPN in
+	// order for tls-alpn-01 challenge verifications to succeed.
+	// See the crypto/tls package's Config.NextProtos field.
+	ALPNProto = "acme-tls/1"
+)
 
 // idPeACMEIdentifierV1 is the OID for the ACME extension for the TLS-ALPN challenge.
 var idPeACMEIdentifierV1 = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 1, 30, 1}
@@ -645,8 +655,9 @@ func (c *Client) doReg(ctx context.Context, url string, typ string, acct *Accoun
 		req.Agreement = acct.AgreedTerms
 	}
 	res, err := c.post(ctx, c.Key, url, req, wantStatus(
-		http.StatusOK,      // updates and deletes
+		http.StatusOK,       // updates and deletes
-		http.StatusCreated, // new account creation
+		http.StatusCreated,  // new account creation
+		http.StatusAccepted, // Let's Encrypt divergent implementation
 	))
 	if err != nil {
 		return nil, err

vendor/golang.org/x/crypto/acme/autocert/autocert.go

@@ -44,7 +44,7 @@ var createCertRetryAfter = time.Minute
 var pseudoRand *lockedMathRand
 
 func init() {
-	src := mathrand.NewSource(timeNow().UnixNano())
+	src := mathrand.NewSource(time.Now().UnixNano())
 	pseudoRand = &lockedMathRand{rnd: mathrand.New(src)}
 }
 
@@ -81,9 +81,9 @@ func defaultHostPolicy(context.Context, string) error {
 }
 
 // Manager is a stateful certificate manager built on top of acme.Client.
-// It obtains and refreshes certificates automatically using "tls-sni-01",
+// It obtains and refreshes certificates automatically using "tls-alpn-01",
-// "tls-sni-02" and "http-01" challenge types, as well as providing them
+// "tls-sni-01", "tls-sni-02" and "http-01" challenge types,
-// to a TLS server via tls.Config.
+// as well as providing them to a TLS server via tls.Config.
 //
 // You must specify a cache implementation, such as DirCache,
 // to reuse obtained certificates across program restarts.
@@ -177,18 +177,22 @@ type Manager struct {
 	// to be provisioned.
 	// The entries are stored for the duration of the authorization flow.
 	httpTokens map[string][]byte
-	// certTokens contains temporary certificates for tls-sni challenges
+	// certTokens contains temporary certificates for tls-sni and tls-alpn challenges
 	// and is keyed by token domain name, which matches server name of ClientHello.
-	// Keys always have ".acme.invalid" suffix.
+	// Keys always have ".acme.invalid" suffix for tls-sni. Otherwise, they are domain names
+	// for tls-alpn.
 	// The entries are stored for the duration of the authorization flow.
 	certTokens map[string]*tls.Certificate
+	// nowFunc, if not nil, returns the current time. This may be set for
+	// testing purposes.
+	nowFunc func() time.Time
 }
 
 // certKey is the key by which certificates are tracked in state, renewal and cache.
 type certKey struct {
 	domain  string // without trailing dot
 	isRSA   bool   // RSA cert for legacy clients (as opposed to default ECDSA)
-	isToken bool   // tls-sni challenge token cert; key type is undefined regardless of isRSA
+	isToken bool   // tls-based challenge token cert; key type is undefined regardless of isRSA
 }
 
 func (c certKey) String() string {
@@ -201,14 +205,32 @@ func (c certKey) String() string {
 	return c.domain
 }
 
+// TLSConfig creates a new TLS config suitable for net/http.Server servers,
+// supporting HTTP/2 and the tls-alpn-01 ACME challenge type.
+func (m *Manager) TLSConfig() *tls.Config {
+	return &tls.Config{
+		GetCertificate: m.GetCertificate,
+		NextProtos: []string{
+			"h2", "http/1.1", // enable HTTP/2
+			acme.ALPNProto, // enable tls-alpn ACME challenges
+		},
+	}
+}
+
 // GetCertificate implements the tls.Config.GetCertificate hook.
 // It provides a TLS certificate for hello.ServerName host, including answering
-// *.acme.invalid (TLS-SNI) challenges. All other fields of hello are ignored.
+// tls-alpn-01 and *.acme.invalid (tls-sni-01 and tls-sni-02) challenges.
+// All other fields of hello are ignored.
 //
 // If m.HostPolicy is non-nil, GetCertificate calls the policy before requesting
 // a new cert. A non-nil error returned from m.HostPolicy halts TLS negotiation.
 // The error is propagated back to the caller of GetCertificate and is user-visible.
 // This does not affect cached certs. See HostPolicy field description for more details.
+//
+// If GetCertificate is used directly, instead of via Manager.TLSConfig, package users will
+// also have to add acme.ALPNProto to NextProtos for tls-alpn-01, or use HTTPHandler
+// for http-01. (The tls-sni-* challenges have been deprecated by popular ACME providers
+// due to security issues in the ecosystem.)
 func (m *Manager) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
 	if m.Prompt == nil {
 		return nil, errors.New("acme/autocert: Manager.Prompt not set")
@@ -230,10 +252,13 @@ func (m *Manager) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate,
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
 	defer cancel()
 
-	// check whether this is a token cert requested for TLS-SNI challenge
+	// Check whether this is a token cert requested for TLS-SNI or TLS-ALPN challenge.
-	if strings.HasSuffix(name, ".acme.invalid") {
+	if wantsTokenCert(hello) {
 		m.tokensMu.RLock()
 		defer m.tokensMu.RUnlock()
+		// It's ok to use the same token cert key for both tls-sni and tls-alpn
+		// because there's always at most 1 token cert per on-going domain authorization.
+		// See m.verify for details.
 		if cert := m.certTokens[name]; cert != nil {
 			return cert, nil
 		}
@@ -269,6 +294,17 @@ func (m *Manager) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate,
 	return cert, nil
 }
 
+// wantsTokenCert reports whether a TLS request with SNI is made by a CA server
+// for a challenge verification.
+func wantsTokenCert(hello *tls.ClientHelloInfo) bool {
+	// tls-alpn-01
+	if len(hello.SupportedProtos) == 1 && hello.SupportedProtos[0] == acme.ALPNProto {
+		return true
+	}
+	// tls-sni-xx
+	return strings.HasSuffix(hello.ServerName, ".acme.invalid")
+}
+
 func supportsECDSA(hello *tls.ClientHelloInfo) bool {
 	// The "signature_algorithms" extension, if present, limits the key exchange
 	// algorithms allowed by the cipher suites. See RFC 5246, section 7.4.1.4.1.
@@ -328,8 +364,8 @@ func supportsECDSA(hello *tls.ClientHelloInfo) bool {
 // Because the fallback handler is run with unencrypted port 80 requests,
 // the fallback should not serve TLS-only requests.
 //
-// If HTTPHandler is never called, the Manager will only use TLS SNI
+// If HTTPHandler is never called, the Manager will only use the "tls-alpn-01"
-// challenges for domain verification.
+// challenge for domain verification.
 func (m *Manager) HTTPHandler(fallback http.Handler) http.Handler {
 	m.tokensMu.Lock()
 	defer m.tokensMu.Unlock()
@@ -447,7 +483,7 @@ func (m *Manager) cacheGet(ctx context.Context, ck certKey) (*tls.Certificate, e
 	}
 
 	// verify and create TLS cert
-	leaf, err := validCert(ck, pubDER, privKey)
+	leaf, err := validCert(ck, pubDER, privKey, m.now())
 	if err != nil {
 		return nil, ErrCacheMiss
 	}
@@ -542,7 +578,7 @@ func (m *Manager) createCert(ctx context.Context, ck certKey) (*tls.Certificate,
 			if !ok {
 				return
 			}
-			if _, err := validCert(ck, s.cert, s.key); err == nil {
+			if _, err := validCert(ck, s.cert, s.key, m.now()); err == nil {
 				return
 			}
 			delete(m.state, ck)
@@ -611,7 +647,7 @@ func (m *Manager) authorizedCert(ctx context.Context, key crypto.Signer, ck cert
 	if err != nil {
 		return nil, nil, err
 	}
-	leaf, err = validCert(ck, der, key)
+	leaf, err = validCert(ck, der, key, m.now())
 	if err != nil {
 		return nil, nil, err
 	}
@@ -635,7 +671,7 @@ func (m *Manager) revokePendingAuthz(ctx context.Context, uri []string) {
 func (m *Manager) verify(ctx context.Context, client *acme.Client, domain string) error {
 	// The list of challenge types we'll try to fulfill
 	// in this specific order.
-	challengeTypes := []string{"tls-sni-02", "tls-sni-01"}
+	challengeTypes := []string{"tls-alpn-01", "tls-sni-02", "tls-sni-01"}
 	m.tokensMu.RLock()
 	if m.tryHTTP01 {
 		challengeTypes = append(challengeTypes, "http-01")
@@ -691,7 +727,7 @@ func (m *Manager) verify(ctx context.Context, client *acme.Client, domain string
 			}
 			return errors.New(errorMsg)
 		}
-		cleanup, err := m.fulfill(ctx, client, chal)
+		cleanup, err := m.fulfill(ctx, client, chal, domain)
 		if err != nil {
 			errs[chal] = err
 			continue
@@ -714,8 +750,15 @@ func (m *Manager) verify(ctx context.Context, client *acme.Client, domain string
 
 // fulfill provisions a response to the challenge chal.
 // The cleanup is non-nil only if provisioning succeeded.
-func (m *Manager) fulfill(ctx context.Context, client *acme.Client, chal *acme.Challenge) (cleanup func(), err error) {
+func (m *Manager) fulfill(ctx context.Context, client *acme.Client, chal *acme.Challenge, domain string) (cleanup func(), err error) {
 	switch chal.Type {
+	case "tls-alpn-01":
+		cert, err := client.TLSALPN01ChallengeCert(chal.Token, domain)
+		if err != nil {
+			return nil, err
+		}
+		m.putCertToken(ctx, domain, &cert)
+		return func() { go m.deleteCertToken(domain) }, nil
 	case "tls-sni-01":
 		cert, name, err := client.TLSSNI01ChallengeCert(chal.Token)
 		if err != nil {
@@ -948,6 +991,13 @@ func (m *Manager) renewBefore() time.Duration {
 	return 720 * time.Hour // 30 days
 }
 
+func (m *Manager) now() time.Time {
+	if m.nowFunc != nil {
+		return m.nowFunc()
+	}
+	return time.Now()
+}
+
 // certState is ready when its mutex is unlocked for reading.
 type certState struct {
 	sync.RWMutex
@@ -1014,7 +1064,7 @@ func parsePrivateKey(der []byte) (crypto.Signer, error) {
 // are valid. It doesn't do any revocation checking.
 //
 // The returned value is the verified leaf cert.
-func validCert(ck certKey, der [][]byte, key crypto.Signer) (leaf *x509.Certificate, err error) {
+func validCert(ck certKey, der [][]byte, key crypto.Signer, now time.Time) (leaf *x509.Certificate, err error) {
 	// parse public part(s)
 	var n int
 	for _, b := range der {
@@ -1031,7 +1081,6 @@ func validCert(ck certKey, der [][]byte, key crypto.Signer) (leaf *x509.Certific
 	}
 	// verify the leaf is not expired and matches the domain name
 	leaf = x509Cert[0]
-	now := timeNow()
 	if now.Before(leaf.NotBefore) {
 		return nil, errors.New("acme/autocert: certificate is not valid yet")
 	}
@@ -1085,8 +1134,6 @@ func (r *lockedMathRand) int63n(max int64) int64 {
 
 // For easier testing.
 var (
-	timeNow = time.Now
-
 	// Called when a state is removed.
 	testDidRemoveState = func(certKey) {}
 )

vendor/golang.org/x/crypto/acme/autocert/listener.go

@@ -72,11 +72,8 @@ func NewListener(domains ...string) net.Listener {
 // the Manager m's Prompt, Cache, HostPolicy, and other desired options.
 func (m *Manager) Listener() net.Listener {
 	ln := &listener{
-		m: m,
+		m:    m,
-		conf: &tls.Config{
+		conf: m.TLSConfig(),
-			GetCertificate: m.GetCertificate,           // bonus: panic on nil m
-			NextProtos:     []string{"h2", "http/1.1"}, // Enable HTTP/2
-		},
 	}
 	ln.tcpListener, ln.tcpListenErr = net.Listen("tcp", ":443")
 	return ln

vendor/golang.org/x/crypto/acme/autocert/renewal.go

@@ -128,7 +128,7 @@ func (dr *domainRenewal) do(ctx context.Context) (time.Duration, error) {
 }
 
 func (dr *domainRenewal) next(expiry time.Time) time.Duration {
-	d := expiry.Sub(timeNow()) - dr.m.renewBefore()
+	d := expiry.Sub(dr.m.now()) - dr.m.renewBefore()
 	// add a bit of randomness to renew deadline
 	n := pseudoRand.int63n(int64(renewJitter))
 	d -= time.Duration(n)

vendor/golang.org/x/net/html/parse.go

@@ -209,27 +209,6 @@ loop:
 	p.oe = p.oe[:i+1]
 }
 
-// generateAllImpliedEndTags pops nodes off the stack of open elements as long as
-// the top node has a tag name of caption, colgroup, dd, div, dt, li, optgroup, option, p, rb,
-// rp, rt, rtc, span, tbody, td, tfoot, th, thead or tr.
-func (p *parser) generateAllImpliedEndTags() {
-	var i int
-	for i = len(p.oe) - 1; i >= 0; i-- {
-		n := p.oe[i]
-		if n.Type == ElementNode {
-			switch n.DataAtom {
-			// TODO: remove this divergence from the HTML5 spec
-			case a.Caption, a.Colgroup, a.Dd, a.Div, a.Dt, a.Li, a.Optgroup, a.Option, a.P, a.Rb,
-				a.Rp, a.Rt, a.Rtc, a.Span, a.Tbody, a.Td, a.Tfoot, a.Th, a.Thead, a.Tr:
-				continue
-			}
-		}
-		break
-	}
-
-	p.oe = p.oe[:i+1]
-}
-
 // addChild adds a child node n to the top element, and pushes n onto the stack
 // of open elements if it is an element node.
 func (p *parser) addChild(n *Node) {
@@ -679,11 +658,16 @@ func inHeadIM(p *parser) bool {
 			if !p.oe.contains(a.Template) {
 				return true
 			}
-			p.generateAllImpliedEndTags()
+			// TODO: remove this divergence from the HTML5 spec.
-			if n := p.oe.top(); n.DataAtom != a.Template {
+			//
-				return true
+			// See https://bugs.chromium.org/p/chromium/issues/detail?id=829668
+			p.generateImpliedEndTags()
+			for i := len(p.oe) - 1; i >= 0; i-- {
+				if n := p.oe[i]; n.Namespace == "" && n.DataAtom == a.Template {
+					p.oe = p.oe[:i]
+					break
+				}
 			}
-			p.popUntil(defaultScope, a.Template)
 			p.clearActiveFormattingElements()
 			p.templateStack.pop()
 			p.resetInsertionMode()
@@ -1074,13 +1058,7 @@ func inBodyIM(p *parser) bool {
 				p.acknowledgeSelfClosingTag()
 			}
 			return true
-		case a.Frame:
+		case a.Caption, a.Col, a.Colgroup, a.Frame, a.Head, a.Tbody, a.Td, a.Tfoot, a.Th, a.Thead, a.Tr:
-			// TODO: remove this divergence from the HTML5 spec.
-			if p.oe.contains(a.Template) {
-				p.addElement()
-				return true
-			}
-		case a.Caption, a.Col, a.Colgroup, a.Head, a.Tbody, a.Td, a.Tfoot, a.Th, a.Thead, a.Tr:
 			// Ignore the token.
 		default:
 			p.reconstructActiveFormattingElements()
@@ -1351,9 +1329,6 @@ func textIM(p *parser) bool {
 // Section 12.2.6.4.9.
 func inTableIM(p *parser) bool {
 	switch p.tok.Type {
-	case ErrorToken:
-		// Stop parsing.
-		return true
 	case TextToken:
 		p.tok.Data = strings.Replace(p.tok.Data, "\x00", "", -1)
 		switch p.oe.top().DataAtom {
@@ -1448,6 +1423,8 @@ func inTableIM(p *parser) bool {
 	case DoctypeToken:
 		// Ignore the token.
 		return true
+	case ErrorToken:
+		return inBodyIM(p)
 	}
 
 	p.fosterParenting = true
@@ -1550,6 +1527,8 @@ func inColumnGroupIM(p *parser) bool {
 		case a.Template:
 			return inHeadIM(p)
 		}
+	case ErrorToken:
+		return inBodyIM(p)
 	}
 	if p.oe.top().DataAtom != a.Colgroup {
 		return true
@@ -1714,9 +1693,6 @@ func inCellIM(p *parser) bool {
 // Section 12.2.6.4.16.
 func inSelectIM(p *parser) bool {
 	switch p.tok.Type {
-	case ErrorToken:
-		// Stop parsing.
-		return true
 	case TextToken:
 		p.addText(strings.Replace(p.tok.Data, "\x00", "", -1))
 	case StartTagToken:
@@ -1780,6 +1756,8 @@ func inSelectIM(p *parser) bool {
 	case DoctypeToken:
 		// Ignore the token.
 		return true
+	case ErrorToken:
+		return inBodyIM(p)
 	}
 
 	return true
@@ -1846,15 +1824,26 @@ func inTemplateIM(p *parser) bool {
 			// Ignore the token.
 			return true
 		}
+	case ErrorToken:
+		if !p.oe.contains(a.Template) {
+			// Ignore the token.
+			return true
+		}
+		// TODO: remove this divergence from the HTML5 spec.
+		//
+		// See https://bugs.chromium.org/p/chromium/issues/detail?id=829668
+		p.generateImpliedEndTags()
+		for i := len(p.oe) - 1; i >= 0; i-- {
+			if n := p.oe[i]; n.Namespace == "" && n.DataAtom == a.Template {
+				p.oe = p.oe[:i]
+				break
+			}
+		}
+		p.clearActiveFormattingElements()
+		p.templateStack.pop()
+		p.resetInsertionMode()
+		return false
 	}
-	if !p.oe.contains(a.Template) {
-		// Ignore the token.
-		return true
-	}
-	p.popUntil(defaultScope, a.Template)
-	p.clearActiveFormattingElements()
-	p.templateStack.pop()
-	p.resetInsertionMode()
 	return false
 }
 
@@ -1928,11 +1917,6 @@ func inFramesetIM(p *parser) bool {
 			p.acknowledgeSelfClosingTag()
 		case a.Noframes:
 			return inHeadIM(p)
-		case a.Template:
-			// TODO: remove this divergence from the HTML5 spec.
-			//
-			// See https://bugs.chromium.org/p/chromium/issues/detail?id=829668
-			return inTemplateIM(p)
 		}
 	case EndTagToken:
 		switch p.tok.DataAtom {

vendor/golang.org/x/net/http2/headermap.go

@@ -7,15 +7,21 @@ package http2
 import (
 	"net/http"
 	"strings"
+	"sync"
 )
 
 var (
-	commonLowerHeader = map[string]string{} // Go-Canonical-Case -> lower-case
+	commonBuildOnce   sync.Once
-	commonCanonHeader = map[string]string{} // lower-case -> Go-Canonical-Case
+	commonLowerHeader map[string]string // Go-Canonical-Case -> lower-case
+	commonCanonHeader map[string]string // lower-case -> Go-Canonical-Case
 )
 
-func init() {
+func buildCommonHeaderMapsOnce() {
-	for _, v := range []string{
+	commonBuildOnce.Do(buildCommonHeaderMaps)
+}
+
+func buildCommonHeaderMaps() {
+	common := []string{
 		"accept",
 		"accept-charset",
 		"accept-encoding",
@@ -63,7 +69,10 @@ func init() {
 		"vary",
 		"via",
 		"www-authenticate",
-	} {
+	}
+	commonLowerHeader = make(map[string]string, len(common))
+	commonCanonHeader = make(map[string]string, len(common))
+	for _, v := range common {
 		chk := http.CanonicalHeaderKey(v)
 		commonLowerHeader[chk] = v
 		commonCanonHeader[v] = chk
@@ -71,6 +80,7 @@ func init() {
 }
 
 func lowerHeader(v string) string {
+	buildCommonHeaderMapsOnce()
 	if s, ok := commonLowerHeader[v]; ok {
 		return s
 	}

vendor/golang.org/x/net/http2/hpack/huffman.go

@@ -47,6 +47,7 @@ var ErrInvalidHuffman = errors.New("hpack: invalid Huffman-encoded data")
 // If maxLen is greater than 0, attempts to write more to buf than
 // maxLen bytes will return ErrStringLength.
 func huffmanDecode(buf *bytes.Buffer, maxLen int, v []byte) error {
+	rootHuffmanNode := getRootHuffmanNode()
 	n := rootHuffmanNode
 	// cur is the bit buffer that has not been fed into n.
 	// cbits is the number of low order bits in cur that are valid.
@@ -106,7 +107,7 @@ func huffmanDecode(buf *bytes.Buffer, maxLen int, v []byte) error {
 
 type node struct {
 	// children is non-nil for internal nodes
-	children []*node
+	children *[256]*node
 
 	// The following are only valid if children is nil:
 	codeLen uint8 // number of bits that led to the output of sym
@@ -114,22 +115,31 @@ type node struct {
 }
 
 func newInternalNode() *node {
-	return &node{children: make([]*node, 256)}
+	return &node{children: new([256]*node)}
 }
 
-var rootHuffmanNode = newInternalNode()
+var (
+	buildRootOnce       sync.Once
+	lazyRootHuffmanNode *node
+)
 
-func init() {
+func getRootHuffmanNode() *node {
+	buildRootOnce.Do(buildRootHuffmanNode)
+	return lazyRootHuffmanNode
+}
+
+func buildRootHuffmanNode() {
 	if len(huffmanCodes) != 256 {
 		panic("unexpected size")
 	}
+	lazyRootHuffmanNode = newInternalNode()
 	for i, code := range huffmanCodes {
 		addDecoderNode(byte(i), code, huffmanCodeLen[i])
 	}
 }
 
 func addDecoderNode(sym byte, code uint32, codeLen uint8) {
-	cur := rootHuffmanNode
+	cur := lazyRootHuffmanNode
 	for codeLen > 8 {
 		codeLen -= 8
 		i := uint8(code >> codeLen)

vendor/golang.org/x/net/http2/http2.go

@@ -201,19 +201,12 @@ func validWireHeaderFieldName(v string) bool {
 	return true
 }
 
-var httpCodeStringCommon = map[int]string{} // n -> strconv.Itoa(n)
-
-func init() {
-	for i := 100; i <= 999; i++ {
-		if v := http.StatusText(i); v != "" {
-			httpCodeStringCommon[i] = strconv.Itoa(i)
-		}
-	}
-}
-
 func httpCodeString(code int) string {
-	if s, ok := httpCodeStringCommon[code]; ok {
+	switch code {
-		return s
+	case 200:
+		return "200"
+	case 404:
+		return "404"
 	}
 	return strconv.Itoa(code)
 }

vendor/golang.org/x/net/http2/server.go

@@ -663,6 +663,7 @@ func (sc *serverConn) condlogf(err error, format string, args ...interface{}) {
 
 func (sc *serverConn) canonicalHeader(v string) string {
 	sc.serveG.check()
+	buildCommonHeaderMapsOnce()
 	cv, ok := commonCanonHeader[v]
 	if ok {
 		return cv
@@ -2346,15 +2347,7 @@ func (rws *responseWriterState) writeChunk(p []byte) (n int, err error) {
 		}
 		_, hasContentType := rws.snapHeader["Content-Type"]
 		if !hasContentType && bodyAllowedForStatus(rws.status) && len(p) > 0 {
-			if cto := rws.snapHeader.Get("X-Content-Type-Options"); strings.EqualFold("nosniff", cto) {
+			ctype = http.DetectContentType(p)
-				// nosniff is an explicit directive not to guess a content-type.
-				// Content-sniffing is no less susceptible to polyglot attacks via
-				// hosted content when done on the server.
-				ctype = "application/octet-stream"
-				rws.conn.logf("http2: WriteHeader called with X-Content-Type-Options:nosniff but no Content-Type")
-			} else {
-				ctype = http.DetectContentType(p)
-			}
 		}
 		var date string
 		if _, ok := rws.snapHeader["Date"]; !ok {

vendor/golang.org/x/net/ipv4/doc.go

@@ -55,7 +55,7 @@
 // Multicasting
 //
 // The options for multicasting are available for net.UDPConn and
-// net.IPconn which are created as network connections that use the
+// net.IPConn which are created as network connections that use the
 // IPv4 transport. A few network facilities must be prepared before
 // you begin multicasting, at a minimum joining network interfaces and
 // multicast groups.