MM-25731 Advanced Logging (#14888)

Adds Advanced Logging to server. Advanced Logging is an optional logging capability that allows customers to send log records to any number of destinations.

Supported destinations:
- file
- syslog (with out without TLS)
- raw TCP socket (with out without TLS)

Allows developers to specify discrete log levels as well as the standard trace, debug, info, ... panic. Existing code and logging API usage is unchanged.

Log records are emitted asynchronously to reduce latency to the caller. Supports hot-reloading of logger config, including adding removing targets.

Advanced Logging is configured within config.json via "LogSettings.AdvancedLoggingConfig" which can contain a filespec to another config file, a database DSN, or JSON.

vendor/github.com/mattermost/logr/README.md

@@ -1,8 +1,7 @@
 # logr
 
-[![GoDoc](https://godoc.org/github.com/wiggin77/logr?status.svg)](http://godoc.org/github.com/wiggin77/logr)
-[![Build Status](https://api.travis-ci.com/wiggin77/logr.svg?branch=master)](https://travis-ci.com/wiggin77/logr)
-[![Report Card](https://goreportcard.com/badge/github.com/wiggin77/logr)](https://goreportcard.com/report/github.com/wiggin77/logr)
+[![GoDoc](https://godoc.org/github.com/mattermost/logr?status.svg)](http://godoc.org/github.com/mattermost/logr)
+[![Report Card](https://goreportcard.com/badge/github.com/mattermost/logr)](https://goreportcard.com/report/github.com/mattermost/logr)
 
 Logr is a fully asynchronous, contextual logger for Go.
 

vendor/github.com/mattermost/logr/format/json.go

@@ -9,7 +9,7 @@ import (
 	"time"
 
 	"github.com/francoispqt/gojay"
-	"github.com/wiggin77/logr"
+	"github.com/mattermost/logr"
 )
 
 // ContextField is a name/value pair within the context fields.

vendor/github.com/mattermost/logr/format/plain.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 
-	"github.com/wiggin77/logr"
+	"github.com/mattermost/logr"
 )
 
 // Plain is the simplest formatter, outputting only text with

vendor/github.com/mattermost/logr/go.mod

@@ -1,4 +1,4 @@
-module github.com/wiggin77/logr
+module github.com/mattermost/logr
 
 go 1.12
 

vendor/github.com/mattermost/logr/logr.go

@@ -195,7 +195,7 @@ func (logr *Logr) IsLevelEnabled(lvl Level) LevelStatus {
 
 	// Cache and return the result.
 	if err := logr.lvlCache.put(lvl.ID, status); err != nil {
-		logr.OnLoggerError(err)
+		logr.ReportError(err)
 		return LevelStatus{}
 	}
 	return status

vendor/github.com/mattermost/logr/target/file.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"io"
 
-	"github.com/wiggin77/logr"
+	"github.com/mattermost/logr"
 	"github.com/wiggin77/merror"
 	"gopkg.in/natefinch/lumberjack.v2"
 )

vendor/github.com/mattermost/logr/target/syslog.go

@@ -7,7 +7,7 @@ import (
 	"fmt"
 	"log/syslog"
 
-	"github.com/wiggin77/logr"
+	"github.com/mattermost/logr"
 	"github.com/wiggin77/merror"
 )
 

vendor/github.com/mattermost/logr/target/writer.go

@@ -4,7 +4,7 @@ import (
 	"io"
 	"io/ioutil"
 
-	"github.com/wiggin77/logr"
+	"github.com/mattermost/logr"
 )
 
 // Writer outputs log records to any `io.Writer`.