Updating server dependancies. Also adding github.com/jaytaylor/html2text and gopkg.in/gomail.v2 (#5748)

Этот коммит содержится в:
Christopher Speller
2017-03-13 12:54:22 -04:00
коммит произвёл GitHub
родитель 3ada7a41a7
Коммит c281ee3b61
356 изменённых файлов: 26671 добавлений и 14262 удалений

361
vendor/github.com/prometheus/procfs/xfs/parse.go сгенерированный поставляемый Обычный файл
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// Copyright 2017 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package xfs
import (
"bufio"
"fmt"
"io"
"log"
"strconv"
"strings"
)
// ParseStats parses a Stats from an input io.Reader, using the format
// found in /proc/fs/xfs/stat.
func ParseStats(r io.Reader) (*Stats, error) {
const (
// Fields parsed into stats structures.
fieldExtentAlloc = "extent_alloc"
fieldAbt = "abt"
fieldBlkMap = "blk_map"
fieldBmbt = "bmbt"
fieldDir = "dir"
fieldTrans = "trans"
fieldIg = "ig"
fieldLog = "log"
fieldRw = "rw"
fieldAttr = "attr"
fieldIcluster = "icluster"
fieldVnodes = "vnodes"
fieldBuf = "buf"
fieldXpc = "xpc"
// Unimplemented at this time due to lack of documentation.
fieldPushAil = "push_ail"
fieldXstrat = "xstrat"
fieldAbtb2 = "abtb2"
fieldAbtc2 = "abtc2"
fieldBmbt2 = "bmbt2"
fieldIbt2 = "ibt2"
fieldFibt2 = "fibt2"
fieldQm = "qm"
fieldDebug = "debug"
)
var xfss Stats
s := bufio.NewScanner(r)
for s.Scan() {
// Expect at least a string label and a single integer value, ex:
// - abt 0
// - rw 1 2
ss := strings.Fields(string(s.Bytes()))
if len(ss) < 2 {
continue
}
label := ss[0]
// Extended precision counters are uint64 values.
if label == fieldXpc {
us, err := parseUint64s(ss[1:])
if err != nil {
return nil, err
}
xfss.ExtendedPrecision, err = extendedPrecisionStats(us)
if err != nil {
return nil, err
}
continue
}
// All other counters are uint32 values.
us, err := parseUint32s(ss[1:])
if err != nil {
return nil, err
}
switch label {
case fieldExtentAlloc:
xfss.ExtentAllocation, err = extentAllocationStats(us)
case fieldAbt:
xfss.AllocationBTree, err = btreeStats(us)
case fieldBlkMap:
xfss.BlockMapping, err = blockMappingStats(us)
case fieldBmbt:
xfss.BlockMapBTree, err = btreeStats(us)
case fieldDir:
xfss.DirectoryOperation, err = directoryOperationStats(us)
case fieldTrans:
xfss.Transaction, err = transactionStats(us)
case fieldIg:
xfss.InodeOperation, err = inodeOperationStats(us)
case fieldLog:
xfss.LogOperation, err = logOperationStats(us)
case fieldRw:
xfss.ReadWrite, err = readWriteStats(us)
case fieldAttr:
xfss.AttributeOperation, err = attributeOperationStats(us)
case fieldIcluster:
xfss.InodeClustering, err = inodeClusteringStats(us)
case fieldVnodes:
xfss.Vnode, err = vnodeStats(us)
case fieldBuf:
xfss.Buffer, err = bufferStats(us)
}
if err != nil {
return nil, err
}
}
return &xfss, s.Err()
}
// extentAllocationStats builds an ExtentAllocationStats from a slice of uint32s.
func extentAllocationStats(us []uint32) (ExtentAllocationStats, error) {
if l := len(us); l != 4 {
return ExtentAllocationStats{}, fmt.Errorf("incorrect number of values for XFS extent allocation stats: %d", l)
}
return ExtentAllocationStats{
ExtentsAllocated: us[0],
BlocksAllocated: us[1],
ExtentsFreed: us[2],
BlocksFreed: us[3],
}, nil
}
// btreeStats builds a BTreeStats from a slice of uint32s.
func btreeStats(us []uint32) (BTreeStats, error) {
if l := len(us); l != 4 {
return BTreeStats{}, fmt.Errorf("incorrect number of values for XFS btree stats: %d", l)
}
return BTreeStats{
Lookups: us[0],
Compares: us[1],
RecordsInserted: us[2],
RecordsDeleted: us[3],
}, nil
}
// BlockMappingStat builds a BlockMappingStats from a slice of uint32s.
func blockMappingStats(us []uint32) (BlockMappingStats, error) {
if l := len(us); l != 7 {
return BlockMappingStats{}, fmt.Errorf("incorrect number of values for XFS block mapping stats: %d", l)
}
return BlockMappingStats{
Reads: us[0],
Writes: us[1],
Unmaps: us[2],
ExtentListInsertions: us[3],
ExtentListDeletions: us[4],
ExtentListLookups: us[5],
ExtentListCompares: us[6],
}, nil
}
// DirectoryOperationStats builds a DirectoryOperationStats from a slice of uint32s.
func directoryOperationStats(us []uint32) (DirectoryOperationStats, error) {
if l := len(us); l != 4 {
return DirectoryOperationStats{}, fmt.Errorf("incorrect number of values for XFS directory operation stats: %d", l)
}
return DirectoryOperationStats{
Lookups: us[0],
Creates: us[1],
Removes: us[2],
Getdents: us[3],
}, nil
}
// TransactionStats builds a TransactionStats from a slice of uint32s.
func transactionStats(us []uint32) (TransactionStats, error) {
if l := len(us); l != 3 {
return TransactionStats{}, fmt.Errorf("incorrect number of values for XFS transaction stats: %d", l)
}
return TransactionStats{
Sync: us[0],
Async: us[1],
Empty: us[2],
}, nil
}
// InodeOperationStats builds an InodeOperationStats from a slice of uint32s.
func inodeOperationStats(us []uint32) (InodeOperationStats, error) {
if l := len(us); l != 7 {
return InodeOperationStats{}, fmt.Errorf("incorrect number of values for XFS inode operation stats: %d", l)
}
return InodeOperationStats{
Attempts: us[0],
Found: us[1],
Recycle: us[2],
Missed: us[3],
Duplicate: us[4],
Reclaims: us[5],
AttributeChange: us[6],
}, nil
}
// LogOperationStats builds a LogOperationStats from a slice of uint32s.
func logOperationStats(us []uint32) (LogOperationStats, error) {
if l := len(us); l != 5 {
return LogOperationStats{}, fmt.Errorf("incorrect number of values for XFS log operation stats: %d", l)
}
return LogOperationStats{
Writes: us[0],
Blocks: us[1],
NoInternalBuffers: us[2],
Force: us[3],
ForceSleep: us[4],
}, nil
}
// ReadWriteStats builds a ReadWriteStats from a slice of uint32s.
func readWriteStats(us []uint32) (ReadWriteStats, error) {
if l := len(us); l != 2 {
return ReadWriteStats{}, fmt.Errorf("incorrect number of values for XFS read write stats: %d", l)
}
return ReadWriteStats{
Read: us[0],
Write: us[1],
}, nil
}
// AttributeOperationStats builds an AttributeOperationStats from a slice of uint32s.
func attributeOperationStats(us []uint32) (AttributeOperationStats, error) {
if l := len(us); l != 4 {
return AttributeOperationStats{}, fmt.Errorf("incorrect number of values for XFS attribute operation stats: %d", l)
}
return AttributeOperationStats{
Get: us[0],
Set: us[1],
Remove: us[2],
List: us[3],
}, nil
}
// InodeClusteringStats builds an InodeClusteringStats from a slice of uint32s.
func inodeClusteringStats(us []uint32) (InodeClusteringStats, error) {
if l := len(us); l != 3 {
return InodeClusteringStats{}, fmt.Errorf("incorrect number of values for XFS inode clustering stats: %d", l)
}
return InodeClusteringStats{
Iflush: us[0],
Flush: us[1],
FlushInode: us[2],
}, nil
}
// VnodeStats builds a VnodeStats from a slice of uint32s.
func vnodeStats(us []uint32) (VnodeStats, error) {
// The attribute "Free" appears to not be available on older XFS
// stats versions. Therefore, 7 or 8 elements may appear in
// this slice.
l := len(us)
log.Println(l)
if l != 7 && l != 8 {
return VnodeStats{}, fmt.Errorf("incorrect number of values for XFS vnode stats: %d", l)
}
s := VnodeStats{
Active: us[0],
Allocate: us[1],
Get: us[2],
Hold: us[3],
Release: us[4],
Reclaim: us[5],
Remove: us[6],
}
// Skip adding free, unless it is present. The zero value will
// be used in place of an actual count.
if l == 7 {
return s, nil
}
s.Free = us[7]
return s, nil
}
// BufferStats builds a BufferStats from a slice of uint32s.
func bufferStats(us []uint32) (BufferStats, error) {
if l := len(us); l != 9 {
return BufferStats{}, fmt.Errorf("incorrect number of values for XFS buffer stats: %d", l)
}
return BufferStats{
Get: us[0],
Create: us[1],
GetLocked: us[2],
GetLockedWaited: us[3],
BusyLocked: us[4],
MissLocked: us[5],
PageRetries: us[6],
PageFound: us[7],
GetRead: us[8],
}, nil
}
// ExtendedPrecisionStats builds an ExtendedPrecisionStats from a slice of uint32s.
func extendedPrecisionStats(us []uint64) (ExtendedPrecisionStats, error) {
if l := len(us); l != 3 {
return ExtendedPrecisionStats{}, fmt.Errorf("incorrect number of values for XFS extended precision stats: %d", l)
}
return ExtendedPrecisionStats{
FlushBytes: us[0],
WriteBytes: us[1],
ReadBytes: us[2],
}, nil
}
// parseUint32s parses a slice of strings into a slice of uint32s.
func parseUint32s(ss []string) ([]uint32, error) {
us := make([]uint32, 0, len(ss))
for _, s := range ss {
u, err := strconv.ParseUint(s, 10, 32)
if err != nil {
return nil, err
}
us = append(us, uint32(u))
}
return us, nil
}
// parseUint64s parses a slice of strings into a slice of uint64s.
func parseUint64s(ss []string) ([]uint64, error) {
us := make([]uint64, 0, len(ss))
for _, s := range ss {
u, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return nil, err
}
us = append(us, u)
}
return us, nil
}

446
vendor/github.com/prometheus/procfs/xfs/parse_test.go сгенерированный поставляемый Обычный файл
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// Copyright 2017 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package xfs_test
import (
"log"
"reflect"
"strings"
"testing"
"github.com/prometheus/procfs"
"github.com/prometheus/procfs/xfs"
)
func TestParseStats(t *testing.T) {
tests := []struct {
name string
s string
fs bool
stats *xfs.Stats
invalid bool
}{
{
name: "empty file OK",
},
{
name: "short or empty lines and unknown labels ignored",
s: "one\n\ntwo 1 2 3\n",
stats: &xfs.Stats{},
},
{
name: "bad uint32",
s: "extent_alloc XXX",
invalid: true,
},
{
name: "bad uint64",
s: "xpc XXX",
invalid: true,
},
{
name: "extent_alloc bad",
s: "extent_alloc 1",
invalid: true,
},
{
name: "extent_alloc OK",
s: "extent_alloc 1 2 3 4",
stats: &xfs.Stats{
ExtentAllocation: xfs.ExtentAllocationStats{
ExtentsAllocated: 1,
BlocksAllocated: 2,
ExtentsFreed: 3,
BlocksFreed: 4,
},
},
},
{
name: "abt bad",
s: "abt 1",
invalid: true,
},
{
name: "abt OK",
s: "abt 1 2 3 4",
stats: &xfs.Stats{
AllocationBTree: xfs.BTreeStats{
Lookups: 1,
Compares: 2,
RecordsInserted: 3,
RecordsDeleted: 4,
},
},
},
{
name: "blk_map bad",
s: "blk_map 1",
invalid: true,
},
{
name: "blk_map OK",
s: "blk_map 1 2 3 4 5 6 7",
stats: &xfs.Stats{
BlockMapping: xfs.BlockMappingStats{
Reads: 1,
Writes: 2,
Unmaps: 3,
ExtentListInsertions: 4,
ExtentListDeletions: 5,
ExtentListLookups: 6,
ExtentListCompares: 7,
},
},
},
{
name: "bmbt bad",
s: "bmbt 1",
invalid: true,
},
{
name: "bmbt OK",
s: "bmbt 1 2 3 4",
stats: &xfs.Stats{
BlockMapBTree: xfs.BTreeStats{
Lookups: 1,
Compares: 2,
RecordsInserted: 3,
RecordsDeleted: 4,
},
},
},
{
name: "dir bad",
s: "dir 1",
invalid: true,
},
{
name: "dir OK",
s: "dir 1 2 3 4",
stats: &xfs.Stats{
DirectoryOperation: xfs.DirectoryOperationStats{
Lookups: 1,
Creates: 2,
Removes: 3,
Getdents: 4,
},
},
},
{
name: "trans bad",
s: "trans 1",
invalid: true,
},
{
name: "trans OK",
s: "trans 1 2 3",
stats: &xfs.Stats{
Transaction: xfs.TransactionStats{
Sync: 1,
Async: 2,
Empty: 3,
},
},
},
{
name: "ig bad",
s: "ig 1",
invalid: true,
},
{
name: "ig OK",
s: "ig 1 2 3 4 5 6 7",
stats: &xfs.Stats{
InodeOperation: xfs.InodeOperationStats{
Attempts: 1,
Found: 2,
Recycle: 3,
Missed: 4,
Duplicate: 5,
Reclaims: 6,
AttributeChange: 7,
},
},
},
{
name: "log bad",
s: "log 1",
invalid: true,
},
{
name: "log OK",
s: "log 1 2 3 4 5",
stats: &xfs.Stats{
LogOperation: xfs.LogOperationStats{
Writes: 1,
Blocks: 2,
NoInternalBuffers: 3,
Force: 4,
ForceSleep: 5,
},
},
},
{
name: "rw bad",
s: "rw 1",
invalid: true,
},
{
name: "rw OK",
s: "rw 1 2",
stats: &xfs.Stats{
ReadWrite: xfs.ReadWriteStats{
Read: 1,
Write: 2,
},
},
},
{
name: "attr bad",
s: "attr 1",
invalid: true,
},
{
name: "attr OK",
s: "attr 1 2 3 4",
stats: &xfs.Stats{
AttributeOperation: xfs.AttributeOperationStats{
Get: 1,
Set: 2,
Remove: 3,
List: 4,
},
},
},
{
name: "icluster bad",
s: "icluster 1",
invalid: true,
},
{
name: "icluster OK",
s: "icluster 1 2 3",
stats: &xfs.Stats{
InodeClustering: xfs.InodeClusteringStats{
Iflush: 1,
Flush: 2,
FlushInode: 3,
},
},
},
{
name: "vnodes bad",
s: "vnodes 1",
invalid: true,
},
{
name: "vnodes (missing free) OK",
s: "vnodes 1 2 3 4 5 6 7",
stats: &xfs.Stats{
Vnode: xfs.VnodeStats{
Active: 1,
Allocate: 2,
Get: 3,
Hold: 4,
Release: 5,
Reclaim: 6,
Remove: 7,
},
},
},
{
name: "vnodes (with free) OK",
s: "vnodes 1 2 3 4 5 6 7 8",
stats: &xfs.Stats{
Vnode: xfs.VnodeStats{
Active: 1,
Allocate: 2,
Get: 3,
Hold: 4,
Release: 5,
Reclaim: 6,
Remove: 7,
Free: 8,
},
},
},
{
name: "buf bad",
s: "buf 1",
invalid: true,
},
{
name: "buf OK",
s: "buf 1 2 3 4 5 6 7 8 9",
stats: &xfs.Stats{
Buffer: xfs.BufferStats{
Get: 1,
Create: 2,
GetLocked: 3,
GetLockedWaited: 4,
BusyLocked: 5,
MissLocked: 6,
PageRetries: 7,
PageFound: 8,
GetRead: 9,
},
},
},
{
name: "xpc bad",
s: "xpc 1",
invalid: true,
},
{
name: "xpc OK",
s: "xpc 1 2 3",
stats: &xfs.Stats{
ExtendedPrecision: xfs.ExtendedPrecisionStats{
FlushBytes: 1,
WriteBytes: 2,
ReadBytes: 3,
},
},
},
{
name: "fixtures OK",
fs: true,
stats: &xfs.Stats{
ExtentAllocation: xfs.ExtentAllocationStats{
ExtentsAllocated: 92447,
BlocksAllocated: 97589,
ExtentsFreed: 92448,
BlocksFreed: 93751,
},
AllocationBTree: xfs.BTreeStats{
Lookups: 0,
Compares: 0,
RecordsInserted: 0,
RecordsDeleted: 0,
},
BlockMapping: xfs.BlockMappingStats{
Reads: 1767055,
Writes: 188820,
Unmaps: 184891,
ExtentListInsertions: 92447,
ExtentListDeletions: 92448,
ExtentListLookups: 2140766,
ExtentListCompares: 0,
},
BlockMapBTree: xfs.BTreeStats{
Lookups: 0,
Compares: 0,
RecordsInserted: 0,
RecordsDeleted: 0,
},
DirectoryOperation: xfs.DirectoryOperationStats{
Lookups: 185039,
Creates: 92447,
Removes: 92444,
Getdents: 136422,
},
Transaction: xfs.TransactionStats{
Sync: 706,
Async: 944304,
Empty: 0,
},
InodeOperation: xfs.InodeOperationStats{
Attempts: 185045,
Found: 58807,
Recycle: 0,
Missed: 126238,
Duplicate: 0,
Reclaims: 33637,
AttributeChange: 22,
},
LogOperation: xfs.LogOperationStats{
Writes: 2883,
Blocks: 113448,
NoInternalBuffers: 9,
Force: 17360,
ForceSleep: 739,
},
ReadWrite: xfs.ReadWriteStats{
Read: 107739,
Write: 94045,
},
AttributeOperation: xfs.AttributeOperationStats{
Get: 4,
Set: 0,
Remove: 0,
List: 0,
},
InodeClustering: xfs.InodeClusteringStats{
Iflush: 8677,
Flush: 7849,
FlushInode: 135802,
},
Vnode: xfs.VnodeStats{
Active: 92601,
Allocate: 0,
Get: 0,
Hold: 0,
Release: 92444,
Reclaim: 92444,
Remove: 92444,
Free: 0,
},
Buffer: xfs.BufferStats{
Get: 2666287,
Create: 7122,
GetLocked: 2659202,
GetLockedWaited: 3599,
BusyLocked: 2,
MissLocked: 7085,
PageRetries: 0,
PageFound: 10297,
GetRead: 7085,
},
ExtendedPrecision: xfs.ExtendedPrecisionStats{
FlushBytes: 399724544,
WriteBytes: 92823103,
ReadBytes: 86219234,
},
},
},
}
for i, tt := range tests {
t.Logf("[%02d] test %q", i, tt.name)
var (
stats *xfs.Stats
err error
)
if tt.s != "" {
stats, err = xfs.ParseStats(strings.NewReader(tt.s))
}
if tt.fs {
stats, err = procfs.FS("../fixtures").XFSStats()
}
if tt.invalid && err == nil {
t.Error("expected an error, but none occurred")
}
if !tt.invalid && err != nil {
t.Errorf("unexpected error: %v", err)
}
if want, have := tt.stats, stats; !reflect.DeepEqual(want, have) {
log.Printf("stats: %#v", have)
t.Errorf("unexpected XFS stats:\nwant:\n%v\nhave:\n%v", want, have)
}
}
}

158
vendor/github.com/prometheus/procfs/xfs/xfs.go сгенерированный поставляемый Обычный файл
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// Copyright 2017 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package xfs provides access to statistics exposed by the XFS filesystem.
package xfs
// Stats contains XFS filesystem runtime statistics, parsed from
// /proc/fs/xfs/stat.
//
// The names and meanings of each statistic were taken from
// http://xfs.org/index.php/Runtime_Stats and xfs_stats.h in the Linux
// kernel source. Most counters are uint32s (same data types used in
// xfs_stats.h), but some of the "extended precision stats" are uint64s.
type Stats struct {
ExtentAllocation ExtentAllocationStats
AllocationBTree BTreeStats
BlockMapping BlockMappingStats
BlockMapBTree BTreeStats
DirectoryOperation DirectoryOperationStats
Transaction TransactionStats
InodeOperation InodeOperationStats
LogOperation LogOperationStats
ReadWrite ReadWriteStats
AttributeOperation AttributeOperationStats
InodeClustering InodeClusteringStats
Vnode VnodeStats
Buffer BufferStats
ExtendedPrecision ExtendedPrecisionStats
}
// ExtentAllocationStats contains statistics regarding XFS extent allocations.
type ExtentAllocationStats struct {
ExtentsAllocated uint32
BlocksAllocated uint32
ExtentsFreed uint32
BlocksFreed uint32
}
// BTreeStats contains statistics regarding an XFS internal B-tree.
type BTreeStats struct {
Lookups uint32
Compares uint32
RecordsInserted uint32
RecordsDeleted uint32
}
// BlockMappingStats contains statistics regarding XFS block maps.
type BlockMappingStats struct {
Reads uint32
Writes uint32
Unmaps uint32
ExtentListInsertions uint32
ExtentListDeletions uint32
ExtentListLookups uint32
ExtentListCompares uint32
}
// DirectoryOperationStats contains statistics regarding XFS directory entries.
type DirectoryOperationStats struct {
Lookups uint32
Creates uint32
Removes uint32
Getdents uint32
}
// TransactionStats contains statistics regarding XFS metadata transactions.
type TransactionStats struct {
Sync uint32
Async uint32
Empty uint32
}
// InodeOperationStats contains statistics regarding XFS inode operations.
type InodeOperationStats struct {
Attempts uint32
Found uint32
Recycle uint32
Missed uint32
Duplicate uint32
Reclaims uint32
AttributeChange uint32
}
// LogOperationStats contains statistics regarding the XFS log buffer.
type LogOperationStats struct {
Writes uint32
Blocks uint32
NoInternalBuffers uint32
Force uint32
ForceSleep uint32
}
// ReadWriteStats contains statistics regarding the number of read and write
// system calls for XFS filesystems.
type ReadWriteStats struct {
Read uint32
Write uint32
}
// AttributeOperationStats contains statistics regarding manipulation of
// XFS extended file attributes.
type AttributeOperationStats struct {
Get uint32
Set uint32
Remove uint32
List uint32
}
// InodeClusteringStats contains statistics regarding XFS inode clustering
// operations.
type InodeClusteringStats struct {
Iflush uint32
Flush uint32
FlushInode uint32
}
// VnodeStats contains statistics regarding XFS vnode operations.
type VnodeStats struct {
Active uint32
Allocate uint32
Get uint32
Hold uint32
Release uint32
Reclaim uint32
Remove uint32
Free uint32
}
// BufferStats contains statistics regarding XFS read/write I/O buffers.
type BufferStats struct {
Get uint32
Create uint32
GetLocked uint32
GetLockedWaited uint32
BusyLocked uint32
MissLocked uint32
PageRetries uint32
PageFound uint32
GetRead uint32
}
// ExtendedPrecisionStats contains high precision counters used to track the
// total number of bytes read, written, or flushed, during XFS operations.
type ExtendedPrecisionStats struct {
FlushBytes uint64
WriteBytes uint64
ReadBytes uint64
}