/
docker_log_store.go
247 lines (232 loc) · 6.81 KB
/
docker_log_store.go
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// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package store
import (
"sync"
"time"
"github.com/goodrain/rainbond/eventlog/conf"
"github.com/goodrain/rainbond/eventlog/db"
"golang.org/x/net/context"
"github.com/Sirupsen/logrus"
"github.com/prometheus/client_golang/prometheus"
)
type dockerLogStore struct {
conf conf.EventStoreConf
log *logrus.Entry
barrels map[string]*dockerLogEventBarrel
rwLock sync.RWMutex
cancel func()
ctx context.Context
pool *sync.Pool
filePlugin db.Manager
LogSizePeerM int64
LogSize int64
barrelSize int
barrelEvent chan []string
allLogCount float64 //ues to pometheus monitor
}
func (h *dockerLogStore) Scrape(ch chan<- prometheus.Metric, namespace, exporter, from string) error {
chanDesc := prometheus.NewDesc(
prometheus.BuildFQName(namespace, exporter, "container_log_store_cache_barrel_count"),
"the cache container log barrel size.",
[]string{"from"}, nil,
)
ch <- prometheus.MustNewConstMetric(chanDesc, prometheus.GaugeValue, float64(len(h.barrels)), from)
logDesc := prometheus.NewDesc(
prometheus.BuildFQName(namespace, exporter, "container_log_store_log_count"),
"the handle container log count size.",
[]string{"from"}, nil,
)
ch <- prometheus.MustNewConstMetric(logDesc, prometheus.GaugeValue, h.allLogCount, from)
return nil
}
func (h *dockerLogStore) insertMessage(message *db.EventLogMessage) bool {
h.rwLock.RLock() //读锁
defer h.rwLock.RUnlock()
if ba, ok := h.barrels[message.EventID]; ok {
ba.insertMessage(message)
return true
}
return false
}
func (h *dockerLogStore) InsertMessage(message *db.EventLogMessage) {
if message == nil || message.EventID == "" {
return
}
h.LogSize++
h.allLogCount++
if ok := h.insertMessage(message); ok {
return
}
h.rwLock.Lock()
defer h.rwLock.Unlock()
ba := h.pool.Get().(*dockerLogEventBarrel)
ba.name = message.EventID
ba.insertMessage(message)
h.barrels[message.EventID] = ba
h.barrelSize++
}
func (h *dockerLogStore) subChan(eventID, subID string) chan *db.EventLogMessage {
h.rwLock.RLock() //读锁
defer h.rwLock.RUnlock()
if ba, ok := h.barrels[eventID]; ok {
ch := ba.addSubChan(subID)
return ch
}
return nil
}
func (h *dockerLogStore) SubChan(eventID, subID string) chan *db.EventLogMessage {
if ch := h.subChan(eventID, subID); ch != nil {
return ch
}
h.rwLock.Lock()
defer h.rwLock.Unlock()
ba := h.pool.Get().(*dockerLogEventBarrel)
h.barrels[eventID] = ba
return ba.addSubChan(subID)
}
func (h *dockerLogStore) RealseSubChan(eventID, subID string) {
h.rwLock.RLock()
defer h.rwLock.RUnlock()
if ba, ok := h.barrels[eventID]; ok {
ba.delSubChan(subID)
}
}
func (h *dockerLogStore) Run() {
go h.Gc()
go h.handleBarrelEvent()
}
func (h *dockerLogStore) GetMonitorData() *db.MonitorData {
data := &db.MonitorData{
ServiceSize: len(h.barrels),
LogSizePeerM: h.LogSizePeerM,
}
if h.LogSizePeerM == 0 {
data.LogSizePeerM = h.LogSize
}
return data
}
func (h *dockerLogStore) Gc() {
tiker := time.NewTicker(time.Minute * 1)
for {
select {
case <-tiker.C:
h.gcRun()
case <-h.ctx.Done():
h.log.Debug("docker log store gc stop.")
tiker.Stop()
return
}
}
}
func (h *dockerLogStore) handle() []string {
h.rwLock.RLock()
defer h.rwLock.RUnlock()
if len(h.barrels) == 0 {
return nil
}
var gcEvent []string
for k, v := range h.barrels {
if v.updateTime.Add(time.Minute * 1).Before(time.Now()) { // barrel 超时未收到消息
h.saveBeforeGc(k, v)
gcEvent = append(gcEvent, k)
}
if v.persistenceTime.Add(time.Minute * 2).Before(time.Now()) { //超过2分钟未持久化 间隔需要大于1分钟。以分钟为单位
if len(v.barrel) > 0 {
v.persistence()
}
}
}
return gcEvent
}
func (h *dockerLogStore) gcRun() {
t := time.Now()
//每分钟进行数据重置,获得每分钟日志量数据
h.LogSizePeerM = h.LogSize
h.LogSize = 0
gcEvent := h.handle()
if gcEvent != nil && len(gcEvent) > 0 {
h.rwLock.Lock()
defer h.rwLock.Unlock()
for _, id := range gcEvent {
barrel := h.barrels[id]
barrel.empty()
h.pool.Put(barrel) //放回对象池
delete(h.barrels, id)
h.barrelSize--
}
}
useTime := time.Now().UnixNano() - t.UnixNano()
h.log.Debugf("Docker log message store complete gc in %d ns", useTime)
}
func (h *dockerLogStore) stop() {
h.cancel()
h.rwLock.RLock()
defer h.rwLock.RUnlock()
for k, v := range h.barrels {
h.saveBeforeGc(k, v)
}
}
// gc删除前持久化数据
func (h *dockerLogStore) saveBeforeGc(eventID string, v *dockerLogEventBarrel) {
v.persistencelock.Lock()
v.gcPersistence()
if len(v.persistenceBarrel) > 0 {
if err := h.filePlugin.SaveMessage(v.persistenceBarrel); err != nil {
h.log.Error("persistence barrel message error.", err.Error())
h.InsertGarbageMessage(v.persistenceBarrel...)
}
h.log.Infof("persistence barrel(%s) %d log message to file.", eventID, len(v.persistenceBarrel))
}
v.persistenceBarrel = nil
v.persistencelock.Unlock()
h.log.Debugf("Docker message store complete gc barrel(%s)", v.name)
}
func (h *dockerLogStore) InsertGarbageMessage(message ...*db.EventLogMessage) {}
//TODD
func (h *dockerLogStore) handleBarrelEvent() {
for {
select {
case event := <-h.barrelEvent:
if len(event) < 1 {
return
}
h.log.Debug("Handle message store do event.", event)
if event[0] == "persistence" { //持久化命令
h.persistence(event)
}
case <-h.ctx.Done():
return
}
}
}
func (h *dockerLogStore) persistence(event []string) {
if len(event) == 2 {
eventID := event[1]
h.rwLock.RLock()
defer h.rwLock.RUnlock()
if ba, ok := h.barrels[eventID]; ok {
if ba.needPersistence { //取消异步持久化
if err := h.filePlugin.SaveMessage(ba.persistenceBarrel); err != nil {
h.log.Error("persistence barrel message error.", err.Error())
h.InsertGarbageMessage(ba.persistenceBarrel...)
}
h.log.Infof("persistence barrel(%s) %d log message to file.", eventID, len(ba.persistenceBarrel))
ba.persistenceBarrel = ba.persistenceBarrel[:0]
ba.needPersistence = false
}
}
}
}