/
docker_log_store.go
279 lines (263 loc) · 7.66 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.persistenceTime = time.Now()
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)
ba.name = eventID
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.Second * 30)
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 := range h.barrels {
if h.barrels[k].updateTime.Add(time.Minute*1).Before(time.Now()) && h.barrels[k].GetSubChanLength() == 0 {
h.saveBeforeGc(k, h.barrels[k])
gcEvent = append(gcEvent, k)
h.log.Debugf("barrel %s need be gc", k)
} else if h.barrels[k].persistenceTime.Add(time.Minute * 1).Before(time.Now()) {
//The interval not persisted for more than 1 minute should be more than 30 seconds
if len(h.barrels[k].barrel) > 0 {
h.log.Debugf("barrel %s need persistence", k)
h.barrels[k].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)
delete(h.barrels, id)
h.barrelSize--
h.log.Debugf("docker log barrel(%s) gc complete", id)
}
}
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()
}
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
}
}
}
}
func (h *dockerLogStore) GetHistoryMessage(eventID string, length int) (re []string) {
h.rwLock.RLock()
defer h.rwLock.RUnlock()
if ba, ok := h.barrels[eventID]; ok {
for _, m := range ba.barrel {
if len(m.Content) > 0 {
re = append(re, string(m.Content))
}
}
}
logrus.Debugf("want length: %d; the length of re: %d;", length, len(re))
if len(re) >= length && length > 0 {
return re[:length-1]
}
filelength := func() int {
if length-len(re) > 0 {
return length - len(re)
}
return 0
}()
result, err := h.filePlugin.GetMessages(eventID, "", filelength)
if result == nil || err != nil {
return re
}
re = append(result.([]string), re...)
return re
}