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logparserpool.go
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/
logparserpool.go
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package main
import (
"encoding/json"
"fmt"
"github.com/hashicorp/consul/api"
"log"
"sync"
"time"
)
type LogParserPool struct {
sync.Mutex
*Setting
checklist map[string]string
exitChannel chan int
logParserList map[string]*LogParser
client *api.Client
}
func (m *LogParserPool) Stop() {
close(m.exitChannel)
m.Lock()
defer m.Unlock()
for k := range m.logParserList {
m.logParserList[k].Stop()
}
}
func (m *LogParserPool) Run() {
ticker := time.Tick(time.Second * 600)
config := api.DefaultConfig()
config.Address = m.ConsulAddress
config.Datacenter = m.Datacenter
config.Token = m.Token
var err error
m.client, err = api.NewClient(config)
if err != nil {
log.Println(err)
}
err = m.getLogTopics()
if err != nil {
log.Println("faild to get topic", err)
}
for {
select {
case <-ticker:
err = m.getLogTopics()
if err != nil {
log.Println(err)
}
m.checkLogParsers()
case <-m.exitChannel:
return
}
}
}
//"%s/topics"
func (m *LogParserPool) getLogTopics() error {
kv := m.client.KV()
topicsKey := fmt.Sprintf("%s/topics", m.ConsulKey)
pairs, _, err := kv.List(topicsKey, nil)
if err != nil {
return err
}
size := len(topicsKey) + 1
m.Lock()
defer m.Unlock()
for _, value := range pairs {
if len(value.Key) <= size {
continue
}
topic := value.Key[size:]
m.checklist[topic] = topic
if _, ok := m.logParserList[topic]; !ok {
var logSetting LogSetting
err = json.Unmarshal(value.Value, &logSetting)
if err != nil {
return err
}
w := &LogParser{
Setting: m.Setting,
logTopic: topic,
regexMap: make(map[string][]*RegexpSetting),
exitChannel: make(chan int),
msgChannel: make(chan ElasticRecord),
logSetting: &logSetting,
}
if err := w.Run(); err != nil {
log.Println(topic, err)
continue
}
m.logParserList[topic] = w
}
}
return nil
}
func (m *LogParserPool) checkLogParsers() {
m.Lock()
defer m.Unlock()
for k := range m.logParserList {
if _, ok := m.checklist[k]; !ok {
m.logParserList[k].Stop()
log.Println("remove:", k)
delete(m.logParserList, k)
}
}
}