/
logflume.go
192 lines (161 loc) · 4.74 KB
/
logflume.go
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package main
import (
"encoding/json"
"fmt"
"os"
"os/signal"
"runtime"
"strconv"
"strings"
"syscall"
log "github.com/Sirupsen/logrus"
"github.com/docopt/docopt-go"
)
var checkpoint string
var (
cpus = 2
daemon_mode = false
work_dir = "./logflume_worker"
tailOnLog = false
harvestBufferSize = 16 << 10 //16k
deadtime = "1h" //1 hour
defaultTopic = "test" //kafka Topic
defaultBrokerList = []string{"127.0.0.1:9092"}
kafkabuffer = 256
topicmap = map[string]string{}
starttime = "1h"
)
var kafkaTopic = defaultTopic
var retryTopic = kafkaTopic
var hashKey = "test-key"
var brokerList = defaultBrokerList
var usage = `usage: logflume (--checkpoint=<path> | -c=<path>) [options]
Options:
-h, --help Help info
-d, --daemon Daemon mode[default: false]
-w, --work-dir=<path> Work directory[default: logflume_worker]
-c, --checkpoint=<path> Check point, directory or an file, terminal with / means a directory
-k, --cpus=<num> Num of CPU logflume use
-l, --log-level=<level> Log level, default info, panic | fatal | error | warn | info | debug
-t, --tail=<flag> Tail on Log
--deadtime=<time> The time between last modify, set log to dead[default: 1h](m:Minute, h:Hour)
--topic=<topic> kafka Topic
--retrytopic=<retry> retry Topic of failed message kafka Topic
--topicmap=<map_in_json> topic map in JSON format, like: {"a_*.log":"a_topic", "b_*.log":"b_topic"}
--brokerlist=<broker> broker list, like: "192.168.1.10:9092,192.168.1.11:9092"
--kafkabuffer=<size> kafaka client buffer size, system default is 256
--starttime=<stime> set collect starttime[default: 1h]
`
var mainRetryer *Retryer
var remoteAvailable bool = true
func init() {
formatter := log.TextFormatter{}
formatter.DisableTimestamp = false
formatter.DisableColors = true
log.SetFormatter(&formatter)
//log.SetLevel(log.InfoLevel)
}
func main() {
args, err := docopt.Parse(usage, nil, true, "logflume v1.0", false)
if err != nil {
log.Error("Parse command line error: ", err)
}
log.Println(args)
if args["--daemon"] != nil {
daemon_mode = args["--daemon"].(bool)
}
if args["--cpus"] != nil {
cpusStr := args["--cpus"].(string)
cpus, _ = strconv.Atoi(cpusStr)
}
if args["--log-level"] != nil {
levelStr := args["--log-level"].(string)
level, err := log.ParseLevel(levelStr)
if err != nil {
log.Errorf("Parse level string(%s) failed, error: %s", levelStr, err)
} else {
log.SetLevel(level)
}
}
if args["--work-dir"] != nil {
work_dir = args["--work-dir"].(string)
}
if args["--checkpoint"] != nil {
checkpoint = args["--checkpoint"].(string)
}
if args["--tail"] != nil {
tailOnLog = args["--tail"].(bool)
}
if args["--deadtime"] != nil {
deadtime = args["--deadtime"].(string)
}
if args["--topic"] != nil {
kafkaTopic = args["--topic"].(string)
retryTopic = kafkaTopic
}
if args["--retrytopic"] != nil {
retryTopic = args["--retrytopic"].(string)
}
if args["--topicmap"] != nil {
topicmapStr := args["--topicmap"].(string)
if err := json.Unmarshal([]byte(topicmapStr), &topicmap); err != nil {
log.Error(err)
os.Exit(2)
}
}
if args["--brokerlist"] != nil {
brokerListStr := args["--brokerlist"].(string)
brokerList = strings.Split(brokerListStr, ",")
}
if args["--kafkabuffer"] != nil {
kafkabufferStr := args["--kafkabuffer"].(string)
kafkabuffer, _ = strconv.Atoi(kafkabufferStr)
}
if args["--starttime"] != nil {
starttime = args["--starttime"].(string)
}
log.Println(daemon_mode, cpus, work_dir, checkpoint, tailOnLog, deadtime, kafkaTopic, retryTopic, brokerList)
log.Println(topicmap)
if cpus < 2 {
cpus = runtime.NumCPU()
}
runtime.GOMAXPROCS(cpus)
done := make(chan bool)
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
go func() {
sig := <-sigs
log.Debug(sig)
close(done)
}()
if err := os.Chdir(work_dir); err != nil {
log.Fatalln("change dir error:", err)
}
if _, err := os.Stat(".lock"); os.IsNotExist(err) {
log.Debug("starting logflume")
} else {
log.Error("already run")
os.Exit(2)
}
lockFile, err := os.OpenFile(".lock", os.O_CREATE|os.O_WRONLY, 0666)
if err != nil {
log.Fatalln("create pid file failed! error:", err)
}
defer lockFile.Close()
defer func() {
log.Info("remove .lock file")
os.Remove(".lock")
}()
if _, err := lockFile.WriteString(fmt.Sprintf("%d", os.Getpid())); err != nil {
log.Error("write lock file failed, error:", err)
}
mainRetryer, err = NewRetryer("retry/backup/retry.list")
if err != nil {
log.Error("Create mainRetryer failed, error:", err)
return
}
prospector := Prospector{checkpoint: checkpoint, files: make(map[string]*FileState)}
go prospector.Prospect(done)
go mainRetryer.doRetry()
<-done
}