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uq.go
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uq.go
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package main
import (
"flag"
"fmt"
"log"
"net/http"
_ "net/http/pprof"
"os"
"os/signal"
"path"
"runtime"
"strings"
"sync"
"syscall"
"github.com/buaazp/uq/admin"
"github.com/buaazp/uq/entry"
"github.com/buaazp/uq/queue"
"github.com/buaazp/uq/store"
. "github.com/buaazp/uq/utils"
)
var (
ip string
host string
port int
adminPort int
pprofPort int
protocol string
db string
dir string
logFile string
etcd string
cluster string
)
func init() {
flag.StringVar(&ip, "ip", "127.0.0.1", "self ip/host address")
flag.StringVar(&host, "host", "0.0.0.0", "listen ip")
flag.IntVar(&port, "port", 8808, "listen port")
flag.IntVar(&adminPort, "admin-port", 8809, "admin listen port")
flag.IntVar(&pprofPort, "pprof-port", 8080, "pprof listen port")
flag.StringVar(&protocol, "protocol", "redis", "frontend interface type [redis/mc/http]")
flag.StringVar(&db, "db", "goleveldb", "backend storage type [goleveldb/memdb]")
flag.StringVar(&dir, "dir", "./data", "backend storage path")
flag.StringVar(&logFile, "log", "", "uq log path")
flag.StringVar(&etcd, "etcd", "", "etcd service location")
flag.StringVar(&cluster, "cluster", "uq", "cluster name in etcd")
}
func belong(single string, team []string) bool {
for _, one := range team {
if single == one {
return true
}
}
return false
}
func checkArgs() bool {
if !belong(db, []string{"goleveldb", "memdb"}) {
fmt.Printf("db mode %s is not supported!\n", db)
return false
}
if !belong(protocol, []string{"redis", "mc", "http"}) {
fmt.Printf("protocol %s is not supported!\n", protocol)
return false
}
return true
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
defer func() {
fmt.Printf("byebye! uq see u later! 😄\n")
}()
err := os.MkdirAll(dir, 0755)
if err != nil {
fmt.Printf("mkdir %s error: %s\n", dir, err)
return
}
if logFile == "" {
logFile = path.Join(dir, "uq.log")
}
logf, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
if err != nil {
fmt.Printf("log open error: %s\n", err)
return
}
log.SetFlags(log.Lshortfile | log.LstdFlags | log.Lmicroseconds)
log.SetPrefix("[uq] ")
log.SetOutput(logf)
flag.Parse()
if !checkArgs() {
return
}
fmt.Printf("uq started! 😄\n")
var storage store.Storage
if db == "goleveldb" {
dbpath := path.Clean(path.Join(dir, "uq.db"))
log.Printf("dbpath: %s", dbpath)
storage, err = store.NewLevelStore(dbpath)
} else if db == "memdb" {
storage, err = store.NewMemStore()
} else {
fmt.Printf("store %s is not supported!\n", db)
return
}
if err != nil {
fmt.Printf("store init error: %s\n", err)
return
}
var etcdServers []string
if etcd != "" {
etcdServers = strings.Split(etcd, ",")
}
var messageQueue queue.MessageQueue
messageQueue, err = queue.NewUnitedQueue(storage, ip, port, etcdServers, cluster)
if err != nil {
fmt.Printf("queue init error: %s\n", err)
storage.Close()
return
}
var entrance entry.Entrance
if protocol == "http" {
entrance, err = entry.NewHttpEntry(host, port, messageQueue)
} else if protocol == "mc" {
entrance, err = entry.NewMcEntry(host, port, messageQueue)
} else if protocol == "redis" {
entrance, err = entry.NewRedisEntry(host, port, messageQueue)
} else {
fmt.Printf("protocol %s is not supported!\n", protocol)
return
}
if err != nil {
fmt.Printf("entry init error: %s\n", err)
messageQueue.Close()
return
}
stop := make(chan os.Signal)
entryFailed := make(chan bool)
adminFailed := make(chan bool)
signal.Notify(stop, syscall.SIGINT, os.Interrupt, os.Kill)
var wg sync.WaitGroup
// start entrance server
go func(c chan bool) {
wg.Add(1)
defer wg.Done()
err := entrance.ListenAndServe()
if err != nil {
if !strings.Contains(err.Error(), "stopped") {
fmt.Printf("entry listen error: %s\n", err)
}
close(c)
}
}(entryFailed)
var adminServer admin.AdminServer
adminServer, err = admin.NewAdminServer(host, adminPort, messageQueue)
if err != nil {
fmt.Printf("admin init error: %s\n", err)
entrance.Stop()
return
}
// start admin server
go func(c chan bool) {
wg.Add(1)
defer wg.Done()
err := adminServer.ListenAndServe()
if err != nil {
if !strings.Contains(err.Error(), "stopped") {
fmt.Printf("entry listen error: %s\n", err)
}
close(c)
}
}(adminFailed)
// start pprof server
go func() {
addr := Addrcat(host, pprofPort)
log.Println(http.ListenAndServe(addr, nil))
}()
select {
case <-stop:
// log.Printf("got signal: %v", signal)
adminServer.Stop()
entrance.Stop()
case <-entryFailed:
messageQueue.Close()
case <-adminFailed:
entrance.Stop()
}
wg.Wait()
}