package main import ( "code.google.com/p/weed-fs/go/glog" "code.google.com/p/weed-fs/go/util" "code.google.com/p/weed-fs/go/weed/weed_server" "github.com/gorilla/mux" "net/http" "os" "runtime" "strconv" "strings" "time" ) func init() { cmdMaster.Run = runMaster // break init cycle } var cmdMaster = &Command{ UsageLine: "master -port=9333", Short: "start a master server", Long: `start a master server to provide volume=>location mapping service and sequence number of file ids `, } var ( mport = cmdMaster.Flag.Int("port", 9333, "http listen port") masterIp = cmdMaster.Flag.String("ip", "", "master listening ip address, default to listen on all network interfaces") mPublicIp = cmdMaster.Flag.String("publicIp", "", "peer accessible |") metaFolder = cmdMaster.Flag.String("mdir", os.TempDir(), "data directory to store meta data") masterPeers = cmdMaster.Flag.String("peers", "", "other master nodes in comma separated ip:port list") volumeSizeLimitMB = cmdMaster.Flag.Uint("volumeSizeLimitMB", 30*1000, "Master stops directing writes to oversized volumes.") mpulse = cmdMaster.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats") confFile = cmdMaster.Flag.String("conf", "/etc/weedfs/weedfs.conf", "xml configuration file") defaultReplicaPlacement = cmdMaster.Flag.String("defaultReplication", "000", "Default replication type if not specified.") mTimeout = cmdMaster.Flag.Int("idleTimeout", 10, "connection idle seconds") mMaxCpu = cmdMaster.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs") garbageThreshold = cmdMaster.Flag.String("garbageThreshold", "0.3", "threshold to vacuum and reclaim spaces") masterWhiteListOption = cmdMaster.Flag.String("whiteList", "", "comma separated Ip addresses having write permission. No limit if empty.") masterWhiteList []string ) func runMaster(cmd *Command, args []string) bool { if *mMaxCpu < 1 { *mMaxCpu = runtime.NumCPU() } runtime.GOMAXPROCS(*mMaxCpu) if err := util.TestFolderWritable(*metaFolder); err != nil { glog.Fatalf("Check Meta Folder (-mdir) Writable %s : %s", *metaFolder, err) } if *masterWhiteListOption != "" { masterWhiteList = strings.Split(*masterWhiteListOption, ",") } r := mux.NewRouter() ms := weed_server.NewMasterServer(r, *mport, *metaFolder, *volumeSizeLimitMB, *mpulse, *confFile, *defaultReplicaPlacement, *garbageThreshold, masterWhiteList, ) listeningAddress := *masterIp + ":" + strconv.Itoa(*mport) glog.V(0).Infoln("Start Weed Master", util.VERSION, "at", listeningAddress) listener, e := util.NewListener(listeningAddress, time.Duration(*mTimeout)*time.Second) if e != nil { glog.Fatalf(e.Error()) } go func() { time.Sleep(100 * time.Millisecond) if *mPublicIp == "" { if *masterIp == "" { *mPublicIp = "localhost" } else { *mPublicIp = *masterIp } } myPublicMasterAddress := *mPublicIp + ":" + strconv.Itoa(*mport) var peers []string if *masterPeers != "" { peers = strings.Split(*masterPeers, ",") } raftServer := weed_server.NewRaftServer(r, peers, myPublicMasterAddress, *metaFolder, ms.Topo, *mpulse) ms.SetRaftServer(raftServer) }() if e := http.Serve(listener, r); e != nil { glog.Fatalf("Fail to serve:%s", e.Error()) } return true }