github.com/kula/etcd@v0.2.1-0.20131226070625-e96234382ac0/etcd.go (about) 1 /* 2 Copyright 2013 CoreOS Inc. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package main 18 19 import ( 20 "fmt" 21 "os" 22 "time" 23 24 "github.com/coreos/etcd/log" 25 "github.com/coreos/etcd/server" 26 "github.com/coreos/etcd/store" 27 "github.com/coreos/raft" 28 ) 29 30 func main() { 31 // Load configuration. 32 var config = server.NewConfig() 33 if err := config.Load(os.Args[1:]); err != nil { 34 fmt.Println(server.Usage() + "\n") 35 fmt.Println(err.Error() + "\n") 36 os.Exit(1) 37 } else if config.ShowVersion { 38 fmt.Println(server.ReleaseVersion) 39 os.Exit(0) 40 } else if config.ShowHelp { 41 fmt.Println(server.Usage() + "\n") 42 os.Exit(0) 43 } 44 45 // Enable options. 46 if config.VeryVerbose { 47 log.Verbose = true 48 raft.SetLogLevel(raft.Debug) 49 } else if config.Verbose { 50 log.Verbose = true 51 } 52 if config.CPUProfileFile != "" { 53 profile(config.CPUProfileFile) 54 } 55 56 if config.DataDir == "" { 57 log.Fatal("The data dir was not set and could not be guessed from machine name") 58 } 59 60 // Create data directory if it doesn't already exist. 61 if err := os.MkdirAll(config.DataDir, 0744); err != nil { 62 log.Fatalf("Unable to create path: %s", err) 63 } 64 65 // Load info object. 66 info, err := config.Info() 67 if err != nil { 68 log.Fatal("info:", err) 69 } 70 71 // Retrieve TLS configuration. 72 tlsConfig, err := info.EtcdTLS.Config() 73 if err != nil { 74 log.Fatal("Client TLS:", err) 75 } 76 peerTLSConfig, err := info.RaftTLS.Config() 77 if err != nil { 78 log.Fatal("Peer TLS:", err) 79 } 80 81 // Create etcd key-value store and registry. 82 store := store.New() 83 registry := server.NewRegistry(store) 84 85 // Create peer server. 86 ps := server.NewPeerServer(info.Name, config.DataDir, info.RaftURL, info.RaftListenHost, &peerTLSConfig, &info.RaftTLS, registry, store, config.SnapshotCount) 87 ps.MaxClusterSize = config.MaxClusterSize 88 ps.RetryTimes = config.MaxRetryAttempts 89 if config.Peer.HeartbeatTimeout > 0 { 90 ps.HeartbeatTimeout = time.Duration(config.Peer.HeartbeatTimeout) * time.Millisecond 91 } 92 if config.Peer.ElectionTimeout > 0 { 93 ps.ElectionTimeout = time.Duration(config.Peer.ElectionTimeout) * time.Millisecond 94 } 95 96 // Create client server. 97 s := server.New(info.Name, info.EtcdURL, info.EtcdListenHost, &tlsConfig, &info.EtcdTLS, ps, registry, store) 98 if err := s.AllowOrigins(config.CorsOrigins); err != nil { 99 panic(err) 100 } 101 102 ps.SetServer(s) 103 104 // Run peer server in separate thread while the client server blocks. 105 go func() { 106 log.Fatal(ps.ListenAndServe(config.Snapshot, config.Peers)) 107 }() 108 log.Fatal(s.ListenAndServe()) 109 }