138 lines
3.4 KiB
Go
138 lines
3.4 KiB
Go
/*
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Copyright 2013 CoreOS Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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"os/signal"
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"runtime/pprof"
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"github.com/coreos/etcd/log"
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"github.com/coreos/etcd/server"
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"github.com/coreos/etcd/store"
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"github.com/coreos/go-raft"
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)
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func main() {
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parseFlags()
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// Load configuration.
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var config = server.NewConfig()
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if err := config.Load(os.Args[1:]); err != nil {
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log.Fatal("Configuration error:", err)
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}
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// Turn on logging.
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if config.VeryVerbose {
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log.Verbose = true
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raft.SetLogLevel(raft.Debug)
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} else if config.Verbose {
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log.Verbose = true
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}
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// Create data directory if it doesn't already exist.
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if err := os.MkdirAll(config.DataDir, 0744); err != nil {
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log.Fatalf("Unable to create path: %s", err)
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}
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// Load info object.
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info, err := config.Info()
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if err != nil {
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log.Fatal("info:", err)
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}
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if info.Name == "" {
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host, err := os.Hostname()
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if err != nil || host == "" {
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log.Fatal("Machine name required and hostname not set. e.g. '-n=machine_name'")
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}
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log.Warnf("Using hostname %s as the machine name. You must ensure this name is unique among etcd machines.", host)
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info.Name = host
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}
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// Retrieve TLS configuration.
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tlsConfig, err := info.EtcdTLS.Config()
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if err != nil {
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log.Fatal("Client TLS:", err)
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}
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peerTLSConfig, err := info.RaftTLS.Config()
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if err != nil {
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log.Fatal("Peer TLS:", err)
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}
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// Create etcd key-value store and registry.
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store := store.New()
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registry := server.NewRegistry(store)
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// Create peer server.
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ps := server.NewPeerServer(info.Name, config.DataDir, info.RaftURL, info.RaftListenHost, &peerTLSConfig, &info.RaftTLS, registry, store, config.SnapCount)
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ps.MaxClusterSize = config.MaxClusterSize
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ps.RetryTimes = config.MaxRetryAttempts
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// Create client server.
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s := server.New(info.Name, info.EtcdURL, info.EtcdListenHost, &tlsConfig, &info.EtcdTLS, ps, registry, store)
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if err := s.AllowOrigins(config.Cors); err != nil {
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panic(err)
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}
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ps.SetServer(s)
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// Run peer server in separate thread while the client server blocks.
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go func() {
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log.Fatal(ps.ListenAndServe(config.Snapshot, config.Machines))
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}()
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log.Fatal(s.ListenAndServe())
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}
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// Parses non-configuration flags.
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func parseFlags() {
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var versionFlag bool
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var cpuprofile string
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f := flag.NewFlagSet(os.Args[0], -1)
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f.SetOutput(ioutil.Discard)
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f.BoolVar(&versionFlag, "version", false, "print the version and exit")
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f.StringVar(&cpuprofile, "cpuprofile", "", "write cpu profile to file")
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f.Parse(os.Args[1:])
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// Print version if necessary.
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if versionFlag {
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fmt.Println(server.ReleaseVersion)
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os.Exit(0)
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}
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// Begin CPU profiling if specified.
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if cpuprofile != "" {
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f, err := os.Create(cpuprofile)
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if err != nil {
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log.Fatal(err)
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}
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pprof.StartCPUProfile(f)
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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go func() {
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sig := <-c
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log.Infof("captured %v, stopping profiler and exiting..", sig)
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pprof.StopCPUProfile()
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os.Exit(1)
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}()
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}
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}
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