126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
// DEPRECATION NOTICE. PLEASE DO NOT ADD ANYTHING TO THIS FILE.
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//
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// For additional commments see server/server.go
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//
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package server
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import (
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"fmt"
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"log"
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"os"
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gosignal "os/signal"
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"sync/atomic"
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"syscall"
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"github.com/docker/docker/daemon"
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"github.com/docker/docker/daemonconfig"
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"github.com/docker/docker/engine"
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"github.com/docker/docker/utils"
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)
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func (srv *Server) handlerWrap(h engine.Handler) engine.Handler {
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return func(job *engine.Job) engine.Status {
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if !srv.IsRunning() {
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return job.Errorf("Server is not running")
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}
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srv.tasks.Add(1)
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defer srv.tasks.Done()
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return h(job)
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}
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}
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func InitPidfile(job *engine.Job) engine.Status {
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if len(job.Args) == 0 {
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return job.Error(fmt.Errorf("no pidfile provided to initialize"))
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}
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job.Logf("Creating pidfile")
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if err := utils.CreatePidFile(job.Args[0]); err != nil {
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return job.Error(err)
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}
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return engine.StatusOK
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}
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// jobInitApi runs the remote api server `srv` as a daemon,
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// Only one api server can run at the same time - this is enforced by a pidfile.
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// The signals SIGINT, SIGQUIT and SIGTERM are intercepted for cleanup.
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func InitServer(job *engine.Job) engine.Status {
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job.Logf("Creating server")
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srv, err := NewServer(job.Eng, daemonconfig.ConfigFromJob(job))
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if err != nil {
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return job.Error(err)
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}
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job.Logf("Setting up signal traps")
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c := make(chan os.Signal, 1)
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signals := []os.Signal{os.Interrupt, syscall.SIGTERM}
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if os.Getenv("DEBUG") == "" {
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signals = append(signals, syscall.SIGQUIT)
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}
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gosignal.Notify(c, signals...)
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go func() {
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interruptCount := uint32(0)
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for sig := range c {
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go func(sig os.Signal) {
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log.Printf("Received signal '%v', starting shutdown of docker...\n", sig)
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switch sig {
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case os.Interrupt, syscall.SIGTERM:
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// If the user really wants to interrupt, let him do so.
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if atomic.LoadUint32(&interruptCount) < 3 {
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atomic.AddUint32(&interruptCount, 1)
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// Initiate the cleanup only once
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if atomic.LoadUint32(&interruptCount) == 1 {
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utils.RemovePidFile(srv.daemon.Config().Pidfile)
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srv.Close()
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} else {
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return
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}
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} else {
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log.Printf("Force shutdown of docker, interrupting cleanup\n")
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}
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case syscall.SIGQUIT:
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}
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os.Exit(128 + int(sig.(syscall.Signal)))
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}(sig)
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}
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}()
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job.Eng.Hack_SetGlobalVar("httpapi.server", srv)
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job.Eng.Hack_SetGlobalVar("httpapi.daemon", srv.daemon)
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for name, handler := range map[string]engine.Handler{
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"info": srv.DockerInfo,
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"build": srv.Build,
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"pull": srv.ImagePull,
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"push": srv.ImagePush,
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} {
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if err := job.Eng.Register(name, srv.handlerWrap(handler)); err != nil {
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return job.Error(err)
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}
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}
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// Install image-related commands from the image subsystem.
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// See `graph/service.go`
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if err := srv.daemon.Repositories().Install(job.Eng); err != nil {
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return job.Error(err)
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}
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// Install daemon-related commands from the daemon subsystem.
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// See `daemon/`
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if err := srv.daemon.Install(job.Eng); err != nil {
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return job.Error(err)
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}
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srv.SetRunning(true)
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return engine.StatusOK
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}
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func NewServer(eng *engine.Engine, config *daemonconfig.Config) (*Server, error) {
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daemon, err := daemon.NewDaemon(config, eng)
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if err != nil {
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return nil, err
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}
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srv := &Server{
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Eng: eng,
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daemon: daemon,
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pullingPool: make(map[string]chan struct{}),
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pushingPool: make(map[string]chan struct{}),
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}
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daemon.SetServer(srv)
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return srv, nil
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}
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