// jobInitApi runs the remote api server `srv` as a daemon,
// Only one api server can run at the same time - this is enforced by a pidfile.
// The signals SIGINT, SIGKILL and SIGTERM are intercepted for cleanup.
func jobInitApi(job *engine.Job) string {
job.Logf("Creating server")
srv, err := NewServer(job.Eng, ConfigFromJob(job))
if err != nil {
return err.Error()
}
if srv.runtime.config.Pidfile != "" {
job.Logf("Creating pidfile")
if err := utils.CreatePidFile(srv.runtime.config.Pidfile); err != nil {
log.Fatal(err)
}
}
job.Logf("Setting up signal traps")
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, os.Kill, os.Signal(syscall.SIGTERM))
go func() {
sig := <-c
log.Printf("Received signal '%v', exiting\n", sig)
utils.RemovePidFile(srv.runtime.config.Pidfile)
srv.Close()
os.Exit(0)
}()
job.Eng.Hack_SetGlobalVar("httpapi.server", srv)
if err := job.Eng.Register("create", srv.ContainerCreate); err != nil {
return err.Error()
}
if err := job.Eng.Register("start", srv.ContainerStart); err != nil {
return err.Error()
}
if err := job.Eng.Register("serveapi", srv.ListenAndServe); err != nil {
return err.Error()
}
return "0"
}
// Daemon runs the remote api server `srv` as a daemon,
// Only one api server can run at the same time - this is enforced by a pidfile.
// The signals SIGINT, SIGKILL and SIGTERM are intercepted for cleanup.
func (srv *Server) Daemon() error {
if err := utils.CreatePidFile(srv.runtime.config.Pidfile); err != nil {
log.Fatal(err)
}
defer utils.RemovePidFile(srv.runtime.config.Pidfile)
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, os.Kill, os.Signal(syscall.SIGTERM))
go func() {
sig := <-c
log.Printf("Received signal '%v', exiting\n", sig)
utils.RemovePidFile(srv.runtime.config.Pidfile)
srv.Close()
os.Exit(0)
}()
protoAddrs := srv.runtime.config.ProtoAddresses
chErrors := make(chan error, len(protoAddrs))
for _, protoAddr := range protoAddrs {
protoAddrParts := strings.SplitN(protoAddr, "://", 2)
switch protoAddrParts[0] {
case "unix":
if err := syscall.Unlink(protoAddrParts[1]); err != nil && !os.IsNotExist(err) {
log.Fatal(err)
}
case "tcp":
if !strings.HasPrefix(protoAddrParts[1], "127.0.0.1") {
log.Println("/!\\ DON'T BIND ON ANOTHER IP ADDRESS THAN 127.0.0.1 IF YOU DON'T KNOW WHAT YOU'RE DOING /!\\")
}
default:
return fmt.Errorf("Invalid protocol format.")
}
go func() {
chErrors <- ListenAndServe(protoAddrParts[0], protoAddrParts[1], srv, true)
}()
}
for i := 0; i < len(protoAddrs); i += 1 {
err := <-chErrors
if err != nil {
return err
}
}
return nil
}