109 lines
2.5 KiB
Go
109 lines
2.5 KiB
Go
package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"github.com/docker/docker/cli"
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"github.com/docker/docker/daemon/config"
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"github.com/docker/docker/dockerversion"
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"github.com/docker/docker/pkg/reexec"
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"github.com/docker/docker/pkg/term"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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func newDaemonCommand() *cobra.Command {
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opts := newDaemonOptions(config.New())
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cmd := &cobra.Command{
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Use: "dockerd [OPTIONS]",
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Short: "A self-sufficient runtime for containers.",
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SilenceUsage: true,
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SilenceErrors: true,
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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opts.flags = cmd.Flags()
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return runDaemon(opts)
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},
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}
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cli.SetupRootCommand(cmd)
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flags := cmd.Flags()
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flags.BoolVarP(&opts.version, "version", "v", false, "Print version information and quit")
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flags.StringVar(&opts.configFile, "config-file", defaultDaemonConfigFile, "Daemon configuration file")
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opts.InstallFlags(flags)
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installConfigFlags(opts.daemonConfig, flags)
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installServiceFlags(flags)
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return cmd
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}
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func runDaemon(opts *daemonOptions) error {
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if opts.version {
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showVersion()
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return nil
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}
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daemonCli := NewDaemonCli()
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// Windows specific settings as these are not defaulted.
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if runtime.GOOS == "windows" {
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if opts.daemonConfig.Pidfile == "" {
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opts.daemonConfig.Pidfile = filepath.Join(opts.daemonConfig.Root, "docker.pid")
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}
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if opts.configFile == "" {
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opts.configFile = filepath.Join(opts.daemonConfig.Root, `config\daemon.json`)
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}
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}
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// On Windows, this may be launching as a service or with an option to
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// register the service.
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stop, runAsService, err := initService(daemonCli)
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if err != nil {
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logrus.Fatal(err)
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}
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if stop {
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return nil
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}
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// If Windows SCM manages the service - no need for PID files
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if runAsService {
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opts.daemonConfig.Pidfile = ""
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}
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err = daemonCli.start(opts)
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notifyShutdown(err)
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return err
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}
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func showVersion() {
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fmt.Printf("Docker version %s, build %s\n", dockerversion.Version, dockerversion.GitCommit)
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}
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func main() {
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if reexec.Init() {
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return
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}
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// Set terminal emulation based on platform as required.
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_, stdout, stderr := term.StdStreams()
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// @jhowardmsft - maybe there is a historic reason why on non-Windows, stderr is used
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// here. However, on Windows it makes no sense and there is no need.
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if runtime.GOOS == "windows" {
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logrus.SetOutput(stdout)
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} else {
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logrus.SetOutput(stderr)
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}
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cmd := newDaemonCommand()
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cmd.SetOutput(stdout)
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if err := cmd.Execute(); err != nil {
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fmt.Fprintf(stderr, "%s\n", err)
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os.Exit(1)
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}
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}
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