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path: root/cmd/dockerd/docker_windows.go
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package main

import (
	"io"
	"path/filepath"

	"github.com/Microsoft/go-winio/pkg/etwlogrus"
	"github.com/sirupsen/logrus"
)

func runDaemon(opts *daemonOptions) error {
	daemonCli := NewDaemonCli()

	// On Windows, this may be launching as a service or with an option to
	// register the service.
	stop, runAsService, err := initService(daemonCli)
	if err != nil {
		return err
	}

	if stop {
		return nil
	}

	// Windows specific settings as these are not defaulted.
	if opts.configFile == "" {
		opts.configFile = filepath.Join(opts.daemonConfig.Root, "config", "daemon.json")
	}
	if runAsService {
		// If Windows SCM manages the service - no need for PID files
		opts.daemonConfig.Pidfile = ""
	} else if opts.daemonConfig.Pidfile == "" {
		opts.daemonConfig.Pidfile = filepath.Join(opts.daemonConfig.Root, "docker.pid")
	}

	err = daemonCli.start(opts)
	notifyShutdown(err)
	return err
}

func initLogging(stdout, _ io.Writer) {
	// Maybe there is a historic reason why on non-Windows, stderr is used
	// for output. However, on Windows it makes no sense and there is no need.
	logrus.SetOutput(stdout)

	// Provider ID: {6996f090-c5de-5082-a81e-5841acc3a635}
	// Hook isn't closed explicitly, as it will exist until process exit.
	// GUID is generated based on name - see Microsoft/go-winio/tools/etw-provider-gen.
	if hook, err := etwlogrus.NewHook("Moby"); err == nil {
		logrus.AddHook(hook)
	}
	return
}