func (cli *DaemonCli) reloadConfig() {
reload := func(config *daemon.Config) {
// Reload the authorization plugin
cli.authzMiddleware.SetPlugins(config.AuthorizationPlugins)
if err := cli.d.Reload(config); err != nil {
logrus.Errorf("Error reconfiguring the daemon: %v", err)
return
}
if config.IsValueSet("debug") {
debugEnabled := utils.IsDebugEnabled()
switch {
case debugEnabled && !config.Debug: // disable debug
utils.DisableDebug()
cli.api.DisableProfiler()
case config.Debug && !debugEnabled: // enable debug
utils.EnableDebug()
cli.api.EnableProfiler()
}
}
}
if err := daemon.ReloadConfiguration(*cli.configFile, cli.flags, reload); err != nil {
logrus.Error(err)
}
}
// setupConfigReloadTrap configures the USR2 signal to reload the configuration.
func setupConfigReloadTrap(configFile string, flags *mflag.FlagSet, reload func(*daemon.Config)) {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGHUP)
go func() {
for range c {
daemon.ReloadConfiguration(configFile, flags, reload)
}
}()
}
// setupConfigReloadTrap configures a Win32 event to reload the configuration.
func setupConfigReloadTrap(configFile string, flags *mflag.FlagSet, reload func(*daemon.Config)) {
go func() {
sa := syscall.SecurityAttributes{
Length: 0,
}
ev := "Global\\docker-daemon-config-" + fmt.Sprint(os.Getpid())
if h, _ := system.CreateEvent(&sa, false, false, ev); h != 0 {
logrus.Debugf("Config reload - waiting signal at %s", ev)
for {
syscall.WaitForSingleObject(h, syscall.INFINITE)
daemon.ReloadConfiguration(configFile, flags, reload)
}
}
}()
}
func TestLoadDaemonConfigWithTrueDefaultValues(t *testing.T) {
c := &daemon.Config{}
common := &cli.CommonFlags{}
flags := mflag.NewFlagSet("test", mflag.ContinueOnError)
flags.BoolVar(&c.EnableUserlandProxy, []string{"-userland-proxy"}, true, "")
f, err := ioutil.TempFile("", "docker-config-")
if err != nil {
t.Fatal(err)
}
if err := flags.ParseFlags([]string{}, false); err != nil {
t.Fatal(err)
}
configFile := f.Name()
f.Write([]byte(`{
"userland-proxy": false
}`))
f.Close()
loadedConfig, err := loadDaemonCliConfig(c, flags, common, configFile)
if err != nil {
t.Fatal(err)
}
if loadedConfig == nil {
t.Fatal("expected configuration, got nil")
}
if loadedConfig.EnableUserlandProxy {
t.Fatal("expected userland proxy to be disabled, got enabled")
}
// make sure reloading doesn't generate configuration
// conflicts after normalizing boolean values.
err = daemon.ReloadConfiguration(configFile, flags, func(reloadedConfig *daemon.Config) {
if reloadedConfig.EnableUserlandProxy {
t.Fatal("expected userland proxy to be disabled, got enabled")
}
})
if err != nil {
t.Fatal(err)
}
}
func TestLoadDaemonConfigWithTrueDefaultValues(t *testing.T) {
content := `{ "userland-proxy": false }`
tempFile := tempfile.NewTempFile(t, "config", content)
defer tempFile.Remove()
opts := defaultOptions(tempFile.Name())
loadedConfig, err := loadDaemonCliConfig(opts)
assert.NilError(t, err)
assert.NotNil(t, loadedConfig)
assert.NotNil(t, loadedConfig.ClusterOpts)
assert.Equal(t, loadedConfig.EnableUserlandProxy, false)
// make sure reloading doesn't generate configuration
// conflicts after normalizing boolean values.
reload := func(reloadedConfig *daemon.Config) {
assert.Equal(t, reloadedConfig.EnableUserlandProxy, false)
}
assert.NilError(t, daemon.ReloadConfiguration(opts.configFile, opts.flags, reload))
}
func (cli *DaemonCli) reloadConfig() {
reload := func(config *daemon.Config) {
if err := cli.d.Reload(config); err != nil {
logrus.Errorf("Error reconfiguring the daemon: %v", err)
return
}
if config.IsValueSet("debug") {
debugEnabled := utils.IsDebugEnabled()
switch {
case debugEnabled && !config.Debug: // disable debug
utils.DisableDebug()
cli.api.DisableProfiler()
case config.Debug && !debugEnabled: // enable debug
utils.EnableDebug()
cli.api.EnableProfiler()
}
}
}
if err := daemon.ReloadConfiguration(*cli.configFile, flag.CommandLine, reload); err != nil {
logrus.Error(err)
}
}