package daemon
 
 import (
 	"encoding/json"
 	"fmt"
 
 	"github.com/docker/docker/daemon/config"
 	"github.com/docker/docker/daemon/discovery"

 	"github.com/sirupsen/logrus"

 )
 
 // Reload reads configuration changes and modifies the
 // daemon according to those changes.
 // These are the settings that Reload changes:
 // - Platform runtime
 // - Daemon debug log level
 // - Daemon max concurrent downloads
 // - Daemon max concurrent uploads
 // - Daemon shutdown timeout (in seconds)
 // - Cluster discovery (reconfigure and restart)
 // - Daemon labels
 // - Insecure registries
 // - Registry mirrors
 // - Daemon live restore
 func (daemon *Daemon) Reload(conf *config.Config) (err error) {
 	daemon.configStore.Lock()
 	attributes := map[string]string{}
 
 	defer func() {

 		jsonString, _ := json.Marshal(daemon.configStore)
 

 		// we're unlocking here, because
 		// LogDaemonEventWithAttributes() -> SystemInfo() -> GetAllRuntimes()
 		// holds that lock too.
 		daemon.configStore.Unlock()
 		if err == nil {

 			logrus.Infof("Reloaded configuration: %s", jsonString)

 			daemon.LogDaemonEventWithAttributes("reload", attributes)
 		}
 	}()
 

 	if err := daemon.reloadPlatform(conf, attributes); err != nil {
 		return err
 	}

 	daemon.reloadDebug(conf, attributes)

 	daemon.reloadMaxConcurrentDownloadsAndUploads(conf, attributes)

 	daemon.reloadShutdownTimeout(conf, attributes)
 
 	if err := daemon.reloadClusterDiscovery(conf, attributes); err != nil {
 		return err
 	}
 	if err := daemon.reloadLabels(conf, attributes); err != nil {
 		return err
 	}

 	if err := daemon.reloadAllowNondistributableArtifacts(conf, attributes); err != nil {
 		return err
 	}

 	if err := daemon.reloadInsecureRegistries(conf, attributes); err != nil {
 		return err
 	}
 	if err := daemon.reloadRegistryMirrors(conf, attributes); err != nil {
 		return err
 	}
 	if err := daemon.reloadLiveRestore(conf, attributes); err != nil {
 		return err
 	}

 	return daemon.reloadNetworkDiagnosticPort(conf, attributes)

 }
 
 // reloadDebug updates configuration with Debug option
 // and updates the passed attributes
 func (daemon *Daemon) reloadDebug(conf *config.Config, attributes map[string]string) {
 	// update corresponding configuration
 	if conf.IsValueSet("debug") {
 		daemon.configStore.Debug = conf.Debug
 	}
 	// prepare reload event attributes with updatable configurations
 	attributes["debug"] = fmt.Sprintf("%t", daemon.configStore.Debug)
 }
 

 // reloadMaxConcurrentDownloadsAndUploads updates configuration with max concurrent

 // download and upload options and updates the passed attributes

 func (daemon *Daemon) reloadMaxConcurrentDownloadsAndUploads(conf *config.Config, attributes map[string]string) {

 	// If no value is set for max-concurrent-downloads we assume it is the default value
 	// We always "reset" as the cost is lightweight and easy to maintain.
 	if conf.IsValueSet("max-concurrent-downloads") && conf.MaxConcurrentDownloads != nil {
 		*daemon.configStore.MaxConcurrentDownloads = *conf.MaxConcurrentDownloads
 	} else {
 		maxConcurrentDownloads := config.DefaultMaxConcurrentDownloads
 		daemon.configStore.MaxConcurrentDownloads = &maxConcurrentDownloads
 	}
 	logrus.Debugf("Reset Max Concurrent Downloads: %d", *daemon.configStore.MaxConcurrentDownloads)
 	if daemon.downloadManager != nil {
 		daemon.downloadManager.SetConcurrency(*daemon.configStore.MaxConcurrentDownloads)
 	}
 
 	// prepare reload event attributes with updatable configurations
 	attributes["max-concurrent-downloads"] = fmt.Sprintf("%d", *daemon.configStore.MaxConcurrentDownloads)
 
 	// If no value is set for max-concurrent-upload we assume it is the default value
 	// We always "reset" as the cost is lightweight and easy to maintain.
 	if conf.IsValueSet("max-concurrent-uploads") && conf.MaxConcurrentUploads != nil {
 		*daemon.configStore.MaxConcurrentUploads = *conf.MaxConcurrentUploads
 	} else {
 		maxConcurrentUploads := config.DefaultMaxConcurrentUploads
 		daemon.configStore.MaxConcurrentUploads = &maxConcurrentUploads
 	}
 	logrus.Debugf("Reset Max Concurrent Uploads: %d", *daemon.configStore.MaxConcurrentUploads)
 	if daemon.uploadManager != nil {
 		daemon.uploadManager.SetConcurrency(*daemon.configStore.MaxConcurrentUploads)
 	}
 
 	// prepare reload event attributes with updatable configurations
 	attributes["max-concurrent-uploads"] = fmt.Sprintf("%d", *daemon.configStore.MaxConcurrentUploads)
 }
 
 // reloadShutdownTimeout updates configuration with daemon shutdown timeout option
 // and updates the passed attributes
 func (daemon *Daemon) reloadShutdownTimeout(conf *config.Config, attributes map[string]string) {
 	// update corresponding configuration
 	if conf.IsValueSet("shutdown-timeout") {
 		daemon.configStore.ShutdownTimeout = conf.ShutdownTimeout
 		logrus.Debugf("Reset Shutdown Timeout: %d", daemon.configStore.ShutdownTimeout)
 	}
 
 	// prepare reload event attributes with updatable configurations
 	attributes["shutdown-timeout"] = fmt.Sprintf("%d", daemon.configStore.ShutdownTimeout)
 }
 
 // reloadClusterDiscovery updates configuration with cluster discovery options
 // and updates the passed attributes
 func (daemon *Daemon) reloadClusterDiscovery(conf *config.Config, attributes map[string]string) (err error) {
 	defer func() {
 		// prepare reload event attributes with updatable configurations
 		attributes["cluster-store"] = conf.ClusterStore
 		attributes["cluster-advertise"] = conf.ClusterAdvertise
 
 		attributes["cluster-store-opts"] = "{}"
 		if daemon.configStore.ClusterOpts != nil {
 			opts, err2 := json.Marshal(conf.ClusterOpts)
 			if err != nil {
 				err = err2
 			}
 			attributes["cluster-store-opts"] = string(opts)
 		}
 	}()
 
 	newAdvertise := conf.ClusterAdvertise
 	newClusterStore := daemon.configStore.ClusterStore
 	if conf.IsValueSet("cluster-advertise") {
 		if conf.IsValueSet("cluster-store") {
 			newClusterStore = conf.ClusterStore
 		}
 		newAdvertise, err = config.ParseClusterAdvertiseSettings(newClusterStore, conf.ClusterAdvertise)
 		if err != nil && err != discovery.ErrDiscoveryDisabled {
 			return err
 		}
 	}
 
 	if daemon.clusterProvider != nil {
 		if err := conf.IsSwarmCompatible(); err != nil {
 			return err
 		}
 	}
 
 	// check discovery modifications
 	if !config.ModifiedDiscoverySettings(daemon.configStore, newClusterStore, newAdvertise, conf.ClusterOpts) {
 		return nil
 	}
 
 	// enable discovery for the first time if it was not previously enabled
 	if daemon.discoveryWatcher == nil {
 		discoveryWatcher, err := discovery.Init(newClusterStore, newAdvertise, conf.ClusterOpts)
 		if err != nil {
 			return fmt.Errorf("failed to initialize discovery: %v", err)
 		}
 		daemon.discoveryWatcher = discoveryWatcher
 	} else if err == discovery.ErrDiscoveryDisabled {
 		// disable discovery if it was previously enabled and it's disabled now
 		daemon.discoveryWatcher.Stop()
 	} else if err = daemon.discoveryWatcher.Reload(conf.ClusterStore, newAdvertise, conf.ClusterOpts); err != nil {
 		// reload discovery
 		return err
 	}
 
 	daemon.configStore.ClusterStore = newClusterStore
 	daemon.configStore.ClusterOpts = conf.ClusterOpts
 	daemon.configStore.ClusterAdvertise = newAdvertise
 
 	if daemon.netController == nil {
 		return nil
 	}
 	netOptions, err := daemon.networkOptions(daemon.configStore, daemon.PluginStore, nil)
 	if err != nil {
 		logrus.WithError(err).Warnf("failed to get options with network controller")
 		return nil
 	}
 	err = daemon.netController.ReloadConfiguration(netOptions...)
 	if err != nil {
 		logrus.Warnf("Failed to reload configuration with network controller: %v", err)
 	}
 	return nil
 }
 
 // reloadLabels updates configuration with engine labels
 // and updates the passed attributes
 func (daemon *Daemon) reloadLabels(conf *config.Config, attributes map[string]string) error {
 	// update corresponding configuration
 	if conf.IsValueSet("labels") {
 		daemon.configStore.Labels = conf.Labels
 	}
 
 	// prepare reload event attributes with updatable configurations
 	if daemon.configStore.Labels != nil {
 		labels, err := json.Marshal(daemon.configStore.Labels)
 		if err != nil {
 			return err
 		}
 		attributes["labels"] = string(labels)
 	} else {
 		attributes["labels"] = "[]"
 	}
 
 	return nil
 }
 

 // reloadAllowNondistributableArtifacts updates the configuration with allow-nondistributable-artifacts options
 // and updates the passed attributes.
 func (daemon *Daemon) reloadAllowNondistributableArtifacts(conf *config.Config, attributes map[string]string) error {
 	// Update corresponding configuration.
 	if conf.IsValueSet("allow-nondistributable-artifacts") {
 		daemon.configStore.AllowNondistributableArtifacts = conf.AllowNondistributableArtifacts
 		if err := daemon.RegistryService.LoadAllowNondistributableArtifacts(conf.AllowNondistributableArtifacts); err != nil {
 			return err
 		}
 	}
 
 	// Prepare reload event attributes with updatable configurations.
 	if daemon.configStore.AllowNondistributableArtifacts != nil {
 		v, err := json.Marshal(daemon.configStore.AllowNondistributableArtifacts)
 		if err != nil {
 			return err
 		}
 		attributes["allow-nondistributable-artifacts"] = string(v)
 	} else {
 		attributes["allow-nondistributable-artifacts"] = "[]"
 	}
 
 	return nil
 }
 

 // reloadInsecureRegistries updates configuration with insecure registry option
 // and updates the passed attributes
 func (daemon *Daemon) reloadInsecureRegistries(conf *config.Config, attributes map[string]string) error {
 	// update corresponding configuration
 	if conf.IsValueSet("insecure-registries") {
 		daemon.configStore.InsecureRegistries = conf.InsecureRegistries
 		if err := daemon.RegistryService.LoadInsecureRegistries(conf.InsecureRegistries); err != nil {
 			return err
 		}
 	}
 
 	// prepare reload event attributes with updatable configurations
 	if daemon.configStore.InsecureRegistries != nil {
 		insecureRegistries, err := json.Marshal(daemon.configStore.InsecureRegistries)
 		if err != nil {
 			return err
 		}
 		attributes["insecure-registries"] = string(insecureRegistries)
 	} else {
 		attributes["insecure-registries"] = "[]"
 	}
 
 	return nil
 }
 
 // reloadRegistryMirrors updates configuration with registry mirror options
 // and updates the passed attributes
 func (daemon *Daemon) reloadRegistryMirrors(conf *config.Config, attributes map[string]string) error {
 	// update corresponding configuration
 	if conf.IsValueSet("registry-mirrors") {
 		daemon.configStore.Mirrors = conf.Mirrors
 		if err := daemon.RegistryService.LoadMirrors(conf.Mirrors); err != nil {
 			return err
 		}
 	}
 
 	// prepare reload event attributes with updatable configurations
 	if daemon.configStore.Mirrors != nil {
 		mirrors, err := json.Marshal(daemon.configStore.Mirrors)
 		if err != nil {
 			return err
 		}
 		attributes["registry-mirrors"] = string(mirrors)
 	} else {
 		attributes["registry-mirrors"] = "[]"
 	}
 
 	return nil
 }
 
 // reloadLiveRestore updates configuration with live retore option
 // and updates the passed attributes
 func (daemon *Daemon) reloadLiveRestore(conf *config.Config, attributes map[string]string) error {
 	// update corresponding configuration
 	if conf.IsValueSet("live-restore") {
 		daemon.configStore.LiveRestoreEnabled = conf.LiveRestoreEnabled
 	}
 
 	// prepare reload event attributes with updatable configurations
 	attributes["live-restore"] = fmt.Sprintf("%t", daemon.configStore.LiveRestoreEnabled)
 	return nil
 }

 
 // reloadNetworkDiagnosticPort updates the network controller starting the diagnose mode if the config is valid
 func (daemon *Daemon) reloadNetworkDiagnosticPort(conf *config.Config, attributes map[string]string) error {
 	if conf == nil || daemon.netController == nil {
 		return nil
 	}
 	// Enable the network diagnose if the flag is set with a valid port withing the range
 	if conf.IsValueSet("network-diagnostic-port") && conf.NetworkDiagnosticPort > 0 && conf.NetworkDiagnosticPort < 65536 {
 		logrus.Warnf("Calling the diagnostic start with %d", conf.NetworkDiagnosticPort)
 		daemon.netController.StartDiagnose(conf.NetworkDiagnosticPort)
 	} else {
 		daemon.netController.StopDiagnose()
 	}
 	return nil
 }