132 lines
4.9 KiB
Go
132 lines
4.9 KiB
Go
package daemon
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import (
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"strings"
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"time"
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"github.com/docker/docker/container"
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daemonevents "github.com/docker/docker/daemon/events"
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"github.com/docker/engine-api/types/events"
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"github.com/docker/engine-api/types/filters"
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"github.com/docker/libnetwork"
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)
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// LogContainerEvent generates an event related to a container with only the default attributes.
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func (daemon *Daemon) LogContainerEvent(container *container.Container, action string) {
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daemon.LogContainerEventWithAttributes(container, action, map[string]string{})
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}
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// LogContainerEventWithAttributes generates an event related to a container with specific given attributes.
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func (daemon *Daemon) LogContainerEventWithAttributes(container *container.Container, action string, attributes map[string]string) {
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copyAttributes(attributes, container.Config.Labels)
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if container.Config.Image != "" {
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attributes["image"] = container.Config.Image
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}
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attributes["name"] = strings.TrimLeft(container.Name, "/")
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actor := events.Actor{
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ID: container.ID,
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Attributes: attributes,
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}
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daemon.EventsService.Log(action, events.ContainerEventType, actor)
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}
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// LogImageEvent generates an event related to an image with only the default attributes.
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func (daemon *Daemon) LogImageEvent(imageID, refName, action string) {
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daemon.LogImageEventWithAttributes(imageID, refName, action, map[string]string{})
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}
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// LogImageEventWithAttributes generates an event related to an image with specific given attributes.
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func (daemon *Daemon) LogImageEventWithAttributes(imageID, refName, action string, attributes map[string]string) {
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img, err := daemon.GetImage(imageID)
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if err == nil && img.Config != nil {
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// image has not been removed yet.
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// it could be missing if the event is `delete`.
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copyAttributes(attributes, img.Config.Labels)
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}
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if refName != "" {
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attributes["name"] = refName
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}
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actor := events.Actor{
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ID: imageID,
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Attributes: attributes,
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}
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daemon.EventsService.Log(action, events.ImageEventType, actor)
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}
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// LogPluginEvent generates an event related to a plugin with only the default attributes.
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func (daemon *Daemon) LogPluginEvent(pluginID, refName, action string) {
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daemon.LogPluginEventWithAttributes(pluginID, refName, action, map[string]string{})
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}
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// LogPluginEventWithAttributes generates an event related to a plugin with specific given attributes.
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func (daemon *Daemon) LogPluginEventWithAttributes(pluginID, refName, action string, attributes map[string]string) {
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attributes["name"] = refName
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actor := events.Actor{
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ID: pluginID,
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Attributes: attributes,
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}
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daemon.EventsService.Log(action, events.PluginEventType, actor)
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}
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// LogVolumeEvent generates an event related to a volume.
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func (daemon *Daemon) LogVolumeEvent(volumeID, action string, attributes map[string]string) {
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actor := events.Actor{
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ID: volumeID,
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Attributes: attributes,
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}
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daemon.EventsService.Log(action, events.VolumeEventType, actor)
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}
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// LogNetworkEvent generates an event related to a network with only the default attributes.
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func (daemon *Daemon) LogNetworkEvent(nw libnetwork.Network, action string) {
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daemon.LogNetworkEventWithAttributes(nw, action, map[string]string{})
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}
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// LogNetworkEventWithAttributes generates an event related to a network with specific given attributes.
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func (daemon *Daemon) LogNetworkEventWithAttributes(nw libnetwork.Network, action string, attributes map[string]string) {
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attributes["name"] = nw.Name()
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attributes["type"] = nw.Type()
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actor := events.Actor{
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ID: nw.ID(),
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Attributes: attributes,
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}
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daemon.EventsService.Log(action, events.NetworkEventType, actor)
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}
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// LogDaemonEventWithAttributes generates an event related to the daemon itself with specific given attributes.
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func (daemon *Daemon) LogDaemonEventWithAttributes(action string, attributes map[string]string) {
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if daemon.EventsService != nil {
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if info, err := daemon.SystemInfo(); err == nil && info.Name != "" {
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attributes["name"] = info.Name
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}
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actor := events.Actor{
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ID: daemon.ID,
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Attributes: attributes,
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}
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daemon.EventsService.Log(action, events.DaemonEventType, actor)
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}
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}
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// SubscribeToEvents returns the currently record of events, a channel to stream new events from, and a function to cancel the stream of events.
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func (daemon *Daemon) SubscribeToEvents(since, until time.Time, filter filters.Args) ([]events.Message, chan interface{}) {
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ef := daemonevents.NewFilter(filter)
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return daemon.EventsService.SubscribeTopic(since, until, ef)
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}
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// UnsubscribeFromEvents stops the event subscription for a client by closing the
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// channel where the daemon sends events to.
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func (daemon *Daemon) UnsubscribeFromEvents(listener chan interface{}) {
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daemon.EventsService.Evict(listener)
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}
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// copyAttributes guarantees that labels are not mutated by event triggers.
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func copyAttributes(attributes, labels map[string]string) {
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if labels == nil {
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return
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}
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for k, v := range labels {
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attributes[k] = v
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}
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}
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