mirror of https://github.com/containers/podman.git
101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
package libpod
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import (
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"os"
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"github.com/containers/libpod/libpod/events"
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"github.com/hpcloud/tail"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// newContainerEvent creates a new event based on a container
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func (c *Container) newContainerEvent(status events.Status) {
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e := events.NewEvent(status)
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e.ID = c.ID()
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e.Name = c.Name()
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e.Image = c.config.RootfsImageName
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e.Type = events.Container
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if err := e.Write(c.runtime.config.EventsLogFilePath); err != nil {
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logrus.Errorf("unable to write event to %s", c.runtime.config.EventsLogFilePath)
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}
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}
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// newContainerExitedEvent creates a new event for a container's death
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func (c *Container) newContainerExitedEvent(exitCode int32) {
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e := events.NewEvent(events.Exited)
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e.ID = c.ID()
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e.Name = c.Name()
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e.Image = c.config.RootfsImageName
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e.Type = events.Container
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e.ContainerExitCode = int(exitCode)
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if err := e.Write(c.runtime.config.EventsLogFilePath); err != nil {
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logrus.Errorf("unable to write event to %s", c.runtime.config.EventsLogFilePath)
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}
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}
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// newPodEvent creates a new event for a libpod pod
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func (p *Pod) newPodEvent(status events.Status) {
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e := events.NewEvent(status)
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e.ID = p.ID()
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e.Name = p.Name()
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e.Type = events.Pod
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if err := e.Write(p.runtime.config.EventsLogFilePath); err != nil {
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logrus.Errorf("unable to write event to %s", p.runtime.config.EventsLogFilePath)
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}
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}
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// newVolumeEvent creates a new event for a libpod volume
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func (v *Volume) newVolumeEvent(status events.Status) {
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e := events.NewEvent(status)
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e.Name = v.Name()
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e.Type = events.Volume
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if err := e.Write(v.runtime.config.EventsLogFilePath); err != nil {
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logrus.Errorf("unable to write event to %s", v.runtime.config.EventsLogFilePath)
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}
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}
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// Events is a wrapper function for everyone to begin tailing the events log
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// with options
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func (r *Runtime) Events(fromStart, stream bool, options []events.EventFilter, eventChannel chan *events.Event) error {
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if !r.valid {
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return ErrRuntimeStopped
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}
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t, err := r.getTail(fromStart, stream)
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if err != nil {
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return err
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}
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for line := range t.Lines {
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event, err := events.NewEventFromString(line.Text)
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if err != nil {
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return err
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}
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switch event.Type {
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case events.Image, events.Volume, events.Pod, events.Container:
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// no-op
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default:
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return errors.Errorf("event type %s is not valid in %s", event.Type.String(), r.config.EventsLogFilePath)
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}
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include := true
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for _, filter := range options {
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include = include && filter(event)
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}
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if include {
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eventChannel <- event
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}
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}
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close(eventChannel)
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return nil
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}
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func (r *Runtime) getTail(fromStart, stream bool) (*tail.Tail, error) {
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reopen := true
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seek := tail.SeekInfo{Offset: 0, Whence: os.SEEK_END}
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if fromStart || !stream {
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seek.Whence = 0
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reopen = false
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}
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return tail.TailFile(r.config.EventsLogFilePath, tail.Config{ReOpen: reopen, Follow: stream, Location: &seek, Logger: tail.DiscardingLogger})
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}
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