package events import ( "encoding/json" "errors" "fmt" "time" "github.com/containers/storage/pkg/stringid" ) // ErrNoJournaldLogging indicates that there is no journald logging // supported (requires libsystemd) var ErrNoJournaldLogging = errors.New("no support for journald logging") // String returns a string representation of EventerType func (et EventerType) String() string { switch et { case LogFile: return "file" case Journald: return "journald" case Memory: return "memory" case Null: return "none" default: return "invalid" } } // IsValidEventer checks if the given string is a valid eventer type. func IsValidEventer(eventer string) bool { switch eventer { case LogFile.String(): return true case Journald.String(): return true case Memory.String(): return true case Null.String(): return true default: return false } } // NewEvent creates an event struct and populates with // the given status and time. func NewEvent(status Status) Event { return Event{ Status: status, Time: time.Now(), } } // Recycle checks if the event log has reach a limit and if so // renames the current log and starts a new one. The remove bool // indicates the old log file should be deleted. func (e *Event) Recycle(path string, remove bool) error { return errors.New("not implemented") } // ToJSONString returns the event as a json'ified string func (e *Event) ToJSONString() (string, error) { b, err := json.Marshal(e) return string(b), err } // ToHumanReadable returns human-readable event as a formatted string func (e *Event) ToHumanReadable(truncate bool) string { var humanFormat string id := e.ID if truncate { id = stringid.TruncateID(id) } switch e.Type { case Container, Pod: humanFormat = fmt.Sprintf("%s %s %s %s (image=%s, name=%s", e.Time, e.Type, e.Status, id, e.Image, e.Name) if e.PodID != "" { humanFormat += fmt.Sprintf(", pod_id=%s", e.PodID) } if e.HealthStatus != "" { humanFormat += fmt.Sprintf(", health_status=%s", e.HealthStatus) } // check if the container has labels and add it to the output if len(e.Attributes) > 0 { for k, v := range e.Attributes { humanFormat += fmt.Sprintf(", %s=%s", k, v) } } humanFormat += ")" case Network: humanFormat = fmt.Sprintf("%s %s %s %s (container=%s, name=%s)", e.Time, e.Type, e.Status, id, id, e.Network) case Image: humanFormat = fmt.Sprintf("%s %s %s %s %s", e.Time, e.Type, e.Status, id, e.Name) case System: if e.Name != "" { humanFormat = fmt.Sprintf("%s %s %s %s", e.Time, e.Type, e.Status, e.Name) } else { humanFormat = fmt.Sprintf("%s %s %s", e.Time, e.Type, e.Status) } case Volume, Machine: humanFormat = fmt.Sprintf("%s %s %s %s", e.Time, e.Type, e.Status, e.Name) } return humanFormat } // NewEventFromString takes stringified json and converts // it to an event func newEventFromJSONString(event string) (*Event, error) { e := new(Event) if err := json.Unmarshal([]byte(event), e); err != nil { return nil, err } return e, nil } // String converts a Type to a string func (t Type) String() string { return string(t) } // String converts a status to a string func (s Status) String() string { return string(s) } // StringToType converts string to an EventType func StringToType(name string) (Type, error) { switch name { case Container.String(): return Container, nil case Image.String(): return Image, nil case Machine.String(): return Machine, nil case Network.String(): return Network, nil case Pod.String(): return Pod, nil case System.String(): return System, nil case Volume.String(): return Volume, nil case "": return "", ErrEventTypeBlank } return "", fmt.Errorf("unknown event type %q", name) } // StringToStatus converts a string to an Event Status func StringToStatus(name string) (Status, error) { switch name { case Attach.String(): return Attach, nil case AutoUpdate.String(): return AutoUpdate, nil case Build.String(): return Build, nil case Checkpoint.String(): return Checkpoint, nil case Cleanup.String(): return Cleanup, nil case Commit.String(): return Commit, nil case Create.String(): return Create, nil case Exec.String(): return Exec, nil case ExecDied.String(): return ExecDied, nil case Exited.String(): return Exited, nil case Export.String(): return Export, nil case HealthStatus.String(): return HealthStatus, nil case History.String(): return History, nil case Import.String(): return Import, nil case Init.String(): return Init, nil case Kill.String(): return Kill, nil case LoadFromArchive.String(): return LoadFromArchive, nil case Mount.String(): return Mount, nil case NetworkConnect.String(): return NetworkConnect, nil case NetworkDisconnect.String(): return NetworkDisconnect, nil case Pause.String(): return Pause, nil case Prune.String(): return Prune, nil case Pull.String(): return Pull, nil case Push.String(): return Push, nil case Refresh.String(): return Refresh, nil case Remove.String(): return Remove, nil case Rename.String(): return Rename, nil case Renumber.String(): return Renumber, nil case Restart.String(): return Restart, nil case Restore.String(): return Restore, nil case Rotate.String(): return Rotate, nil case Save.String(): return Save, nil case Start.String(): return Start, nil case Stop.String(): return Stop, nil case Sync.String(): return Sync, nil case Tag.String(): return Tag, nil case Unmount.String(): return Unmount, nil case Unpause.String(): return Unpause, nil case Untag.String(): return Untag, nil } return "", fmt.Errorf("unknown event status %q", name) }