forked from containerd/containerd
/
monitor.go
54 lines (45 loc) · 1.13 KB
/
monitor.go
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package runtime
// TaskMonitor provides an interface for monitoring of containers within containerd
type TaskMonitor interface {
// Monitor adds the provided container to the monitor
Monitor(Task) error
// Stop stops and removes the provided container from the monitor
Stop(Task) error
}
// NewMultiTaskMonitor returns a new TaskMonitor broadcasting to the provided monitors
func NewMultiTaskMonitor(monitors ...TaskMonitor) TaskMonitor {
return &multiTaskMonitor{
monitors: monitors,
}
}
// NewNoopMonitor is a task monitor that does nothing
func NewNoopMonitor() TaskMonitor {
return &noopTaskMonitor{}
}
type noopTaskMonitor struct {
}
func (mm *noopTaskMonitor) Monitor(c Task) error {
return nil
}
func (mm *noopTaskMonitor) Stop(c Task) error {
return nil
}
type multiTaskMonitor struct {
monitors []TaskMonitor
}
func (mm *multiTaskMonitor) Monitor(c Task) error {
for _, m := range mm.monitors {
if err := m.Monitor(c); err != nil {
return err
}
}
return nil
}
func (mm *multiTaskMonitor) Stop(c Task) error {
for _, m := range mm.monitors {
if err := m.Stop(c); err != nil {
return err
}
}
return nil
}