containerd/plugin/monitor.go

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package plugin
import "github.com/docker/containerd"
// ContainerMonitor provides an interface for monitoring of containers within containerd
type ContainerMonitor interface {
// Monitor adds the provided container to the monitor
Monitor(containerd.Container) error
// Stop stops and removes the provided container from the monitor
Stop(containerd.Container) error
}
func NewMultiContainerMonitor(monitors ...ContainerMonitor) ContainerMonitor {
return &multiContainerMonitor{
monitors: monitors,
}
}
func NewNoopMonitor() ContainerMonitor {
return &noopContainerMonitor{}
}
type noopContainerMonitor struct {
}
func (mm *noopContainerMonitor) Monitor(c containerd.Container) error {
return nil
}
func (mm *noopContainerMonitor) Stop(c containerd.Container) error {
return nil
}
type multiContainerMonitor struct {
monitors []ContainerMonitor
}
func (mm *multiContainerMonitor) Monitor(c containerd.Container) error {
for _, m := range mm.monitors {
if err := m.Monitor(c); err != nil {
return err
}
}
return nil
}
func (mm *multiContainerMonitor) Stop(c containerd.Container) error {
for _, m := range mm.monitors {
if err := m.Stop(c); err != nil {
return err
}
}
return nil
}