72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package runtime
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// TaskMonitor provides an interface for monitoring of containers within containerd
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type TaskMonitor interface {
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// Monitor adds the provided container to the monitor.
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// Labels are optional (can be nil) key value pairs to be added to the metrics namespace.
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Monitor(task Task, labels map[string]string) error
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// Stop stops and removes the provided container from the monitor
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Stop(task Task) error
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}
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// NewMultiTaskMonitor returns a new TaskMonitor broadcasting to the provided monitors
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func NewMultiTaskMonitor(monitors ...TaskMonitor) TaskMonitor {
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return &multiTaskMonitor{
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monitors: monitors,
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}
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}
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// NewNoopMonitor is a task monitor that does nothing
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func NewNoopMonitor() TaskMonitor {
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return &noopTaskMonitor{}
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}
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type noopTaskMonitor struct {
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}
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func (mm *noopTaskMonitor) Monitor(c Task, labels map[string]string) error {
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return nil
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}
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func (mm *noopTaskMonitor) Stop(c Task) error {
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return nil
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}
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type multiTaskMonitor struct {
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monitors []TaskMonitor
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}
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func (mm *multiTaskMonitor) Monitor(task Task, labels map[string]string) error {
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for _, m := range mm.monitors {
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if err := m.Monitor(task, labels); err != nil {
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return err
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}
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}
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return nil
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}
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func (mm *multiTaskMonitor) Stop(c Task) error {
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for _, m := range mm.monitors {
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if err := m.Stop(c); err != nil {
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return err
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}
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}
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return nil
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}
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