99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
//go:build linux
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/*
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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 cgroups
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import (
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"context"
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"github.com/containerd/cgroups/v3"
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"github.com/containerd/containerd/v2/core/events"
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v1 "github.com/containerd/containerd/v2/core/metrics/cgroups/v1"
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v2 "github.com/containerd/containerd/v2/core/metrics/cgroups/v2"
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"github.com/containerd/containerd/v2/core/runtime"
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"github.com/containerd/containerd/v2/plugins"
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"github.com/containerd/containerd/v2/version"
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"github.com/containerd/platforms"
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"github.com/containerd/plugin"
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"github.com/containerd/plugin/registry"
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metrics "github.com/docker/go-metrics"
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)
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// Config for the cgroups monitor
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type Config struct {
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NoPrometheus bool `toml:"no_prometheus"`
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}
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func init() {
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registry.Register(&plugin.Registration{
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Type: plugins.TaskMonitorPlugin,
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ID: "cgroups",
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InitFn: New,
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Requires: []plugin.Type{
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plugins.EventPlugin,
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},
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Config: &Config{},
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ConfigMigration: func(ctx context.Context, configVersion int, pluginConfigs map[string]interface{}) error {
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if configVersion >= version.ConfigVersion {
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return nil
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}
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// Previous plugin name
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const pluginName = "io.containerd.monitor.v1.cgroups"
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c, ok := pluginConfigs[pluginName]
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if ok {
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pluginConfigs[string(plugins.TaskMonitorPlugin)+".cgroups"] = c
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delete(pluginConfigs, pluginName)
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}
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return nil
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},
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})
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}
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// New returns a new cgroups monitor
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func New(ic *plugin.InitContext) (interface{}, error) {
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var ns *metrics.Namespace
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config := ic.Config.(*Config)
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if !config.NoPrometheus {
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ns = metrics.NewNamespace("container", "", nil)
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}
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var (
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tm runtime.TaskMonitor
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err error
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)
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ep, err := ic.GetSingle(plugins.EventPlugin)
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if err != nil {
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return nil, err
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}
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if cgroups.Mode() == cgroups.Unified {
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tm, err = v2.NewTaskMonitor(ic.Context, ep.(events.Publisher), ns)
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} else {
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tm, err = v1.NewTaskMonitor(ic.Context, ep.(events.Publisher), ns)
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}
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if err != nil {
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return nil, err
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}
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if ns != nil {
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metrics.Register(ns)
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}
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ic.Meta.Platforms = append(ic.Meta.Platforms, platforms.DefaultSpec())
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return tm, nil
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}
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