f8f1e5f7a6
Adds a plugin type for container monitor. Rename the task monitor type to avoid confusion. Add config migration for new plugin types to pass existing migration tests. Signed-off-by: Derek McGowan <derek@mcg.dev>
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
//go:build linux
|
|
|
|
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package cgroups
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/containerd/cgroups/v3"
|
|
v1 "github.com/containerd/containerd/v2/core/metrics/cgroups/v1"
|
|
v2 "github.com/containerd/containerd/v2/core/metrics/cgroups/v2"
|
|
"github.com/containerd/containerd/v2/core/runtime"
|
|
"github.com/containerd/containerd/v2/pkg/events"
|
|
"github.com/containerd/containerd/v2/plugins"
|
|
"github.com/containerd/containerd/v2/version"
|
|
"github.com/containerd/platforms"
|
|
"github.com/containerd/plugin"
|
|
"github.com/containerd/plugin/registry"
|
|
metrics "github.com/docker/go-metrics"
|
|
)
|
|
|
|
// Config for the cgroups monitor
|
|
type Config struct {
|
|
NoPrometheus bool `toml:"no_prometheus"`
|
|
}
|
|
|
|
func init() {
|
|
registry.Register(&plugin.Registration{
|
|
Type: plugins.TaskMonitorPlugin,
|
|
ID: "cgroups",
|
|
InitFn: New,
|
|
Requires: []plugin.Type{
|
|
plugins.EventPlugin,
|
|
},
|
|
Config: &Config{},
|
|
ConfigMigration: func(ctx context.Context, configVersion int, pluginConfigs map[string]interface{}) error {
|
|
if configVersion >= version.ConfigVersion {
|
|
return nil
|
|
}
|
|
// Previous plugin name
|
|
const pluginName = "io.containerd.monitor.v1.cgroups"
|
|
c, ok := pluginConfigs[pluginName]
|
|
if ok {
|
|
pluginConfigs[string(plugins.TaskMonitorPlugin)+".cgroups"] = c
|
|
delete(pluginConfigs, pluginName)
|
|
}
|
|
|
|
return nil
|
|
},
|
|
})
|
|
}
|
|
|
|
// New returns a new cgroups monitor
|
|
func New(ic *plugin.InitContext) (interface{}, error) {
|
|
var ns *metrics.Namespace
|
|
config := ic.Config.(*Config)
|
|
if !config.NoPrometheus {
|
|
ns = metrics.NewNamespace("container", "", nil)
|
|
}
|
|
var (
|
|
tm runtime.TaskMonitor
|
|
err error
|
|
)
|
|
|
|
ep, err := ic.GetSingle(plugins.EventPlugin)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if cgroups.Mode() == cgroups.Unified {
|
|
tm, err = v2.NewTaskMonitor(ic.Context, ep.(events.Publisher), ns)
|
|
} else {
|
|
tm, err = v1.NewTaskMonitor(ic.Context, ep.(events.Publisher), ns)
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if ns != nil {
|
|
metrics.Register(ns)
|
|
}
|
|
ic.Meta.Platforms = append(ic.Meta.Platforms, platforms.DefaultSpec())
|
|
return tm, nil
|
|
}
|