115 lines
3.2 KiB
Go
115 lines
3.2 KiB
Go
/*
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Copyright 2018 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 cri
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import (
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"flag"
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"path/filepath"
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"github.com/containerd/containerd/log"
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"github.com/containerd/containerd/platforms"
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"github.com/containerd/containerd/plugin"
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imagespec "github.com/opencontainers/image-spec/specs-go/v1"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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criconfig "github.com/containerd/cri-containerd/pkg/config"
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"github.com/containerd/cri-containerd/pkg/server"
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)
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// criVersion is the CRI version supported by the CRI plugin.
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const criVersion = "v1alpha2"
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// TODO(random-liu): Use github.com/pkg/errors for our errors.
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// Register CRI service plugin
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func init() {
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config := criconfig.DefaultConfig()
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plugin.Register(&plugin.Registration{
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Type: plugin.GRPCPlugin,
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ID: "cri",
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Config: &config,
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Requires: []plugin.Type{
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plugin.RuntimePlugin,
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plugin.SnapshotPlugin,
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plugin.TaskMonitorPlugin,
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plugin.DiffPlugin,
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plugin.MetadataPlugin,
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plugin.ContentPlugin,
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plugin.GCPlugin,
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},
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InitFn: initCRIService,
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})
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}
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func initCRIService(ic *plugin.InitContext) (interface{}, error) {
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ic.Meta.Platforms = []imagespec.Platform{platforms.DefaultSpec()}
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ic.Meta.Exports = map[string]string{"CRIVersion": criVersion}
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ctx := ic.Context
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pluginConfig := ic.Config.(*criconfig.PluginConfig)
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c := criconfig.Config{
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PluginConfig: *pluginConfig,
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// This is a hack. We assume that containerd root directory
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// is one level above plugin directory.
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// TODO(random-liu): Expose containerd config to plugin.
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ContainerdRootDir: filepath.Dir(ic.Root),
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ContainerdEndpoint: ic.Address,
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RootDir: ic.Root,
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}
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log.G(ctx).Infof("Start cri plugin with config %+v", c)
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if err := setGLogLevel(); err != nil {
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return nil, errors.Wrap(err, "failed to set glog level")
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}
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s, err := server.NewCRIContainerdService(c)
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if err != nil {
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return nil, errors.Wrap(err, "failed to create CRI service")
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}
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// Use a goroutine to initialize cri service. The reason is that currently
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// cri service requires containerd to be initialize.
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go func() {
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if err := s.Run(); err != nil {
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log.G(ctx).WithError(err).Fatal("Failed to run CRI service")
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}
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// TODO(random-liu): Whether and how we can stop containerd.
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}()
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return s, nil
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}
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// Set glog level.
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func setGLogLevel() error {
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l := logrus.GetLevel()
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if err := flag.Set("logtostderr", "true"); err != nil {
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return err
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}
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switch l {
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case log.TraceLevel:
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return flag.Set("v", "5")
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case logrus.DebugLevel:
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return flag.Set("v", "4")
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case logrus.InfoLevel:
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return flag.Set("v", "2")
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// glog doesn't support following filters. Defaults to v=0.
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case logrus.WarnLevel:
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case logrus.ErrorLevel:
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case logrus.FatalLevel:
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case logrus.PanicLevel:
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}
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return nil
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}
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