833701165a
Errors like `"type with url %s: not found"` are typical for non-builtin event types, and should not resultin exiting `ctr`. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
79 lines
2.0 KiB
Go
79 lines
2.0 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 events
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import (
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"encoding/json"
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"fmt"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/containerd/containerd/events"
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"github.com/containerd/containerd/log"
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"github.com/containerd/typeurl"
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"github.com/urfave/cli"
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// Register grpc event types
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_ "github.com/containerd/containerd/api/events"
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)
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// Command is the cli command for displaying containerd events
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var Command = cli.Command{
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Name: "events",
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Aliases: []string{"event"},
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Usage: "display containerd events",
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Action: func(context *cli.Context) error {
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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eventsClient := client.EventService()
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eventsCh, errCh := eventsClient.Subscribe(ctx, context.Args()...)
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for {
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var e *events.Envelope
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select {
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case e = <-eventsCh:
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case err = <-errCh:
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return err
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}
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if e != nil {
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var out []byte
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if e.Event != nil {
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v, err := typeurl.UnmarshalAny(e.Event)
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if err != nil {
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log.G(ctx).WithError(err).Warn("cannot unmarshal an event from Any")
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continue
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}
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out, err = json.Marshal(v)
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if err != nil {
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log.G(ctx).WithError(err).Warn("cannot marshal Any into JSON")
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continue
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}
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}
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if _, err := fmt.Println(
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e.Timestamp,
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e.Namespace,
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e.Topic,
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string(out),
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); err != nil {
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return err
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}
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}
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}
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},
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}
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