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events.go
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/
events.go
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package events
import (
"encoding/json"
"fmt"
eventsapi "github.com/containerd/containerd/api/services/events/v1"
"github.com/containerd/containerd/cmd/ctr/commands"
"github.com/containerd/typeurl"
"github.com/urfave/cli"
// Register grpc event types
_ "github.com/containerd/containerd/api/events"
)
// Command is the cli command for displaying containerd events
var Command = cli.Command{
Name: "events",
Aliases: []string{"event"},
Usage: "display containerd events",
Action: func(context *cli.Context) error {
client, ctx, cancel, err := commands.NewClient(context)
if err != nil {
return err
}
defer cancel()
eventsClient := client.EventService()
events, err := eventsClient.Subscribe(ctx, &eventsapi.SubscribeRequest{
Filters: context.Args(),
})
if err != nil {
return err
}
for {
e, err := events.Recv()
if err != nil {
return err
}
var out []byte
if e.Event != nil {
v, err := typeurl.UnmarshalAny(e.Event)
if err != nil {
return err
}
out, err = json.Marshal(v)
if err != nil {
return err
}
}
if _, err := fmt.Println(
e.Timestamp,
e.Namespace,
e.Topic,
string(out),
); err != nil {
return err
}
}
},
}