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// Copyright 2016 The etcd 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 command
import (
"fmt"
"os"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
mvccpb "go.etcd.io/etcd/api/v3/mvccpb"
v3 "go.etcd.io/etcd/client/v3"
"go.etcd.io/etcd/pkg/v3/cobrautl"
)
type pbPrinter struct{ printer }
type pbMarshal interface {
Marshal() ([]byte, error)
}
func newPBPrinter() printer {
return &pbPrinter{
&printerRPC{newPrinterUnsupported("protobuf"), printPB},
}
}
func (p *pbPrinter) Watch(r v3.WatchResponse) {
evs := make([]*mvccpb.Event, len(r.Events))
for i, ev := range r.Events {
evs[i] = (*mvccpb.Event)(ev)
}
wr := pb.WatchResponse{
Header: &r.Header,
Events: evs,
CompactRevision: r.CompactRevision,
Canceled: r.Canceled,
Created: r.Created,
}
printPB(&wr)
}
func printPB(v interface{}) {
m, ok := v.(pbMarshal)
if !ok {
cobrautl.ExitWithError(cobrautl.ExitBadFeature, fmt.Errorf("marshal unsupported for type %T (%v)", v, v))
}
b, err := m.Marshal()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return
}
fmt.Print(string(b))
}
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