| // 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" |
| |
| v3 "github.com/coreos/etcd/clientv3" |
| pb "github.com/coreos/etcd/etcdserver/etcdserverpb" |
| mvccpb "github.com/coreos/etcd/mvcc/mvccpb" |
| ) |
| |
| 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 { |
| ExitWithError(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)) |
| } |