mirror of
https://github.com/etcd-io/etcd.git
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111 lines
2.6 KiB
Go
111 lines
2.6 KiB
Go
// Copyright 2016 CoreOS, Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package command
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import (
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"encoding/json"
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"fmt"
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"os"
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v3 "github.com/coreos/etcd/clientv3"
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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)
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type printer interface {
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Del(v3.DeleteResponse)
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Get(v3.GetResponse)
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Put(v3.PutResponse)
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Txn(v3.TxnResponse)
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Watch(v3.WatchResponse)
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}
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func NewPrinter(printerType string, isHex bool) printer {
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switch printerType {
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case "simple":
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return &simplePrinter{isHex: isHex}
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case "json":
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return &jsonPrinter{}
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}
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return nil
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}
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type simplePrinter struct {
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isHex bool
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}
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func (s *simplePrinter) Del(v3.DeleteResponse) {
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// TODO: add number of key removed into the response of delete.
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// TODO: print out the number of removed keys.
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fmt.Println(0)
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}
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func (s *simplePrinter) Get(resp v3.GetResponse) {
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for _, kv := range resp.Kvs {
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printKV(s.isHex, kv)
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}
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}
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func (s *simplePrinter) Put(r v3.PutResponse) { fmt.Println("OK") }
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func (s *simplePrinter) Txn(resp v3.TxnResponse) {
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if resp.Succeeded {
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fmt.Println("SUCCESS")
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} else {
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fmt.Println("FAILURE")
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}
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for _, r := range resp.Responses {
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fmt.Println("")
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switch v := r.Response.(type) {
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case *pb.ResponseUnion_ResponseDeleteRange:
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s.Del((v3.DeleteResponse)(*v.ResponseDeleteRange))
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case *pb.ResponseUnion_ResponsePut:
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s.Put((v3.PutResponse)(*v.ResponsePut))
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case *pb.ResponseUnion_ResponseRange:
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s.Get(((v3.GetResponse)(*v.ResponseRange)))
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default:
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fmt.Printf("unexpected response %+v\n", r)
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}
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}
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}
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func (s *simplePrinter) Watch(resp v3.WatchResponse) {
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for _, e := range resp.Events {
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fmt.Println(e.Type)
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printKV(s.isHex, e.Kv)
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}
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}
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type jsonPrinter struct{}
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func (p *jsonPrinter) Del(r v3.DeleteResponse) { printJSON(r) }
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func (p *jsonPrinter) Get(r v3.GetResponse) {
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for _, kv := range r.Kvs {
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printJSON(kv)
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}
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}
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func (p *jsonPrinter) Put(r v3.PutResponse) { printJSON(r) }
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func (p *jsonPrinter) Txn(r v3.TxnResponse) { printJSON(r) }
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func (p *jsonPrinter) Watch(r v3.WatchResponse) { printJSON(r) }
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func printJSON(v interface{}) {
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b, err := json.Marshal(v)
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if err != nil {
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fmt.Fprintf(os.Stderr, "%v\n", err)
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return
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}
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fmt.Println(string(b))
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}
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