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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 (
"bytes"
"encoding/json"
"fmt"
"os"
"strconv"
"go.etcd.io/etcd/client/v3"
)
type jsonPrinter struct {
isHex bool
printer
}
func newJSONPrinter(isHex bool) printer {
return &jsonPrinter{
isHex: isHex,
printer: &printerRPC{newPrinterUnsupported("json"), printJSON},
}
}
func (p *jsonPrinter) EndpointHealth(r []epHealth) { printJSON(r) }
func (p *jsonPrinter) EndpointStatus(r []epStatus) { printJSON(r) }
func (p *jsonPrinter) EndpointHashKV(r []epHashKV) { printJSON(r) }
func (p *jsonPrinter) MemberList(r clientv3.MemberListResponse) {
if p.isHex {
printMemberListWithHexJSON(r)
} else {
printJSON(r)
}
}
func printJSON(v interface{}) {
b, err := json.Marshal(v)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return
}
fmt.Println(string(b))
}
func printMemberListWithHexJSON(r clientv3.MemberListResponse) {
var buffer bytes.Buffer
var b []byte
buffer.WriteString("{\"header\":{\"cluster_id\":\"")
b = strconv.AppendUint(nil, r.Header.ClusterId, 16)
buffer.Write(b)
buffer.WriteString("\",\"member_id\":\"")
b = strconv.AppendUint(nil, r.Header.MemberId, 16)
buffer.Write(b)
buffer.WriteString("\",\"raft_term\":")
b = strconv.AppendUint(nil, r.Header.RaftTerm, 10)
buffer.Write(b)
buffer.WriteByte('}')
for i := 0; i < len(r.Members); i++ {
if i == 0 {
buffer.WriteString(",\"members\":[{\"ID\":\"")
} else {
buffer.WriteString(",{\"ID\":\"")
}
b = strconv.AppendUint(nil, r.Members[i].ID, 16)
buffer.Write(b)
buffer.WriteString("\",\"name\":\"" + r.Members[i].Name + "\"," + "\"peerURLs\":")
b, err := json.Marshal(r.Members[i].PeerURLs)
if err != nil {
return
}
buffer.Write(b)
buffer.WriteString(",\"clientURLS\":")
b, err = json.Marshal(r.Members[i].ClientURLs)
if err != nil {
return
}
buffer.Write(b)
buffer.WriteByte('}')
if i == len(r.Members)-1 {
buffer.WriteString("]")
}
}
buffer.WriteString("}")
fmt.Println(buffer.String())
}
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