83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
|
/*
|
||
|
|
*
|
||
|
|
* Copyright 2021 gRPC 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 pretty defines helper functions to pretty-print structs for logging.
|
||
|
|
package pretty
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/json"
|
||
|
|
"fmt"
|
||
|
|
|
||
|
|
"github.com/golang/protobuf/jsonpb"
|
||
|
|
protov1 "github.com/golang/protobuf/proto"
|
||
|
|
"google.golang.org/protobuf/encoding/protojson"
|
||
|
|
protov2 "google.golang.org/protobuf/proto"
|
||
|
|
)
|
||
|
|
|
||
|
|
const jsonIndent = " "
|
||
|
|
|
||
|
|
// ToJSON marshals the input into a json string.
|
||
|
|
//
|
||
|
|
// If marshal fails, it falls back to fmt.Sprintf("%+v").
|
||
|
|
func ToJSON(e interface{}) string {
|
||
|
|
switch ee := e.(type) {
|
||
|
|
case protov1.Message:
|
||
|
|
mm := jsonpb.Marshaler{Indent: jsonIndent}
|
||
|
|
ret, err := mm.MarshalToString(ee)
|
||
|
|
if err != nil {
|
||
|
|
// This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2
|
||
|
|
// messages are not imported, and this will fail because the message
|
||
|
|
// is not found.
|
||
|
|
return fmt.Sprintf("%+v", ee)
|
||
|
|
}
|
||
|
|
return ret
|
||
|
|
case protov2.Message:
|
||
|
|
mm := protojson.MarshalOptions{
|
||
|
|
Multiline: true,
|
||
|
|
Indent: jsonIndent,
|
||
|
|
}
|
||
|
|
ret, err := mm.Marshal(ee)
|
||
|
|
if err != nil {
|
||
|
|
// This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2
|
||
|
|
// messages are not imported, and this will fail because the message
|
||
|
|
// is not found.
|
||
|
|
return fmt.Sprintf("%+v", ee)
|
||
|
|
}
|
||
|
|
return string(ret)
|
||
|
|
default:
|
||
|
|
ret, err := json.MarshalIndent(ee, "", jsonIndent)
|
||
|
|
if err != nil {
|
||
|
|
return fmt.Sprintf("%+v", ee)
|
||
|
|
}
|
||
|
|
return string(ret)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// FormatJSON formats the input json bytes with indentation.
|
||
|
|
//
|
||
|
|
// If Indent fails, it returns the unchanged input as string.
|
||
|
|
func FormatJSON(b []byte) string {
|
||
|
|
var out bytes.Buffer
|
||
|
|
err := json.Indent(&out, b, "", jsonIndent)
|
||
|
|
if err != nil {
|
||
|
|
return string(b)
|
||
|
|
}
|
||
|
|
return out.String()
|
||
|
|
}
|