peridot/vendor/google.golang.org/grpc/internal/pretty/pretty.go
2024-10-16 12:56:53 +02:00

74 lines
1.8 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"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/protoadapt"
)
const jsonIndent = " "
// ToJSON marshals the input into a json string.
//
// If marshal fails, it falls back to fmt.Sprintf("%+v").
func ToJSON(e any) string {
if ee, ok := e.(protoadapt.MessageV1); ok {
e = protoadapt.MessageV2Of(ee)
}
if ee, ok := e.(protoadapt.MessageV2); ok {
mm := protojson.MarshalOptions{
Indent: jsonIndent,
Multiline: true,
}
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)
}
ret, err := json.MarshalIndent(e, "", jsonIndent)
if err != nil {
return fmt.Sprintf("%+v", e)
}
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()
}