pulumi/pkg/util/rpcdebug/logformat.go

63 lines
1.9 KiB
Go

// Copyright 2016-2022, Pulumi Corporation.
//
// 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 rpcdebug
import (
"bytes"
"encoding/json"
"fmt"
"reflect"
"github.com/golang/protobuf/jsonpb"
"github.com/golang/protobuf/proto"
)
// JSON format for tracking gRPC conversations. Normal methods have one entry for each req-resp conversation, streaming
// methods have one entry per each request or response over the stream.
type debugInterceptorLogEntry struct {
Method string `json:"method"`
Request json.RawMessage `json:"request,omitempty"`
Response json.RawMessage `json:"response,omitempty"`
Errors []string `json:"errors,omitempty"`
Metadata interface{} `json:"metadata,omitempty"`
}
// Convert protobuf messages to JSON used in Request, Response fields of debugInterceptorLogEntry.
func transcode(obj interface{}) (json.RawMessage, error) {
if obj == nil {
return json.RawMessage("null"), nil
}
m, ok := obj.(proto.Message)
if !ok {
return json.RawMessage("null"),
fmt.Errorf("Failed to decode, expecting proto.Message, got %v",
reflect.TypeOf(obj))
}
jsonSer := jsonpb.Marshaler{}
buf := bytes.Buffer{}
if err := jsonSer.Marshal(&buf, m); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func transcodeBack(raw json.RawMessage, dest interface{}) error {
jsonSer := &jsonpb.Unmarshaler{}
destmsg := dest.(proto.Message)
return jsonSer.Unmarshal(bytes.NewReader(raw), destmsg)
}