| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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 bufpluginexec |
| |
| import ( |
| "bytes" |
| "context" |
| "io" |
| "path/filepath" |
| ) |
| |
| import ( |
| "go.opentelemetry.io/otel" |
| "go.opentelemetry.io/otel/attribute" |
| "go.opentelemetry.io/otel/codes" |
| "go.opentelemetry.io/otel/trace" |
| |
| "google.golang.org/protobuf/types/pluginpb" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-kubernetes/pkg/bufman/pkg/app" |
| "github.com/apache/dubbo-kubernetes/pkg/bufman/pkg/app/appproto" |
| "github.com/apache/dubbo-kubernetes/pkg/bufman/pkg/command" |
| "github.com/apache/dubbo-kubernetes/pkg/bufman/pkg/ioextended" |
| "github.com/apache/dubbo-kubernetes/pkg/bufman/pkg/protoencoding" |
| ) |
| |
| type binaryHandler struct { |
| runner command.Runner |
| pluginPath string |
| tracer trace.Tracer |
| pluginArgs []string |
| } |
| |
| func newBinaryHandler( |
| runner command.Runner, |
| pluginPath string, |
| pluginArgs []string, |
| ) *binaryHandler { |
| return &binaryHandler{ |
| runner: runner, |
| pluginPath: pluginPath, |
| tracer: otel.GetTracerProvider().Tracer("bufbuild/buf"), |
| pluginArgs: pluginArgs, |
| } |
| } |
| |
| func (h *binaryHandler) Handle( |
| ctx context.Context, |
| container app.EnvStderrContainer, |
| responseWriter appproto.ResponseBuilder, |
| request *pluginpb.CodeGeneratorRequest, |
| ) error { |
| ctx, span := h.tracer.Start(ctx, "plugin_proxy", trace.WithAttributes( |
| attribute.Key("plugin").String(filepath.Base(h.pluginPath)), |
| )) |
| defer span.End() |
| requestData, err := protoencoding.NewWireMarshaler().Marshal(request) |
| if err != nil { |
| span.RecordError(err) |
| span.SetStatus(codes.Error, err.Error()) |
| return err |
| } |
| responseBuffer := bytes.NewBuffer(nil) |
| stderrWriteCloser := newStderrWriteCloser(container.Stderr(), h.pluginPath) |
| runOptions := []command.RunOption{ |
| command.RunWithEnv(app.EnvironMap(container)), |
| command.RunWithStdin(bytes.NewReader(requestData)), |
| command.RunWithStdout(responseBuffer), |
| command.RunWithStderr(stderrWriteCloser), |
| } |
| if len(h.pluginArgs) > 0 { |
| runOptions = append(runOptions, command.RunWithArgs(h.pluginArgs...)) |
| } |
| if err := h.runner.Run( |
| ctx, |
| h.pluginPath, |
| runOptions..., |
| ); err != nil { |
| span.RecordError(err) |
| span.SetStatus(codes.Error, err.Error()) |
| return err |
| } |
| response := &pluginpb.CodeGeneratorResponse{} |
| if err := protoencoding.NewWireUnmarshaler(nil).Unmarshal(responseBuffer.Bytes(), response); err != nil { |
| span.RecordError(err) |
| span.SetStatus(codes.Error, err.Error()) |
| return err |
| } |
| response, err = normalizeCodeGeneratorResponse(response) |
| if err != nil { |
| span.RecordError(err) |
| span.SetStatus(codes.Error, err.Error()) |
| return err |
| } |
| if response.GetSupportedFeatures()&uint64(pluginpb.CodeGeneratorResponse_FEATURE_PROTO3_OPTIONAL) != 0 { |
| responseWriter.SetFeatureProto3Optional() |
| } |
| for _, file := range response.File { |
| if err := responseWriter.AddFile(file); err != nil { |
| span.RecordError(err) |
| span.SetStatus(codes.Error, err.Error()) |
| return err |
| } |
| } |
| // plugin.proto specifies that only non-empty errors are considered errors. |
| // This is also consistent with protoc's behavior. |
| // Ref: https://github.com/protocolbuffers/protobuf/blob/069f989b483e63005f87ab309de130677718bbec/src/google/protobuf/compiler/plugin.proto#L100-L108. |
| if response.GetError() != "" { |
| responseWriter.AddError(response.GetError()) |
| } |
| return nil |
| } |
| |
| func newStderrWriteCloser(delegate io.Writer, pluginPath string) io.WriteCloser { |
| switch filepath.Base(pluginPath) { |
| case "protoc-gen-swift": |
| // https://github.com/ProtobufMan/bufman-cli/issues/1736 |
| // Swallowing specific stderr message for protoc-gen-swift as protoc-gen-swift, see issue. |
| // This is all disgusting code but it's simple and it works. |
| // We did not document if pluginPath is normalized or not, so |
| return newProtocGenSwiftStderrWriteCloser(delegate) |
| default: |
| return ioextended.NopWriteCloser(delegate) |
| } |
| } |