zbw911 commented on code in PR #128: URL: https://github.com/apache/skywalking-satellite/pull/128#discussion_r1137022542
########## plugins/forwarder/kafka/nativetracing/forwarder.go: ########## @@ -0,0 +1,121 @@ +// Licensed to 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. Apache Software Foundation (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 nativetracing + +import ( + "fmt" + "reflect" + v3 "skywalking.apache.org/repo/goapi/collect/language/agent/v3" + + "github.com/Shopify/sarama" + "github.com/apache/skywalking-satellite/internal/pkg/config" + "github.com/apache/skywalking-satellite/internal/satellite/event" + "google.golang.org/protobuf/proto" + + v1 "skywalking.apache.org/repo/goapi/satellite/data/v1" +) + +const ( + Name = "native-tracing-kafka-forwarder" + ShowName = "Native Tracing Kafka Forwarder" +) + +type Forwarder struct { + config.CommonFields + Topic string `mapstructure:"topic"` // The forwarder topic. + producer sarama.SyncProducer +} + +func (f *Forwarder) Name() string { + return Name +} + +func (f *Forwarder) ShowName() string { + return ShowName +} + +func (f *Forwarder) Description() string { + return "This is a synchronization Kafka forwarder with the SkyWalking native log protocol." +} + +func (f *Forwarder) DefaultConfig() string { + return ` +# The remote topic. +topic: "skywalking-segments" +` +} + +func (f *Forwarder) Prepare(connection interface{}) error { + client, ok := connection.(sarama.Client) + if !ok { + return fmt.Errorf("the %s only accepts a grpc client, but received a %s", + f.Name(), reflect.TypeOf(connection).String()) + } + producer, err := sarama.NewSyncProducerFromClient(client) + if err != nil { + return err + } + f.producer = producer + return nil +} + +func (f *Forwarder) Forward(batch event.BatchEvents) error { + var message []*sarama.ProducerMessage + for _, e := range batch { + switch data := e.GetData().(type) { + case *v1.SniffData_Segment: + segmentObject := &v3.SegmentObject{} + err := proto.Unmarshal(data.Segment, segmentObject) + if err != nil { + return err + } + + message = append(message, &sarama.ProducerMessage{ + Topic: f.Topic, + Key: sarama.StringEncoder(segmentObject.GetTraceSegmentId()), + Value: sarama.ByteEncoder(data.Segment), + }) + case *v1.SniffData_SpanAttachedEvent: + message = append(message, &sarama.ProducerMessage{ Review Comment: I am not familiar with Rover and cannot conduct testing. If I were to proceed without proper knowledge, it could negatively impact the quality. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
