| // 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 nativelog |
| |
| import ( |
| "context" |
| "fmt" |
| "io" |
| "reflect" |
| |
| "google.golang.org/grpc" |
| |
| logging "skywalking.apache.org/repo/goapi/collect/logging/v3" |
| v1 "skywalking.apache.org/repo/goapi/satellite/data/v1" |
| |
| "github.com/apache/skywalking-satellite/internal/pkg/config" |
| "github.com/apache/skywalking-satellite/internal/pkg/log" |
| "github.com/apache/skywalking-satellite/internal/satellite/event" |
| server_grpc "github.com/apache/skywalking-satellite/plugins/server/grpc" |
| ) |
| |
| const ( |
| Name = "native-log-grpc-forwarder" |
| ShowName = "Native Log GRPC Forwarder" |
| ) |
| |
| type Forwarder struct { |
| config.CommonFields |
| |
| logClient logging.LogReportServiceClient |
| } |
| |
| func (f *Forwarder) Name() string { |
| return Name |
| } |
| |
| func (f *Forwarder) ShowName() string { |
| return ShowName |
| } |
| |
| func (f *Forwarder) Description() string { |
| return "This is a synchronization grpc forwarder with the SkyWalking native log protocol." |
| } |
| |
| func (f *Forwarder) DefaultConfig() string { |
| return `` |
| } |
| |
| func (f *Forwarder) Prepare(connection interface{}) error { |
| client, ok := connection.(*grpc.ClientConn) |
| if !ok { |
| return fmt.Errorf("the %s only accepts a grpc client, but received a %s", |
| f.Name(), reflect.TypeOf(connection).String()) |
| } |
| f.logClient = logging.NewLogReportServiceClient(client) |
| return nil |
| } |
| |
| func (f *Forwarder) Forward(batch event.BatchEvents) error { |
| for _, e := range batch { |
| data, ok := e.GetData().(*v1.SniffData_LogList) |
| if !ok { |
| continue |
| } |
| stream, err := f.logClient.Collect(context.Background()) |
| if err != nil { |
| log.Logger.Errorf("open grpc stream error %v", err) |
| return err |
| } |
| streamClosed := false |
| for _, logData := range data.LogList.Logs { |
| err := stream.SendMsg(server_grpc.NewOriginalData(logData)) |
| if err != nil { |
| log.Logger.Errorf("%s send log data error: %v", f.Name(), err) |
| f.closeStream(stream) |
| streamClosed = true |
| break |
| } |
| } |
| |
| if !streamClosed { |
| f.closeStream(stream) |
| } |
| } |
| return nil |
| } |
| |
| func (f *Forwarder) closeStream(stream logging.LogReportService_CollectClient) { |
| _, err := stream.CloseAndRecv() |
| if err != nil && err != io.EOF { |
| if err != nil { |
| log.Logger.Errorf("%s close stream error: %v", f.Name(), err) |
| } |
| } |
| } |
| |
| func (f *Forwarder) ForwardType() v1.SniffType { |
| return v1.SniffType_Logging |
| } |
| |
| func (f *Forwarder) SyncForward(*v1.SniffData) (*v1.SniffData, error) { |
| return nil, fmt.Errorf("unsupport sync forward") |
| } |
| |
| func (f *Forwarder) SupportedSyncInvoke() bool { |
| return false |
| } |