| // |
| // 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 pf |
| |
| import ( |
| "context" |
| "time" |
| |
| "github.com/apache/pulsar/pulsar-client-go/pulsar" |
| log "github.com/apache/pulsar/pulsar-function-go/logutil" |
| ) |
| |
| type LogAppender struct { |
| pulsarClient pulsar.Client |
| logTopic string |
| fqn string |
| producer pulsar.Producer |
| } |
| |
| func NewLogAppender(client pulsar.Client, logTopic, fqn string) *LogAppender { |
| logAppender := &LogAppender{ |
| pulsarClient: client, |
| logTopic: logTopic, |
| fqn: fqn, |
| } |
| return logAppender |
| } |
| |
| func (la *LogAppender) Start() error { |
| producer, err := la.pulsarClient.CreateProducer(pulsar.ProducerOptions{ |
| Topic: la.logTopic, |
| BlockIfQueueFull: false, |
| Batching: true, |
| CompressionType: pulsar.LZ4, |
| BatchingMaxPublishDelay: 100 * time.Millisecond, |
| Properties: map[string]string{ |
| "function": la.fqn, |
| }, |
| }) |
| if err != nil { |
| log.Errorf("create producer error:%s", err.Error()) |
| return err |
| } |
| la.producer = producer |
| return nil |
| } |
| |
| func (la *LogAppender) Append(logByte []byte) { |
| ctx := context.Background() |
| asyncMsg := pulsar.ProducerMessage{ |
| Payload: logByte, |
| } |
| la.producer.SendAsync(ctx, asyncMsg, func(msg pulsar.ProducerMessage, err error) { |
| if err != nil { |
| log.Fatal(err) |
| } |
| }) |
| } |
| |
| func (la *LogAppender) GetName() string { |
| return la.fqn |
| } |
| |
| func (la *LogAppender) Stop() { |
| err := la.producer.Close() |
| if err != nil { |
| log.Errorf("close log append error:%s", err.Error()) |
| } |
| la.producer = nil |
| } |