| /* |
| * 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 rocketmq |
| |
| /* |
| #cgo LDFLAGS: -L/usr/local/lib -lrocketmq |
| |
| #include <stdlib.h> |
| #include <rocketmq/CMessageExt.h> |
| #include <rocketmq/CPushConsumer.h> |
| |
| extern int consumeMessageCallback(CPushConsumer *consumer, CMessageExt *msg); |
| |
| int callback_cgo(CPushConsumer *consumer, CMessageExt *msg) { |
| return consumeMessageCallback(consumer, msg); |
| } |
| */ |
| import "C" |
| |
| import ( |
| "errors" |
| "fmt" |
| log "github.com/sirupsen/logrus" |
| "sync" |
| "unsafe" |
| ) |
| |
| type ConsumeStatus int |
| |
| const ( |
| ConsumeSuccess = ConsumeStatus(C.E_CONSUME_SUCCESS) |
| ReConsumeLater = ConsumeStatus(C.E_RECONSUME_LATER) |
| ) |
| |
| func (status ConsumeStatus) String() string { |
| switch status { |
| case ConsumeSuccess: |
| return "ConsumeSuccess" |
| case ReConsumeLater: |
| return "ReConsumeLater" |
| default: |
| return "Unknown" |
| } |
| } |
| |
| type defaultPushConsumer struct { |
| config *PushConsumerConfig |
| cconsumer *C.struct_CPushConsumer |
| funcsMap sync.Map |
| } |
| |
| func (c *defaultPushConsumer) String() string { |
| topics := "" |
| c.funcsMap.Range(func(key, value interface{}) bool { |
| topics += key.(string) + ", " |
| return true |
| }) |
| return fmt.Sprintf("[%s, subcribed topics: [%s]]", c.config, topics) |
| } |
| |
| func newPushConsumer(config *PushConsumerConfig) (PushConsumer, error) { |
| if config == nil { |
| return nil, errors.New("config is nil") |
| } |
| if config.GroupID == "" { |
| return nil, errors.New("GroupId is empty.") |
| } |
| |
| if config.NameServer == "" && config.NameServerDomain == "" { |
| return nil, errors.New("NameServer and NameServerDomain is empty.") |
| } |
| |
| consumer := &defaultPushConsumer{config: config} |
| cs := C.CString(config.GroupID) |
| cconsumer := C.CreatePushConsumer(cs) |
| C.free(unsafe.Pointer(cs)) |
| |
| if cconsumer == nil { |
| return nil, errors.New("Create PushConsumer failed") |
| } |
| |
| var err rmqError |
| if config.NameServer != "" { |
| cs = C.CString(config.NameServer) |
| err = rmqError(C.SetPushConsumerNameServerAddress(cconsumer, cs)) |
| C.free(unsafe.Pointer(cs)) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.NameServerDomain != "" { |
| cs = C.CString(config.NameServerDomain) |
| err = rmqError(C.SetPushConsumerNameServerDomain(cconsumer, cs)) |
| C.free(unsafe.Pointer(cs)) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.InstanceName != "" { |
| cs = C.CString(config.InstanceName) |
| err = rmqError(C.SetPushConsumerInstanceName(cconsumer, cs)) |
| C.free(unsafe.Pointer(cs)) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.Credentials != nil { |
| ak := C.CString(config.Credentials.AccessKey) |
| sk := C.CString(config.Credentials.SecretKey) |
| ch := C.CString(config.Credentials.Channel) |
| err = rmqError(C.SetPushConsumerSessionCredentials(cconsumer, ak, sk, ch)) |
| C.free(unsafe.Pointer(ak)) |
| C.free(unsafe.Pointer(sk)) |
| C.free(unsafe.Pointer(ch)) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.LogC != nil { |
| cs = C.CString(config.LogC.Path) |
| err = rmqError(C.SetPushConsumerLogPath(cconsumer, cs)) |
| C.free(unsafe.Pointer(cs)) |
| if err != NIL { |
| return nil, err |
| } |
| |
| err = rmqError(C.SetPushConsumerLogFileNumAndSize(cconsumer, C.int(config.LogC.FileNum), C.long(config.LogC.FileSize))) |
| if err != NIL { |
| return nil, err |
| } |
| |
| err = rmqError(C.SetPushConsumerLogLevel(cconsumer, C.CLogLevel(config.LogC.Level))) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.ThreadCount > 0 { |
| err = rmqError(C.SetPushConsumerThreadCount(cconsumer, C.int(config.ThreadCount))) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.MessageBatchMaxSize > 0 { |
| err = rmqError(C.SetPushConsumerMessageBatchMaxSize(cconsumer, C.int(config.MessageBatchMaxSize))) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.MaxCacheMessageSize > 0 { |
| err = rmqError(C.SetPushConsumerMaxCacheMessageSize(cconsumer, C.int(config.MaxCacheMessageSize))) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.MaxCacheMessageSizeInMB > 0 { |
| err = rmqError(C.SetPushConsumerMaxCacheMessageSizeInMb(cconsumer, C.int(config.MaxCacheMessageSizeInMB))) |
| if err != NIL { |
| return nil, err |
| } |
| } |
| |
| if config.Model != 0 { |
| var mode C.CMessageModel |
| switch config.Model { |
| case BroadCasting: |
| mode = C.BROADCASTING |
| case Clustering: |
| mode = C.CLUSTERING |
| } |
| err = rmqError(C.SetPushConsumerMessageModel(cconsumer, mode)) |
| |
| if err != NIL { |
| return nil, err |
| } |
| |
| } |
| |
| if config.ConsumerModel != 0 { |
| switch config.ConsumerModel { |
| case Orderly: |
| err = rmqError(C.RegisterMessageCallbackOrderly(cconsumer, (C.MessageCallBack)(unsafe.Pointer(C.callback_cgo)))) |
| case CoCurrently: |
| err = rmqError(C.RegisterMessageCallback(cconsumer, (C.MessageCallBack)(unsafe.Pointer(C.callback_cgo)))) |
| } |
| if err != NIL { |
| return nil, err |
| } |
| |
| } |
| |
| consumer.cconsumer = cconsumer |
| pushConsumerMap.Store(cconsumer, consumer) |
| return consumer, nil |
| } |
| |
| func (c *defaultPushConsumer) Start() error { |
| err := rmqError(C.StartPushConsumer(c.cconsumer)) |
| if err != NIL { |
| return err |
| } |
| return nil |
| } |
| |
| func (c *defaultPushConsumer) Shutdown() error { |
| err := rmqError(C.ShutdownPushConsumer(c.cconsumer)) |
| |
| if err != NIL { |
| return err |
| } |
| |
| err = rmqError(C.DestroyPushConsumer(c.cconsumer)) |
| if err != NIL { |
| return err |
| } |
| return nil |
| } |
| |
| func (c *defaultPushConsumer) Subscribe(topic, expression string, consumeFunc func(msg *MessageExt) ConsumeStatus) error { |
| _, exist := c.funcsMap.Load(topic) |
| if exist { |
| return nil |
| } |
| err := rmqError(C.Subscribe(c.cconsumer, C.CString(topic), C.CString(expression))) |
| if err != NIL { |
| return err |
| } |
| c.funcsMap.Store(topic, consumeFunc) |
| log.Infof("subscribe topic[%s] with expression[%s] successfully.", topic, expression) |
| return nil |
| } |