| /* |
| * 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 mq |
| |
| import ( |
| "context" |
| "encoding/json" |
| "io" |
| "strings" |
| "sync" |
| ) |
| |
| import ( |
| perrors "github.com/pkg/errors" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/client" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/common/constant" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/logger" |
| ) |
| |
| var ( |
| mqClient *Client |
| once sync.Once |
| consumerFacadeMap sync.Map |
| ) |
| |
| func NewSingletonMQClient(config Config) *Client { |
| if mqClient == nil { |
| once.Do(func() { |
| var err error |
| mqClient, err = NewMQClient(config) |
| if err != nil { |
| logger.Errorf("create mq client failed, %s", err.Error()) |
| } |
| }) |
| } |
| return mqClient |
| } |
| |
| func NewMQClient(config Config) (*Client, error) { |
| var c *Client |
| ctx := context.Background() |
| switch config.MqType { |
| case constant.MQTypeKafka: |
| config.KafkaProducerConfig.Timeout = config.Timeout |
| pf, err := NewKafkaProviderFacade(config.KafkaProducerConfig) |
| if err != nil { |
| return nil, err |
| } |
| c = &Client{ |
| ctx: ctx, |
| producerFacade: pf, |
| kafkaConsumerConfig: config.KafkaConsumerConfig, |
| } |
| case constant.MQTypeRocketMQ: |
| return nil, perrors.New("rocketmq not support") |
| } |
| |
| return c, nil |
| } |
| |
| type Client struct { |
| ctx context.Context |
| producerFacade ProducerFacade |
| kafkaConsumerConfig KafkaConsumerConfig |
| } |
| |
| func (c Client) Apply() error { |
| panic("implement me") |
| } |
| |
| func (c Client) Close() error { |
| return nil |
| } |
| |
| func (c Client) Call(req *client.Request) (res interface{}, err error) { |
| body, err := io.ReadAll(req.IngressRequest.Body) |
| if err != nil { |
| return nil, err |
| } |
| |
| paths := strings.Split(req.API.Path, "/") |
| if len(paths) < 3 { |
| return nil, perrors.New("failed to send message, broker or Topic not found") |
| } |
| |
| switch MQActionStrToInt[paths[0]] { |
| case MQActionPublish: |
| var pReq MQProduceRequest |
| err = json.Unmarshal(body, &pReq) |
| if err != nil { |
| return nil, err |
| } |
| err = c.producerFacade.Send(pReq.Msg, WithTopic(pReq.Topic)) |
| if err != nil { |
| return nil, err |
| } |
| case MQActionSubscribe: |
| var cReq MQSubscribeRequest |
| err = json.Unmarshal(body, &cReq) |
| if err != nil { |
| return nil, err |
| } |
| if _, ok := consumerFacadeMap.Load(cReq.ConsumerGroup); !ok { |
| facade, err := NewKafkaConsumerFacade(c.kafkaConsumerConfig, cReq.ConsumerGroup) |
| if err != nil { |
| return nil, err |
| } |
| consumerFacadeMap.Store(cReq.ConsumerGroup, facade) |
| if f, ok := consumerFacadeMap.Load(cReq.ConsumerGroup); ok { |
| cf := f.(ConsumerFacade) |
| ctx, cancel := context.WithTimeout(c.ctx, req.Timeout) |
| defer cancel() |
| err = cf.Subscribe(ctx, WithTopics(cReq.TopicList), WithConsumeUrl(cReq.ConsumeUrl), WithCheckUrl(cReq.CheckUrl), WithConsumerGroup(cReq.ConsumerGroup)) |
| if err != nil { |
| facade.Stop() |
| consumerFacadeMap.Delete(cReq.ConsumerGroup) |
| return nil, err |
| } |
| } |
| } |
| case MQActionUnSubscribe: |
| var cReq MQUnSubscribeRequest |
| err = json.Unmarshal(body, &cReq) |
| if err != nil { |
| return nil, err |
| } |
| if facade, ok := consumerFacadeMap.Load(cReq.ConsumerGroup); ok { |
| facade.(ConsumerFacade).Stop() |
| consumerFacadeMap.Delete(cReq.ConsumerGroup) |
| return nil, err |
| } |
| default: |
| return nil, perrors.New("failed to get mq action") |
| } |
| |
| return nil, nil |
| } |
| |
| func (c Client) MapParams(req *client.Request) (reqData interface{}, err error) { |
| return nil, perrors.New("map params does not support on mq mqClient") |
| } |