84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
package rocketmqx
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import (
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"sync"
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"time"
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"github.com/apache/rocketmq-client-go/v2"
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"github.com/apache/rocketmq-client-go/v2/primitive"
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"github.com/apache/rocketmq-client-go/v2/producer"
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)
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type MqProducer struct {
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brokerAddr []string
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retries int
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timeout time.Duration
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groupMap sync.Map
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lock sync.Mutex
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}
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var pro *MqProducer
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var once sync.Once
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func InitProducer(brokerAddr []string, retries int, timeout time.Duration) *MqProducer {
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// 只能初始化一次
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once.Do(func() {
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pro = &MqProducer{
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brokerAddr: brokerAddr,
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retries: retries,
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timeout: timeout,
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groupMap: sync.Map{},
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lock: sync.Mutex{},
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}
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})
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return pro
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}
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// 使用注意事项：一个服务同一个group只能有一个producer，否则会出现消息重复消费的问题
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func (m *MqProducer) GetClient(group string) (rocketmq.Producer, error) {
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val, ok := m.groupMap.Load(group)
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if ok {
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return val.(rocketmq.Producer), nil
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}
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m.lock.Lock()
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defer m.lock.Unlock()
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p, err := rocketmq.NewProducer(
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producer.WithNsResolver(primitive.NewPassthroughResolver(m.brokerAddr)),
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producer.WithRetry(m.retries),
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producer.WithGroupName(group),
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producer.WithSendMsgTimeout(m.timeout),
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)
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if err != nil {
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return nil, err
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}
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err = p.Start()
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if err != nil {
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return nil, err
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}
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m.groupMap.Store(group, p)
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return p, nil
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}
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// @param level 消息延迟时间等级 [0]0s [1]1s [2]5s [3]10s [4]30s [5]1m [6]2m [7]3m [8]4m [9]5m [10]6m [11]7m [12]8m [13]9m [14]10m [15]20m [16]30m [17]1h [18]2h
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func BuildMessage(msg, topic, tags string, keys []string, level int) *primitive.Message {
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message := &primitive.Message{
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Topic: topic,
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Body: []byte(msg),
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}
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if len(tags) > 0 {
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//指定标签
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message.WithTag(tags)
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}
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if len(keys) > 0 {
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// 业务逻辑key 保证消费幂等
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message.WithKeys(keys)
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}
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if level > 0 {
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// 设置要消耗的消息延迟时间等级
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message.WithDelayTimeLevel(level)
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}
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return message
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}
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