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subscriber.go
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subscriber.go
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package rocketmqClients
import (
"context"
"errors"
"sync"
rmqClient "github.com/apache/rocketmq-clients/golang/v5"
"github.com/tx7do/kratos-transport/broker"
)
type subscriber struct {
sync.RWMutex
r *rocketmqBroker
options broker.SubscribeOptions
handler broker.Handler
binder broker.Binder
topic string
closed bool
done chan error
reader rmqClient.SimpleConsumer
}
func (s *subscriber) Options() broker.SubscribeOptions {
s.RLock()
defer s.RUnlock()
return s.options
}
func (s *subscriber) Topic() string {
s.RLock()
defer s.RUnlock()
return s.topic
}
func (s *subscriber) Unsubscribe(removeFromManager bool) error {
s.Lock()
defer s.Unlock()
if s.closed {
return nil
}
var err error
if s.reader != nil {
err = s.reader.Unsubscribe(s.topic)
} else {
err = errors.New("reader is nil")
}
s.closed = true
if removeFromManager {
_ = s.r.subscribers.RemoveOnly(s.topic)
}
return err
}
func (s *subscriber) IsClosed() bool {
s.RLock()
defer s.RUnlock()
return s.closed
}
func (s *subscriber) onMessage(ctx context.Context, msg *rmqClient.MessageView) error {
if msg == nil {
return errors.New("message view is nil")
}
outMessage := broker.Message{}
if s.binder != nil {
outMessage.Body = s.binder()
} else {
outMessage.Body = msg.GetBody()
}
outMessage.Headers = msg.GetProperties()
p := publication{
ctx: ctx,
topic: msg.GetTopic(),
message: &outMessage,
reader: s.reader,
rmqMessage: msg,
}
if p.err = broker.Unmarshal(s.r.options.Codec, msg.GetBody(), &outMessage.Body); p.err != nil {
//log.Error("[redis]", err)
return p.err
}
if p.err = s.handler(ctx, &p); p.err != nil {
return p.err
}
if s.options.AutoAck {
if p.err = p.Ack(); p.err != nil {
return p.err
}
}
return nil
}