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producer.go
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producer.go
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package nsq
import (
"errors"
"github.com/dipperin/go-ms-toolkit/json"
"github.com/nsqio/go-nsq"
)
type Producer struct {
producers []*nsq.Producer
}
func NewNsqProducer(addrs []string) *Producer {
p := &Producer{}
for i := range addrs {
p.newProduce(addrs[i])
}
return p
}
func (p *Producer) newProduce(addr string) {
producer, err := nsq.NewProducer(addr, nsq.NewConfig())
if err != nil {
// todo 这里应该不用panic
panic(err)
}
p.producers = append(p.producers, producer)
}
func (p *Producer) PubMsg(topic string, msg interface{}) error {
producer, err := p.getProducer()
if err != nil {
return err
}
if msg == nil {
return errors.New("msg no nil")
}
bMsg, err := json.StringifyJsonToBytesWithErr(msg)
if err != nil {
return err
}
if err := producer.Publish(topic, bMsg); err != nil {
return err
}
return nil
}
func (p *Producer) getProducer() (*nsq.Producer, error) {
if len(p.producers) == 0 {
return nil, errors.New("no producer")
}
// todo 以后要随机取
producer := p.producers[0]
if producer == nil {
return nil, errors.New("get nil producer")
}
return producer, nil
}