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producer.go
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/
producer.go
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package pulsarKit
import (
"context"
"github.com/apache/pulsar-client-go/pulsar"
"time"
)
type (
Producer struct {
pulsar.Client
pulsar.Producer
}
)
func (p *Producer) SendWithTimeout(pMsg *pulsar.ProducerMessage, timeout time.Duration) (pulsar.MessageID, error) {
ctx, cancel := context.WithTimeout(context.TODO(), timeout)
defer cancel()
return p.Send(ctx, pMsg)
}
func (p *Producer) Close() {
if p.Producer != nil {
p.Producer.Close()
}
if p.Client != nil {
p.Client.Close()
}
}
// NewProducerOriginally
/*
PS: 目标Pulsar服务未启动的情况下,如果ctx不加以限制,要过约 1min 才会返回error(期间客户端日志有connection refused输出).
@param options 必须的属性: Topic
建议的属性: SendTimeout
@param clientLogPath 客户端的日志输出(为空则输出到控制台; 不会rotate)
*/
func NewProducerOriginally(ctx context.Context, addresses []string, options pulsar.ProducerOptions, clientLogPath string) (*Producer, error) {
var client pulsar.Client
var producer pulsar.Producer
// 写入nil: 新建Producer成功
errCh := make(chan error, 1)
go func() {
var err error
client, err = NewClient(addresses, clientLogPath)
if err != nil {
errCh <- err
return
}
producer, err = client.CreateProducer(options)
if err != nil {
errCh <- err
return
}
select {
case <-ctx.Done():
// 新建Producer成功之前,ctx已经 超时 或 被取消 了,此时需要释放资源
if producer == nil {
producer.Close()
}
if client == nil {
client.Close()
}
errCh <- ctx.Err()
default:
errCh <- nil
}
}()
select {
case <-ctx.Done():
return nil, ctx.Err()
case err := <-errCh:
if err != nil {
return nil, err
}
return &Producer{
Client: client,
Producer: producer,
}, nil
}
}