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producer.go
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/
producer.go
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package core
import (
"sync"
"github.com/apache/pulsar-client-go/pulsar"
"github.com/goexl/gox"
"github.com/goexl/pulsar/internal/builder"
"github.com/goexl/pulsar/internal/callback"
"github.com/goexl/pulsar/internal/param"
)
type Producer[T any] struct {
get callback.GetClient
param *param.Producer[T]
producers *sync.Map
_ gox.CannotCopy
}
func NewProducer[T any](get callback.GetClient, param *param.Producer[T]) *Producer[T] {
return &Producer[T]{
get: get,
param: param,
producers: new(sync.Map),
}
}
func (p *Producer[T]) Send() *builder.Send[T] {
return builder.NewSend[T](p.getProducer)
}
func (p *Producer[T]) getProducer(config *param.Producer[T]) (producer pulsar.Producer, err error) {
if client, ge := p.get(config.Connection); nil != ge {
err = ge
} else if cached, ok := p.producers.Load(config.Key()); ok {
producer = cached.(pulsar.Producer)
} else {
producer, err = p.createProducer(client, config)
}
return
}
func (p *Producer[T]) createProducer(client pulsar.Client, config *param.Producer[T]) (producer pulsar.Producer, err error) {
options := pulsar.ProducerOptions{}
options.Name = config.Name
options.Topic = config.Topic
producer, err = client.CreateProducer(options)
return
}