natsio/jetstream_pubsub.go

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2021-12-02 03:29:52 +00:00
package natsio
import (
"errors"
"fmt"
"github.com/nats-io/nats.go"
)
// Publish ...
func (js JetStream) Publish(stream, subject string, payload []byte) error {
channel := combineStreamAndSubjectName(stream, subject)
_, err := js.instance.PublishAsync(channel, payload)
if err != nil {
msg := fmt.Sprintf("[NATS JETSTREAM] - publish message to subject %s error: %s", channel, err.Error())
return errors.New(msg)
}
return nil
}
// Subscribe ...
func (js JetStream) Subscribe(stream, subject string, cb nats.MsgHandler) (*nats.Subscription, error) {
channel := combineStreamAndSubjectName(stream, subject)
sub, err := js.instance.Subscribe(channel, cb)
if err != nil {
msg := fmt.Sprintf("[NATS JETSTREAM] - subscribe subject %s error: %s", channel, err.Error())
return nil, errors.New(msg)
}
return sub, nil
}