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bathyscaphe/internal/util/nats/nats.go

35 lines
831 B
Go

package nats
import (
"encoding/json"
"fmt"
"github.com/nats-io/nats.go"
)
func PublishMsg(nc *nats.Conn, msg Msg) error {
return PublishJSON(nc, msg.Subject(), msg)
}
func ReadMsg(nc *nats.Msg, msg Msg) error {
return ReadJSON(nc, msg)
}
// PublishJSON publish given message serialized in json with given subject
func PublishJSON(nc *nats.Conn, subject string, msg interface{}) error {
msgBytes, err := json.Marshal(msg)
if err != nil {
return fmt.Errorf("error while encoding message: %s", err)
}
return nc.Publish(subject, msgBytes)
}
// ReadJSON read given encoded json message and deserialize into into given structure
func ReadJSON(msg *nats.Msg, body interface{}) error {
if err := json.Unmarshal(msg.Data, body); err != nil {
return fmt.Errorf("error while decoding message: %s", err)
}
return nil
}