72 lines
1.7 KiB
Smarty
72 lines
1.7 KiB
Smarty
package events
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"time"
|
|
|
|
"git.ipao.vip/rogeecn/atom/contracts"
|
|
"github.com/ThreeDotsLabs/watermill"
|
|
"github.com/ThreeDotsLabs/watermill/message"
|
|
"github.com/sirupsen/logrus"
|
|
)
|
|
|
|
var _ contracts.EventHandler = (*UserRegister)(nil)
|
|
|
|
type Event struct {
|
|
ID int `json:"id"`
|
|
}
|
|
|
|
type ProcessedEvent struct {
|
|
ProcessedID int `json:"processed_id"`
|
|
Time time.Time `json:"time"`
|
|
}
|
|
|
|
// @provider(event)
|
|
type UserRegister struct {
|
|
log *logrus.Entry `inject:"false"`
|
|
}
|
|
|
|
func (u *UserRegister) Prepare() error {
|
|
return nil
|
|
}
|
|
|
|
// Handler implements contracts.EventHandler.
|
|
func (u *UserRegister) Handler(msg *message.Message) ([]*message.Message, error) {
|
|
consumedPayload := Event{}
|
|
err := json.Unmarshal(msg.Payload, &consumedPayload)
|
|
if err != nil {
|
|
// When a handler returns an error, the default behavior is to send a Nack (negative-acknowledgement).
|
|
// The message will be processed again.
|
|
//
|
|
// You can change the default behaviour by using middlewares, like Retry or PoisonQueue.
|
|
// You can also implement your own middleware.
|
|
return nil, err
|
|
}
|
|
|
|
fmt.Printf("received event %+v\n", consumedPayload)
|
|
|
|
newPayload, err := json.Marshal(ProcessedEvent{
|
|
ProcessedID: consumedPayload.ID,
|
|
Time: time.Now(),
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
newMessage := message.NewMessage(watermill.NewUUID(), newPayload)
|
|
|
|
return nil, nil
|
|
return []*message.Message{newMessage}, nil
|
|
}
|
|
|
|
// PublishToTopic implements contracts.EventHandler.
|
|
func (u *UserRegister) PublishToTopic() string {
|
|
return "event:processed"
|
|
}
|
|
|
|
// Topic implements contracts.EventHandler.
|
|
func (u *UserRegister) Topic() string {
|
|
return "event:user-register"
|
|
}
|