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publish new blog posts into a message queue
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| package blog | ||
|
|
||
| type MessageQueueService interface { | ||
| Publish(topic string, message []byte) error | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| package rabbitmq | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| amqp "github.com/rabbitmq/amqp091-go" | ||
| ) | ||
|
|
||
| type MessageQueueService struct { | ||
| ch *amqp.Channel | ||
| } | ||
|
|
||
| func NewMessageQueueService(url string) (*MessageQueueService, error) { | ||
| conn, err := amqp.Dial(url) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| ch, err := conn.Channel() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &MessageQueueService{ | ||
| ch: ch, | ||
| }, nil | ||
| } | ||
|
|
||
| func (s *MessageQueueService) Publish(topic string, message []byte) error { | ||
| ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) | ||
| defer cancel() | ||
|
|
||
| q, err := s.ch.QueueDeclare( | ||
| topic, | ||
| false, | ||
| false, | ||
| false, | ||
| false, | ||
| nil, | ||
| ) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := s.ch.PublishWithContext(ctx, | ||
| "", | ||
| q.Name, | ||
| false, | ||
| false, | ||
| amqp.Publishing{ | ||
| ContentType: "text/plain", | ||
| Body: message, | ||
| }, | ||
| ); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } |