micro/broker/broker.go
2020-08-18 14:05:25 +01:00

32 lines
802 B
Go

// Package broker is an interface used for asynchronous messaging
package broker
// Broker is an interface used for asynchronous messaging.
type Broker interface {
Init(...Option) error
Options() Options
Address() string
Connect() error
Disconnect() error
Publish(topic string, m *Message, opts ...PublishOption) error
Subscribe(topic string, h Handler, opts ...SubscribeOption) (Subscriber, error)
String() string
}
// Handler is used to process messages via a subscription of a topic.
type Handler func(*Message) error
type ErrorHandler func(*Message, error)
type Message struct {
Header map[string]string
Body []byte
}
// Subscriber is a convenience return type for the Subscribe method
type Subscriber interface {
Options() SubscribeOptions
Topic() string
Unsubscribe() error
}