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27 lines
731 B
Go
27 lines
731 B
Go
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package messaging
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// Publisher specifies message publishing API.
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type Publisher interface {
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// Publishes message to the stream.
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Publish(topic string, msg Message) error
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}
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// MessageHandler represents Message handler for Subscriber.
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type MessageHandler func(msg Message) error
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// Subscriber specifies message subscription API.
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type Subscriber interface {
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// Subscribe subscribes to the message stream and consumes messages.
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Subscribe(topic string, handler MessageHandler) error
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// Unsubscribe unsubscribes from the message stream and
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// stops consuming messages.
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Unsubscribe(topic string) error
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}
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// PubSub represents aggregation interface for publisher and subscriber.
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type PubSub interface {
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Publisher
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Subscriber
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}
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