25 lines
699 B
Go
25 lines
699 B
Go
// +build !change
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package pubsub
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import "context"
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// MsgHandler is a callback function that processes messages delivered to subscribers.
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type MsgHandler func(msg interface{})
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type Subscription interface {
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// Unsubscribe will remove interest in the given subject.
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Unsubscribe()
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}
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type PubSub interface {
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// Subscribe creates an asynchronous queue subscriber on the given subject.
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Subscribe(subj string, cb MsgHandler) (Subscription, error)
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// Publish publishes the msg argument to the given subject.
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Publish(subj string, msg interface{}) error
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// Close will shutdown pub-sub system.
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// May be blocked by data delivery until the context is canceled.
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Close(ctx context.Context) error
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}
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