Esempio n. 1
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// Balances a message to one of the subscribed nodes.
func (o *Overlay) Balance(topic string, msg *proto.Message) error {
	if err := msg.Encrypt(); err != nil {
		return err
	}
	o.sendBalance(pastry.Resolve(topic), msg)
	return nil
}
Esempio n. 2
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// Removes the subscription from topic.
func (o *Overlay) Unsubscribe(topic string) error {
	// Resolve the topic id
	id := pastry.Resolve(topic)
	sid := id.String()

	// Remove the topic name mapping
	o.lock.Lock()
	delete(o.names, sid)
	o.lock.Unlock()

	// Remove the scribe subscription
	return o.handleUnsubscribe(o.pastry.Self(), id)
}
Esempio n. 3
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// Subscribes to the specified scribe topic.
func (o *Overlay) Subscribe(topic string) error {
	// Resolve the topic id
	id := pastry.Resolve(topic)
	sid := id.String()

	// Make sure we can map the id back to the textual name
	o.lock.RLock()
	_, ok := o.names[sid]
	o.lock.RUnlock()
	if !ok {
		o.lock.Lock()
		o.names[sid] = topic
		o.lock.Unlock()
	}
	// Subscribe the local node to the topic
	return o.handleSubscribe(o.pastry.Self(), id)
}