Esempio n. 1
0
// NewChord creates Chord instance
func NewChord(group *Group, callback *signatures.TaskSignature) *Chord {
	// Generate a UUID for the chord callback
	callback.UUID = fmt.Sprintf("chord_%v", uuid.New())

	// Add a chord callback to all tasks
	for _, task := range group.Tasks {
		task.ChordCallback = callback
	}

	return &Chord{Group: group, Callback: callback}
}
Esempio n. 2
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// SendTask publishes a task to the default queue
func (server *Server) SendTask(signature *signatures.TaskSignature) (*backends.AsyncResult, error) {
	// Auto generate a UUID if not set already
	if signature.UUID == "" {
		signature.UUID = uuid.New()
	}

	if err := server.broker.Publish(signature); err != nil {
		return nil, fmt.Errorf("Publish Message: %v", err)
	}

	// Update task state to PENDING
	if err := server.backend.SetStatePending(signature); err != nil {
		return nil, fmt.Errorf("Set State Pending: %v", err)
	}

	return backends.NewAsyncResult(signature, server.backend), nil
}
Esempio n. 3
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// SendTask publishes a task to the default queue
func (server *Server) SendTask(signature *signatures.TaskSignature) (*backends.AsyncResult, error) {
	// Make sure result backend is defined
	if server.backend == nil {
		return nil, errors.New("Result backend required")
	}

	// Auto generate a UUID if not set already
	if signature.UUID == "" {
		signature.UUID = fmt.Sprintf("task_%v", uuid.New())
	}

	// Set initial task state to PENDING
	if err := server.backend.SetStatePending(signature); err != nil {
		return nil, fmt.Errorf("Set State Pending: %v", err)
	}

	if err := server.broker.Publish(signature); err != nil {
		return nil, fmt.Errorf("Publish Message: %v", err)
	}

	return backends.NewAsyncResult(signature, server.backend), nil
}