EventSystem.h

Go to the documentation of this file.

// -*- lsst-c++ -*-

/*
 * LSST Data Management System
 * Copyright 2008-2015  AURA/LSST.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the LSST License Statement and
 * the GNU General Public License along with this program.  If not,
 * see <https://www.lsstcorp.org/LegalNotices/>.
 */

#ifndef LSST_CTRL_EVENTS_EVENTSYSTEM_H
#define LSST_CTRL_EVENTS_EVENTSYSTEM_H

#include <stdlib.h>
#include <iostream>
#include <vector>
#include <list>

#include "lsst/daf/base/PropertySet.h"

#include "lsst/ctrl/events/EventTransmitter.h"
#include "lsst/ctrl/events/EventEnqueuer.h"
#include "lsst/ctrl/events/EventReceiver.h"
#include "lsst/ctrl/events/EventDequeuer.h"
#include "lsst/ctrl/events/Event.h"
#include "lsst/ctrl/events/StatusEvent.h"
#include "lsst/ctrl/events/CommandEvent.h"
#include "lsst/ctrl/events/EventBroker.h"

using lsst::daf::base::PropertySet;

namespace lsst {
namespace ctrl {
namespace events {

class EventSystem {
public:
    ~EventSystem();

    static EventSystem& getDefaultEventSystem();

    void createTransmitter(std::string const& hostName, std::string const& topicName, int hostPort = EventBroker::DEFAULTHOSTPORT);

    void createEnqueuer(std::string const& hostName, std::string const& queueName, int hostPort = EventBroker::DEFAULTHOSTPORT);

    void createReceiver(std::string const& hostName, std::string const& topicName, int hostPort = EventBroker::DEFAULTHOSTPORT);

    void createDequeuer(std::string const& hostName, std::string const& queueName, int hostPort = EventBroker::DEFAULTHOSTPORT);

    void createReceiver(std::string const& hostName, std::string const& topicName, std::string const& selector, int hostPort = EventBroker::DEFAULTHOSTPORT);

    void createDequeuer(std::string const& hostName, std::string const& queueName, std::string const& selector, int hostPort = EventBroker::DEFAULTHOSTPORT);

    void publishEvent(std::string const& destinationName, Event& event);

   PTR(Event) receiveEvent(std::string const& destinationName);

    PTR(Event) receiveEvent(std::string const& destinationName, const long timeout);

    PTR(LocationId) createOriginatorId() const;

    PTR(StatusEvent) castToStatusEvent(PTR(Event) event);

    PTR(CommandEvent) castToCommandEvent(PTR(Event) event);

private:
    static EventSystem *defaultEventSystem;

    PTR(Transmitter) getTransmitter(std::string const& name);
    PTR(Receiver) getReceiver(std::string const& name);

protected:
    EventSystem();


    static std::list<PTR(EventTransmitter) >_transmitters;
    static std::list<PTR(EventReceiver) >_receivers;

    static std::list<PTR(EventEnqueuer) >_enqueuers;
    static std::list<PTR(EventDequeuer) >_dequeuers;
};

}}}

#endif /*end LSST_CTRL_EVENTS_EVENTSYSTEM_H*/