DefaultOperationLongPollChannel.hpp

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/*
 * Copyright 2014 CyberVision, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef DEFAULTOPERATIONLONGPOLLCHANNEL_HPP_
#define DEFAULTOPERATIONLONGPOLLCHANNEL_HPP_

#include "kaa/KaaDefaults.hpp"

#include <cstdint>
#include <thread>

#include <boost/asio.hpp>

#include "kaa/KaaThread.hpp"
#include "kaa/channel/IDataChannel.hpp"
#include "kaa/http/HttpClient.hpp"
#include "kaa/security/KeyUtils.hpp"
#include "kaa/transport/HttpDataProcessor.hpp"
#include "kaa/channel/IKaaChannelManager.hpp"
#include "kaa/security/SecurityDefinitions.hpp"
#include "kaa/channel/IPTransportInfo.hpp"
#include "kaa/channel/ITransportConnectionInfo.hpp"
#include "kaa/channel/TransportProtocolIdConstants.hpp"

namespace kaa {

class DefaultOperationLongPollChannel : public IDataChannel {
public:
    DefaultOperationLongPollChannel(IKaaChannelManager *channelManager, const KeyPair& clientKeys);
    virtual ~DefaultOperationLongPollChannel();

    virtual void sync(TransportType type);
    virtual void syncAll();
    virtual void syncAck(TransportType type);
    virtual const std::string& getId() const { return CHANNEL_ID; }

    virtual TransportProtocolId getTransportProtocolId() const {
        return TransportProtocolIdConstants::HTTP_TRANSPORT_ID;
    }

    virtual ServerType getServerType() const {
        return ServerType::OPERATIONS;
    }

    virtual void setMultiplexer(IKaaDataMultiplexer *multiplexer);
    virtual void setDemultiplexer(IKaaDataDemultiplexer *demultiplexer);
    virtual void setServer(ITransportConnectionInfoPtr server);

    virtual const std::map<TransportType, ChannelDirection>& getSupportedTransportTypes() const {
        return SUPPORTED_TYPES;
    }

    virtual void shutdown();
    virtual void pause();
    virtual void resume();

    virtual void setFailoverStrategy(IFailoverStrategyPtr strategy) {}
    virtual void setConnectivityChecker(ConnectivityCheckerPtr checker) {}

    virtual ITransportConnectionInfoPtr getServer() {
        return std::dynamic_pointer_cast<ITransportConnectionInfo, IPTransportInfo>(currentServer_);
    }

protected:
    std::string getURLSuffix() {
        return "/EP/LongSync";
    }

private:
    void startPoll();
    void stopPoll();
    void postTask();
    void executeTask();
    void doShutdown();

private:
    static const std::string CHANNEL_ID;
    static const std::map<TransportType, ChannelDirection> SUPPORTED_TYPES;

    KeyPair clientKeys_;

    boost::asio::io_service io_;
    boost::asio::io_service::work work_;
    std::thread pollThread_;
    bool stopped_;
    bool isShutdown_;
    bool isPaused_;
    bool connectionInProgress_;
    bool taskPosted_;
    bool firstStart_;
    IKaaDataMultiplexer *multiplexer_;
    IKaaDataDemultiplexer *demultiplexer_;
    IKaaChannelManager *channelManager_;
    std::shared_ptr<IPTransportInfo> currentServer_;
    HttpDataProcessor httpDataProcessor_;
    HttpClient httpClient_;
    KAA_CONDITION_VARIABLE_DECLARE(waitCondition_);
    KAA_MUTEX_DECLARE(conditionMutex_);
    KAA_MUTEX_DECLARE(channelGuard_);
};

}

#endif /* DEFAULTOPERATIONLONGPOLLCHANNEL_HPP_ */