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/*
* Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0/
*
* or in the "license" file accompanying this file. This file 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 VSHL_VOICEAGENTS_INCLUDE_VOICEAGENTSTATE_EVENT_HANDLER_H_
#define VSHL_VOICEAGENTS_INCLUDE_VOICEAGENTSTATE_EVENT_HANDLER_H_
#include <algorithm>
#include <memory>
#include <unordered_map>
#include "interfaces/afb/IAFBApi.h"
#include "interfaces/utilities/events/IEventFilter.h"
#include "interfaces/utilities/logging/ILogger.h"
#include "voiceagents/VoiceAgentEventNames.h"
#include "voiceagents/include/VoiceAgent.h"
using namespace std;
namespace vshl {
namespace voiceagents {
/*
* This class is reponsible for handling agent specific events
* subscription and delivery on behalf of the high level voice service.
* This class also listen to the incoming events from voice agents
* and implements propagation to application layer.
*/
class VoiceAgentEventsHandler : public vshl::common::interfaces::IEventFilter {
public:
// Create a VREventFilter.
static shared_ptr<VoiceAgentEventsHandler> create(
shared_ptr<vshl::common::interfaces::ILogger> logger,
shared_ptr<vshl::common::interfaces::IAFBApi> afbApi);
// Creates all the vshl events for a specific voiceagent id.
// For e.g if voiceagent is VA-001 then a new vshl event
// voice_authstate_event#VA-001 for auth state will be created.
// Please see VoiceAgentEventNames.h for all the event names.
void createVshlEventsForVoiceAgent(const string voiceAgentId);
// Removes the events from its bookkeeping.
void removeVshlEventsForVoiceAgent(const string voiceAgentId);
// Subscribe to a vshl event corresponding to a voiceagent.
bool subscribeToVshlEventFromVoiceAgent(
vshl::common::interfaces::IAFBRequest& request,
const string eventName,
const shared_ptr<VoiceAgent> voiceAgent);
~VoiceAgentEventsHandler();
protected:
string getName() override;
// IEventFilter override
bool onIncomingEvent(const string eventName, const string voiceAgentId, const string payload) override;
private:
// Constructor
VoiceAgentEventsHandler(
shared_ptr<vshl::common::interfaces::ILogger> logger,
shared_ptr<vshl::common::interfaces::IAFBApi> afbApi);
// Helper method to generate the event name with voiceagent Id
// concatenated.
string createEventNameWithVAId(string eventName, string voiceAgentId);
// call subscribe verb on the voiceagent. True if subscription successful.
// False otherwise.
bool callSubscribeVerb(const shared_ptr<VoiceAgent> voiceAgent);
// Binding API reference
shared_ptr<vshl::common::interfaces::IAFBApi> mAfbApi;
// A map of VSHL event ID to its Event object
unordered_map<string, shared_ptr<common::interfaces::IAFBApi::IAFBEvent>> mEventsMap;
// Logger
shared_ptr<vshl::common::interfaces::ILogger> mLogger;
};
} // namespace voiceagents
} // namespace vshl
#endif // VSHL_VOICEAGENTS_INCLUDE_VOICEAGENTSTATE_EVENT_HANDLER_H_
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