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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_CAPABILITIES_CAPABILITYMESSAGINGSERVICE_H_
#define VSHL_CAPABILITIES_CAPABILITYMESSAGINGSERVICE_H_
#include <memory>
#include <string>
#include <unordered_map>
#include "capabilities/core/include/MessageChannel.h"
#include "interfaces/afb/IAFBApi.h"
#include "interfaces/capabilities/ICapability.h"
#include "interfaces/utilities/logging/ILogger.h"
using namespace std;
namespace vshl {
namespace capabilities {
/*
* This hosts service APIs that clients can use to subscribe and
* forward capability messages. Each capability has a name and
* direction (upstream/downstream). Upstream messages are from
* voiceagents to Apps and downstream messages are Apps to voiceagents.
* This class will use a factory to create publisher and subcribers for
* each capability and create assiociations between them.
*/
class CapabilityMessagingService {
public:
// Create a CapabilityMessagingService.
static std::unique_ptr<CapabilityMessagingService>
create(shared_ptr<vshl::common::interfaces::ILogger> logger,
shared_ptr<vshl::common::interfaces::IAFBApi> afbApi);
// Subscribe to capability specific messages.
bool subscribe(vshl::common::interfaces::IAFBRequest &request,
shared_ptr<common::interfaces::ICapability> capability,
const string action);
// Publish capability messages.
bool publish(shared_ptr<common::interfaces::ICapability> capability,
const string action, const string payload);
// Destructor
~CapabilityMessagingService();
private:
// Constructor
CapabilityMessagingService(
shared_ptr<vshl::common::interfaces::ILogger> logger,
shared_ptr<vshl::common::interfaces::IAFBApi> afbApi);
// Binding API reference
shared_ptr<vshl::common::interfaces::IAFBApi> mAfbApi;
// Create a message channel for the capability.
shared_ptr<vshl::capabilities::core::MessageChannel>
getMessageChannel(shared_ptr<common::interfaces::ICapability> capability);
// Map of capabilities to message channels.
unordered_map<string, shared_ptr<vshl::capabilities::core::MessageChannel>>
mMessageChannelsMap;
// Logger
shared_ptr<vshl::common::interfaces::ILogger> mLogger;
};
} // namespace capabilities
} // namespace vshl
#endif // VSHL_CAPABILITIES_CAPABILITYMESSAGINGSERVICE_H_
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