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-rw-r--r--src/plugins/capabilities/core/include/MessageChannel.h68
-rw-r--r--src/plugins/capabilities/core/include/PublisherForwarder.h73
-rw-r--r--src/plugins/capabilities/core/include/SubscriberForwarder.h84
-rw-r--r--src/plugins/capabilities/core/src/MessageChannel.cpp51
-rw-r--r--src/plugins/capabilities/core/src/PublisherForwarder.cpp69
-rw-r--r--src/plugins/capabilities/core/src/SubscriberForwarder.cpp139
6 files changed, 484 insertions, 0 deletions
diff --git a/src/plugins/capabilities/core/include/MessageChannel.h b/src/plugins/capabilities/core/include/MessageChannel.h
new file mode 100644
index 0000000..79e4eab
--- /dev/null
+++ b/src/plugins/capabilities/core/include/MessageChannel.h
@@ -0,0 +1,68 @@
+/*
+ * 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_CORE_MESSAGECHANNEL_H_
+#define VSHL_CAPABILITIES_CORE_MESSAGECHANNEL_H_
+
+#include <memory>
+
+#include "capabilities/core/include/PublisherForwarder.h"
+#include "capabilities/core/include/SubscriberForwarder.h"
+#include "interfaces/afb/IAFBApi.h"
+#include "interfaces/capabilities/ICapability.h"
+#include "interfaces/utilities/logging/ILogger.h"
+
+using namespace std;
+
+namespace vshlcapabilities {
+namespace capabilities {
+namespace core {
+/*
+ * MessageChannel has one end as publisher forwarder and the other end
+ * as subscriber forwarder.
+ */
+class MessageChannel {
+public:
+ // Create a MessageChannel.
+ static std::shared_ptr<MessageChannel>
+ create(shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> afbApi,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability);
+
+ // Sends the message
+ bool publish(const string action, json_object* payload);
+
+ // Subscribe
+ bool subscribe(vshlcapabilities::common::interfaces::IAFBRequest &request,
+ const string action);
+
+ // Destructor
+ virtual ~MessageChannel() = default;
+
+private:
+ // Constructor
+ MessageChannel(shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> afbApi,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability);
+
+ // Forwarders
+ shared_ptr<PublisherForwarder> mPublisherForwarder;
+ shared_ptr<SubscriberForwarder> mSubscriberForwarder;
+};
+
+} // namespace core
+} // namespace capabilities
+} // namespace vshl
+
+#endif // VSHL_CAPABILITIES_CORE_MESSAGECHANNEL_H_
diff --git a/src/plugins/capabilities/core/include/PublisherForwarder.h b/src/plugins/capabilities/core/include/PublisherForwarder.h
new file mode 100644
index 0000000..01e9523
--- /dev/null
+++ b/src/plugins/capabilities/core/include/PublisherForwarder.h
@@ -0,0 +1,73 @@
+/*
+ * 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_CORE_PUBLISHERFORWARDER_H_
+#define VSHL_CAPABILITIES_CORE_PUBLISHERFORWARDER_H_
+
+#include <memory>
+
+#include "capabilities/core/include/SubscriberForwarder.h"
+
+#include "interfaces/afb/IAFBApi.h"
+#include "interfaces/capabilities/ICapability.h"
+#include "interfaces/utilities/logging/ILogger.h"
+
+using namespace std;
+
+namespace vshlcapabilities {
+namespace capabilities {
+namespace core {
+/*
+ * This class is responsible for forwarding the messages to be published
+ * to subscriber forwarder. Subscriber forwarder will deliver the messages
+ * as AFB Events to all the subscribed clients.
+ * There is one PublisherForwarder and one SubscriberForwarder per capability.
+ */
+class PublisherForwarder {
+public:
+ // Create a PublisherForwarder.
+ static std::shared_ptr<PublisherForwarder> create(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability);
+
+ // Connect a subscriber forwarder to this publisher forwarder
+ void setSubscriberForwarder(shared_ptr<SubscriberForwarder> subscriberForwarder);
+
+ // Forward message to the subscriber forwarder
+ bool forwardMessage(const string action, json_object* payload);
+
+ // Destructor
+ ~PublisherForwarder();
+
+private:
+ // Constructor
+ PublisherForwarder(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability);
+
+ // Subscriber forwarder connected to this publisher forwarder.
+ shared_ptr<SubscriberForwarder> mSubscriberForwarder;
+
+ // Capability
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> mCapability;
+
+ // Logger
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> mLogger;
+};
+
+} // namespace core
+} // namespace capabilities
+} // namespace vshl
+
+#endif // VSHL_CAPABILITIES_CORE_PUBLISHERFORWARDER_H_
diff --git a/src/plugins/capabilities/core/include/SubscriberForwarder.h b/src/plugins/capabilities/core/include/SubscriberForwarder.h
new file mode 100644
index 0000000..ac469b3
--- /dev/null
+++ b/src/plugins/capabilities/core/include/SubscriberForwarder.h
@@ -0,0 +1,84 @@
+/*
+ * 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_CORE_SUBSCRIBERFORWARDER_H_
+#define VSHL_CAPABILITIES_CORE_SUBSCRIBERFORWARDER_H_
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include "interfaces/afb/IAFBApi.h"
+#include "interfaces/capabilities/ICapability.h"
+#include "interfaces/utilities/logging/ILogger.h"
+
+using namespace std;
+
+namespace vshlcapabilities {
+namespace capabilities {
+namespace core {
+/*
+ * This class is responsible for forwarding the messages publishing
+ * to the actual clients using AFB.
+ */
+class SubscriberForwarder {
+public:
+ // Create a SubscriberForwarder.
+ static std::shared_ptr<SubscriberForwarder>
+ create(shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> afbApi,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability);
+
+ // Publish a capability message to the actual client.
+ bool forwardMessage(const string action, json_object* payload);
+
+ // Subscribe
+ bool subscribe(vshlcapabilities::common::interfaces::IAFBRequest &request,
+ const string action);
+
+ // Destructor
+ ~SubscriberForwarder();
+
+private:
+ // Constructor
+ SubscriberForwarder(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> afbApi,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability);
+
+ // Creates both upstream and downstream events
+ void createEvents();
+
+ // Binding API reference
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> mAfbApi;
+
+ // Capability
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> mCapability;
+
+ // Maps of capability action events to its corresponding Event object.
+ // Event name maps to Action Name
+ unordered_map<string, shared_ptr<common::interfaces::IAFBApi::IAFBEvent>>
+ mUpstreamEventsMap;
+ unordered_map<string, shared_ptr<common::interfaces::IAFBApi::IAFBEvent>>
+ mDownstreamEventsMap;
+
+ // Logger
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> mLogger;
+};
+
+} // namespace core
+} // namespace capabilities
+} // namespace vshl
+
+#endif // VSHL_CAPABILITIES_CORE_SUBSCRIBERFORWARDER_H_
diff --git a/src/plugins/capabilities/core/src/MessageChannel.cpp b/src/plugins/capabilities/core/src/MessageChannel.cpp
new file mode 100644
index 0000000..f4e55dd
--- /dev/null
+++ b/src/plugins/capabilities/core/src/MessageChannel.cpp
@@ -0,0 +1,51 @@
+/*
+ * 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.
+ */
+#include "capabilities/core/include/MessageChannel.h"
+
+namespace vshlcapabilities {
+namespace capabilities {
+namespace core {
+
+// Create a MessageChannel.
+std::shared_ptr<MessageChannel> MessageChannel::create(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> api,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability) {
+ auto messageChannel = std::shared_ptr<MessageChannel>(new MessageChannel(logger, api, capability));
+ return messageChannel;
+}
+
+MessageChannel::MessageChannel(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> api,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability) {
+ // Subscriber forwarder
+ mSubscriberForwarder = SubscriberForwarder::create(logger, api, capability);
+ // Publisher forwarder
+ mPublisherForwarder = PublisherForwarder::create(logger, capability);
+ mPublisherForwarder->setSubscriberForwarder(mSubscriberForwarder);
+}
+
+bool MessageChannel::publish(const string action, json_object* payload) {
+ return mPublisherForwarder->forwardMessage(action, payload);
+}
+
+bool MessageChannel::subscribe(vshlcapabilities::common::interfaces::IAFBRequest& request, const string action) {
+ return mSubscriberForwarder->subscribe(request, action);
+}
+
+} // namespace core
+} // namespace capabilities
+} // namespace vshl
diff --git a/src/plugins/capabilities/core/src/PublisherForwarder.cpp b/src/plugins/capabilities/core/src/PublisherForwarder.cpp
new file mode 100644
index 0000000..8f8f542
--- /dev/null
+++ b/src/plugins/capabilities/core/src/PublisherForwarder.cpp
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ */
+#include "capabilities/core/include/PublisherForwarder.h"
+
+static string TAG = "vshlcapabilities::capabilities::PublisherForwarder";
+
+using Level = vshlcapabilities::common::interfaces::ILogger::Level;
+
+namespace vshlcapabilities {
+namespace capabilities {
+namespace core {
+
+// Create a PublisherForwarder.
+std::shared_ptr<PublisherForwarder> PublisherForwarder::create(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability) {
+ if (logger == nullptr) {
+ return nullptr;
+ }
+
+ if (capability == nullptr) {
+ logger->log(Level::ERROR, TAG, "Failed to create PublisherForwarder: Capability null");
+ return nullptr;
+ }
+
+ auto publisherForwarder = std::shared_ptr<PublisherForwarder>(new PublisherForwarder(logger, capability));
+ return publisherForwarder;
+}
+
+// Constructor
+PublisherForwarder::PublisherForwarder(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability) {
+ mCapability = capability;
+ mLogger = logger;
+}
+
+// Destructor
+PublisherForwarder::~PublisherForwarder() {
+}
+
+void PublisherForwarder::setSubscriberForwarder(shared_ptr<SubscriberForwarder> subscriberForwarder) {
+ mSubscriberForwarder = subscriberForwarder;
+}
+
+bool PublisherForwarder::forwardMessage(const string action, json_object* payload) {
+ if (!mSubscriberForwarder) {
+ mLogger->log(Level::ERROR, TAG, "Failed to forward message for capability: " + mCapability->getName());
+ return false;
+ }
+
+ return mSubscriberForwarder->forwardMessage(action, payload);
+}
+
+} // namespace core
+} // namespace capabilities
+} // namespace vshl
diff --git a/src/plugins/capabilities/core/src/SubscriberForwarder.cpp b/src/plugins/capabilities/core/src/SubscriberForwarder.cpp
new file mode 100644
index 0000000..970dbf0
--- /dev/null
+++ b/src/plugins/capabilities/core/src/SubscriberForwarder.cpp
@@ -0,0 +1,139 @@
+/*
+ * 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.
+ */
+#include "capabilities/core/include/SubscriberForwarder.h"
+
+static string TAG = "vshlcapabilities::capabilities::SubscriberForwarder";
+
+using Level = vshlcapabilities::common::interfaces::ILogger::Level;
+
+namespace vshlcapabilities {
+namespace capabilities {
+namespace core {
+
+// Create a SubscriberForwarder.
+std::shared_ptr<SubscriberForwarder> SubscriberForwarder::create(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> afbApi,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability) {
+ if (logger == nullptr) {
+ return nullptr;
+ }
+
+ if (afbApi == nullptr) {
+ logger->log(Level::ERROR, TAG, "Failed to create SubscriberForwarder: AFB API null");
+ return nullptr;
+ }
+
+ if (capability == nullptr) {
+ logger->log(Level::ERROR, TAG, "Failed to create SubscriberForwarder: Capability null");
+ return nullptr;
+ }
+
+ auto subscriberForwarder =
+ std::shared_ptr<SubscriberForwarder>(new SubscriberForwarder(logger, afbApi, capability));
+ return subscriberForwarder;
+}
+
+SubscriberForwarder::SubscriberForwarder(
+ shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
+ shared_ptr<vshlcapabilities::common::interfaces::IAFBApi> afbApi,
+ shared_ptr<vshlcapabilities::common::interfaces::ICapability> capability) :
+ mAfbApi(afbApi),
+ mLogger(logger),
+ mCapability(capability) {
+ createEvents();
+}
+
+SubscriberForwarder::~SubscriberForwarder() {
+ mUpstreamEventsMap.clear();
+ mDownstreamEventsMap.clear();
+}
+
+void SubscriberForwarder::createEvents() {
+ if (!mCapability) {
+ mLogger->log(Level::NOTICE, TAG, "Create Events failed. No capability assigned.");
+ return;
+ }
+
+ // Upstream events
+ auto upstreamEvents = mCapability->getUpstreamMessages();
+ for (auto upstreamEventName : upstreamEvents) {
+ auto it = mUpstreamEventsMap.find(upstreamEventName);
+ if (it == mUpstreamEventsMap.end() && mAfbApi) {
+ // create a new event and add it to the map.
+ shared_ptr<common::interfaces::IAFBApi::IAFBEvent> event = mAfbApi->createEvent(upstreamEventName);
+ if (event == nullptr) {
+ mLogger->log(Level::ERROR, TAG, "Failed to create upstream event: " + upstreamEventName);
+ } else {
+ mUpstreamEventsMap.insert(make_pair(upstreamEventName, event));
+ }
+ }
+ }
+
+ // Downstream events
+ auto downstreamEvents = mCapability->getDownstreamMessages();
+ for (auto downstreamEventName : downstreamEvents) {
+ auto it = mDownstreamEventsMap.find(downstreamEventName);
+ if (it == mDownstreamEventsMap.end() && mAfbApi) {
+ // create a new event and add it to the map.
+ shared_ptr<common::interfaces::IAFBApi::IAFBEvent> event = mAfbApi->createEvent(downstreamEventName);
+ if (event == nullptr) {
+ mLogger->log(Level::ERROR, TAG, "Failed to create downstream event: " + downstreamEventName);
+ } else {
+ mDownstreamEventsMap.insert(make_pair(downstreamEventName, event));
+ }
+ }
+ }
+}
+
+bool SubscriberForwarder::forwardMessage(const string action, json_object* payload) {
+ auto upstreamEventIt = mUpstreamEventsMap.find(action);
+ if (upstreamEventIt != mUpstreamEventsMap.end()) {
+ mLogger->log(Level::NOTICE, TAG, "Publishing upstream event: " + action);
+ upstreamEventIt->second->publishEvent(payload);
+ return true;
+ }
+
+ auto downstreamEventIt = mDownstreamEventsMap.find(action);
+ if (downstreamEventIt != mDownstreamEventsMap.end()) {
+ mLogger->log(Level::NOTICE, TAG, "Publishing downstream event: " + action);
+ downstreamEventIt->second->publishEvent(payload);
+ return true;
+ }
+
+ mLogger->log(Level::NOTICE, TAG, "Failed to publish upstream event: " + action);
+ return false;
+}
+
+bool SubscriberForwarder::subscribe(vshlcapabilities::common::interfaces::IAFBRequest& request, const string action) {
+ auto upstreamEventIt = mUpstreamEventsMap.find(action);
+ if (upstreamEventIt != mUpstreamEventsMap.end()) {
+ mLogger->log(Level::NOTICE, TAG, "Subscribing to upstream event: " + action);
+ return upstreamEventIt->second->subscribe(request);
+ }
+
+ auto downstreamEventIt = mDownstreamEventsMap.find(action);
+ if (downstreamEventIt != mDownstreamEventsMap.end()) {
+ mLogger->log(Level::NOTICE, TAG, "Subscribing to downstream event: " + action);
+ return downstreamEventIt->second->subscribe(request);
+ }
+
+ mLogger->log(Level::NOTICE, TAG, "Failed to subscribe to upstream event: " + action);
+ return false;
+}
+
+} // namespace core
+} // namespace capabilities
+} // namespace vshl