SPEC-1924: AGL Speech Framework's Voice Service High Level 1.0 Release.

Details:
1) Control plugin implementation for VSHL 1.0
2) Exposed APIs that are documented in the confluence page
   https://confluence.automotivelinux.org/display/SPE/Speech+EG+Architecture
3) Implemented 39 unit tests based on GTest framework to test all the low
level components of VSHL binding.
4) Implemented a HTML5 based VSHL API tester application to test VSHL APIs.

API specification:
https://confluence.automotivelinux.org/display/SPE/Speech+EG+Architecture#SpeechEGArchitecture-HighLevelVoiceService

Test performed:
1) Tested AGL service running Alexa Auto SDK https://github.com/alexa/aac-sdk on Ubuntu 16.04 and Renesas R-Car M3 board.

License:
Apache 2.0

Developers/Owners:
Naveen Bobbili (nbobbili@amazon.com)
Prakash Buddhiraja (buddhip@amazon.com)
Shotaro Uchida (shotaru@amazon.co.jp)

Change-Id: I3370f4ad65aff030f24f4ad571fb02d525bbfbca
Signed-off-by: Naveen Bobbili  <nbobbili@amazon.com>

1 files changed, 117 insertions, 0 deletions

diff --git a/src/plugins/capabilities/CapabilityMessagingService.cpp b/src/plugins/capabilities/CapabilityMessagingService.cpp
new file mode 100644
index 0000000..91b5f2b
--- /dev/null
+++ b/src/plugins/capabilities/CapabilityMessagingService.cpp
@@ -0,0 +1,117 @@
+/*
+ * 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/CapabilityMessagingService.h"
+
+#include "capabilities/core/include/PublisherForwarder.h"
+#include "capabilities/core/include/SubscriberForwarder.h"
+
+static string TAG = "vshl::capabilities::CapabilityMessagingService";
+
+using Level = vshl::common::interfaces::ILogger::Level;
+
+namespace vshl {
+namespace capabilities {
+
+// Create a CapabilityMessagingService.
+unique_ptr<CapabilityMessagingService> CapabilityMessagingService::create(
+    shared_ptr<vshl::common::interfaces::ILogger> logger,
+    shared_ptr<vshl::common::interfaces::IAFBApi> afbApi) {
+    if (logger == nullptr) {
+        return nullptr;
+    }
+
+    if (afbApi == nullptr) {
+        logger->log(Level::ERROR, TAG, "Failed to create CapabilityMessagingService: AFB API null");
+        return nullptr;
+    }
+
+    auto capabilityMessageService =
+        std::unique_ptr<CapabilityMessagingService>(new CapabilityMessagingService(logger, afbApi));
+    return capabilityMessageService;
+}
+
+CapabilityMessagingService::~CapabilityMessagingService() {
+    mMessageChannelsMap.clear();
+}
+
+CapabilityMessagingService::CapabilityMessagingService(
+    shared_ptr<vshl::common::interfaces::ILogger> logger,
+    shared_ptr<vshl::common::interfaces::IAFBApi> afbApi) :
+        mAfbApi(afbApi),
+        mLogger(logger) {
+}
+
+// Subscribe to capability specific messages.
+bool CapabilityMessagingService::subscribe(
+    vshl::common::interfaces::IAFBRequest& request,
+    shared_ptr<common::interfaces::ICapability> capability,
+    const string action) {
+    auto capabilityName = capability->getName();
+
+    if (capabilityName.empty()) {
+        mLogger->log(Level::ERROR, TAG, "Failed to subscribe to message. Invalid input.");
+        return false;
+    }
+
+    auto messageChannel = getMessageChannel(capability);
+    return messageChannel->subscribe(request, action);
+}
+
+// Publish capability messages.
+bool CapabilityMessagingService::publish(
+    shared_ptr<common::interfaces::ICapability> capability,
+    const string action,
+    const string payload) {
+    auto capabilityName = capability->getName();
+
+    if (capabilityName.empty()) {
+        mLogger->log(Level::ERROR, TAG, "Failed to publish message. Invalid input.");
+        return false;
+    }
+
+    auto messageChannelIt = mMessageChannelsMap.find(capabilityName);
+    if (messageChannelIt == mMessageChannelsMap.end()) {
+        mLogger->log(
+            Level::ERROR,
+            TAG,
+            "Failed to publish message. Message channel doesn't exist for capability " + capabilityName);
+        return false;
+    }
+
+    return messageChannelIt->second->publish(action, payload);
+}
+
+shared_ptr<vshl::capabilities::core::MessageChannel> CapabilityMessagingService::getMessageChannel(
+    shared_ptr<common::interfaces::ICapability> capability) {
+    auto capabilityName = capability->getName();
+
+    if (capabilityName.empty()) {
+        mLogger->log(Level::ERROR, TAG, "Failed to create message channel. Invalid input.");
+        return nullptr;
+    }
+
+    auto messageChannelIt = mMessageChannelsMap.find(capabilityName);
+    if (messageChannelIt == mMessageChannelsMap.end()) {
+        mLogger->log(Level::INFO, TAG, "Creating new message channel for capability: " + capabilityName);
+        auto messageChannel = vshl::capabilities::core::MessageChannel::create(mLogger, mAfbApi, capability);
+        mMessageChannelsMap.insert(make_pair(capabilityName, messageChannel));
+        return messageChannel;
+    }
+
+    return messageChannelIt->second;
+}
+
+}  // namespace capabilities
+}  // namespace vshl