add MQTT client tested

.vscode/settings.json

@@ -52,7 +52,22 @@
         "cinttypes": "cpp",
         "type_traits": "cpp",
         "typeindex": "cpp",
-        "typeinfo": "cpp"
+        "typeinfo": "cpp",
+        "any": "cpp",
+        "complex": "cpp",
+        "list": "cpp",
+        "algorithm": "cpp",
+        "iterator": "cpp",
+        "map": "cpp",
+        "memory_resource": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "set": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "cfenv": "cpp",
+        "valarray": "cpp",
+        "variant": "cpp"
     },
     "cmake.configureOnOpen": true
 }
\ No newline at end of file

CMakeLists.txt

@@ -2,8 +2,8 @@ cmake_minimum_required(VERSION 3.0)
 project(Microservice)
 # version stuff
 set (Microservice_VERSION_MAJOR 1)
-set (Microservice_VERSION_MINOR 6)
-set (Microservice_VERSION_PATCH 1)
+set (Microservice_VERSION_MINOR 7)
+set (Microservice_VERSION_PATCH 0)
 set(Microservice_VERSION_STRING ${Microservice_VERSION_MAJOR}.${Microservice_VERSION_MINOR}.${Microservice_VERSION_PATCH})
 
 # type build flags 
@@ -172,7 +172,7 @@ include(CPack)
 #gradle uploadArchives -Pcversion=[version] -Ppublish_file=[the gz file]
 # install lib files
 #
-install(TARGETS Microservice MicroserviceRedis MicroserviceZmq DESTINATION lib)
+install(TARGETS Microservice MicroserviceRedis MicroserviceZmq MicroserviceMqtt DESTINATION lib)
 
 set(PUBLISH_FILE target/${CPACK_PACKAGE_FILE_NAME}-${CPACK_SYSTEM_NAME}.tar.gz)
 add_custom_target(publish COMMAND gradle uploadArchives -Pcversion=${Microservice_VERSION_STRING} -Ppublish_file=${PUBLISH_FILE})

README.md

 ## C++ Microservice Framework
 * to create microservice docker run script/build_microservice_docker.sh [version]
 ## VERSIONS:
+# 1.7.0 
+- add MQTT client support
+
 # 1.6.1
 - remove RabbitMQ for now, remove log4cpp, cpprestsdk
 - use stripped version off pplx (without cpprestsdk)

script/install-vcpkg-dependencies.sh

@@ -18,4 +18,4 @@ echo "Installing vcpkg packages..."
 /home/vscode/vcpkg/vcpkg install evpp  \
   spdlog nlohmann-json cereal rapidjson flatbuffers poco  \
   hiredis glog libuuid boost-foreach boost-chrono boost-thread \
-  boost-asio boost-random
+  boost-asio boost-random paho-mqtt

src/common/Microservice_Defines.h

@@ -65,6 +65,7 @@ namespace nsMicroservice_Constants
     static const std::string RCID_HEADER = std::string("X-RCID");
     static const char* FAILED_BUILD_URI = "Failed to build uri";
     static const int CACHE_TIMEOUT = 30000;
+    static const int CLOSE_WAIT_MSEC = 1000;
 }
 
 /*

src/impl/mqtt/MSIPubSubClientMqttImpl.h

@@ -10,7 +10,8 @@
 #include <thread>
 #include <queue>
 #include <common/Microservice_PubSubContext.h>
-#include <paho-mqtt/MQTTClient.h>
+// #include <paho-mqtt/MQTTClient.h>
+#include <paho-mqtt/MQTTAsync.h>
 
 namespace evpp {
     class EventLoop;
@@ -38,25 +39,39 @@ public:
     virtual void subscribe(std::string &topic, OnMessageCallback msgCllback, OnErrorCallback errorCallback) override;
     virtual void unsubscribe(std::string &topic) override;
 
-    void Delivered(MQTTClient_deliveryToken dt);
-    int OnMessage(char *topicName, int topicLen, MQTTClient_message *message);
+    // callback section
+    void OnMessage(char *topicName, int topicLen, MQTTAsync_message *message);
     void ConnectionLost(char *cause);
-    std::string getTopicNoWildcards(std::string &topic);
+    void OnDelivered(MQTTAsync_token dt);
+    void OnConnected(char *cause);
+    void OnSubscribe(MQTTAsync_successData* response);
+    void OnSubscribeFailure(MQTTAsync_failureData* response);
+    void OnPublishFailure(MQTTAsync_failureData* response);
+    void OnConnectFailure(MQTTAsync_failureData* response);
+    void OnDisconnected();
 
 private:
+    std::string GetTopicNoWildcards(std::string &topic);
     std::string GetAddress();
     void CloseConnection();
-    void Connect();
+    void connect();
+    void InitSubscribeParams();
+    void InitPublishParams();
     
 private:
     Microservice_MqttBrokerParams params_;
-    MQTTClient client_;
-    MQTTClient_connectOptions conn_opts_;// = MQTTClient_connectOptions_initializer;
+    MQTTAsync client_;
+    MQTTAsync_connectOptions conn_opts_;// = MQTTAsync_connectOptions_initializer;
+    MQTTAsync_responseOptions subRespOpts_;
+    MQTTAsync_responseOptions pubRespOpts_;
     nsMicroservice_Iface::ILogger* p_logger_;
 
     std::unordered_map<std::string,Item> items_map_;
     std::mutex queue_lock_;
 
+    std::mutex closeMutex_;
+    std::condition_variable closeCondition_;
+
     evpp::EventLoop* p_loop_;
     std::thread* p_loopThread_;