(ws) add subcommands: cobra subscribe, and cobra subscribe to statsd bridge

ws/ws_cobra_subscribe.cpp

@@ -0,0 +1,76 @@
+/*
+ *  ws_cobra_subscribe.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include <iostream>
+#include <sstream>
+#include <chrono>
+#include <thread>
+#include <atomic>
+#include "IXCobraConnection.h"
+
+namespace ix
+{
+    int ws_cobra_subscribe_main(const std::string& appkey,
+                                const std::string& endpoint,
+                                const std::string& rolename,
+                                const std::string& rolesecret,
+                                const std::string& channel,
+                                bool verbose)
+    {
+
+        ix::CobraConnection conn;
+        conn.configure(appkey, endpoint,
+                       rolename, rolesecret,
+                       ix::WebSocketPerMessageDeflateOptions(true));
+        conn.connect();
+
+        Json::FastWriter jsonWriter;
+
+        conn.setEventCallback(
+            [&conn, &channel, &jsonWriter]
+            (ix::CobraConnectionEventType eventType,
+             const std::string& errMsg,
+             const ix::WebSocketHttpHeaders& headers,
+             const std::string& subscriptionId)
+            {
+                if (eventType == ix::CobraConnection_EventType_Open)
+                {
+                    std::cout << "Subscriber: connected" << std::endl;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Authenticated)
+                {
+                    std::cout << "Subscriber authenticated" << std::endl;
+                    conn.subscribe(channel,
+                                   [&jsonWriter](const Json::Value& msg)
+                                   {
+                                       // std::cout << "Received message" << std::endl;
+                                       std::cout << jsonWriter.write(msg) << std::endl;
+                                   });
+                }
+                else if (eventType == ix::CobraConnection_EventType_Subscribed)
+                {
+                    std::cout << "Subscriber: subscribed to channel " << subscriptionId << std::endl;
+                }
+                else if (eventType == ix::CobraConnection_EventType_UnSubscribed)
+                {
+                    std::cout << "Subscriber: unsubscribed from channel " << subscriptionId << std::endl;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Error)
+                {
+                    std::cout << "Subscriber: error" << errMsg << std::endl;
+                }
+            }
+        );
+
+        while (true)
+        {
+            std::chrono::duration<double, std::milli> duration(10);
+            std::this_thread::sleep_for(duration);
+        }
+
+        return 0;
+    }
+}