Added subscription service capability.

SubscriptionManager.cpp

@@ -0,0 +1,56 @@
+#include "SubscriptionManager.h"
+#include "Log.h"
+
+namespace core {
+
+   SubscriptionManager::SubscriptionManager() {}
+
+   int SubscriptionManager::removeSessionSubscriptions(TCPSession &session) {
+      int count = 0;
+      for(auto subscription = subscriptions.begin(); subscription < subscriptions.end(); ++subscription) {
+         count += (*subscription)->unsubscribe(session);
+      }
+      coreutils::Log(coreutils::LOG_DEBUG_2) << "Removed session from " << count << " subscriptions.";
+      return count;
+   }
+
+   int SubscriptionManager::processCommand(coreutils::ZString &request, TCPSession &session) {
+
+      if(request[0].equals("publish")) {
+	      subscriptions.push_back(new Subscription(request[1].str(), session));
+	      return 1;
+      } else if(request[0].equals("catalog")) {
+      	session.out << ":catalog:";
+	      for(auto subscription = subscriptions.begin(); subscription < subscriptions.end(); ++subscription) {
+     	      session.out << (*subscription)->id << "|";
+            (*subscription)->processCommand(request, session);
+     	      session.out << (";");
+         }
+ 	      session.out << std::endl;
+      	return 1;
+      }
+
+	   for(auto subscription = subscriptions.begin(); subscription < subscriptions.end(); ++subscription) {
+	      if(request[1].equals((*subscription)->id)) {
+            if(request[0].equals("unpublish")) {
+	            subscriptions.erase(subscription);
+            } else if(request[0].equals("subscribe")) {
+   	         (*subscription)->subscribe(session);
+            } else if(request[0].equals("unsubscribe")) {
+	            (*subscription)->unsubscribe(session);
+            } else if(request[0].equals("event")) {
+               if((*subscription)->owner == &session) {
+                  std::stringstream out;
+                  (*subscription)->process(request, out);
+	               (*subscription)->event(out);
+               }
+               else
+                 return 0;
+            }
+            return 1;
+         }
+      }
+      return 0;
+   }
+
+}