add broker class

Broker.py

@@ -0,0 +1,47 @@
+'''
+Created on 06.03.2016
+
+@author: wn
+'''
+
+
+import Queue
+
+class BrokerException(Exception): pass
+
+class BrokerDuplicateIdException(BrokerException): pass
+
+class BrokerNotSubscribedException(BrokerException): pass
+
+class BrokerOverflowException(BrokerException): pass
+
+
+class Broker(object):
+    def __init__(self):
+        self.outQueues = {}
+        self.inQueue = Queue.Queue
+        
+    def subscribe(self, name):
+        if self.outQueues.has_key(name):
+            raise BrokerDuplicateIdException()
+        self.outQueues[name] = Queue.Queue()
+    
+    def unsubscribe(self, name):
+        try:
+            del self.outQueues[name]
+        except KeyError:
+            raise BrokerNotSubscribedException
+    
+    def get(self, name):
+        try:
+            return self.outQueues[name].get()
+        except KeyError:
+            raise BrokerNotSubscribedException
+        
+    def put(self, msg):
+        try:
+            for q in self.outQueues.values():
+                q.put_nowait(msg)
+        except Queue.Full:
+            
+