First naive implementation of methods

ConsumerLocator.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-#IDE JÖNNEK IMPORTOK
+import datetime
 
 """
 Main Flask RESTful API
@@ -15,36 +15,70 @@ __version__text__ = "1"
 class ConsumerLocator:
 
     def __init__(self):
-        self.consumerList = ["KnownHost"]
-        self.currentConsumer = self.consumerList[0]
-        pass
+        self.consumerList = [{"Host": "KnownHost", "State": True, "LastOk": datetime.datetime.now()}]
+        self.currentConsumer = self.consumerList[0]["Host"]
 
     def learnConsumerList(self):
         """"
         Learns the list of consumers.
         """
-        pass
+        recievedConsumerList = communicator.getConsumerList()
+        for consumer in recievedConsumerList:
+            self.consumerList.append({"Host": consumer, "State": True, "LastOk": datetime.datetime.now()})
+        self.updateConsumerList()
+
+    def updateConsumerList(self):
+        """
+        Updates the consumer list based on their availability.
+        """
+        removeList = []
+        for consumer in self.consumerList:
+            if not communicator.ping(consumer["Host"]):
+                consumer["State"] = False
+                if datetime.datetime.now() - consumer["LastOk"] > datetime.timedelta(hours=1):
+                    removeList.append(consumer)
+            else:
+                consumer["LastOk"] = datetime.datetime.now()
+        for rem in removeList:
+            self.consumerList.remove(rem)
 
     def updateConsumer(self):
         """
-        Updates the current consumer.
-        :return:
+        Checks all the consumers in the list and updates the current consumer if necessary.
+        :return: the current consumer
         """
-        self.currentConsumer = self.consumerList[0]
+
+        self.updateConsumerList()
+
+        if not self.checkConsumer():
+
+            newCurrentConsumer = None
+
+            for consumer in self.consumerList:
+                if consumer["State"]:
+                    newCurrentConsumer = consumer
+                    break
+
+            self.currentConsumer = newCurrentConsumer
+
+        if self.currentConsumer is not None:
+            return self.currentConsumer["Host"]
+        else:
+            return None
 
     def getCurrentConsumer(self):
         """
         Returns the currently selected consumer.
         :return: the current consumer
         """
-        return self.currentConsumer
+        return self.currentConsumer["Host"]
 
     def checkConsumer(self):
         """
         Check the consumers health.
         :return: True if OK, False if fail
         """
-        if communicator.ping(self.currentConsumer):
+        if communicator.ping(self.currentConsumer["Host"]):
             return True
         else:
             return False