eliminated tornado and pymongo, more package refactoring, test passes

qsim/transforms/technical.py

@@ -0,0 +1,38 @@
+import qsim.transforms.base as base
+
+class MovingAverage(base.Transform):
+    
+    def __init__(self, feed, props, result_address): 
+        base.Transform.__init__(self, feed, props, result_address)
+        self.events = []
+        
+        self.window = datetime.timedelta(days           = self.config.get_integer('days'), 
+                                        seconds         = self.config.get_integer('seconds'), 
+                                        microseconds    = self.config.get_integer('microseconds'), 
+                                        milliseconds    = self.config.get_integer('milliseconds'),
+                                        minutes         = self.config.get_integer('minutes'),
+                                        hours           = self.config.get_integer('hours'),
+                                        weeks           = self.config.get_integer('weeks'))
+    
+        
+  
+        
+    def transform(self, event):
+        self.events.append(event)
+        
+        #filter the event list to the window length.
+        self.events = [x for x in self.events if (qutil.parse_date(x['dt']) - qutil.parse_date(event['dt'])) <= self.window]
+        
+        if(len(self.events) == 0):
+            return 0.0
+            
+        total = 0.0
+        for event in self.events:
+            total += event['price']
+        
+        self.average = total/len(self.events)
+        
+        self.state['value'] = self.average
+        
+        return self.state
+