reinstatement of code to output trace (if it is yes on the topology)

dream/simulation/JSONInputs/Topology01.json

@@ -3,7 +3,7 @@
     "_class": "Dream.Configuration",
     "numberOfReplications": "1",
     "maxSimTime": "1440",
-    "trace": "No",
+    "trace": "Yes",
     "confidenceLevel": "0.95"
   },
   "elementList": [

dream/simulation/LineGenerationJSON.py

@@ -345,7 +345,15 @@ def main(argv=[], input_data=None):
             
         #carry on the post processing operations for every model resource in the topology       
         for model_resource in G.RepairmanList:
-            model_resource.postProcessing(G.maxSimTime)          
+            model_resource.postProcessing(G.maxSimTime)       
+            
+        #output trace to excel      
+        if(G.trace=="Yes"):
+            G.traceFile.save('trace'+str(i+1)+'.xls')
+            G.traceIndex=0    #index that shows in what row we are
+            G.sheetIndex=1    #index that shows in what sheet we are
+            G.traceFile = xlwt.Workbook()     #create excel file
+            G.traceSheet = G.traceFile.add_sheet('sheet '+str(G.sheetIndex), cell_overwrite_ok=True)  #create excel sheet   
     
     G.outputJSONFile=open('outputJSON.json', mode='w')
     G.outputJSON['_class'] = 'Dream.Simulation';

dream/simulation/Machine.py

@@ -191,8 +191,9 @@ class Machine(CoreObject):
     def checkIfMachineIsUp(self):
         return self.Up
     
+    #calculates the processing time
     def calculateProcessingTime(self):
-        return self.rng.generateNumber()
+        return self.rng.generateNumber()    #this is if we have a default processing time for all the entities
     
     #checks if the Machine can accept an entity       
     #it checks also who called it and returns TRUE only to the predecessor that will give the entity.