create file if not exists

RequestLogger.py

@@ -150,7 +150,7 @@ class FSCLogger:
                 # validate fields
                 if conf['logfile'] == "":
                     invalid_fields.append('logfile')
-                
+
 
                 if len(invalid_fields) > 0:
                     # return an error as at least one field seems invalid
@@ -173,7 +173,7 @@ class FSCLogger:
                     self.return_and_exit(Response(id=request.id, error="notification is missing its linked object."))
 
                 ## Log to file
-                f = open(self.logfile, "a")
+                f = open(self.logfile, "a+")
                 f.write("Now the file has more content!")
                 f.close()
                 self.log("getting data %s" % notification)