new pros-process plugin to prepare Operation Utilization Graph data

dream/plugins/JSOperatorUtilization.py

+from dream.plugins import plugin
+from copy import copy
+
+class JSOperatorUtilization(plugin.OutputPreparationPlugin):
+  """ Output the station utilization metrics in a format compatible with 
+  """
+  # XXX hardcoded values
+  JS_OPERATOR_CLASS_SET = set(["Dream.Operator"])
+  def postprocess(self, data):
+    result = data['result']['result_list'][-1]
+
+    ticks = []
+    working_data = []
+    waiting_data = []
+    failure_data = []
+    blockage_data = []
+    off_shift_data = []
+
+    options = {
+      "xaxis": {
+        "minTickSize": 1,
+        "ticks": ticks
+      },
+      "yaxis": {
+        "max": 100
+      },
+      "series": {
+        "bars": {
+          "show": True,
+          "barWidth": 0.8,
+          "align": "center"
+        },
+        "stack": True
+      }
+    }
+
+    series = [{
+      "label": "Working",
+      "data": working_data
+    }, {
+      "label": "Waiting",
+      "data": waiting_data
+    }, {
+      "label": "off_shift",
+      "data": off_shift_data
+    }];
+
+    out = result[self.configuration_dict['output_id']] = {
+      "series": series,
+      "options": options
+    }
+
+    i = 0
+    for obj in result['elementList']:
+      if obj.get('_class') in self.JS_OPERATOR_CLASS_SET:
+        objResults=copy(obj['results'])
+        if objResults['working_ratio']:
+          working_data.append((i, objResults['working_ratio'][0]))
+        if objResults['waiting_ratio']:
+          waiting_data.append((i, objResults['waiting_ratio'][0]))
+        if objResults['off_shift_ratio']:
+          off_shift_data.append((i, objResults['off_shift_ratio'][0]))
+
+        ticks.append((i, obj.get('name', self.getNameFromId(data, obj['id']))))
+        i += 1
+  
+    return data