Source Code for Module Products.ZenModel.RpnGraphPoint

 1  ############################################################################## 
 2  #  
 3  # Copyright (C) Zenoss, Inc. 2011, all rights reserved. 
 4  #  
 5  # This content is made available according to terms specified in 
 6  # License.zenoss under the directory where your Zenoss product is installed. 
 7  #  
 8  ############################################################################## 
 9   
10   
11  __doc__="""RpnGraphPoint 
12   
13  Base class for graph points with RPNs. Never directly instantiated. 
14  """ 
15   
16  from Globals import InitializeClass 
17   
18  from Products.ZenModel.GraphPoint import GraphPoint 
19  from Products.ZenRRD.utils import rpnStack 
20   
21   
22 -class RpnGraphPoint(GraphPoint): 
23      rpn = '' 
24   
25      _properties = GraphPoint._properties + ( 
26          {'id':'rpn', 'type':'string', 'mode':'w'}, 
27          ) 
28       
29 -    def getDescription(self): 
30          return self.rpn 
31   
32   
33 -    def getRpn(self, multiid=-1, prefix=''): 
34          parts = self.rpn.split(',') 
35          for i, var in enumerate(parts): 
36              try: 
37                  unused = float(var) 
38                  continue 
39              except ValueError: 
40                  pass 
41   
42              if var in rpnStack.opcodes: 
43                  continue 
44                   
45              parts[i] = self.getDsName(var, multiid, prefix) 
46   
47          return ','.join(parts) 
48   
49   
50  InitializeClass(RpnGraphPoint) 
51