Source Code for Module ZenModel.DefGraphPoint

 1  ########################################################################### 
 2  # 
 3  # This program is part of Zenoss Core, an open source monitoring platform. 
 4  # Copyright (C) 2007, Zenoss Inc. 
 5  # 
 6  # This program is free software; you can redistribute it and/or modify it 
 7  # under the terms of the GNU General Public License version 2 as published by 
 8  # the Free Software Foundation. 
 9  # 
10  # For complete information please visit: http://www.zenoss.com/oss/ 
11  # 
12  ########################################################################### 
13   
14  __doc__="""DefGraphPoint 
15   
16  Handles GraphPoints that define an rrd DEF 
17  """ 
18   
19  from GraphPoint import GraphPoint 
20  from Globals import InitializeClass 
21   
22   
23 -def manage_addDefGraphPoint(context, id, REQUEST = None): 
24      ''' This is here so than zope will let us copy/paste/rename 
25      graphpoints. 
26      ''' 
27      gp = DefGraphPoint(id) 
28      context._setObject(gp.id, gp) 
29      if REQUEST: 
30          return context.callZenScreen(REQUEST) 
31   
32   
33 -class DefGraphPoint(GraphPoint): 
34   
35      meta_type = 'DefGraphPoint' 
36       
37      rrdFile = '' 
38      dsName = 'ds0' 
39      step = '' 
40      start = '' 
41      end = '' 
42      cFunc = 'AVERAGE' 
43      rFunc = '' 
44       
45      _properties = GraphPoint._properties + ( 
46          {'id':'rrdFile', 'type':'string', 'mode':'w'}, 
47          {'id':'dsName', 'type':'string', 'mode':'w'}, 
48          {'id':'step', 'type':'string', 'mode':'w'}, 
49          {'id':'start', 'type':'string', 'mode':'w'}, 
50          {'id':'end', 'type':'string', 'mode':'w'}, 
51          {'id':'cFunc', 'type':'string', 'mode':'w'}, 
52          {'id':'rFunc', 'type':'string', 'mode':'w'},         
53          ) 
54       
55   
56 -    def getDescription(self): 
57          return '%s %s' % (self.rrdFile, self.dsName) 
58   
59   
60 -    def getType(self): 
61          return 'DEF' 
62   
63   
64 -    def getGraphCmds(self, cmds, context, rrdDir, addSummary, idx,  
65                              multiid=-1, prefix=''): 
66          ''' Build the graphing commands for this graphpoint 
67          ''' 
68          if not (self.rrdFile and self.dsName and self.cFunc): 
69              return cmds 
70           
71          rrdFile = self.talesEval(self.rrdFile, context, rrdDir=rrdDir)     
72               
73          dest = self.getDsName(self.id, multiid, prefix) 
74          gopt = 'DEF:%s=%s:%s:%s' % ( 
75                      dest, 
76                      rrdFile, 
77                      self.dsName, 
78                      self.cFunc) 
79          if self.step: 
80              gopt += ':step=%s' % self.step 
81          if self.start: 
82              start = self.talesEval(self.start, context) 
83              gopt += ':start=%s' % start.replace(':', '\:') 
84          if self.end: 
85              end = self.talesEval(self.end, context) 
86              gopt += ':end=%s' % end.replace(':', '\:') 
87          if self.rFunc: 
88              gopt += ':reduce=%s' % self.rFunc         
89          return cmds + [gopt] 
90   
91   
92  InitializeClass(DefGraphPoint) 
93