Source Code for Module ZenRelations.utils

 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  from Exceptions import ZenImportError 
14   
15 -def importClass(classpath, baseModule=None): 
16      """lookup a class by its path use baseModule path if passed""" 
17      if baseModule: classpath = ".".join((baseModule, classpath)) 
18      try: 
19          mod = __import__(classpath) 
20      except ImportError: 
21          try: 
22              mod = __import__(".".join(classpath.split(".")[:-1])) 
23          except: 
24              raise ZenImportError("failed importing class %s" % classpath) 
25      for comp in classpath.split(".")[1:]: 
26          mod = getattr(mod, comp) 
27      classdef = getattr(mod, comp, None) 
28      if classdef: mod = classdef 
29      return mod 
30   
31   
32 -def importClasses(basemodule=None, skipnames=()): 
33      """ 
34      import all classes listed in baseModule in the variable productNames 
35      and return them in a list.  Assume that classes are defined in a file 
36      with the same name as the class. 
37      """ 
38      classList = [] 
39      mod = __import__(basemodule) 
40      for comp in basemodule.split(".")[1:]: 
41          mod = getattr(mod, comp) 
42      for prodname in mod.productNames: 
43          if prodname in skipnames: continue 
44          classdef = importClass(prodname, basemodule)  
45          classList.append(classdef) 
46      return classList 
47