Package Products :: Package ZenUtils :: Module ZenPackDaemons |
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# Source Code for Module Products.ZenUtils.ZenPackDaemons

     1  ###########################################################################
     2  #
     3  # This program is part of Zenoss Core, an open source monitoring platform.
     4  # Copyright (C) 2008, 2009 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__ = """zenpackdaemons
    15  Manage ZenPack-provided daemons
    16  """
    17
    18  import os
    19
    20  import Globals
    21  from Products.ZenUtils.PkgResources import pkg_resources
    22
    23  from Products.ZenUtils.ZenScriptBase import ZenScriptBase
    24  from Products.ZenUtils.ZenPackCmd import ZENPACK_ENTRY_POINT
    25  from Products.ZenModel.ZenPackLoader import ZPLDaemons
    26  from Products.ZenUtils.Utils import zenPath
    27
    28
    29 -class ZenPackDaemons(ZenScriptBase):
    30      """
    31      Utilities for handling ZenPack-provided daemons
    32      """
    33
    34 -    def nameZenPackDaemons(self, zenPackId=None):
    35          """
    36          Return a list of the names of the daemons provided by the given ZenPack.
    37          If no ZenPack is specified then list all daemons provided by all ZenPacks.
    38          """
    39          dList = []
    40          zpl = ZPLDaemons()
    41          # Get daemons from egg-based ZenPacks
    42          for entry in pkg_resources.iter_entry_points(ZENPACK_ENTRY_POINT):
    43              try:
    44                  module = entry.load()
    45                  dList += zpl.list(os.path.dirname(module.__file__), None)
    46              except Exception, ex:
    47                  summary = "The ZenPack %s cannot be imported -- skipping." % entry.name
    48                  self.log.exception(summary)
    49
    50          # Get daemons from non-egg ZenPacks
    51          prodDir = zenPath('Products')
    52          for item in os.listdir(prodDir):
    53              if not item.startswith('.'):
    54                  dList += zpl.list(os.path.join(prodDir, item), None)
    55          return dList
    56
    57
    58 -    def run(self):
    59          """
    60          Execute the user's request.
    61          """
    62
    63          if self.options.list:
    64              dList = self.nameZenPackDaemons()
    65              if dList:
    66                  print '\n'.join(dList)
    67          else:
    68              self.parser.print_help()
    69
    70
    71 -    def buildOptions(self):
    72          self.parser.add_option('--list',
    73                                 dest='list',
    74                                 default=False,
    75                                 action='store_true',
    76                                 help='List the names of ZenPack-supplied daemons'
    77                                 )
    78          ZenScriptBase.buildOptions(self)
    79
    80
    81  if __name__ == '__main__':
    82      zp = ZenPackDaemons()
    83      zp.run()
    84