geni/registry.py

   1 ##
   2 # Registry is a GeniServer that implements the Registry interface
   3
   4 import tempfile
   5 import os
   6 import time
   7 import sys
   8
   9 from geni.util.geniserver import GeniServer
  10 from geni.util.geniclient import GeniClient
  11 from geni.util.genitable import GeniTable
  12 from geni.util.excep import *
  13 from geni.util.config import *
  14 from geni.util.storage import *
  15
  16 ##
  17 # Registry is a GeniServer that serves registry and slice operations at PLC.
  18
  19 class Registry(GeniServer):
  20     ##
  21     # Create a new registry object.
  22     #
  23     # @param ip the ip address to listen on
  24     # @param port the port to listen on
  25     # @param key_file private key filename of registry
  26     # @param cert_file certificate filename containing public key (could be a GID file)
  27
  28     def __init__(self, ip, port, key_file, cert_file, config = '/usr/share/geniwrapper/geni/util/geni_config'):
  29         GeniServer.__init__(self, ip, port, key_file, cert_file)
  30         self.server.interface = 'registry'
  31
  32
  33 ##
  34 # Registries is a dictionary of geniclient registry connections keyed on the registry
  35 # hrn
  36
  37 class Registries(dict):
  38
  39     def __init__(self, api):
  40         dict.__init__(self, {})
  41         self.api = api
  42         registries_file = self.api.server_basedir + os.sep + 'registries.xml'
  43         connection_dict = {'hrn': '', 'addr': '', 'port': ''}
  44         self.registry_info = XmlStorage(registries_file, {'registries': {'registry': [connection_dict]}})
  45         self.registry_info.load()
  46         self.connectRegistries()
  47
  48     def connectRegistries(self):
  49         """
  50         Get connection details for the trusted peer registries from file and
  51         create an GeniClient connection to each.
  52         """
  53         required_fields = ['hrn', 'addr', 'port']
  54         registries = self.registry_info['registries']['registry']
  55         if isinstance(registries, dict):
  56             registries = [registries]
  57         if isinstance(registries, list):
  58             for registry in registries:
  59                 # create xmlrpc connection using GeniClient
  60                 if not set(required_fields).issubset(registry.keys()):
  61                     continue
  62                 hrn, address, port = registry['hrn'], registry['addr'], registry['port']
  63                 if not hrn or not address or not port:
  64                     continue
  65                 url = 'http://%(address)s:%(port)s' % locals()
  66                 self[hrn] = GeniClient(url, self.api.key_file, self.api.cert_file)
  67
  68         # set up a connection to the local registry
  69         # connect to registry using GeniClient
  70         address = self.api.config.GENI_REGISTRY_HOSTNAME
  71         port = self.api.config.GENI_REGISTRY_PORT
  72         url = 'http://%(address)s:%(port)s' % locals()
  73         self[self.api.hrn] = GeniClient(url, self.api.key_file, self.api.cert_file)
  74