geni/aggregate.py

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