sfa/openstack/euca_shell.py

   1 try:
   2     import boto
   3     from boto.ec2.regioninfo import RegionInfo
   4     from boto.exception import EC2ResponseError
   5     has_boto=True
   6 except:
   7     has_boto=False
   8
   9 from sfa.util.sfalogging import logger
  10 from sfa.openstack.nova_shell import NovaShell
  11 from sfa.util.config import Config
  12
  13 class EucaShell:
  14     """
  15     A xmlrpc connection to the euca api.
  16     """
  17
  18     def __init__(self, config):
  19         self.config = config
  20
  21     def get_euca_connection(self):
  22         if not has_boto:
  23             logger.info('Unable to access EC2 API - boto library not found.')
  24             return None
  25         nova = NovaShell(self.config)
  26         admin_user = nova.auth_manager.get_user(self.config.SFA_NOVA_USER)
  27         access_key = admin_user.access
  28         secret_key = admin_user.secret
  29         url = self.config.SFA_NOVA_API_URL
  30         host = None
  31         port = None
  32         path = "/"
  33         use_ssl = False
  34         # Split the url into parts
  35         if url.find('https://') >= 0:
  36             use_ssl  = True
  37             url = url.replace('https://', '')
  38         elif url.find('http://') >= 0:
  39             use_ssl  = False
  40             url = url.replace('http://', '')
  41         parts = url.split(':')
  42         host = parts[0]
  43         if len(parts) > 1:
  44             parts = parts[1].split('/')
  45             port = int(parts[0])
  46             parts = parts[1:]
  47             path = '/'.join(parts)
  48
  49         return boto.connect_ec2(aws_access_key_id=access_key,
  50                                 aws_secret_access_key=secret_key,
  51                                 is_secure=use_ssl,
  52                                 region=RegionInfo(None, 'eucalyptus', host),
  53                                 host=host,
  54                                 port=port,
  55                                 path=path)
  56
  57     def __getattr__(self, name):
  58         def func(*args, **kwds):
  59             conn = self.get_euca_connection()
  60             return getattr(conn, name)(*args, **kwds)
  61         return func