sfa/rspecs/sfa_rspec_converter.py

   1 #!/usr/bin/python
   2
   3 from lxml import etree
   4 from StringIO import StringIO
   5 from sfa.util.xrn import *
   6 from sfa.rspecs.rspec import RSpec
   7 from sfa.rspecs.version_manager import VersionManager
   8
   9 class SfaRSpecConverter:
  10
  11     @staticmethod
  12     def to_pg_rspec(rspec, content_type = None):
  13         if not isinstance(rspec, RSpec):
  14             sfa_rspec = RSpec(rspec)
  15         else:
  16             sfa_rspec = rspec
  17
  18         if not content_type or content_type not in \
  19           ['ad', 'request', 'manifest']:
  20             content_type = sfa_rspec.version.content_type
  21
  22
  23         version_manager = VersionManager()
  24         pg_version = version_manager._get_version('protogeni', '2', 'request')
  25         pg_rspec = RSpec(version=pg_version)
  26
  27         # get networks
  28         networks = sfa_rspec.version.get_networks()
  29
  30         for network in networks:
  31             # get nodes
  32             sfa_node_elements = sfa_rspec.version.get_node_elements(network=network)
  33             for sfa_node_element in sfa_node_elements:
  34                 # create node element
  35                 node_attrs = {}
  36                 node_attrs['exclusive'] = 'false'
  37                 if 'component_manager_id' in sfa_node_element.attrib:
  38                     node_attrs['component_manager_id'] = sfa_node_element.attrib['component_manager_id']
  39                 else:
  40                     node_attrs['component_manager_id'] = hrn_to_urn(network, 'authority+cm')
  41
  42                 if 'component_id' in sfa_node_element.attrib:
  43                     node_attrs['compoenent_id'] = sfa_node_element.attrib['component_id']
  44
  45                 if sfa_node_element.find('hostname') != None:
  46                     hostname = sfa_node_element.find('hostname').text
  47                     node_attrs['component_name'] = hostname
  48                     node_attrs['client_id'] = hostname
  49                 node_element = pg_rspec.xml.add_element('node', node_attrs)
  50
  51                 if content_type == 'request':
  52                     sliver_element = sfa_node_element.find('sliver')
  53                     sliver_type_elements = sfa_node_element.xpath('./sliver_type', namespaces=sfa_rspec.namespaces)
  54                     available_sliver_types = [element.attrib['name'] for element in sliver_type_elements]
  55                     valid_sliver_types = ['emulab-openvz', 'raw-pc']
  56
  57                     # determine sliver type
  58                     requested_sliver_type = 'emulab-openvz'
  59                     for available_sliver_type in available_sliver_types:
  60                         if available_sliver_type in valid_sliver_types:
  61                             requested_sliver_type = available_sliver_type
  62
  63                     if sliver_element != None:
  64                         pg_rspec.xml.add_element('sliver_type', {'name': requested_sliver_type}, parent=node_element)
  65                 else:
  66                     # create node_type element
  67                     for hw_type in ['plab-pc', 'pc']:
  68                         hdware_type_element = pg_rspec.xml.add_element('hardware_type', {'name': hw_type}, parent=node_element)
  69                     # create available element
  70                     pg_rspec.xml.add_element('available', {'now': 'true'}, parent=node_element)
  71                     # create locaiton element
  72                     # We don't actually associate nodes with a country.
  73                     # Set country to "unknown" until we figure out how to make
  74                     # sure this value is always accurate.
  75                     location = sfa_node_element.find('location')
  76                     if location != None:
  77                         location_attrs = {}
  78                         location_attrs['country'] =  location.get('country', 'unknown')
  79                         location_attrs['latitude'] = location.get('latitude', 'None')
  80                         location_attrs['longitude'] = location.get('longitude', 'None')
  81                         pg_rspec.xml.add_element('location', location_attrs, parent=node_element)
  82
  83         return pg_rspec.toxml()
  84
  85 if __name__ == '__main__':
  86     import sys
  87     if len(sys.argv) > 1:
  88         print SfaRSpecConverter.to_pg_rspec(sys.argv[1])