sfa/rspecs/versions/nitosv1.py

   1 from copy import deepcopy
   2 from lxml import etree
   3
   4 from sfa.util.sfalogging import logger
   5 from sfa.util.xrn import hrn_to_urn, urn_to_hrn
   6 from sfa.rspecs.version import RSpecVersion
   7 from sfa.rspecs.elements.element import Element
   8 from sfa.rspecs.elements.versions.pgv2Link import PGv2Link
   9 from sfa.rspecs.elements.versions.nitosv1Node import NITOSv1Node
  10 from sfa.rspecs.elements.versions.nitosv1Sliver import NITOSv1Sliver
  11 from sfa.rspecs.elements.versions.nitosv1Lease import NITOSv1Lease
  12 from sfa.rspecs.elements.versions.nitosv1Channel import NITOSv1Channel
  13
  14 class NITOSv1(RSpecVersion):
  15     enabled = True
  16     type = 'NITOS'
  17     content_type = '*'
  18     version = '1'
  19     schema = None
  20     namespace = None
  21     extensions = {}
  22     namespaces = None
  23     template = '<RSpec type="%s"></RSpec>' % type
  24
  25     # Network
  26     def get_networks(self):
  27         network_elems = self.xml.xpath('//network')
  28         networks = [network_elem.get_instance(fields=['name', 'slice']) for \
  29                     network_elem in network_elems]
  30         return networks
  31
  32
  33     def add_network(self, network):
  34         network_tags = self.xml.xpath('//network[@name="%s"]' % network)
  35         if not network_tags:
  36             network_tag = self.xml.add_element('network', name=network)
  37         else:
  38             network_tag = network_tags[0]
  39         return network_tag
  40
  41
  42     # Nodes
  43
  44     def get_nodes(self, filter=None):
  45         return NITOSv1Node.get_nodes(self.xml, filter)
  46
  47     def get_nodes_with_slivers(self):
  48         return NITOSv1Node.get_nodes_with_slivers(self.xml)
  49
  50     def add_nodes(self, nodes, network = None, no_dupes=False, rspec_content_type=None):
  51         NITOSv1Node.add_nodes(self.xml, nodes, rspec_content_type)
  52
  53     def merge_node(self, source_node_tag, network, no_dupes=False):
  54         if no_dupes and self.get_node_element(node['hostname']):
  55             # node already exists
  56             return
  57
  58         network_tag = self.add_network(network)
  59         network_tag.append(deepcopy(source_node_tag))
  60
  61     # Slivers
  62
  63     def add_slivers(self, hostnames, attributes=None, sliver_urn=None, append=False):
  64         if attributes is None: attributes=[]
  65         # add slice name to network tag
  66         network_tags = self.xml.xpath('//network')
  67         if network_tags:
  68             network_tag = network_tags[0]
  69             network_tag.set('slice', urn_to_hrn(sliver_urn)[0])
  70
  71         # add slivers
  72         sliver = {'name':sliver_urn,
  73                   'pl_tags': attributes}
  74         for hostname in hostnames:
  75             if sliver_urn:
  76                 sliver['name'] = sliver_urn
  77             node_elems = self.get_nodes({'component_id': '*%s*' % hostname})
  78             if not node_elems:
  79                 continue
  80             node_elem = node_elems[0]
  81             NITOSv1Sliver.add_slivers(node_elem.element, sliver)
  82
  83         # remove all nodes without slivers
  84         if not append:
  85             for node_elem in self.get_nodes():
  86                 if not node_elem['slivers']:
  87                     parent = node_elem.element.getparent()
  88                     parent.remove(node_elem.element)
  89
  90
  91     def remove_slivers(self, slivers, network=None, no_dupes=False):
  92         NITOSv1Node.remove_slivers(self.xml, slivers)
  93
  94     def get_slice_attributes(self, network=None):
  95         attributes = []
  96         nodes_with_slivers = self.get_nodes_with_slivers()
  97         for default_attribute in self.get_default_sliver_attributes(network):
  98             attribute = default_attribute.copy()
  99             attribute['node_id'] = None
 100             attributes.append(attribute)
 101         for node in nodes_with_slivers:
 102             nodename=node['component_name']
 103             sliver_attributes = self.get_sliver_attributes(nodename, network)
 104             for sliver_attribute in sliver_attributes:
 105                 sliver_attribute['node_id'] = nodename
 106                 attributes.append(sliver_attribute)
 107         return attributes
 108
 109
 110     def add_sliver_attribute(self, component_id, name, value, network=None):
 111         nodes = self.get_nodes({'component_id': '*%s*' % component_id})
 112         if nodes is not None and isinstance(nodes, list) and len(nodes) > 0:
 113             node = nodes[0]
 114             slivers = NITOSv1Sliver.get_slivers(node)
 115             if slivers:
 116                 sliver = slivers[0]
 117                 NITOSv1Sliver.add_sliver_attribute(sliver, name, value)
 118         else:
 119             # should this be an assert / raise an exception?
 120             logger.error("WARNING: failed to find component_id %s" % component_id)
 121
 122     def get_sliver_attributes(self, component_id, network=None):
 123         nodes = self.get_nodes({'component_id': '*%s*' % component_id})
 124         attribs = []
 125         if nodes is not None and isinstance(nodes, list) and len(nodes) > 0:
 126             node = nodes[0]
 127             slivers = NITOSv1Sliver.get_slivers(node.element)
 128             if slivers is not None and isinstance(slivers, list) and len(slivers) > 0:
 129                 sliver = slivers[0]
 130                 attribs = NITOSv1Sliver.get_sliver_attributes(sliver.element)
 131         return attribs
 132
 133     def remove_sliver_attribute(self, component_id, name, value, network=None):
 134         attribs = self.get_sliver_attributes(component_id)
 135         for attrib in attribs:
 136             if attrib['name'] == name and attrib['value'] == value:
 137                 #attrib.element.delete()
 138                 parent = attrib.element.getparent()
 139                 parent.remove(attrib.element)
 140
 141     def add_default_sliver_attribute(self, name, value, network=None):
 142         if network:
 143             defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
 144         else:
 145             defaults = self.xml.xpath("//sliver_defaults")
 146         if not defaults:
 147             if network:
 148                 network_tag = self.xml.xpath("//network[@name='%s']" % network)
 149             else:
 150                 network_tag = self.xml.xpath("//network")
 151             if isinstance(network_tag, list):
 152                 network_tag = network_tag[0]
 153             defaults = network_tag.add_element('sliver_defaults')
 154         elif isinstance(defaults, list):
 155             defaults = defaults[0]
 156         NITOSv1Sliver.add_sliver_attribute(defaults, name, value)
 157
 158     def get_default_sliver_attributes(self, network=None):
 159         if network:
 160             defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
 161         else:
 162             defaults = self.xml.xpath("//sliver_defaults")
 163         if not defaults: return []
 164         return NITOSv1Sliver.get_sliver_attributes(defaults[0])
 165
 166     def remove_default_sliver_attribute(self, name, value, network=None):
 167         attribs = self.get_default_sliver_attributes(network)
 168         for attrib in attribs:
 169             if attrib['name'] == name and attrib['value'] == value:
 170                 #attrib.element.delete()
 171                 parent = attrib.element.getparent()
 172                 parent.remove(attrib.element)
 173
 174     # Links
 175
 176     def get_links(self, network=None):
 177         return []
 178
 179     def get_link_requests(self):
 180         return []
 181
 182     def add_links(self, links):
 183         pass
 184     def add_link_requests(self, links):
 185         pass
 186
 187     # utility
 188
 189     def merge(self, in_rspec):
 190         """
 191         Merge contents for specified rspec with current rspec
 192         """
 193
 194         if not in_rspec:
 195             return
 196
 197         from sfa.rspecs.rspec import RSpec
 198         if isinstance(in_rspec, RSpec):
 199             rspec = in_rspec
 200         else:
 201             rspec = RSpec(in_rspec)
 202         if rspec.version.type.lower() == 'protogeni':
 203             from sfa.rspecs.rspec_converter import RSpecConverter
 204             in_rspec = RSpecConverter.to_sfa_rspec(rspec.toxml())
 205             rspec = RSpec(in_rspec)
 206
 207         # just copy over all networks
 208         current_networks = self.get_networks()
 209         networks = rspec.version.get_networks()
 210         for network in networks:
 211             current_network = network.get('name')
 212             if current_network and current_network not in current_networks:
 213                 self.xml.append(network.element)
 214                 current_networks.append(current_network)
 215
 216     # Leases
 217
 218     def get_leases(self, filter=None):
 219         return NITOSv1Lease.get_leases(self.xml, filter)
 220
 221     def add_leases(self, leases_channels, network = None, no_dupes=False):
 222         leases, channels = leases_channels
 223         NITOSv1Lease.add_leases(self.xml, leases, channels)
 224
 225     # Spectrum
 226
 227     def get_channels(self, filter=None):
 228         return NITOSv1Channel.get_channels(self.xml, filter)
 229
 230     def add_channels(self, channels, network = None, no_dupes=False):
 231         NITOSv1Channel.add_channels(self.xml, channels)
 232
 233
 234
 235 if __name__ == '__main__':
 236     from sfa.rspecs.rspec import RSpec
 237     from sfa.rspecs.rspec_elements import *
 238     r = RSpec('/tmp/resources.rspec')
 239     r.load_rspec_elements(SFAv1.elements)
 240     print r.get(RSpecElements.NODE)