+ namespaces = dict(list(extensions.items()) + [('default', namespace)])
+
+ # Networks
+ def get_networks(self):
+ network_names = set()
+ nodes = self.xml.xpath('//default:node[@component_manager_id] | //node[@component_manager_id]',
+ namespaces=self.namespaces)
+ for node in nodes:
+ if 'component_manager_id' in node.attrib:
+ network_urn = node.get('component_manager_id')
+ if network_urn.startswith("urn:"):
+ network_hrn = Xrn(network_urn).get_hrn()
+ else:
+ # some component_manager_ids are hrns instead of urns??
+ network_hrn = network_urn
+ network_names.add(network_hrn)
+ network_names = list(network_names)
+ networks = [{"name": x} for x in network_names]
+ return networks
+
+ # Nodes
+
+ def get_nodes(self, filter=None):
+ return PGv2Node.get_nodes(self.xml, filter)
+
+ def get_nodes_with_slivers(self):
+ return PGv2Node.get_nodes_with_slivers(self.xml)
+
+ def add_nodes(self, nodes, check_for_dupes=False, rspec_content_type=None):
+ return PGv2Node.add_nodes(self.xml, nodes, rspec_content_type)
+
+ def merge_node(self, source_node_tag):
+ # this is untested
+ self.xml.root.append(deepcopy(source_node_tag))
+
+ # Slivers
+
+ def get_sliver_attributes(self, component_id, network=None):
+ nodes = self.get_nodes({'component_id': '*%s*' %component_id})
+ try:
+ node = nodes[0]
+ sliver = node.xpath('./default:sliver_type', namespaces=self.namespaces)
+ if sliver is not None and isinstance(sliver, list) and len(sliver) > 0:
+ sliver = sliver[0]
+ return self.attributes_list(sliver)
+ else:
+ return []
+ except:
+ return []
+
+ def get_slice_attributes(self, network=None):
+ slice_attributes = []
+ nodes_with_slivers = self.get_nodes_with_slivers()
+ # TODO: default sliver attributes in the PG rspec?
+ default_ns_prefix = self.namespaces['default']
+ for node in nodes_with_slivers:
+ sliver_attributes = self.get_sliver_attributes(node['component_id'], network)
+ for sliver_attribute in sliver_attributes:
+ name=str(sliver_attribute[0])
+ text =str(sliver_attribute[1])
+ attribs = sliver_attribute[2]
+ # we currently only suppor the <initscript> and <flack> attributes
+ if 'info' in name:
+ attribute = {'name': 'flack_info', 'value': str(attribs), 'node_id': node}
+ slice_attributes.append(attribute)
+ elif 'initscript' in name:
+ if attribs is not None and 'name' in attribs:
+ value = attribs['name']
+ else:
+ value = text
+ attribute = {'name': 'initscript', 'value': value, 'node_id': node}
+ slice_attributes.append(attribute)
+
+ return slice_attributes
+
+ def attributes_list(self, elem):
+ opts = []
+ if elem is not None:
+ for e in elem:
+ opts.append((e.tag, str(e.text).strip(), e.attrib))
+ return opts
+
+ def get_default_sliver_attributes(self, network=None):
+ return []
+
+ def add_default_sliver_attribute(self, name, value, network=None):
+ pass
+
+ def add_slivers(self, hostnames, attributes=None, sliver_urn=None, append=False):
+ if attributes is None: attributes=[]
+ # all nodes hould already be present in the rspec. Remove all
+ # nodes that done have slivers
+ for hostname in hostnames:
+ node_elems = self.get_nodes({'component_id': '*%s*' % hostname})
+ if not node_elems:
+ continue
+ node_elem = node_elems[0]
+
+ # determine sliver types for this node
+ valid_sliver_types = ['emulab-openvz', 'raw-pc', 'plab-vserver', 'plab-vnode']
+ requested_sliver_type = None
+ for sliver_type in node_elem.get('slivers', []):
+ if sliver_type.get('type') in valid_sliver_types:
+ requested_sliver_type = sliver_type['type']
+
+ if not requested_sliver_type:
+ continue
+ sliver = {'type': requested_sliver_type,
+ 'pl_tags': attributes}
+
+ # remove available element
+ for available_elem in node_elem.xpath('./default:available | ./available'):
+ node_elem.remove(available_elem)
+
+ # remove interface elements
+ for interface_elem in node_elem.xpath('./default:interface | ./interface'):
+ node_elem.remove(interface_elem)
+
+ # remove existing sliver_type elements
+ for sliver_type in node_elem.get('slivers', []):
+ node_elem.element.remove(sliver_type.element)
+
+ # set the client id
+ node_elem.element.set('client_id', hostname)
+ if sliver_urn:
+ pass
+ # TODO
+ # set the sliver id
+ #slice_id = sliver_info.get('slice_id', -1)
+ #node_id = sliver_info.get('node_id', -1)
+ #sliver_id = Xrn(xrn=sliver_urn, type='slice', id=str(node_id)).get_urn()
+ #node_elem.set('sliver_id', sliver_id)
+
+ # add the sliver type elemnt
+ PGv2SliverType.add_slivers(node_elem.element, sliver)
+
+ # remove all nodes without slivers
+ if not append:
+ for node_elem in self.get_nodes():
+ if not node_elem['client_id']:
+ parent = node_elem.element.getparent()
+ parent.remove(node_elem.element)
+
+ def remove_slivers(self, slivers, network=None, no_dupes=False):
+ PGv2Node.remove_slivers(self.xml, slivers)
+
+ # Links