1 from copy import deepcopy
3 from sfa.util.xrn import hrn_to_urn, urn_to_hrn
4 from sfa.util.plxrn import PlXrn
5 from sfa.rspecs.rspec_version import BaseVersion
6 from sfa.rspecs.rspec_elements import RSpecElement, RSpecElements
7 from sfa.rspecs.elements.versions.pgv2Link import PGv2Link
8 from sfa.rspecs.elements.versions.sfav1Node import SFAv1Node
10 class SFAv1(BaseVersion):
20 template = '<RSpec type="%s"></RSpec>' % type
22 def get_network_elements(self):
23 return self.xml.xpath('//network')
25 def get_networks(self):
26 return self.xml.xpath('//network[@name]/@name')
28 def get_nodes(self, network=None):
29 return SFAv1Node.get_nodes(self.xml)
31 def get_nodes_with_slivers(self, network = None):
32 return SFAv1Node.get_nodes_with_slivers(self.xml)
34 def attributes_list(self, elem):
35 # convert a list of attribute tags into list of tuples
36 # (tagnme, text_value)
40 opts.append((e.tag, str(e.text).strip()))
43 def get_default_sliver_attributes(self, network=None):
45 defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
47 defaults = self.xml.xpath("//sliver_defaults")
48 if isinstance(defaults, list) and defaults:
49 defaults = defaults[0]
50 return self.attributes_list(defaults)
52 def get_sliver_attributes(self, hostname, network=None):
54 node = self.get_node_element(hostname, network)
55 #sliver = node.find("sliver")
56 slivers = node.xpath('./sliver')
57 if isinstance(slivers, list) and slivers:
58 attributes = self.attributes_list(slivers[0])
61 def get_slice_attributes(self, network=None):
63 nodes_with_slivers = self.get_nodes_with_slivers(network)
64 for default_attribute in self.get_default_sliver_attributes(network):
65 attribute = {'name': str(default_attribute[0]), 'value': str(default_attribute[1]), 'node_id': None}
66 slice_attributes.append(attribute)
67 for node in nodes_with_slivers:
68 sliver_attributes = self.get_sliver_attributes(node, network)
69 for sliver_attribute in sliver_attributes:
70 attribute = {'name': str(sliver_attribute[0]), 'value': str(sliver_attribute[1]), 'node_id': node}
71 slice_attributes.append(attribute)
72 return slice_attributes
74 def get_links(self, network=None):
75 return PGv2Link.get_links(self.xml)
77 def get_link_requests(self):
78 return PGv2Link.get_link_requests(self.xml)
84 def add_network(self, network):
85 network_tags = self.xml.xpath('//network[@name="%s"]' % network)
87 network_tag = etree.SubElement(self.xml.root, 'network', name=network)
89 network_tag = network_tags[0]
92 def add_nodes(self, nodes, network = None, no_dupes=False):
93 SFAv1Node.add_nodes(self.xml, nodes)
95 def merge_node(self, source_node_tag, network, no_dupes=False):
96 if no_dupes and self.get_node_element(node['hostname']):
100 network_tag = self.add_network(network)
101 network_tag.append(deepcopy(source_node_tag))
103 def add_links(self, links):
104 networks = self.get_network_elements()
105 if len(networks) > 0:
109 PGv2Link.add_links(xml, links)
111 def add_link_requests(self, links):
112 PGv2Link.add_link_requests(self.xml, links)
114 def add_slivers(self, slivers, network=None, sliver_urn=None, no_dupes=False, append=False):
115 # add slice name to network tag
116 network_tags = self.xml.xpath('//network')
118 network_tag = network_tags[0]
119 network_tag.set('slice', urn_to_hrn(sliver_urn)[0])
121 all_nodes = self.get_nodes()
122 nodes_with_slivers = [sliver['hostname'] for sliver in slivers]
123 nodes_without_slivers = set(all_nodes).difference(nodes_with_slivers)
126 for sliver in slivers:
127 node_elem = self.get_node_element(sliver['hostname'], network)
128 if not node_elem: continue
129 sliver_elem = etree.SubElement(node_elem, 'sliver')
131 for tag in sliver['tags']:
132 etree.SubElement(sliver_elem, tag['tagname']).text = value=tag['value']
134 # remove all nodes without slivers
136 for node in nodes_without_slivers:
137 node_elem = self.get_node_element(node)
138 parent = node_elem.getparent()
139 parent.remove(node_elem)
141 def remove_slivers(self, slivers, network=None, no_dupes=False):
142 SFAv1Node.remove_slivers(self.xml, slivers)
144 def add_default_sliver_attribute(self, name, value, network=None):
146 defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
148 defaults = self.xml.xpath("//sliver_defaults" % network)
150 network_tag = self.xml.xpath("//network[@name='%s']" % network)
151 if isinstance(network_tag, list):
152 network_tag = network_tag[0]
153 defaults = self.xml.add_element('sliver_defaults', attrs={}, parent=network_tag)
154 elif isinstance(defaults, list):
155 defaults = defaults[0]
156 self.xml.add_attribute(defaults, name, value)
158 def add_sliver_attribute(self, hostname, name, value, network=None):
159 node = self.get_node_element(hostname, network)
160 sliver = node.find("sliver")
161 self.xml.add_attribute(sliver, name, value)
163 def remove_default_sliver_attribute(self, name, value, network=None):
165 defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
167 defaults = self.xml.xpath("//sliver_defaults" % network)
168 self.xml.remove_attribute(defaults, name, value)
170 def remove_sliver_attribute(self, hostname, name, value, network=None):
171 node = self.get_node_element(hostname, network)
172 sliver = node.find("sliver")
173 self.xml.remove_attribute(sliver, name, value)
175 def merge(self, in_rspec):
177 Merge contents for specified rspec with current rspec
180 from sfa.rspecs.rspec import RSpec
181 if isinstance(in_rspec, RSpec):
184 rspec = RSpec(in_rspec)
185 if rspec.version.type.lower() == 'protogeni':
186 from sfa.rspecs.rspec_converter import RSpecConverter
187 in_rspec = RSpecConverter.to_sfa_rspec(rspec.toxml())
188 rspec = RSpec(in_rspec)
190 # just copy over all networks
191 current_networks = self.get_networks()
192 networks = rspec.version.get_network_elements()
193 for network in networks:
194 current_network = network.get('name')
195 if current_network and current_network not in current_networks:
196 self.xml.root.append(network)
197 current_networks.append(current_network)
199 if __name__ == '__main__':
200 from sfa.rspecs.rspec import RSpec
201 from sfa.rspecs.rspec_elements import *
202 r = RSpec('/tmp/resources.rspec')
203 r.load_rspec_elements(SFAv1.elements)
204 print r.get(RSpecElements.NODE)