sfa/rspecs/versions/slabv1.py

   1 from copy import deepcopy
   2 from StringIO import StringIO
   3 from sfa.util.xrn import Xrn, urn_to_sliver_id
   4 from sfa.util.plxrn import hostname_to_urn, xrn_to_hostname
   5 from sfa.rspecs.version import RSpecVersion
   6 import sys
   7 from sfa.rspecs.elements.versions.slabv1Node import Slabv1Node
   8 from sfa.rspecs.elements.versions.slabv1Sliver import Slabv1Sliver
   9 from sfa.rspecs.elements.versions.slabv1Timeslot import Slabv1Timeslot
  10
  11 class Slabv1(RSpecVersion):
  12     #enabled = True
  13     type = 'Slab'
  14     content_type = 'ad'
  15     version = '1'
  16     #template = '<RSpec type="%s"></RSpec>' % type
  17
  18     schema = 'http://senslab.info/resources/rspec/1/ad.xsd'
  19     namespace = 'http://www.geni.net/resources/rspec/3'
  20     extensions = {
  21         'flack': "http://www.protogeni.net/resources/rspec/ext/flack/1",
  22         'planetlab': "http://www.planet-lab.org/resources/sfa/ext/planetlab/1",
  23     }
  24     namespaces = dict(extensions.items() + [('default', namespace)])
  25     elements = []
  26
  27     # Network
  28     def get_networks(self):
  29         network_elems = self.xml.xpath('//network')
  30         networks = [network_elem.get_instance(fields=['name', 'slice']) for \
  31                     network_elem in network_elems]
  32         return networks
  33
  34
  35     def add_network(self, network):
  36         network_tags = self.xml.xpath('//network[@name="%s"]' % network)
  37         if not network_tags:
  38             network_tag = self.xml.add_element('network', name=network)
  39         else:
  40             network_tag = network_tags[0]
  41         return network_tag
  42
  43
  44     # Nodes
  45
  46     def get_nodes(self, filter=None):
  47         return Slabv1Node.get_nodes(self.xml, filter)
  48
  49     def get_nodes_with_slivers(self):
  50         return Slabv1Node.get_nodes_with_slivers(self.xml)
  51
  52     def get_slice_timeslot(self ):
  53         return Slabv1Timeslot.get_slice_timeslot(self.xml)
  54
  55     def add_nodes(self, nodes, check_for_dupes=False):
  56         return Slabv1Node.add_nodes(self.xml, nodes)
  57
  58     def merge_node(self, source_node_tag, network, no_dupes = False):
  59         if no_dupes and self.get_node_element(node['hostname']):
  60             # node already exists
  61             return
  62         network_tag = self.add_network(network)
  63         network_tag.append(deepcopy(source_node_tag))
  64
  65     # Slivers
  66
  67     def get_sliver_attributes(self, hostname, node, network=None):
  68         print>>sys.stderr, "\r\n \r\n \r\n \t\t SLABV1.PY  get_sliver_attributes hostname %s " %(hostname)
  69         nodes = self.get_nodes({'component_id': '*%s*' %hostname})
  70         attribs = []
  71         print>>sys.stderr, "\r\n \r\n \r\n \t\t SLABV1.PY  get_sliver_attributes-----------------nodes %s  " %(nodes)
  72         if nodes is not None and isinstance(nodes, list) and len(nodes) > 0:
  73             node = nodes[0]
  74         #if node :
  75             #sliver = node.xpath('./default:sliver | ./sliver')
  76             #sliver = node.xpath('./default:sliver', namespaces=self.namespaces)
  77             sliver = node['slivers']
  78
  79             if sliver is not None and isinstance(sliver, list) and len(sliver) > 0:
  80                 sliver = sliver[0]
  81                 attribs = sliver
  82                 #attribs = self.attributes_list(sliver)
  83                 print>>sys.stderr, "\r\n \r\n \r\n \t\t SLABV1.PY  get_sliver_attributes----------NN------- sliver %s self.namespaces %s attribs %s " %(sliver, self.namespaces,attribs)
  84         return attribs
  85
  86     def get_slice_attributes(self, network=None):
  87
  88         slice_attributes = []
  89         slot = self.get_slice_timeslot()
  90         nodes_with_slivers = self.get_nodes_with_slivers()
  91         slice_attributes.append({'timeslot':slot})
  92         #slice_attributes.append({'name': 'timeslot', 'value' : slot})
  93         print>>sys.stderr, "\r\n \r\n \r\n \t\t SLABV1.PY get_slice_attributes -----------------nodes_with_slivers %s "%(nodes_with_slivers)
  94         # TODO: default sliver attributes in the PG rspec?
  95         default_ns_prefix = self.namespaces['default']
  96         for node in nodes_with_slivers:
  97             sliver_attributes = self.get_sliver_attributes(node['component_id'],node, network)
  98             for sliver_attribute in sliver_attributes:
  99                 name=str(sliver_attribute[0])
 100                 text =str(sliver_attribute[1])
 101                 attribs = sliver_attribute[2]
 102                 # we currently only suppor the <initscript> and <flack> attributes
 103                 #if  'info' in name:
 104                     #attribute = {'name': 'flack_info', 'value': str(attribs), 'node_id': node}
 105                     #slice_attributes.append(attribute)
 106                 #elif 'initscript' in name:
 107                 if 'initscript' in name:
 108                     if attribs is not None and 'name' in attribs:
 109                         value = attribs['name']
 110                     else:
 111                         value = text
 112                     attribute = {'name': 'initscript', 'value': value, 'node_id': node}
 113                     slice_attributes.append(attribute)
 114
 115
 116         print>>sys.stderr, "\r\n \r\n \r\n \t\t SLABV1.PY get_slice_attributes ----------------- slice_attributes %s "%(slice_attributes)
 117         return slice_attributes
 118
 119     def attributes_list(self, elem):
 120         opts = []
 121         if elem is not None:
 122             for e in elem:
 123                 opts.append((e.tag, str(e.text).strip(), e.attrib))
 124         return opts
 125
 126     def get_default_sliver_attributes(self, network=None):
 127         return []
 128
 129     def add_default_sliver_attribute(self, name, value, network=None):
 130         pass
 131
 132     def add_slivers(self, hostnames, attributes=[], sliver_urn=None, append=False):
 133         # all nodes hould already be present in the rspec. Remove all
 134         # nodes that done have slivers
 135         print>>sys.stderr, "\r\n \r\n \r\n \t\t\t SLABv1.PY add_slivers  ----->get_node "
 136         for hostname in hostnames:
 137             node_elems = self.get_nodes({'component_id': '*%s*' % hostname})
 138             if not node_elems:
 139                 continue
 140             node_elem = node_elems[0]
 141
 142             # determine sliver types for this node
 143             valid_sliver_types = ['slab-node', 'emulab-openvz', 'raw-pc', 'plab-vserver', 'plab-vnode']
 144             #valid_sliver_types = ['emulab-openvz', 'raw-pc', 'plab-vserver', 'plab-vnode']
 145             requested_sliver_type = None
 146             for sliver_type in node_elem.get('slivers', []):
 147                 if sliver_type.get('type') in valid_sliver_types:
 148                     requested_sliver_type = sliver_type['type']
 149
 150             if not requested_sliver_type:
 151                 continue
 152             sliver = {'type': requested_sliver_type,
 153                      'pl_tags': attributes}
 154             print>>sys.stderr, "\r\n \r\n \r\n \t\t\t SLABv1.PY add_slivers  node_elem %s sliver_type %s \r\n \r\n " %(node_elem, sliver_type)
 155             # remove available element
 156             for available_elem in node_elem.xpath('./default:available | ./available'):
 157                 node_elem.remove(available_elem)
 158
 159             # remove interface elements
 160             for interface_elem in node_elem.xpath('./default:interface | ./interface'):
 161                 node_elem.remove(interface_elem)
 162
 163             # remove existing sliver_type elements
 164             for sliver_type in node_elem.get('slivers', []):
 165                 node_elem.element.remove(sliver_type.element)
 166
 167             # set the client id
 168             node_elem.element.set('client_id', hostname)
 169             if sliver_urn:
 170                 pass
 171                 # TODO
 172                 # set the sliver id
 173                 #slice_id = sliver_info.get('slice_id', -1)
 174                 #node_id = sliver_info.get('node_id', -1)
 175                 #sliver_id = urn_to_sliver_id(sliver_urn, slice_id, node_id)
 176                 #node_elem.set('sliver_id', sliver_id)
 177
 178             # add the sliver type elemnt
 179             Slabv1SliverType.add_slivers(node_elem.element, sliver)
 180
 181         # remove all nodes without slivers
 182         if not append:
 183             for node_elem in self.get_nodes():
 184                 if not node_elem['client_id']:
 185                     parent = node_elem.element.getparent()
 186                     parent.remove(node_elem.element)
 187
 188     def remove_slivers(self, slivers, network=None, no_dupes=False):
 189         Slabv1Node.remove_slivers(self.xml, slivers)
 190
 191
 192
 193     # Utility
 194
 195     def merge(self, in_rspec):
 196         """
 197         Merge contents for specified rspec with current rspec
 198         """
 199         from sfa.rspecs.rspec import RSpec
 200         # just copy over all the child elements under the root element
 201         if isinstance(in_rspec, basestring):
 202             in_rspec = RSpec(in_rspec)
 203
 204         nodes = in_rspec.version.get_nodes()
 205         # protogeni rspecs need to advertise the availabel sliver types
 206         for node in nodes:
 207             if not node.has_key('sliver') or not node['sliver']:
 208                 node['sliver'] = {'name': 'slab-node'}
 209
 210         self.add_nodes(nodes)
 211         #self.add_links(in_rspec.version.get_links())
 212
 213         #
 214         #rspec = RSpec(in_rspec)
 215         #for child in rspec.xml.iterchildren():
 216         #    self.xml.root.append(child)
 217
 218
 219
 220     def cleanup(self):
 221         # remove unncecessary elements, attributes
 222         if self.type in ['request', 'manifest']:
 223             # remove 'available' element from remaining node elements
 224             self.xml.remove_element('//default:available | //available')
 225
 226
 227 class Slabv1Ad(Slabv1):
 228     enabled = True
 229     content_type = 'ad'
 230     schema = 'http://senslab.info/resources/rspec/1/ad.xsd'
 231     #http://www.geni.net/resources/rspec/3/ad.xsd'
 232     template = '<rspec type="advertisement" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://senslab.info/resources/rspec/1" xmlns:flack="http://senslab.info/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xsi:schemaLocation="http://senslab.info/resources/rspec/1 http://senslab.info/resources/rspec/1/ad.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 233
 234 class Slabv1Request(Slabv1):
 235     enabled = True
 236     content_type = 'request'
 237     schema = 'http://senslab.info/resources/rspec/1/request.xsd'
 238     #http://www.geni.net/resources/rspec/3/request.xsd
 239     template = '<rspec type="request" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://senslab.info/resources/rspec/1" xmlns:flack="http://senslab.info/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xsi:schemaLocation="http://senslab.info/resources/rspec/1 http://senslab.info/resources/rspec/1/request.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 240
 241 class Slabv1Manifest(Slabv1):
 242     enabled = True
 243     content_type = 'manifest'
 244     schema = 'http://senslab.info/resources/rspec/1/manifest.xsd'
 245     #http://www.geni.net/resources/rspec/3/manifest.xsd
 246     template = '<rspec type="manifest" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://senslab.info/resources/rspec/1" xmlns:flack="http://senslab.info/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xsi:schemaLocation="http://senslab.info/resources/rspec/1 http://senslab.info/resources/rspec/1/manifest.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 247
 248
 249 if __name__ == '__main__':
 250     from sfa.rspecs.rspec import RSpec
 251     from sfa.rspecs.rspec_elements import *
 252     r = RSpec('/tmp/slab.rspec')
 253     r.load_rspec_elements(Slabv1.elements)
 254     r.namespaces = Slabv1.namespaces
 255     print r.get(RSpecElements.NODE)