from sfa.rspecs.rspec import RSpec
from sfa.util.xrn import *
from sfa.util.plxrn import hostname_to_urn
-from sfa.util.config import Config
+from sfa.util.config import Config
+from sfa.rspecs.rspec_version import RSpecVersion
-# define some useful xpath queries for this rspec
-xpath_nodes = '//node'
-xpath_nodes_hostnames = '//node/hostname/text()'
-xpath_nodes_with_hostname = '//node[hostname="%s"]/hostname/text()'
-xpath_nodes_with_network = '//network[@name="%s"]//node/hostname/text()'
-xpath_networks = '//network'
-xpath_networks_names = '//network[@name]/@name'
-
+_version = { 'type': 'SFA',
+ 'version': '1'
+}
+
+sfa_rspec_version = RSpecVersion(_sfa_rspec_version)
class SfaRSpec(RSpec):
xml = None
header = '<?xml version="1.0"?>\n'
- namespaces = {}
+ version = sfa_rspec_version
- ########
+ ###################
# Parser
- ########
- def get_networks(self):
- network = None
- return = self.xml.xpath(xpath_network_names, self.namespaces)
-
+ ###################
def get_network_elements(self):
- return self.xml.xpath(xpath_networks, self.namespaces)
+ return self.xml.xpath('//network')
- def get_node_elements(self):
- return self.xml.xpath(xpath_nodes, self.namespaces)
+ def get_networks(self):
+ return self.xml.xpath('//network[@name]/@name')
- def get_nodes(self, network=None, nodes_with_slivers=False):
+ def get_node_element(self, hostname, network=None):
+ if network:
+ names = self.xml.xpath('//network[@name="%s"]//node/hostname' % network)
+ else:
+ names = self.xml.xpath('//node/hostname')
+ for name in names:
+ if name.text == hostname:
+ return name.getparent()
+ return None
+
+ def get_node_elements(self, network=None):
+ if network:
+ return self.xml.xpath('//network[@name="%s"]//node' % network)
+ else:
+ return self.xml.xpath('//node')
+
+ def get_nodes(self, network=None):
if network == None:
- nodes = self.xml.xpath(xpath_nodes_hostnames, self.namespaces)
+ nodes = self.xml.xpath('//node/hostname/text()')
else:
- nodes = self.xml.xpath(xpath_nodes_with_network % network, self.namespaces)
+ nodes = self.xml.xpath('//network[@name="%s"]//node/hostname/text()' % network)
return nodes
- #########
+ def get_nodes_with_slivers(self, network = None):
+ if network:
+ return self.xml.xpath('//network[@name="%s"]//node[sliver]/hostname/text()' % network)
+ else:
+ return self.xml.xpath('//node[sliver]/hostname/text()')
+
+ def get_nodes_without_slivers(self, network=None):
+ xpath_nodes_without_slivers = '//node[not(sliver)]/hostname/text()'
+ xpath_nodes_without_slivers_in_network = '//network[@name="%s"]//node[not(sliver)]/hostname/text()'
+ if network:
+ return self.xml.xpath('//network[@name="%s"]//node[not(sliver)]/hostname/text()' % network)
+ else:
+ return self.xml.xpath('//node[not(sliver)]/hostname/text()')
+
+
+ def attributes_list(self, elem):
+ # convert a list of attribute tags into list of tuples
+ # (tagnme, text_value)
+ opts = []
+ if elem is not None:
+ for e in elem:
+ opts.append((e.tag, e.text))
+ return opts
+
+ def get_default_sliver_attributes(self, network=None):
+ if network:
+ defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
+ else:
+ defaults = self.xml.xpath("//network/sliver_defaults" % network)
+ return self.attributes_list(defaults)
+
+ def get_sliver_attributes(self, hostname, network=None):
+ node = self.get_node_element(hostname, network)
+ sliver = node.find("sliver")
+ return self.attributes_list(sliver)
+
+ def get_site_nodes(self, siteid, network=None):
+ if network:
+ nodes = self.xml.xpath('//network[@name="%s"]/site[@id="%s"]/node/hostname/text()' % \
+ (network, siteid))
+ else:
+ nodes = self.xml.xpath('//site[@id="%s"]/node/hostname/text()' % siteid)
+ return nodes
+
+ def get_links(self, network=None):
+ if network:
+ links = self.xml.xpath('//network[@name="%s"]/link' % network)
+ else:
+ links = self.xml.xpath('//link')
+ linklist = []
+ for link in links:
+ (end1, end2) = link.get("endpoints").split()
+ name = link.find("description")
+ linklist.append((name.text,
+ self.get_site_nodes(end1, network),
+ self.get_site_nodes(end2, network)))
+ return linklist
+
+ def get_link(self, fromnode, tonode, network=None):
+ fromsite = fromnode.getparent()
+ tosite = tonode.getparent()
+ fromid = fromsite.get("id")
+ toid = tosite.get("id")
+ if network:
+ query = "//network[@name='%s']" % network + "/link[@endpoints = '%s %s']"
+ else:
+ query = "//link[@endpoints = '%s %s']"
+
+ results = self.rspec.xpath(query % (fromid, toid))
+ if not results:
+ results = self.rspec.xpath(query % (toid, fromid))
+ return results
+
+ def query_links(self, fromnode, tonode, network=None):
+ return get_link(fromnode, tonode, network)
+
+ def get_vlinks(self, network=None):
+ vlinklist = []
+ if network:
+ vlinks = self.xml.xpath("//network[@name='%s']//vlink" % network)
+ else:
+ vlinks = self.xml.xpath("//vlink")
+ for vlink in vlinks:
+ endpoints = vlink.get("endpoints")
+ (end1, end2) = endpoints.split()
+ if network:
+ node1 = self.xml.xpath('//network[@name="%s"]//node[@id="%s"]/hostname/text()' % \
+ (network, end1))[0]
+ node2 = self.xml.xpath('//network[@name="%s"]//node[@id="%s"]/hostname/text()' % \
+ (network, end2))[0]
+ else:
+ node1 = self.xml.xpath('//node[@id="%s"]/hostname/text()' % end1)[0]
+ node2 = self.xml.xpath('//node[@id="%s"]/hostname/text()' % end2)[0]
+ desc = "%s <--> %s" % (node1, node2)
+ kbps = vlink.find("kbps")
+ vlinklist.append((endpoints, desc, kbps.text))
+ return vlinklist
+
+ def get_vlink(self, endponts, network=None):
+ if network:
+ query = "//network[@name='%s']//vlink[@endpoints = '%s']" % (network, endpoints)
+ else:
+ query = "//vlink[@endpoints = '%s']" % (network, endpoints)
+ results = self.rspec.xpath(query)
+ return results
+
+ def query_vlinks(self, endpoints, network=None):
+ return get_vlink(endpoints,network)
+
+ ##################
# Builder
- ########
+ ##################
+
+ def add_network(self, network):
+ network_tag = etree.SubElement(self.xml, 'network', id=network)
- def add_nodes(self, nodes, check_for_dupes=False):
+ def add_nodes(self, nodes, network = None, no_dupes=False):
if not isinstance(nodes, list):
nodes = [nodes]
for node in nodes:
- urn = ""
- if check_for_dupes and \
- self.xml.xpath('//rspecv2:node[@component_uuid="%s"]' % urn, self.namespaces):
+ if no_dupes and \
+ self.get_node_element(node['hostname']):
# node already exists
continue
-
- node_tag = etree.SubElement(self.xml, 'node')
- node_type_tag = etree.SubElement(node_tag, 'node_type', type_name='pcvm', type_slots='100')
- available_tag = etree.SubElement(node_tag, 'available').text = 'true'
- exclusive_tag = etree.SubElement(node_tag, 'exclusive').text = 'false'
- location_tag = etree.SubElement(node_tag, 'location')
- interface_tag = etree.SubElement(node_tag, 'interface')
-
-
- def add_slivers(self, slivers, check_for_dupes=False):
- pass
- def add_links(self, links, check_for_dupes=False):
+ network_tag = self.xml
+ if 'network' in node:
+ network = node['network']
+ network_tags = self.xml.xpath('//network[@name="%s"]' % network)
+ if not network_tags:
+ network_tag = etree.SubElement(self.xml, 'network', name=network)
+ else:
+ network_tag = network_tags[0]
+
+ node_tag = etree.SubElement(network_tag, 'node')
+ if 'network' in node:
+ node_tag.set('component_manager_id', network)
+ if 'urn' in node:
+ node_tag.set('component_id', node['urn'])
+ if 'site_urn' in node:
+ node_tag.set('site_id', node['site_urn'])
+ if 'node_id' in node:
+ node_tag.set('node_id', 'n'+str(node['node_id']))
+ if 'hostname' in node:
+ hostname_tag = etree.SubElement(node_tag, 'hostname').text = node['hostname']
+ if 'interfaces' in node:
+ for interface in node['interfaces']:
+ if 'bwlimit' in interface and interface['bwlimit']:
+ bwlimit = etree.SubElement(node_tag, 'bw_limit', units='kbps').text = str(interface['bwlimit']/1000)
+ if 'tags' in node:
+ for tag in node['tags']:
+ # expose this hard wired list of tags, plus the ones that are marked 'sfa' in their category
+ if tag['tagname'] in ['fcdistro', 'arch'] or 'sfa' in tag['category'].split('/'):
+ tag_element = etree.SubElement(node_tag, tag['tagname'], value=tag['value'])
+
+ if 'site' in node:
+ longitude = str(node['site']['longitude'])
+ latitude = str(node['site']['latitude'])
+ location = etree.SubElement(node_tag, 'location', country='unknown', \
+ longitude=longitude, latitude=latitude)
+
+ def add_interfaces(self, interfaces):
+ pass
+
+ def add_links(self, links):
pass
+
+ def add_slivers(self, slivers, network=None, no_dupes=False):
+ if not isinstance(slivers, list):
+ slivers = [slivers]
+
+ nodes_with_slivers = self.get_nodes_with_slivers(network)
+ for sliver in slivers:
+ if sliver['hostname'] in nodes_with_slivers:
+ continue
+ node_elem = self.get_node_element(sliver['hostname'], network)
+ sliver_elem = etree.SubElement(node_elem, 'sliver')
+ if 'tags' in sliver:
+ for tag in sliver['tags']:
+ etree.SubElement(sliver_elem, tag['tagname'], value=tag['value'])
+
+ def remove_slivers(self, slivers, network=None, no_dupes=False):
+ if not isinstance(slivers, list):
+ slivers = [slivers]
+ for sliver in slivers:
+ node_elem = self.get_node_element(sliver['hostname'], network)
+ sliver_elem = node.find('sliver')
+ if sliver_elem != None:
+ node_elem.remove(sliver)
+
+ def add_default_sliver_attribute(self, name, value, network=None):
+ if network:
+ defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
+ else:
+ defaults = self.xml.xpath("//sliver_defaults" % network)
+ if defaults is None:
+ defaults = etree.Element("sliver_defaults")
+ network = self.xml.xpath("//network[@name='%s']" % network)
+ network.insert(0, defaults)
+ self.add_attribute(defaults, name, value)
+
+ def add_sliver_attribute(self, hostname, name, value, network=None):
+ node = self.get_node_element(hostname, network)
+ sliver = node.find("sliver")
+ self.add_attribute(sliver, name, value)
+
+ def remove_default_sliver_attribute(self, name, value, network=None):
+ if network:
+ defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
+ else:
+ defaults = self.xml.xpath("//sliver_defaults" % network)
+ self.remove_attribute(defaults, name, value)
+
+ def remove_sliver_attribute(self, hostname, name, value, network=None):
+ node = self.get_node_element(hostname, network)
+ sliver = node.find("sliver")
+ self.remove_attribute(sliver, name, value)
+
+ def add_vlink(self, fromhost, tohost, kbps, network=None):
+ fromnode = self.get_node_element(fromhost, network)
+ tonode = self.get_node_element(tohost, network)
+ links = self.get_link(fromnode, tonode, network)
+
+ for link in links:
+ vlink = etree.SubElement(link, "vlink")
+ fromid = fromnode.get("id")
+ toid = tonode.get("id")
+ vlink.set("endpoints", "%s %s" % (fromid, toid))
+ self.add_attribute(vlink, "kbps", kbps)
+
+
+ def remove_vlink(self, endpoints, network=None):
+ vlinks = self.query_vlinks(endpoints, network)
+ for vlink in vlinks:
+ vlink.getparent().remove(vlink)
+
+
+ def merge(self, in_rspec):
+ """
+ Merge contents for specified rspec with current rspec
+ """
+ # just copy over all networks
+ current_networks = self.get_networks()
+ rspec = SfaRSpec(rspec=in_rspec)
+ networks = rspec.get_network_elements()
+ for network in networks:
+ current_network = network.get('name')
+ if not current_network in current_networks:
+ self.xml.append(network)
+ current_networks.append(current_network)
+
+
if __name__ == '__main__':
rspec = SfaRSpec()
- rspec.add_nodes([1])
+ nodes = [
+ {'network': 'plc',
+ 'hostname': 'node1.planet-lab.org',
+ 'site_urn': 'urn:publicid:IDN+plc+authority+cm',
+ 'node_id': 1,
+ },
+ {'network': 'plc',
+ 'hostname': 'node2.planet-lab.org',
+ 'site_urn': 'urn:publicid:IDN+plc+authority+cm',
+ 'node_id': 1,
+ },
+ {'network': 'ple',
+ 'hostname': 'node1.planet-lab.eu',
+ 'site_urn': 'urn:publicid:IDN+plc+authority+cm',
+ 'node_id': 1,
+ },
+ ]
+ rspec.add_nodes(nodes)
print rspec
git://git.onelab.eu / sfa.git / blobdiff