#! /usr/bin/env python
import sys
+
+from copy import deepcopy
from lxml import etree
from StringIO import StringIO
from optparse import OptionParser
+from sfa.util.faults import InvalidRSpec
+from sfa.util.sfalogging import logger
+
+def merge_rspecs(rspecs):
+ """
+ Merge merge a list of RSpecs into 1 RSpec, and return the result.
+ rspecs must be a valid RSpec string or list of RSpec strings.
+ """
+ if not rspecs or not isinstance(rspecs, list):
+ return rspecs
+
+ # ugly hack to avoid sending the same info twice, when the call graph has dags
+ known_networks={}
+ def register_network (network):
+ try:
+ known_networks[network.get('name')]=True
+ except:
+ logger.error("merge_rspecs: cannot register network with no name in rspec")
+ pass
+ def is_registered_network (network):
+ try:
+ return network.get('name') in known_networks
+ except:
+ logger.error("merge_rspecs: cannot retrieve network with no name in rspec")
+ return False
+
+ # the resulting tree
+ rspec = None
+ for input_rspec in rspecs:
+ # ignore empty strings as returned with used call_ids
+ if not input_rspec: continue
+ try:
+ tree = etree.parse(StringIO(input_rspec))
+ except etree.XMLSyntaxError:
+ # consider failing silently here
+ logger.log_exc("merge_rspecs, parse error")
+ message = str(sys.exc_info()[1]) + ' with ' + input_rspec
+ raise InvalidRSpec(message)
+
+ root = tree.getroot()
+ if not root.get("type") in ["SFA"]:
+ logger.error("merge_rspecs: unexpected type for rspec root, %s"%root.get('type'))
+ continue
+ if rspec == None:
+ # we scan the first input, register all networks
+ # in addition we remove duplicates - needed until everyone runs 1.0-10
+ rspec = root
+ for network in root.iterfind("./network"):
+ if not is_registered_network(network):
+ register_network(network)
+ else:
+ # duplicate in the first input - trash it
+ root.remove(network)
+ else:
+ for network in root.iterfind("./network"):
+ if not is_registered_network(network):
+ rspec.append(deepcopy(network))
+ register_network(network)
+ for request in root.iterfind("./request"):
+ rspec.append(deepcopy(request))
+ return etree.tostring(rspec, xml_declaration=True, pretty_print=True)
+
class RSpec:
def __init__(self, xml):
parser = etree.XMLParser(remove_blank_text=True)
tree = etree.parse(StringIO(xml), parser)
self.rspec = tree.getroot()
- def get_node_element(self, hostname):
- names = self.rspec.iterfind("./network/site/node/hostname")
+ # If there is only one network in the rspec, make it the default
+ self.network = None
+ networks = self.get_network_list()
+ if len(networks) == 1:
+ self.network = networks[0]
+
+ # Thierry : need this to locate hostname even if several networks
+ def get_node_element(self, hostname, network=None):
+ if network == None and self.network:
+ network = self.network
+ if network != None:
+ names = self.rspec.iterfind("./network[@name='%s']/site/node/hostname" % network)
+ else:
+ names = self.rspec.iterfind("./network/site/node/hostname")
for name in names:
if name.text == hostname:
return name.getparent()
return None
- def get_node_list(self):
- result = self.rspec.xpath("./network/site/node/hostname/text()")
+ # Thierry : need this to return all nodes in all networks
+ def get_node_list(self, network=None):
+ if network == None and self.network:
+ network = self.network
+ if network != None:
+ return self.rspec.xpath("./network[@name='%s']/site/node/hostname/text()" % network)
+ else:
+ return self.rspec.xpath("./network/site/node/hostname/text()")
+
+ def get_network_list(self):
+ return self.rspec.xpath("./network[@name]/@name")
+
+ def get_sliver_list(self, network=None):
+ if network == None:
+ network = self.network
+ result = self.rspec.xpath("./network[@name='%s']/site/node[sliver]/hostname/text()" % network)
return result
- def get_sliver_list(self):
- result = self.rspec.xpath("./network/site/node[sliver]/hostname/text()")
+ def get_available_node_list(self, network=None):
+ if network == None:
+ network = self.network
+ result = self.rspec.xpath("./network[@name='%s']/site/node[not(sliver)]/hostname/text()" % network)
return result
- def add_sliver(self, hostname):
- node = self.get_node_element(hostname)
+ def add_sliver(self, hostname, network=None):
+ if network == None:
+ network = self.network
+ node = self.get_node_element(hostname, network)
etree.SubElement(node, "sliver")
- def remove_sliver(self, hostname):
- node = self.get_node_element(hostname)
+ def remove_sliver(self, hostname, network=None):
+ if network == None:
+ network = self.network
+ node = self.get_node_element(hostname, network)
node.remove(node.find("sliver"))
def attributes_list(self, elem):
opts.append((e.tag, e.text))
return opts
- def get_default_sliver_attributes(self):
- defaults = self.rspec.find(".//sliver_defaults")
+ def get_default_sliver_attributes(self, network=None):
+ if network == None:
+ network = self.network
+ defaults = self.rspec.find("./network[@name='%s']/sliver_defaults" % network)
return self.attributes_list(defaults)
- def get_sliver_attributes(self, hostname):
- node = self.get_node_element(hostname)
+ def get_sliver_attributes(self, hostname, network=None):
+ if network == None:
+ network = self.network
+ node = self.get_node_element(hostname, network)
sliver = node.find("sliver")
return self.attributes_list(sliver)
opt = etree.SubElement(elem, name)
opt.text = value
- def add_default_sliver_attribute(self, name, value):
- defaults = self.rspec.find(".//sliver_defaults")
+ def add_default_sliver_attribute(self, name, value, network=None):
+ if network == None:
+ network = self.network
+ defaults = self.rspec.find("./network[@name='%s']/sliver_defaults" % network)
+ if defaults is None:
+ defaults = etree.Element("sliver_defaults")
+ network = self.rspec.find("./network[@name='%s']" % network)
+ network.insert(0, defaults)
self.add_attribute(defaults, name, value)
- def add_sliver_attribute(self, hostname, name, value):
- node = self.get_node_element(hostname)
+ def add_sliver_attribute(self, hostname, name, value, network=None):
+ if network == None:
+ network = self.network
+ node = self.get_node_element(hostname, network)
sliver = node.find("sliver")
self.add_attribute(sliver, name, value)
if opt.text == value:
elem.remove(opt)
- def remove_default_sliver_attribute(self, name, value):
- defaults = self.rspec.find(".//sliver_defaults")
+ def remove_default_sliver_attribute(self, name, value, network=None):
+ if network == None:
+ network = self.network
+ defaults = self.rspec.find("./network[@name='%s']/sliver_defaults" % network)
self.remove_attribute(defaults, name, value)
- def remove_sliver_attribute(self, hostname, name, value):
- node = self.get_node_element(hostname)
+ def remove_sliver_attribute(self, hostname, name, value, network=None):
+ if network == None:
+ network = self.network
+ node = self.get_node_element(hostname, network)
sliver = node.find("sliver")
self.remove_attribute(sliver, name, value)
- def get_site_nodes(self, siteid):
- query = './/site[@id="%s"]/node/hostname/text()' % siteid
+ def get_site_nodes(self, siteid, network=None):
+ if network == None:
+ network = self.network
+ query = './network[@name="%s"]/site[@id="%s"]/node/hostname/text()' % (network, siteid)
result = self.rspec.xpath(query)
return result
- def get_link_list(self):
+ def get_link_list(self, network=None):
+ if network == None:
+ network = self.network
linklist = []
- links = self.rspec.iterfind(".//link")
+ links = self.rspec.iterfind("./network[@name='%s']/link" % network)
for link in links:
(end1, end2) = link.get("endpoints").split()
name = link.find("description")
linklist.append((name.text,
- self.get_site_nodes(end1),
- self.get_site_nodes(end2)))
+ self.get_site_nodes(end1, network),
+ self.get_site_nodes(end2, network)))
return linklist
- def get_vlink_list(self):
+ def get_vlink_list(self, network=None):
+ if network == None:
+ network = self.network
vlinklist = []
- vlinks = self.rspec.iterfind(".//vlink")
+ vlinks = self.rspec.iterfind("./network[@name='%s']//vlink" % network)
for vlink in vlinks:
endpoints = vlink.get("endpoints")
(end1, end2) = endpoints.split()
- query = './/node[@id="%s"]/hostname/text()'
+ query = './network[@name="%s"]//node[@id="%s"]/hostname/text()' % network
node1 = self.rspec.xpath(query % end1)[0]
node2 = self.rspec.xpath(query % end2)[0]
desc = "%s <--> %s" % (node1, node2)
vlinklist.append((endpoints, desc, kbps.text))
return vlinklist
- def query_links(self, fromnode, tonode):
+ def query_links(self, fromnode, tonode, network=None):
+ if network == None:
+ network = self.network
fromsite = fromnode.getparent()
tosite = tonode.getparent()
fromid = fromsite.get("id")
toid = tosite.get("id")
- query = ".//link[@endpoints = '%s %s']" % (fromid, toid)
+ query = "./network[@name='%s']/link[@endpoints = '%s %s']" % (network, fromid, toid)
results = self.rspec.xpath(query)
if results == None:
- query = ".//link[@endpoints = '%s %s']" % (toid, fromid)
+ query = "./network[@name='%s']/link[@endpoints = '%s %s']" % (network, toid, fromid)
results = self.rspec.xpath(query)
return results
- def query_vlinks(self, endpoints):
- query = ".//vlink[@endpoints = '%s']" % endpoints
+ def query_vlinks(self, endpoints, network=None):
+ if network == None:
+ network = self.network
+ query = "./network[@name='%s']//vlink[@endpoints = '%s']" % (network, endpoints)
results = self.rspec.xpath(query)
return results
- def add_vlink(self, fromhost, tohost, kbps):
- fromnode = self.get_node_element(fromhost)
- tonode = self.get_node_element(tohost)
- links = self.query_links(fromnode, tonode)
+ def add_vlink(self, fromhost, tohost, kbps, network=None):
+ if network == None:
+ network = self.network
+ fromnode = self.get_node_element(fromhost, network)
+ tonode = self.get_node_element(tohost, network)
+ links = self.query_links(fromnode, tonode, network)
for link in links:
vlink = etree.SubElement(link, "vlink")
self.add_attribute(vlink, "kbps", kbps)
- def remove_vlink(self, endpoints):
- vlinks = self.query_vlinks(endpoints)
+ def remove_vlink(self, endpoints, network=None):
+ if network == None:
+ network = self.network
+ vlinks = self.query_vlinks(endpoints, network)
for vlink in vlinks:
vlink.getparent().remove(vlink)
git://git.onelab.eu / sfa.git / blobdiff