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#
# jFed support for Rhumba
#
#    Sander Vrijders  <sander.vrijders@intec.ugent.be>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA  02110-1301  USA

import subprocess
import xml.dom.minidom as xml

def create_rspec(testbed, nodes, links):
    testbed.rspec = testbed.exp_name + ".rspec"

    impl = xml.getDOMImplementation()
    doc = impl.createDocument(None, "rspec", None)

    top_el = doc.documentElement
    top_el.setAttribute("xmlns", "http://www.geni.net/resources/rspec/3")
    top_el.setAttribute("type", "request")
    top_el.setAttribute("xmlns:emulab", "http://www.protogeni.net/resources/" +
                        "rspec/ext/emulab/1")
    top_el.setAttribute("xmlns:jfedBonfire", "http://jfed.iminds.be/rspec/" +
                        "ext/jfed-bonfire/1")
    top_el.setAttribute("xmlns:delay", "http://www.protogeni.net/resources/" +
                        "rspec/ext/delay/1")
    top_el.setAttribute("xmlns:jfed-command", "http://jfed.iminds.be/" +
                        "rspec/ext/jfed-command/1")
    top_el.setAttribute("xmlns:client", "http://www.protogeni.net/resources/" +
                        "rspec/ext/client/1")
    top_el.setAttribute("xmlns:jfed-ssh-keys", "http://jfed.iminds.be/rspec" +
                        "/ext/jfed-ssh-keys/1")
    top_el.setAttribute("xmlns:jfed", "http://jfed.iminds.be/rspec/ext/jfed/1")
    top_el.setAttribute("xmlns:sharedvlan", "http://www.protogeni.net/" +
                        "resources/rspec/ext/shared-vlan/1")
    top_el.setAttribute("xmlns:xsi", "http://www.w3.org/2001/" +
                        "XMLSchema-instance")
    top_el.setAttribute("xsi:schemaLocation", "http://www.geni.net/" +
                        "resources/rspec/3 http://www.geni.net/" +
                        "resources/rspec/3/request.xsd")

    for node in nodes:
        el = doc.createElement("node")
        top_el.appendChild(el)
        el.setAttribute("client_id", node.name)
        el.setAttribute("exclusive", "true")
        el.setAttribute("component_manager_id", testbed.authority)

        el2 = doc.createElement("sliver_type")
        el.appendChild(el2)
        el2.setAttribute("name", "raw-pc")

        node.ifs = 0
        for link in links:
            if link.node_a == node or link.node_b == node:
                el3 = doc.createElement("interface")
                if link.node_a == node:
                    link_id = link.int_a.id = node.name + ":if" + str(node.ifs)
                if link.node_b == node:
                    link_id = link.int_b.id = node.name + ":if" + str(node.ifs)

                el3.setAttribute("client_id", link_id)
                node.ifs += 1
                el.appendChild(el3)

    for link in links:
        el = doc.createElement("link")
        top_el.appendChild(el)
        el.setAttribute("client_id", link.name)

        el2 = doc.createElement("component_manager_id")
        el2.setAttribute("name", testbed.authority)
        el.appendChild(el2)

        el3 = doc.createElement("interface_ref")
        el3.setAttribute("client_id", link.int_a.id)
        el.appendChild(el3)

        el4 = doc.createElement("interface_ref")
        el4.setAttribute("client_id", link.int_b.id)
        el.appendChild(el4)

    file = open(testbed.rspec, "w")
    file.write(doc.toprettyxml())
    file.close()

def create_experiment(testbed, nodes, links):
    create_rspec(testbed, nodes, links)
    testbed.manifest = testbed.exp_name + ".rrspec"

    subprocess.call(["java", "-jar", testbed.jfed_jar, "create", "-S", \
                     testbed.proj_name, "--rspec", \
                     testbed.rspec, "-s", \
                     testbed.exp_name, "-p", testbed.cert_file, "-k", \
                     "usercert,userkeys,shareduserallkeys", "--create-slice",\
                     "--manifest", testbed.manifest,
                     "-P", testbed.password, \
                     "-e", testbed.exp_hours])

    rspec = xml.parse(testbed.manifest)
    xml_nodes = rspec.getElementsByTagName("node")

    for xml_node in xml_nodes:
        n_name = xml_node.getAttribute("client_id")
        intfs = xml_node.getElementsByTagName("interface")
        for link in links:
            if link.node_a.name == n_name:
                interface = link.int_a
            if link.node_b.name == n_name:
                interface = link.int_b
        for intf in intfs:
            comp_id = intf.getAttribute("component_id")
            comp_arr = comp_id.split(":")
            interface.name = comp_arr[-1]
            xml_ip = intf.getElementsByTagName("ip")
            interface.ip = xml_ip[0].getAttribute("address")