def get_or_add_hypervisor(self, graph_db, resource_id, pop, timestamp, properties=None):
        """
        Retrieve or add the Hypervisor node from the DB
        :param graph_db: Graph DB instance
        :param resource_id: ID of the Hypervisor
        :param pop: PoP ID
        :param timestamp: timestamp in epoch
        :param properties: optional properties of the node
        :return Node: Hypervisor node
        """
        if not properties:
            properties = dict()

        with mutex:
            properties['pop'] = pop
            index = (self.label, 'openstack_uuid', 'hypervisor-' + str(resource_id))
            hyperv_node = neo_resource.add_node(graph_db,
                                                index,
                                                timestamp,
                                                properties)

            if self.hostname:
                host_node = HostNode(self.hostname).get_resource(graph_db, timestamp)
                if host_node:
                    neo_resource.add_edge(graph_db, hyperv_node, host_node, timestamp, 'runs_on')
            return hyperv_node
 def store(self, graph_db, properties, pop, timestamp):
     """
     Store a new controller service in the Graph DB
     :param graph_db: Graph DB instance
     :param properties: properties of the controller node
     :param pop: PoP ID
     :param timestamp: timestamp in epoch
     """
     with mutex:
         if self.uuid:
             properties['pop'] = pop
             controller_service_node = self.get_or_add_resource(graph_db, timestamp, properties)
             host_node = HostNode(properties['hostname']).get_resource(graph_db, timestamp)
             neo_resource.add_edge(graph_db, controller_service_node, host_node,  timestamp, 'runs_on')
    def store(self, path, hwloc_file, cpu_file=None, sriov_file=None, dpdk_file=None, timestamp=None):
        """
        Store information contained in files created by the EPA agents into Neo4j.
        using a networkx graph
        :param path: Path of the files
        :param hwloc_file: Hardware locality file
        :param cpu_file: Optional cpu information file
        :param sriov_file: Optional SR-IOV information file
        :param dpdk_file: Optional DPDK information file
        :param timestamp: Optional timestamp in epoch
        """
        graph = nx.DiGraph()
        xml_root = Et.parse(path + hwloc_file).getroot()
        deleted_edges = {}
        for child in xml_root:
            _parse_object_hwloc(graph, child, self.hostname, deleted_edges, self.pop_id)

        if cpu_file is not None:
            processors_dict = _parse_cpu_info(path + cpu_file)
            _enrich_graph_cpuinfo(graph, processors_dict)

        if dpdk_file is not None:
            dpdk_dict = _parse_dpdk_info(path + dpdk_file)
            _enrich_graph_dpdkinfo(graph, dpdk_dict)

        if sriov_file is not None:
            sriov_dict = _parse_sriov_info(path + sriov_file)
            _enrich_graph_sriovinfo(graph, sriov_dict)

        if timestamp is not None:
            now = timestamp
        else:
            now = time.time()

        neo_id_nodes = {}

        nodes_to_add = []
        nodes_stored = []

        query_string = (
            "Match n Where n.hostname = {hostname} " "And n.resource_type = {resource_type} Return n.physical_name"
        )

        res = self.graph_db.cypher.execute(query_string, hostname=self.hostname, resource_type="physical")

        for item in res:
            print str(item)
            nodes_stored.append(item["n.physical_name"])

        for nx_node in graph.nodes():
            nodes_to_add.append(str(nx_node))
            neo_id_nodes[nx_node] = neo_resource.add_node(
                self.graph_db, (self.label, self.index, nx_node), now, get_node_properties(graph, nx_node)
            )

        nodes_to_remove = [item for item in nodes_stored if item not in nodes_to_add]

        for node in nodes_to_remove:
            neo_resource.delete_node(self.graph_db, (self.label, self.index, node))

        for edge in graph.edges():
            source = edge[0]
            target = edge[1]
            edge_label = ""
            if "label" in graph.edge[source][target]:
                edge_label = graph.edge[source][target]["label"]
            db_src = neo_id_nodes[source]
            db_target = neo_id_nodes[target]
            rel_stored = neo_resource.get_edge(self.graph_db, db_src, db_target)
            if rel_stored is None:
                neo_resource.add_edge(self.graph_db, db_src, db_target, timestamp, edge_label)
            else:
                neo_resource.update_edge(self.graph_db, timestamp, edge_label, db_src=db_src, db_target=db_target)
    def store(self, graph_db, properties, pop, timestamp,
              in_edges=None, out_edges=None, host_nodes=None,
              controller_services=None, hypervisors=None, update=False):
        """
        Store the resource to the Graph DB
        :param graph_db: Graph DB instance
        :param properties: properties of the node
        :param pop: PoP ID
        :param timestamp: timestamp in epoch
        :param in_edges: inward relations
        :param out_edges: outward relations
        :param host_nodes: Machine node where the resource is running on
        :param controller_services: Controller services that manage the resource
        :param hypervisors: hypervisor where the resource is running on, if any
        :param update: if true, it updates an existing node
        """
        with mutex:
            properties['pop'] = pop

            if update:
                openstack_node = neo_resource.update_node(graph_db, self.index, timestamp, properties=properties)
            else:
                openstack_node = neo_resource.add_node(graph_db, self.index, timestamp, properties=properties)

            if openstack_node:
                if in_edges:
                    for in_edge in in_edges:
                        if in_edges[in_edge]['mandatory']:
                            in_node = OpenstackResource(in_edge).get_or_add_resource(graph_db, timestamp)
                        else:
                            in_node = OpenstackResource(in_edge).get_resource(graph_db)
                        if in_node:
                            neo_resource.add_edge(graph_db, in_node, openstack_node, timestamp,
                                                  in_edges[in_edge]['label'])

                if out_edges:
                    for out_edge in out_edges:
                        if out_edges[out_edge]['mandatory']:
                            out_node = OpenstackResource(out_edge).get_or_add_resource(graph_db, timestamp)
                        else:
                            out_node = OpenstackResource(out_edge).get_resource(graph_db)
                        if out_node:
                            neo_resource.add_edge(graph_db, openstack_node, out_node, timestamp,
                                                  out_edges[out_edge]['label'])

                if host_nodes:
                    for host in host_nodes:
                        host_node = HostNode(host).get_resource(graph_db, timestamp)
                        if host_node:
                            neo_resource.add_edge(graph_db, openstack_node, host_node, timestamp, 'runs_on')

                if hypervisors:
                    for host in hypervisors:
                        hypervisor = Hypervisor(host).get_hypervisor(graph_db)
                        if hypervisor:
                            neo_resource.add_edge(graph_db, openstack_node, hypervisor, timestamp, 'deployed_on')

                if controller_services:
                    for service in controller_services:
                        service_node = ControllerService().get_resource_by_type(graph_db, service)
                        if service_node:
                            neo_resource.add_edge(graph_db, service_node, openstack_node,
                                                  timestamp, 'manages')

                if openstack_node.properties['type'] == 'port':
                    if 'profile' in openstack_node.properties['attributes']:
                        port_attributes = json.loads(openstack_node.properties['attributes'])
                        if 'profile' in port_attributes and 'pci_slot' in port_attributes['profile']:
                            pci_dev = neo_resource.get_nodes_by_attribute(graph_db,
                                                                          openstack_node.properties['hostname'],
                                                                          port_attributes['profile']['pci_slot'])

                        if pci_dev and len(pci_dev) == 1:
                            neo_resource.add_edge(graph_db, openstack_node, pci_dev[0],
                                                  timestamp, 'runs_on')
                return openstack_node