| /* |
| * Copyright 2020-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.t3.api; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.MacAddress; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.HostId; |
| |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Represents Network Information Base (NIB) for hosts |
| * and supports alternative functions to |
| * {@link org.onosproject.net.host.HostService} for offline data. |
| */ |
| public class HostNib { |
| |
| // TODO with method optimization, store into subdivided structures at the first load |
| private Set<Host> hosts; |
| |
| // use the singleton helper to create the instance |
| protected HostNib() { |
| } |
| |
| /** |
| * Sets a set of hosts. |
| * |
| * @param hosts host set |
| */ |
| public void setHosts(Set<Host> hosts) { |
| this.hosts = hosts; |
| } |
| |
| /** |
| * Returns the set of hosts. |
| * |
| * @return host set |
| */ |
| public Set<Host> getHosts() { |
| return ImmutableSet.copyOf(hosts); |
| } |
| |
| /** |
| * Returns the host with the specified identifier. |
| * |
| * @param hostId host identifier |
| * @return host or null if one with the given identifier is not known |
| */ |
| public Host getHost(HostId hostId) { |
| return hosts.stream() |
| .filter(host -> host.id().equals(hostId)) |
| .findFirst().orElse(null); |
| } |
| |
| /** |
| * Returns the set of hosts whose most recent location is the specified |
| * connection point. |
| * |
| * @param connectPoint connection point |
| * @return set of hosts connected to the connection point |
| */ |
| public Set<Host> getConnectedHosts(ConnectPoint connectPoint) { |
| // TODO extend this method to support matching on auxLocations as well |
| Set<Host> connectedHosts = hosts.stream() |
| .filter(host -> host.locations().contains(connectPoint)) |
| .collect(Collectors.toSet()); |
| return connectedHosts != null ? ImmutableSet.copyOf(connectedHosts) : ImmutableSet.of(); |
| } |
| |
| /** |
| * Returns the set of hosts that have the specified IP address. |
| * |
| * @param ip ip address |
| * @return set of hosts with the given IP |
| */ |
| public Set<Host> getHostsByIp(IpAddress ip) { |
| Set<Host> hostsByIp = hosts.stream() |
| .filter(host -> host.ipAddresses().contains(ip)) |
| .collect(Collectors.toSet()); |
| return hostsByIp != null ? ImmutableSet.copyOf(hostsByIp) : ImmutableSet.of(); |
| } |
| |
| /** |
| * Returns the set of hosts that have the specified MAC address. |
| * |
| * @param mac mac address |
| * @return set of hosts with the given mac |
| */ |
| public Set<Host> getHostsByMac(MacAddress mac) { |
| Set<Host> hostsByMac = hosts.stream() |
| .filter(host -> host.mac().equals(mac)) |
| .collect(Collectors.toSet()); |
| return hostsByMac != null ? ImmutableSet.copyOf(hostsByMac) : ImmutableSet.of(); |
| } |
| |
| /** |
| * Returns the singleton instance of hosts NIB. |
| * |
| * @return instance of hosts NIB |
| */ |
| public static HostNib getInstance() { |
| return HostNib.SingletonHelper.INSTANCE; |
| } |
| |
| private static class SingletonHelper { |
| private static final HostNib INSTANCE = new HostNib(); |
| } |
| |
| } |