| package org.onlab.onos.net.trivial.host.impl; |
| |
| import static org.onlab.onos.net.host.HostEvent.Type.HOST_ADDED; |
| import static org.onlab.onos.net.host.HostEvent.Type.HOST_MOVED; |
| import static org.onlab.onos.net.host.HostEvent.Type.HOST_REMOVED; |
| import static org.onlab.onos.net.host.HostEvent.Type.HOST_UPDATED; |
| |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.onlab.onos.net.ConnectPoint; |
| import org.onlab.onos.net.DefaultHost; |
| import org.onlab.onos.net.DeviceId; |
| import org.onlab.onos.net.Host; |
| import org.onlab.onos.net.HostId; |
| import org.onlab.onos.net.host.HostDescription; |
| import org.onlab.onos.net.host.HostEvent; |
| import org.onlab.onos.net.provider.ProviderId; |
| import org.onlab.packet.IPAddress; |
| import org.onlab.packet.MACAddress; |
| import org.onlab.packet.VLANID; |
| |
| import com.google.common.collect.HashMultimap; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Multimap; |
| |
| /** |
| * Manages inventory of end-station hosts using trivial in-memory |
| * implementation. |
| */ |
| public class SimpleHostStore { |
| |
| private final Map<HostId, Host> hosts = new ConcurrentHashMap<>(); |
| |
| // hosts sorted based on their location |
| private final Multimap<ConnectPoint, Host> locations = HashMultimap.create(); |
| |
| /** |
| * Creates a new host or updates the existing one based on the specified |
| * description. |
| * |
| * @param providerId provider identification |
| * @param hostId host identification |
| * @param hostDescription host description data |
| * @return appropriate event or null if no change resulted |
| */ |
| HostEvent createOrUpdateHost(ProviderId providerId, HostId hostId, |
| HostDescription hostDescription) { |
| Host host = hosts.get(hostId); |
| if (host == null) { |
| return createHost(providerId, hostId, hostDescription); |
| } |
| return updateHost(providerId, host, hostDescription); |
| } |
| |
| // creates a new host and sends HOST_ADDED |
| private HostEvent createHost(ProviderId providerId, HostId hostId, |
| HostDescription descr) { |
| DefaultHost newhost = new DefaultHost(providerId, hostId, |
| descr.hwAddress(), |
| descr.vlan(), |
| descr.location(), |
| descr.ipAddresses()); |
| synchronized (this) { |
| hosts.put(hostId, newhost); |
| locations.put(descr.location(), newhost); |
| } |
| return new HostEvent(HOST_ADDED, newhost); |
| } |
| |
| // checks for type of update to host, sends appropriate event |
| private HostEvent updateHost(ProviderId providerId, Host host, |
| HostDescription descr) { |
| DefaultHost updated; |
| HostEvent event; |
| if (host.location().equals(descr.location())) { |
| updated = new DefaultHost(providerId, host.id(), |
| host.mac(), |
| host.vlan(), |
| host.location(), |
| descr.ipAddresses()); |
| event = new HostEvent(HOST_UPDATED, updated); |
| } else { |
| updated = new DefaultHost(providerId, host.id(), |
| host.mac(), |
| host.vlan(), |
| descr.location(), |
| host.ipAddresses()); |
| event = new HostEvent(HOST_MOVED, updated); |
| } |
| synchronized (this) { |
| hosts.put(host.id(), updated); |
| locations.remove(host.location(), host); |
| locations.put(updated.location(), updated); |
| } |
| return event; |
| } |
| |
| /** |
| * Removes the specified host from the inventory. |
| * |
| * @param hostId host identification |
| * @return remove even or null if host was not found |
| */ |
| HostEvent removeHost(HostId hostId) { |
| synchronized (this) { |
| Host host = hosts.remove(hostId); |
| if (host != null) { |
| locations.remove((host.location()), host); |
| return new HostEvent(HOST_REMOVED, host); |
| } |
| return null; |
| } |
| } |
| |
| /** |
| * Returns the number of hosts in the store. |
| * |
| * @return host count |
| */ |
| int getHostCount() { |
| return hosts.size(); |
| } |
| |
| /** |
| * Returns a collection of all hosts in the store. |
| * |
| * @return iterable collection of all hosts |
| */ |
| Iterable<Host> getHosts() { |
| return Collections.unmodifiableSet(new HashSet<Host>(hosts.values())); |
| } |
| |
| /** |
| * Returns the host with the specified identifer. |
| * |
| * @param hostId host identification |
| * @return host or null if not found |
| */ |
| Host getHost(HostId hostId) { |
| return hosts.get(hostId); |
| } |
| |
| /** |
| * Returns the set of all hosts within the specified VLAN. |
| * |
| * @param vlanId vlan id |
| * @return set of hosts in the vlan |
| */ |
| Set<Host> getHosts(VLANID vlanId) { |
| Set<Host> vlanset = new HashSet<Host>(); |
| for (Host h : hosts.values()) { |
| if (h.vlan().equals(vlanId)) { |
| vlanset.add(h); |
| } |
| } |
| return vlanset; |
| } |
| |
| /** |
| * Returns the set of hosts with the specified MAC address. |
| * |
| * @param mac mac address |
| * @return set of hosts with the given mac |
| */ |
| Set<Host> getHosts(MACAddress mac) { |
| Set<Host> macset = new HashSet<>(); |
| for (Host h : hosts.values()) { |
| if (h.mac().equals(mac)) { |
| macset.add(h); |
| } |
| } |
| return macset; |
| } |
| |
| /** |
| * Returns the set of hosts with the specified IP address. |
| * |
| * @param ip ip address |
| * @return set of hosts with the given IP |
| */ |
| Set<Host> getHosts(IPAddress ip) { |
| Set<Host> ipset = new HashSet<>(); |
| for (Host h : hosts.values()) { |
| if (h.ipAddresses().contains(ip)) { |
| ipset.add(h); |
| } |
| } |
| return ipset; |
| } |
| |
| /** |
| * Returns the set of hosts whose location falls on the given connection point. |
| * |
| * @param connectPoint connection point |
| * @return set of hosts |
| */ |
| Set<Host> getConnectedHosts(ConnectPoint connectPoint) { |
| return ImmutableSet.copyOf(locations.get(connectPoint)); |
| } |
| |
| /** |
| * Returns the set of hosts whose location falls on the given device. |
| * |
| * @param deviceId infrastructure device identifier |
| * @return set of hosts |
| */ |
| public Set<Host> getConnectedHosts(DeviceId deviceId) { |
| Set<Host> hostset = new HashSet<>(); |
| for (ConnectPoint p : locations.keySet()) { |
| if (p.deviceId().equals(deviceId)) { |
| hostset.addAll(locations.get(p)); |
| } |
| } |
| return hostset; |
| } |
| |
| } |