ONOS-2184 - add virtual network host service.
Change-Id: I06922cb1fbd5d351d62215ae2d84b85e15853585
diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkHostService.java b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkHostService.java
new file mode 100644
index 0000000..6642c5a
--- /dev/null
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkHostService.java
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.incubator.net.virtual.impl;
+
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+import org.onlab.packet.VlanId;
+import org.onosproject.event.AbstractListenerManager;
+import org.onosproject.incubator.net.virtual.VirtualHost;
+import org.onosproject.incubator.net.virtual.VirtualNetwork;
+import org.onosproject.incubator.net.virtual.VirtualNetworkService;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Host;
+import org.onosproject.net.HostId;
+import org.onosproject.net.host.HostEvent;
+import org.onosproject.net.host.HostListener;
+import org.onosproject.net.host.HostService;
+
+import java.util.Collection;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Host service implementation built on the virtual network service.
+ */
+public class VirtualNetworkHostService extends AbstractListenerManager<HostEvent, HostListener>
+ implements HostService, VnetService {
+
+ private static final String NETWORK_NULL = "Network ID cannot be null";
+ private static final String HOST_NULL = "Host ID cannot be null";
+
+ private final VirtualNetwork network;
+ private final VirtualNetworkService manager;
+
+ /**
+ * Creates a new virtual network host service object.
+ *
+ * @param virtualNetworkManager virtual network manager service
+ * @param network virtual network
+ */
+ public VirtualNetworkHostService(VirtualNetworkService virtualNetworkManager, VirtualNetwork network) {
+ checkNotNull(network, NETWORK_NULL);
+ this.network = network;
+ this.manager = virtualNetworkManager;
+ }
+
+
+ @Override
+ public int getHostCount() {
+ return manager.getVirtualHosts(this.network.id()).size();
+ }
+
+ @Override
+ public Iterable<Host> getHosts() {
+ return getHostsColl();
+ }
+
+ @Override
+ public Host getHost(HostId hostId) {
+ checkNotNull(hostId, HOST_NULL);
+ Optional<VirtualHost> foundHost = manager.getVirtualHosts(this.network.id())
+ .stream()
+ .filter(host -> hostId.equals(host.id()))
+ .findFirst();
+ if (foundHost.isPresent()) {
+ return foundHost.get();
+ }
+ return null;
+ }
+
+ /**
+ * Gets a collection of virtual hosts.
+ *
+ * @return collection of virtual hosts.
+ */
+ private Collection<Host> getHostsColl() {
+ return manager.getVirtualHosts(this.network.id()).stream().collect(Collectors.toSet());
+ }
+
+ /**
+ * Filters specified collection.
+ *
+ * @param collection collection of hosts to filter
+ * @param predicate condition to filter on
+ * @return collection of virtual hosts that satisfy the filter condition
+ */
+ private Set<Host> filter(Collection<Host> collection, Predicate<Host> predicate) {
+ return collection.stream().filter(predicate).collect(Collectors.toSet());
+ }
+
+ @Override
+ public Set<Host> getHostsByVlan(VlanId vlanId) {
+ checkNotNull(vlanId, "VLAN identifier cannot be null");
+ return filter(getHostsColl(), host -> Objects.equals(host.vlan(), vlanId));
+ }
+
+ @Override
+ public Set<Host> getHostsByMac(MacAddress mac) {
+ checkNotNull(mac, "MAC address cannot be null");
+ return filter(getHostsColl(), host -> Objects.equals(host.mac(), mac));
+ }
+
+ @Override
+ public Set<Host> getHostsByIp(IpAddress ip) {
+ checkNotNull(ip, "IP address cannot be null");
+ return filter(getHostsColl(), host -> host.ipAddresses().contains(ip));
+ }
+
+ @Override
+ public Set<Host> getConnectedHosts(ConnectPoint connectPoint) {
+ checkNotNull(connectPoint, "Connect point cannot be null");
+ return filter(getHostsColl(), host -> host.location().equals(connectPoint));
+ }
+
+ @Override
+ public Set<Host> getConnectedHosts(DeviceId deviceId) {
+ checkNotNull(deviceId, "Device identifier cannot be null");
+ return filter(getHostsColl(), host -> host.location().deviceId().equals(deviceId));
+ }
+
+ @Override
+ public void startMonitoringIp(IpAddress ip) {
+ //TODO check what needs to be done here
+ }
+
+ @Override
+ public void stopMonitoringIp(IpAddress ip) {
+ //TODO check what needs to be done here
+ }
+
+ @Override
+ public void requestMac(IpAddress ip) {
+ //TODO check what needs to be done here
+ }
+
+ @Override
+ public VirtualNetwork network() {
+ return network;
+ }
+}