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very simple null host provider
Change-Id: I020ccd525e3e96a933ea9f69865d8e03af151500
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/*
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* Copyright 2015 Open Networking Laboratory
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.onosproject.provider.nil.host.impl;
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import org.apache.felix.scr.annotations.Activate;
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import org.apache.felix.scr.annotations.Component;
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import org.apache.felix.scr.annotations.Deactivate;
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import org.apache.felix.scr.annotations.Reference;
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import org.apache.felix.scr.annotations.ReferenceCardinality;
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import org.onlab.packet.MacAddress;
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import org.onlab.packet.VlanId;
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import org.onosproject.net.Device;
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import org.onosproject.net.Host;
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import org.onosproject.net.HostId;
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import org.onosproject.net.HostLocation;
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import org.onosproject.net.PortNumber;
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import org.onosproject.net.device.DeviceEvent;
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import org.onosproject.net.device.DeviceListener;
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import org.onosproject.net.device.DeviceService;
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import org.onosproject.net.host.DefaultHostDescription;
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import org.onosproject.net.host.HostDescription;
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import org.onosproject.net.host.HostProvider;
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import org.onosproject.net.host.HostProviderRegistry;
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import org.onosproject.net.host.HostProviderService;
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import org.onosproject.net.provider.AbstractProvider;
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import org.onosproject.net.provider.ProviderId;
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import org.slf4j.Logger;
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import static org.slf4j.LoggerFactory.getLogger;
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/**
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* Null provider to advertise fake hosts.
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*/
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@Component(immediate = true)
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public class NullHostProvider extends AbstractProvider implements HostProvider {
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private final Logger log = getLogger(getClass());
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@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
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protected DeviceService deviceService;
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@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
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protected HostProviderRegistry providerRegistry;
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private HostProviderService providerService;
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//make sure the device has enough ports to accomodate all of them.
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private static final int HOSTSPERDEVICE = 5;
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private final InternalHostProvider hostProvider = new InternalHostProvider();
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/**
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* Creates an OpenFlow host provider.
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*/
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public NullHostProvider() {
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super(new ProviderId("null", "org.onosproject.provider.nil"));
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}
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/**
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* Creates a provider with the supplier identifier.
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*
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* @param id provider id
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*/
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protected NullHostProvider(ProviderId id) {
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super(id);
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}
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@Activate
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public void activate() {
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providerService = providerRegistry.register(this);
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for (Device dev : deviceService.getDevices()) {
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addHosts(dev);
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}
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deviceService.addListener(hostProvider);
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log.info("Started");
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}
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@Deactivate
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public void deactivate() {
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providerRegistry.unregister(this);
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deviceService.removeListener(hostProvider);
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providerService = null;
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log.info("Stopped");
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}
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@Override
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public void triggerProbe(Host host) {}
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private void addHosts(Device device) {
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for (int i = 0; i < HOSTSPERDEVICE; i++) {
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providerService.hostDetected(
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HostId.hostId(MacAddress.valueOf(i + device.hashCode()),
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VlanId.vlanId((short) -1)),
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buildHostDescription(device, i));
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}
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}
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private void removeHosts(Device device) {
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for (int i = 0; i < HOSTSPERDEVICE; i++) {
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providerService.hostVanished(
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HostId.hostId(MacAddress.valueOf(i + device.hashCode()),
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VlanId.vlanId((short) -1)));
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}
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}
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private HostDescription buildHostDescription(Device device, int port) {
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MacAddress mac = MacAddress.valueOf(device.hashCode() + port);
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HostLocation location = new HostLocation(device.id(),
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PortNumber.portNumber(port), 0L);
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return new DefaultHostDescription(mac, VlanId.vlanId((short) -1), location);
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}
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private class InternalHostProvider implements DeviceListener {
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@Override
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public void event(DeviceEvent event) {
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switch (event.type()) {
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case DEVICE_ADDED:
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addHosts(event.subject());
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break;
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case DEVICE_UPDATED:
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break;
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case DEVICE_REMOVED:
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removeHosts(event.subject());
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break;
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case DEVICE_SUSPENDED:
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break;
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case DEVICE_AVAILABILITY_CHANGED:
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break;
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case PORT_ADDED:
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break;
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case PORT_UPDATED:
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break;
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case PORT_REMOVED:
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break;
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default:
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break;
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}
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}
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}
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}
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