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/*
* Copyright 2014-2015 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.cordvtn;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.Service;
import org.onlab.util.KryoNamespace;
import org.onosproject.core.CoreService;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.onosproject.net.Host;
import org.onosproject.net.device.DeviceEvent;
import org.onosproject.net.device.DeviceListener;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.host.HostEvent;
import org.onosproject.net.host.HostListener;
import org.onosproject.net.host.HostService;
import org.onosproject.store.serializers.KryoNamespaces;
import org.onosproject.store.service.EventuallyConsistentMap;
import org.onosproject.store.service.LogicalClockService;
import org.onosproject.store.service.StorageService;
import org.slf4j.Logger;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.stream.Collectors;
import static org.onlab.util.Tools.groupedThreads;
import static org.onosproject.cordvtn.OvsdbNode.State;
import static org.onosproject.cordvtn.OvsdbNode.State.INIT;
import static org.onosproject.cordvtn.OvsdbNode.State.DISCONNECT;
import static org.onosproject.net.Device.Type.SWITCH;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Provides initial setup or cleanup for provisioning virtual tenant networks
* on ovsdb, integration bridge and vm when they are added or deleted.
*/
@Component(immediate = true)
@Service
public class CordVtn implements CordVtnService {
protected final Logger log = getLogger(getClass());
private static final int NUM_THREADS = 1;
private static final KryoNamespace.Builder NODE_SERIALIZER = KryoNamespace.newBuilder()
.register(KryoNamespaces.API)
.register(OvsdbNode.class);
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected StorageService storageService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected LogicalClockService clockService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DeviceService deviceService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected HostService hostService;
private final ExecutorService eventExecutor = Executors
.newFixedThreadPool(NUM_THREADS, groupedThreads("onos/cordvtn", "event-handler"));
private final DeviceListener deviceListener = new InternalDeviceListener();
private final HostListener hostListener = new InternalHostListener();
private final OvsdbHandler ovsdbHandler = new OvsdbHandler();
private final BridgeHandler bridgeHandler = new BridgeHandler();
private final VmHandler vmHandler = new VmHandler();
private EventuallyConsistentMap<DeviceId, OvsdbNode> nodeStore;
@Activate
protected void activate() {
coreService.registerApplication("org.onosproject.cordvtn");
nodeStore = storageService.<DeviceId, OvsdbNode>eventuallyConsistentMapBuilder()
.withName("cordvtn-nodestore")
.withSerializer(NODE_SERIALIZER)
.withTimestampProvider((k, v) -> clockService.getTimestamp())
.build();
deviceService.addListener(deviceListener);
hostService.addListener(hostListener);
log.info("Started");
}
@Deactivate
protected void deactivate() {
deviceService.removeListener(deviceListener);
hostService.removeListener(hostListener);
eventExecutor.shutdown();
nodeStore.destroy();
log.info("Stopped");
}
@Override
public void addNode(OvsdbNode ovsdbNode) {
if (nodeStore.containsKey(ovsdbNode.deviceId())) {
log.warn("Node {} already exists", ovsdbNode.host());
return;
}
nodeStore.put(ovsdbNode.deviceId(), ovsdbNode);
if (ovsdbNode.state() != INIT) {
updateNode(ovsdbNode, INIT);
}
}
@Override
public void deleteNode(OvsdbNode ovsdbNode) {
if (!nodeStore.containsKey(ovsdbNode.deviceId())) {
log.warn("Node {} does not exist", ovsdbNode.host());
return;
}
updateNode(ovsdbNode, DISCONNECT);
}
@Override
public void updateNode(OvsdbNode ovsdbNode, State state) {
if (!nodeStore.containsKey(ovsdbNode.deviceId())) {
log.warn("Node {} does not exist", ovsdbNode.host());
return;
}
DefaultOvsdbNode updatedNode = new DefaultOvsdbNode(ovsdbNode.host(),
ovsdbNode.ip(),
ovsdbNode.port(),
state);
nodeStore.put(ovsdbNode.deviceId(), updatedNode);
}
@Override
public int getNodeCount() {
return nodeStore.size();
}
@Override
public OvsdbNode getNode(DeviceId deviceId) {
return nodeStore.get(deviceId);
}
@Override
public List<OvsdbNode> getNodes() {
return nodeStore.values()
.stream()
.collect(Collectors.toList());
}
private class InternalDeviceListener implements DeviceListener {
@Override
public void event(DeviceEvent event) {
Device device = event.subject();
ConnectionHandler handler = (device.type() == SWITCH ? bridgeHandler : ovsdbHandler);
switch (event.type()) {
case DEVICE_ADDED:
eventExecutor.submit(() -> handler.connected(device));
break;
case DEVICE_AVAILABILITY_CHANGED:
eventExecutor.submit(() -> handler.disconnected(device));
break;
default:
break;
}
}
}
private class InternalHostListener implements HostListener {
@Override
public void event(HostEvent event) {
Host vm = event.subject();
switch (event.type()) {
case HOST_ADDED:
eventExecutor.submit(() -> vmHandler.connected(vm));
break;
case HOST_REMOVED:
eventExecutor.submit(() -> vmHandler.disconnected(vm));
break;
default:
break;
}
}
}
private class OvsdbHandler implements ConnectionHandler<Device> {
@Override
public void connected(Device device) {
// create bridge and set bridgeId
// set node state connected
}
@Override
public void disconnected(Device device) {
// set node state disconnected if the node exists
// which means that the node is not deleted explicitly
}
}
private class BridgeHandler implements ConnectionHandler<Device> {
@Override
public void connected(Device device) {
// create vxlan port
}
@Override
public void disconnected(Device device) {
}
}
private class VmHandler implements ConnectionHandler<Host> {
@Override
public void connected(Host host) {
// install flow rules for this vm
}
@Override
public void disconnected(Host host) {
// uninstall flow rules associated with this vm
}
}
}
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