/*
* Copyright 2015-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.openflow.controller.impl;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Lists;
import com.google.common.collect.Multimap;
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.Modified;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.Service;
import org.onosproject.cfg.ComponentConfigService;
import org.onosproject.core.CoreService;
import org.onosproject.net.device.DeviceEvent;
import org.onosproject.net.device.DeviceListener;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.driver.DriverService;
import org.onosproject.openflow.controller.DefaultOpenFlowPacketContext;
import org.onosproject.openflow.controller.Dpid;
import org.onosproject.openflow.controller.OpenFlowController;
import org.onosproject.openflow.controller.OpenFlowEventListener;
import org.onosproject.openflow.controller.OpenFlowMessageListener;
import org.onosproject.openflow.controller.OpenFlowPacketContext;
import org.onosproject.openflow.controller.OpenFlowSwitch;
import org.onosproject.openflow.controller.OpenFlowSwitchListener;
import org.onosproject.openflow.controller.PacketListener;
import org.onosproject.openflow.controller.RoleState;
import org.onosproject.openflow.controller.driver.OpenFlowAgent;
import org.osgi.service.component.ComponentContext;
import org.projectfloodlight.openflow.protocol.OFCalientFlowStatsEntry;
import org.projectfloodlight.openflow.protocol.OFCalientFlowStatsReply;
import org.projectfloodlight.openflow.protocol.OFCircuitPortStatus;
import org.projectfloodlight.openflow.protocol.OFExperimenter;
import org.projectfloodlight.openflow.protocol.OFFactories;
import org.projectfloodlight.openflow.protocol.OFFlowStatsEntry;
import org.projectfloodlight.openflow.protocol.OFFlowStatsReply;
import org.projectfloodlight.openflow.protocol.OFGroupDescStatsEntry;
import org.projectfloodlight.openflow.protocol.OFGroupDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFGroupStatsEntry;
import org.projectfloodlight.openflow.protocol.OFGroupStatsReply;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFPacketIn;
import org.projectfloodlight.openflow.protocol.OFPortDesc;
import org.projectfloodlight.openflow.protocol.OFPortStatsEntry;
import org.projectfloodlight.openflow.protocol.OFPortStatsReply;
import org.projectfloodlight.openflow.protocol.OFPortStatus;
import org.projectfloodlight.openflow.protocol.OFStatsReply;
import org.projectfloodlight.openflow.protocol.OFStatsReplyFlags;
import org.projectfloodlight.openflow.protocol.OFTableStatsEntry;
import org.projectfloodlight.openflow.protocol.OFTableStatsReply;
import org.projectfloodlight.openflow.protocol.action.OFActionOutput;
import org.projectfloodlight.openflow.protocol.instruction.OFInstruction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import static org.onlab.util.Tools.groupedThreads;
import static org.onosproject.net.Device.Type.CONTROLLER;
import static org.onosproject.net.device.DeviceEvent.Type.DEVICE_REMOVED;
import static org.onosproject.openflow.controller.Dpid.dpid;
@Component(immediate = true)
@Service
public class OpenFlowControllerImpl implements OpenFlowController {
private static final String APP_ID = "org.onosproject.openflow-base";
private static final String DEFAULT_OFPORT = "6633,6653";
private static final int DEFAULT_WORKER_THREADS = 0;
private static final Logger log =
LoggerFactory.getLogger(OpenFlowControllerImpl.class);
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DriverService driverService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected ComponentConfigService cfgService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DeviceService deviceService;
@Property(name = "openflowPorts", value = DEFAULT_OFPORT,
label = "Port numbers (comma separated) used by OpenFlow protocol; default is 6633,6653")
private String openflowPorts = DEFAULT_OFPORT;
@Property(name = "workerThreads", intValue = DEFAULT_WORKER_THREADS,
label = "Number of controller worker threads")
private int workerThreads = DEFAULT_WORKER_THREADS;
protected ExecutorService executorMsgs =
Executors.newFixedThreadPool(32, groupedThreads("onos/of", "event-stats-%d", log));
private final ExecutorService executorBarrier =
Executors.newFixedThreadPool(4, groupedThreads("onos/of", "event-barrier-%d", log));
//Separate executor thread for handling error messages and barrier replies for same failed
// transactions to avoid context switching of thread
protected ExecutorService executorErrorMsgs =
Executors.newSingleThreadExecutor(groupedThreads("onos/of", "event-error-msg-%d", log));
//concurrent hashmap to track failed transactions
protected ConcurrentMap<Long, Boolean> errorMsgs =
new ConcurrentHashMap<>();
protected ConcurrentMap<Dpid, OpenFlowSwitch> connectedSwitches =
new ConcurrentHashMap<>();
protected ConcurrentMap<Dpid, OpenFlowSwitch> activeMasterSwitches =
new ConcurrentHashMap<>();
protected ConcurrentMap<Dpid, OpenFlowSwitch> activeEqualSwitches =
new ConcurrentHashMap<>();
// Key: dpid, value: map with key: long (XID), value: completable future
protected ConcurrentMap<Dpid, ConcurrentMap<Long, CompletableFuture<OFMessage>>> responses =
new ConcurrentHashMap<>();
protected OpenFlowSwitchAgent agent = new OpenFlowSwitchAgent();
protected Set<OpenFlowSwitchListener> ofSwitchListener = new CopyOnWriteArraySet<>();
protected Multimap<Integer, PacketListener> ofPacketListener =
ArrayListMultimap.create();
protected Set<OpenFlowEventListener> ofEventListener = new CopyOnWriteArraySet<>();
protected Set<OpenFlowMessageListener> ofMessageListener = new CopyOnWriteArraySet<>();
protected Multimap<Dpid, OFFlowStatsEntry> fullFlowStats =
ArrayListMultimap.create();
protected Multimap<Dpid, OFTableStatsEntry> fullTableStats =
ArrayListMultimap.create();
protected Multimap<Dpid, OFGroupStatsEntry> fullGroupStats =
ArrayListMultimap.create();
protected Multimap<Dpid, OFGroupDescStatsEntry> fullGroupDescStats =
ArrayListMultimap.create();
protected Multimap<Dpid, OFPortStatsEntry> fullPortStats =
ArrayListMultimap.create();
private final Controller ctrl = new Controller();
private InternalDeviceListener listener = new InternalDeviceListener();
@Activate
public void activate(ComponentContext context) {
coreService.registerApplication(APP_ID, this::cleanup);
cfgService.registerProperties(getClass());
deviceService.addListener(listener);
ctrl.setConfigParams(context.getProperties());
ctrl.start(agent, driverService);
}
private void cleanup() {
// Close listening channel and all OF channels. Clean information about switches
// before deactivating
ctrl.stop();
connectedSwitches.values().forEach(OpenFlowSwitch::disconnectSwitch);
connectedSwitches.clear();
activeMasterSwitches.clear();
activeEqualSwitches.clear();
}
@Deactivate
public void deactivate() {
deviceService.removeListener(listener);
cleanup();
cfgService.unregisterProperties(getClass(), false);
}
@Modified
public void modified(ComponentContext context) {
ctrl.stop();
ctrl.setConfigParams(context.getProperties());
ctrl.start(agent, driverService);
}
@Override
public Iterable<OpenFlowSwitch> getSwitches() {
return connectedSwitches.values();
}
@Override
public Iterable<OpenFlowSwitch> getMasterSwitches() {
return activeMasterSwitches.values();
}
@Override
public Iterable<OpenFlowSwitch> getEqualSwitches() {
return activeEqualSwitches.values();
}
@Override
public OpenFlowSwitch getSwitch(Dpid dpid) {
return connectedSwitches.get(dpid);
}
@Override
public OpenFlowSwitch getMasterSwitch(Dpid dpid) {
return activeMasterSwitches.get(dpid);
}
@Override
public OpenFlowSwitch getEqualSwitch(Dpid dpid) {
return activeEqualSwitches.get(dpid);
}
@Override
public void addListener(OpenFlowSwitchListener listener) {
if (!ofSwitchListener.contains(listener)) {
this.ofSwitchListener.add(listener);
}
}
@Override
public void removeListener(OpenFlowSwitchListener listener) {
this.ofSwitchListener.remove(listener);
}
@Override
public void addMessageListener(OpenFlowMessageListener listener) {
ofMessageListener.add(listener);
}
@Override
public void removeMessageListener(OpenFlowMessageListener listener) {
ofMessageListener.remove(listener);
}
@Override
public void addPacketListener(int priority, PacketListener listener) {
ofPacketListener.put(priority, listener);
}
@Override
public void removePacketListener(PacketListener listener) {
ofPacketListener.values().remove(listener);
}
@Override
public void addEventListener(OpenFlowEventListener listener) {
ofEventListener.add(listener);
}
@Override
public void removeEventListener(OpenFlowEventListener listener) {
ofEventListener.remove(listener);
}
@Override
public void write(Dpid dpid, OFMessage msg) {
this.getSwitch(dpid).sendMsg(msg);
}
@Override
public CompletableFuture<OFMessage> writeResponse(Dpid dpid, OFMessage msg) {
write(dpid, msg);
ConcurrentMap<Long, CompletableFuture<OFMessage>> xids =
responses.computeIfAbsent(dpid, k -> new ConcurrentHashMap());
CompletableFuture<OFMessage> future = new CompletableFuture();
xids.put(msg.getXid(), future);
return future;
}
@Override
public void processPacket(Dpid dpid, OFMessage msg) {
Collection<OFFlowStatsEntry> flowStats;
Collection<OFTableStatsEntry> tableStats;
Collection<OFGroupStatsEntry> groupStats;
Collection<OFGroupDescStatsEntry> groupDescStats;
Collection<OFPortStatsEntry> portStats;
OpenFlowSwitch sw = this.getSwitch(dpid);
// Check if someone is waiting for this message
ConcurrentMap<Long, CompletableFuture<OFMessage>> xids = responses.get(dpid);
if (xids != null && xids.containsKey(msg.getXid())) {
xids.remove(msg.getXid()).complete(msg);
}
switch (msg.getType()) {
case PORT_STATUS:
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.portChanged(dpid, (OFPortStatus) msg);
}
break;
case FEATURES_REPLY:
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.switchChanged(dpid);
}
break;
case PACKET_IN:
if (sw == null) {
log.error("Switch {} is not found", dpid);
break;
}
OpenFlowPacketContext pktCtx = DefaultOpenFlowPacketContext
.packetContextFromPacketIn(sw, (OFPacketIn) msg);
for (PacketListener p : ofPacketListener.values()) {
p.handlePacket(pktCtx);
}
break;
// TODO: Consider using separate threadpool for sensitive messages.
// ie. Back to back error could cause us to starve.
case FLOW_REMOVED:
executorMsgs.execute(new OFMessageHandler(dpid, msg));
break;
case ERROR:
log.debug("Received error message from {}: {}", dpid, msg);
errorMsgs.putIfAbsent(msg.getXid(), true);
executorErrorMsgs.execute(new OFMessageHandler(dpid, msg));
break;
case STATS_REPLY:
OFStatsReply reply = (OFStatsReply) msg;
switch (reply.getStatsType()) {
case PORT_DESC:
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.switchChanged(dpid);
}
break;
case FLOW:
flowStats = publishFlowStats(dpid, (OFFlowStatsReply) reply);
if (flowStats != null) {
OFFlowStatsReply.Builder rep =
OFFactories.getFactory(msg.getVersion()).buildFlowStatsReply();
rep.setEntries(Lists.newLinkedList(flowStats));
rep.setXid(reply.getXid());
executorMsgs.execute(new OFMessageHandler(dpid, rep.build()));
}
break;
case TABLE:
tableStats = publishTableStats(dpid, (OFTableStatsReply) reply);
if (tableStats != null) {
OFTableStatsReply.Builder rep =
OFFactories.getFactory(msg.getVersion()).buildTableStatsReply();
rep.setEntries(Lists.newLinkedList(tableStats));
executorMsgs.execute(new OFMessageHandler(dpid, rep.build()));
}
break;
case GROUP:
groupStats = publishGroupStats(dpid, (OFGroupStatsReply) reply);
if (groupStats != null) {
OFGroupStatsReply.Builder rep =
OFFactories.getFactory(msg.getVersion()).buildGroupStatsReply();
rep.setEntries(Lists.newLinkedList(groupStats));
rep.setXid(reply.getXid());
executorMsgs.execute(new OFMessageHandler(dpid, rep.build()));
}
break;
case GROUP_DESC:
groupDescStats = publishGroupDescStats(dpid,
(OFGroupDescStatsReply) reply);
if (groupDescStats != null) {
OFGroupDescStatsReply.Builder rep =
OFFactories.getFactory(msg.getVersion()).buildGroupDescStatsReply();
rep.setEntries(Lists.newLinkedList(groupDescStats));
rep.setXid(reply.getXid());
executorMsgs.execute(new OFMessageHandler(dpid, rep.build()));
}
break;
case PORT:
executorMsgs.execute(new OFMessageHandler(dpid, reply));
break;
case METER:
executorMsgs.execute(new OFMessageHandler(dpid, reply));
break;
case EXPERIMENTER:
if (reply instanceof OFCalientFlowStatsReply) {
// Convert Calient flow statistics to regular flow stats
// TODO: parse remaining fields such as power levels etc. when we have proper monitoring API
if (sw == null) {
log.error("Switch {} is not found", dpid);
break;
}
OFFlowStatsReply.Builder fsr = sw.factory().buildFlowStatsReply();
List<OFFlowStatsEntry> entries = new LinkedList<>();
for (OFCalientFlowStatsEntry entry : ((OFCalientFlowStatsReply) msg).getEntries()) {
// Single instruction, i.e., output to port
OFActionOutput action = OFFactories
.getFactory(msg.getVersion())
.actions()
.buildOutput()
.setPort(entry.getOutPort())
.build();
OFInstruction instruction = OFFactories
.getFactory(msg.getVersion())
.instructions()
.applyActions(Collections.singletonList(action));
OFFlowStatsEntry fs = sw.factory().buildFlowStatsEntry()
.setMatch(entry.getMatch())
.setTableId(entry.getTableId())
.setDurationSec(entry.getDurationSec())
.setDurationNsec(entry.getDurationNsec())
.setPriority(entry.getPriority())
.setIdleTimeout(entry.getIdleTimeout())
.setHardTimeout(entry.getHardTimeout())
.setFlags(entry.getFlags())
.setCookie(entry.getCookie())
.setInstructions(Collections.singletonList(instruction))
.build();
entries.add(fs);
}
fsr.setEntries(entries);
flowStats = publishFlowStats(dpid, fsr.build());
if (flowStats != null) {
OFFlowStatsReply.Builder rep =
OFFactories.getFactory(msg.getVersion()).buildFlowStatsReply();
rep.setEntries(Lists.newLinkedList(flowStats));
executorMsgs.execute(new OFMessageHandler(dpid, rep.build()));
}
} else {
executorMsgs.execute(new OFMessageHandler(dpid, reply));
}
break;
default:
log.warn("Discarding unknown stats reply type {}", reply.getStatsType());
break;
}
break;
case BARRIER_REPLY:
if (errorMsgs.containsKey(msg.getXid())) {
//To make oferror msg handling and corresponding barrier reply serialized,
// executorErrorMsgs is used for both transaction
errorMsgs.remove(msg.getXid());
executorErrorMsgs.execute(new OFMessageHandler(dpid, msg));
} else {
executorBarrier.execute(new OFMessageHandler(dpid, msg));
}
break;
case EXPERIMENTER:
if (sw == null) {
log.error("Switch {} is not found", dpid);
break;
}
long experimenter = ((OFExperimenter) msg).getExperimenter();
if (experimenter == 0x748771) {
// LINC-OE port stats
OFCircuitPortStatus circuitPortStatus = (OFCircuitPortStatus) msg;
OFPortStatus.Builder portStatus = sw.factory().buildPortStatus();
OFPortDesc.Builder portDesc = sw.factory().buildPortDesc();
portDesc.setPortNo(circuitPortStatus.getPortNo())
.setHwAddr(circuitPortStatus.getHwAddr())
.setName(circuitPortStatus.getName())
.setConfig(circuitPortStatus.getConfig())
.setState(circuitPortStatus.getState());
portStatus.setReason(circuitPortStatus.getReason()).setDesc(portDesc.build());
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.portChanged(dpid, portStatus.build());
}
} else {
log.warn("Handling experimenter type {} not yet implemented",
((OFExperimenter) msg).getExperimenter(), msg);
}
break;
default:
log.warn("Handling message type {} not yet implemented {}",
msg.getType(), msg);
}
}
private synchronized Collection<OFFlowStatsEntry> publishFlowStats(Dpid dpid,
OFFlowStatsReply reply) {
//TODO: Get rid of synchronized
fullFlowStats.putAll(dpid, reply.getEntries());
if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) {
return fullFlowStats.removeAll(dpid);
}
return null;
}
private synchronized Collection<OFTableStatsEntry> publishTableStats(Dpid dpid,
OFTableStatsReply reply) {
//TODO: Get rid of synchronized
fullTableStats.putAll(dpid, reply.getEntries());
if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) {
return fullTableStats.removeAll(dpid);
}
return null;
}
private synchronized Collection<OFGroupStatsEntry> publishGroupStats(Dpid dpid,
OFGroupStatsReply reply) {
//TODO: Get rid of synchronized
fullGroupStats.putAll(dpid, reply.getEntries());
if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) {
return fullGroupStats.removeAll(dpid);
}
return null;
}
private synchronized Collection<OFGroupDescStatsEntry> publishGroupDescStats(Dpid dpid,
OFGroupDescStatsReply reply) {
//TODO: Get rid of synchronized
fullGroupDescStats.putAll(dpid, reply.getEntries());
if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) {
return fullGroupDescStats.removeAll(dpid);
}
return null;
}
private synchronized Collection<OFPortStatsEntry> publishPortStats(Dpid dpid,
OFPortStatsReply reply) {
fullPortStats.putAll(dpid, reply.getEntries());
if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) {
return fullPortStats.removeAll(dpid);
}
return null;
}
@Override
public void setRole(Dpid dpid, RoleState role) {
final OpenFlowSwitch sw = getSwitch(dpid);
if (sw == null) {
log.debug("Switch not connected. Ignoring setRole({}, {})", dpid, role);
return;
}
sw.setRole(role);
}
class InternalDeviceListener implements DeviceListener {
@Override
public boolean isRelevant(DeviceEvent event) {
return event.subject().type() != CONTROLLER && event.type() == DEVICE_REMOVED;
}
@Override
public void event(DeviceEvent event) {
switch (event.type()) {
case DEVICE_ADDED:
break;
case DEVICE_AVAILABILITY_CHANGED:
break;
case DEVICE_REMOVED:
// Device administratively removed, disconnect
Optional.ofNullable(getSwitch(dpid(event.subject().id().uri())))
.ifPresent(OpenFlowSwitch::disconnectSwitch);
break;
case DEVICE_SUSPENDED:
break;
case DEVICE_UPDATED:
break;
case PORT_ADDED:
break;
case PORT_REMOVED:
break;
case PORT_STATS_UPDATED:
break;
case PORT_UPDATED:
break;
default:
break;
}
}
}
/**
* Implementation of an OpenFlow Agent which is responsible for
* keeping track of connected switches and the state in which
* they are.
*/
public class OpenFlowSwitchAgent implements OpenFlowAgent {
private final Logger log = LoggerFactory.getLogger(OpenFlowSwitchAgent.class);
private final Lock switchLock = new ReentrantLock();
@Override
public boolean addConnectedSwitch(Dpid dpid, OpenFlowSwitch sw) {
if (connectedSwitches.get(dpid) != null) {
log.error("Trying to add connectedSwitch but found a previous "
+ "value for dpid: {}", dpid);
return false;
} else {
log.info("Added switch {}", dpid);
connectedSwitches.put(dpid, sw);
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.switchAdded(dpid);
}
return true;
}
}
@Override
public boolean validActivation(Dpid dpid) {
if (connectedSwitches.get(dpid) == null) {
log.error("Trying to activate switch but is not in "
+ "connected switches: dpid {}. Aborting ..",
dpid);
return false;
}
if (activeMasterSwitches.get(dpid) != null ||
activeEqualSwitches.get(dpid) != null) {
log.error("Trying to activate switch but it is already "
+ "activated: dpid {}. Found in activeMaster: {} "
+ "Found in activeEqual: {}. Aborting ..",
dpid,
(activeMasterSwitches.get(dpid) == null) ? 'N' : 'Y',
(activeEqualSwitches.get(dpid) == null) ? 'N' : 'Y');
return false;
}
return true;
}
@Override
public boolean addActivatedMasterSwitch(Dpid dpid, OpenFlowSwitch sw) {
switchLock.lock();
try {
if (!validActivation(dpid)) {
return false;
}
activeMasterSwitches.put(dpid, sw);
return true;
} finally {
switchLock.unlock();
}
}
@Override
public boolean addActivatedEqualSwitch(Dpid dpid, OpenFlowSwitch sw) {
switchLock.lock();
try {
if (!validActivation(dpid)) {
return false;
}
activeEqualSwitches.put(dpid, sw);
log.info("Added Activated EQUAL Switch {}", dpid);
return true;
} finally {
switchLock.unlock();
}
}
@Override
public void transitionToMasterSwitch(Dpid dpid) {
switchLock.lock();
try {
if (activeMasterSwitches.containsKey(dpid)) {
return;
}
OpenFlowSwitch sw = activeEqualSwitches.remove(dpid);
if (sw == null) {
sw = getSwitch(dpid);
if (sw == null) {
log.error("Transition to master called on sw {}, but switch "
+ "was not found in controller-cache", dpid);
return;
}
}
log.info("Transitioned switch {} to MASTER", dpid);
activeMasterSwitches.put(dpid, sw);
} finally {
switchLock.unlock();
}
}
@Override
public void transitionToEqualSwitch(Dpid dpid) {
switchLock.lock();
try {
if (activeEqualSwitches.containsKey(dpid)) {
return;
}
OpenFlowSwitch sw = activeMasterSwitches.remove(dpid);
if (sw == null) {
sw = getSwitch(dpid);
if (sw == null) {
log.error("Transition to equal called on sw {}, but switch "
+ "was not found in controller-cache", dpid);
return;
}
}
log.info("Transitioned switch {} to EQUAL", dpid);
activeEqualSwitches.put(dpid, sw);
} finally {
switchLock.unlock();
}
}
@Override
public void removeConnectedSwitch(Dpid dpid) {
connectedSwitches.remove(dpid);
OpenFlowSwitch sw = activeMasterSwitches.remove(dpid);
if (sw == null) {
log.debug("sw was null for {}", dpid);
sw = activeEqualSwitches.remove(dpid);
}
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.switchRemoved(dpid);
}
}
@Override
public void processDownstreamMessage(Dpid dpid, List<OFMessage> m) {
for (OpenFlowMessageListener listener : ofMessageListener) {
listener.handleOutgoingMessage(dpid, m);
}
}
@Override
public void processMessage(Dpid dpid, OFMessage m) {
processPacket(dpid, m);
for (OpenFlowMessageListener listener : ofMessageListener) {
listener.handleIncomingMessage(dpid, m);
}
}
@Override
public void returnRoleReply(Dpid dpid, RoleState requested, RoleState response) {
for (OpenFlowSwitchListener l : ofSwitchListener) {
l.receivedRoleReply(dpid, requested, response);
}
}
}
/**
* OpenFlow message handler.
*/
protected final class OFMessageHandler implements Runnable {
protected final OFMessage msg;
protected final Dpid dpid;
public OFMessageHandler(Dpid dpid, OFMessage msg) {
this.msg = msg;
this.dpid = dpid;
}
@Override
public void run() {
for (OpenFlowEventListener listener : ofEventListener) {
listener.handleMessage(dpid, msg);
}
}
}
}