2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.controller.protocol_plugin.openflow.internal;
11 import java.nio.charset.Charset;
12 import java.util.ArrayList;
13 import java.util.Collection;
14 import java.util.Collections;
15 import java.util.HashSet;
16 import java.util.List;
19 import java.util.Timer;
20 import java.util.TimerTask;
21 import java.util.concurrent.BlockingQueue;
22 import java.util.concurrent.ConcurrentHashMap;
23 import java.util.concurrent.ConcurrentMap;
24 import java.util.concurrent.CopyOnWriteArrayList;
25 import java.util.concurrent.LinkedBlockingQueue;
27 import org.eclipse.osgi.framework.console.CommandInterpreter;
28 import org.eclipse.osgi.framework.console.CommandProvider;
29 import org.opendaylight.controller.protocol_plugin.openflow.IDataPacketListen;
30 import org.opendaylight.controller.protocol_plugin.openflow.IDataPacketMux;
31 import org.opendaylight.controller.protocol_plugin.openflow.IDiscoveryListener;
32 import org.opendaylight.controller.protocol_plugin.openflow.IInventoryProvider;
33 import org.opendaylight.controller.protocol_plugin.openflow.IInventoryShimExternalListener;
34 import org.opendaylight.controller.protocol_plugin.openflow.core.IController;
35 import org.opendaylight.controller.protocol_plugin.openflow.core.ISwitch;
36 import org.opendaylight.controller.sal.connection.IPluginOutConnectionService;
37 import org.opendaylight.controller.sal.core.Config;
38 import org.opendaylight.controller.sal.core.ConstructionException;
39 import org.opendaylight.controller.sal.core.ContainerFlow;
40 import org.opendaylight.controller.sal.core.Edge;
41 import org.opendaylight.controller.sal.core.IContainerListener;
42 import org.opendaylight.controller.sal.core.Node;
43 import org.opendaylight.controller.sal.core.NodeConnector;
44 import org.opendaylight.controller.sal.core.Property;
45 import org.opendaylight.controller.sal.core.State;
46 import org.opendaylight.controller.sal.core.UpdateType;
47 import org.opendaylight.controller.sal.packet.Ethernet;
48 import org.opendaylight.controller.sal.packet.LLDP;
49 import org.opendaylight.controller.sal.packet.LLDPTLV;
50 import org.opendaylight.controller.sal.packet.LinkEncap;
51 import org.opendaylight.controller.sal.packet.PacketResult;
52 import org.opendaylight.controller.sal.packet.RawPacket;
53 import org.opendaylight.controller.sal.utils.EtherTypes;
54 import org.opendaylight.controller.sal.utils.HexEncode;
55 import org.opendaylight.controller.sal.utils.NetUtils;
56 import org.opendaylight.controller.sal.utils.NodeConnectorCreator;
57 import org.opendaylight.controller.sal.utils.NodeCreator;
58 import org.openflow.protocol.OFPhysicalPort;
59 import org.osgi.framework.BundleContext;
60 import org.osgi.framework.FrameworkUtil;
61 import org.slf4j.Logger;
62 import org.slf4j.LoggerFactory;
65 * The class describes neighbor discovery service for an OpenFlow network.
67 public class DiscoveryService implements IInventoryShimExternalListener, IDataPacketListen, IContainerListener,
69 private static Logger logger = LoggerFactory.getLogger(DiscoveryService.class);
70 private IController controller = null;
71 private IDiscoveryListener discoveryListener = null;
72 private IInventoryProvider inventoryProvider = null;
73 private IDataPacketMux iDataPacketMux = null;
74 // High priority list containing newly added ports which will be served first
75 private List<NodeConnector> readyListHi = null;
76 // List containing all the ports which will be served periodically
77 private List<NodeConnector> readyListLo = null;
78 // Staging area during quiet period
79 private List<NodeConnector> stagingList = null;
80 // Wait for next discovery packet. The map contains the time elapsed since
81 // the last received LLDP frame on each node connector
82 private ConcurrentMap<NodeConnector, Integer> holdTime = null;
83 // Allow one more retry for newly added ports. This map contains the time
84 // period elapsed since last discovery pkt transmission on the port.
85 private ConcurrentMap<NodeConnector, Integer> elapsedTime = null;
86 // OpenFlow edges keyed by head connector
87 private ConcurrentMap<NodeConnector, Edge> edgeMap = null;
88 // The map contains aging entry keyed by head connector of Production edge
89 private ConcurrentMap<NodeConnector, Integer> agingMap = null;
90 // Production edges keyed by head connector
91 private ConcurrentMap<NodeConnector, Edge> prodMap = null;
93 private Timer discoveryTimer;
94 private DiscoveryTimerTask discoveryTimerTask;
95 private final static long discoveryTimerTick = 2L * 1000; // per tick in msec
96 private int discoveryTimerTickCount = 0; // main tick counter
97 // Max # of ports handled in one batch
98 private int discoveryBatchMaxPorts;
99 // Periodically restart batching process
100 private int discoveryBatchRestartTicks;
101 private int discoveryBatchPausePeriod = 2;
102 // Pause after this point
103 private int discoveryBatchPauseTicks;
104 private int discoveryTimeoutTicks;
105 private int discoveryThresholdTicks;
106 private int discoveryAgeoutTicks;
107 // multiple of discoveryBatchRestartTicks
108 private int discoveryConsistencyCheckMultiple = 2;
110 private int discoveryConsistencyCheckTickCount;
111 // # of times CC gets called
112 private int discoveryConsistencyCheckCallingTimes = 0;
113 // # of cases CC corrected
114 private int discoveryConsistencyCheckCorrected = 0;
115 // Enable or disable CC
116 private boolean discoveryConsistencyCheckEnabled = true;
117 // Enable or disable aging
118 private boolean discoveryAgingEnabled = true;
119 // Global flag to enable or disable LLDP snooping
120 private boolean discoverySnoopingEnabled = true;
121 // The list of ports that will not do LLDP snooping
122 private List<NodeConnector> discoverySnoopingDisableList;
123 private BlockingQueue<NodeConnector> transmitQ;
124 private Thread transmitThread;
125 private Boolean throttling = false; // if true, no more batching.
126 private volatile Boolean shuttingDown = false;
128 private LLDPTLV chassisIdTlv, portIdTlv, ttlTlv, customTlv;
129 private IPluginOutConnectionService connectionOutService;
131 class DiscoveryTransmit implements Runnable {
132 private final BlockingQueue<NodeConnector> transmitQ;
133 private int count = 0;
135 DiscoveryTransmit(BlockingQueue<NodeConnector> transmitQ) {
136 this.transmitQ = transmitQ;
143 NodeConnector nodeConnector = transmitQ.take();
144 RawPacket outPkt = createDiscoveryPacket(nodeConnector);
145 sendDiscoveryPacket(nodeConnector, outPkt);
146 nodeConnector = null;
147 if ((++count & 0x7f) == 0) {
150 } catch (InterruptedException e1) {
151 logger.warn("DiscoveryTransmit interupted", e1.getMessage());
155 } catch (Exception e2) {
156 logger.error("", e2);
162 class DiscoveryTimerTask extends TimerTask {
167 doConsistencyCheck();
172 public enum DiscoveryPeriod {
177 private int time; // sec
178 private int tick; // tick
180 DiscoveryPeriod(int time) {
182 this.tick = time2Tick(time);
185 public int getTime() {
189 public void setTime(int time) {
191 this.tick = time2Tick(time);
194 public int getTick() {
198 public void setTick(int tick) {
199 this.time = tick2Time(tick);
203 private int time2Tick(int time) {
204 return (int) (time / (discoveryTimerTick / 1000));
207 private int tick2Time(int tick) {
208 return (int) (tick * (discoveryTimerTick / 1000));
212 private RawPacket createDiscoveryPacket(NodeConnector nodeConnector) {
213 String nodeId = HexEncode.longToHexString((Long) nodeConnector.getNode().getID());
215 // Create LLDP ChassisID TLV
216 byte[] cidValue = LLDPTLV.createChassisIDTLVValue(nodeId);
217 chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue()).setLength((short) cidValue.length)
220 // Create LLDP PortID TLV
221 String portId = nodeConnector.getNodeConnectorIDString();
222 byte[] pidValue = LLDPTLV.createPortIDTLVValue(portId);
223 portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue()).setLength((short) pidValue.length).setValue(pidValue);
225 // Create LLDP Custom TLV
226 byte[] customValue = LLDPTLV.createCustomTLVValue(nodeConnector.toString());
227 customTlv.setType(LLDPTLV.TLVType.Custom.getValue()).setLength((short) customValue.length)
228 .setValue(customValue);
230 // Create LLDP Custom Option list
231 List<LLDPTLV> customList = new ArrayList<LLDPTLV>();
232 customList.add(customTlv);
234 // Create discovery pkt
235 LLDP discoveryPkt = new LLDP();
236 discoveryPkt.setChassisId(chassisIdTlv).setPortId(portIdTlv).setTtl(ttlTlv).setOptionalTLVList(customList);
238 RawPacket rawPkt = null;
240 // Create ethernet pkt
241 byte[] sourceMac = getSourceMACFromNodeID(nodeId);
242 Ethernet ethPkt = new Ethernet();
243 ethPkt.setSourceMACAddress(sourceMac).setDestinationMACAddress(LLDP.LLDPMulticastMac)
244 .setEtherType(EtherTypes.LLDP.shortValue()).setPayload(discoveryPkt);
246 byte[] data = ethPkt.serialize();
247 rawPkt = new RawPacket(data);
248 rawPkt.setOutgoingNodeConnector(nodeConnector);
249 } catch (ConstructionException cex) {
250 logger.warn("RawPacket creation caught exception {}", cex.getMessage());
251 } catch (Exception e) {
252 logger.error("Failed to serialize the LLDP packet: " + e);
258 private void sendDiscoveryPacket(NodeConnector nodeConnector, RawPacket outPkt) {
259 if (nodeConnector == null) {
260 logger.debug("Can not send discovery packet out since nodeConnector is null");
264 if (!connectionOutService.isLocal(nodeConnector.getNode())) {
265 logger.debug("Discoery packets will not be sent to {} in a non-master controller", nodeConnector.toString());
269 if (outPkt == null) {
270 logger.debug("Can not send discovery packet out since outPkt is null");
274 long sid = (Long) nodeConnector.getNode().getID();
275 ISwitch sw = controller.getSwitches().get(sid);
278 logger.debug("Can not send discovery packet out since switch {} is null", sid);
282 if (!sw.isOperational()) {
283 logger.debug("Can not send discovery packet out since switch {} is not operational", sw);
287 if (this.iDataPacketMux == null) {
288 logger.debug("Can not send discovery packet out since DataPacket service is not available");
292 logger.trace("Sending topology discovery pkt thru {}", nodeConnector);
293 this.iDataPacketMux.transmitDataPacket(outPkt);
297 public PacketResult receiveDataPacket(RawPacket inPkt) {
299 logger.debug("Ignoring null packet");
300 return PacketResult.IGNORED;
303 byte[] data = inPkt.getPacketData();
304 if (data.length <= 0) {
305 logger.trace("Ignoring zero length packet");
306 return PacketResult.IGNORED;
309 if (!inPkt.getEncap().equals(LinkEncap.ETHERNET)) {
310 logger.trace("Ignoring non ethernet packet");
311 return PacketResult.IGNORED;
314 NodeConnector nodeConnector = inPkt.getIncomingNodeConnector();
315 if (((Short) nodeConnector.getID()).equals(NodeConnector.SPECIALNODECONNECTORID)) {
316 logger.trace("Ignoring ethernet packet received on special port: "
317 + inPkt.getIncomingNodeConnector().toString());
318 return PacketResult.IGNORED;
321 if (!connectionOutService.isLocal(nodeConnector.getNode())) {
322 logger.debug("Discoery packets will not be processed from {} in a non-master controller", nodeConnector.toString());
323 return PacketResult.IGNORED;
326 Ethernet ethPkt = new Ethernet();
328 ethPkt.deserialize(data, 0, data.length * NetUtils.NumBitsInAByte);
329 } catch (Exception e) {
330 logger.warn("Failed to decode LLDP packet from {}: {}", inPkt.getIncomingNodeConnector(), e);
331 return PacketResult.IGNORED;
334 if (ethPkt.getPayload() instanceof LLDP) {
335 NodeConnector dst = inPkt.getIncomingNodeConnector();
336 if (isEnabled(dst)) {
337 if (!processDiscoveryPacket(dst, ethPkt)) {
338 // Snoop the discovery pkt if not generated from us
339 snoopDiscoveryPacket(dst, ethPkt);
341 return PacketResult.CONSUME;
344 return PacketResult.IGNORED;
348 * Snoop incoming discovery frames generated by the production network
351 private void snoopDiscoveryPacket(NodeConnector dstNodeConnector, Ethernet ethPkt) {
352 if (!this.discoverySnoopingEnabled || discoverySnoopingDisableList.contains(dstNodeConnector)) {
353 logger.trace("Discarded received discovery packet on {} since snooping is turned off", dstNodeConnector);
357 if ((dstNodeConnector == null) || (ethPkt == null)) {
358 logger.trace("Quit snooping discovery packet: Null node connector or packet");
362 LLDP lldp = (LLDP) ethPkt.getPayload();
365 String nodeId = LLDPTLV.getHexStringValue(lldp.getChassisId().getValue(), lldp.getChassisId().getLength());
366 String portId = LLDPTLV.getStringValue(lldp.getPortId().getValue(), lldp.getPortId().getLength());
367 byte[] systemNameBytes = null;
368 // get system name if present in the LLDP pkt
369 for (LLDPTLV lldptlv : lldp.getOptionalTLVList()) {
370 if (lldptlv.getType() == LLDPTLV.TLVType.SystemName.getValue()) {
371 systemNameBytes = lldptlv.getValue();
375 String nodeName = (systemNameBytes == null) ? nodeId
376 : new String(systemNameBytes, Charset.defaultCharset());
377 Node srcNode = new Node(Node.NodeIDType.PRODUCTION, nodeName);
378 NodeConnector srcNodeConnector = NodeConnectorCreator.createNodeConnector(
379 NodeConnector.NodeConnectorIDType.PRODUCTION, portId, srcNode);
382 Set<Property> props = null;
383 edge = new Edge(srcNodeConnector, dstNodeConnector);
384 props = getProps(dstNodeConnector);
386 updateProdEdge(edge, props);
387 } catch (Exception e) {
388 logger.warn("Caught exception ", e);
393 * Handle discovery frames generated by our controller
395 * @return true if it's a success
397 private boolean processDiscoveryPacket(NodeConnector dstNodeConnector, Ethernet ethPkt) {
398 if ((dstNodeConnector == null) || (ethPkt == null)) {
399 logger.trace("Ignoring processing of discovery packet: Null node connector or packet");
403 logger.trace("Handle discovery packet {} from {}", ethPkt, dstNodeConnector);
405 LLDP lldp = (LLDP) ethPkt.getPayload();
407 List<LLDPTLV> optionalTLVList = lldp.getOptionalTLVList();
408 if (optionalTLVList == null) {
409 logger.info("The discovery packet with null custom option from {}", dstNodeConnector);
414 NodeConnector srcNodeConnector = null;
415 for (LLDPTLV lldptlv : lldp.getOptionalTLVList()) {
416 if (lldptlv.getType() == LLDPTLV.TLVType.Custom.getValue()) {
417 String ncString = LLDPTLV.getCustomString(lldptlv.getValue(), lldptlv.getLength());
418 srcNodeConnector = NodeConnector.fromString(ncString);
419 if (srcNodeConnector != null) {
420 srcNode = srcNodeConnector.getNode();
425 if ((srcNode == null) || (srcNodeConnector == null)) {
426 logger.trace("Received non-controller generated discovery packet from {}", dstNodeConnector);
430 // push it out to Topology
432 Set<Property> props = null;
434 edge = new Edge(srcNodeConnector, dstNodeConnector);
435 props = getProps(dstNodeConnector);
436 } catch (ConstructionException e) {
437 logger.error("Caught exception ", e);
439 addEdge(edge, props);
441 logger.trace("Received discovery packet for Edge {}", edge);
446 public Map<String, Property> getPropMap(NodeConnector nodeConnector) {
447 if (nodeConnector == null) {
451 if (inventoryProvider == null) {
455 Map<NodeConnector, Map<String, Property>> props = inventoryProvider.getNodeConnectorProps(false);
460 return props.get(nodeConnector);
463 public Property getProp(NodeConnector nodeConnector, String propName) {
464 Map<String, Property> propMap = getPropMap(nodeConnector);
465 if (propMap == null) {
469 Property prop = propMap.get(propName);
473 public Set<Property> getProps(NodeConnector nodeConnector) {
474 Map<String, Property> propMap = getPropMap(nodeConnector);
475 if (propMap == null) {
479 Set<Property> props = new HashSet<Property>(propMap.values());
483 private boolean isEnabled(NodeConnector nodeConnector) {
484 if (nodeConnector == null) {
488 Config config = (Config) getProp(nodeConnector, Config.ConfigPropName);
489 State state = (State) getProp(nodeConnector, State.StatePropName);
490 return ((config != null) && (config.getValue() == Config.ADMIN_UP) && (state != null) && (state.getValue() == State.EDGE_UP));
493 private boolean isTracked(NodeConnector nodeConnector) {
494 if (readyListHi.contains(nodeConnector)) {
498 if (readyListLo.contains(nodeConnector)) {
502 if (holdTime.keySet().contains(nodeConnector)) {
506 if (stagingList.contains(nodeConnector)) {
513 private Set<NodeConnector> getWorkingSet() {
514 Set<NodeConnector> workingSet = new HashSet<NodeConnector>();
515 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
517 for (NodeConnector nodeConnector : readyListHi) {
518 if (isOverLimit(workingSet.size())) {
522 workingSet.add(nodeConnector);
523 removeSet.add(nodeConnector);
525 // Put it in the map and start the timer. It may need retry.
526 elapsedTime.put(nodeConnector, 0);
528 readyListHi.removeAll(removeSet);
531 for (NodeConnector nodeConnector : readyListLo) {
532 if (isOverLimit(workingSet.size())) {
536 workingSet.add(nodeConnector);
537 removeSet.add(nodeConnector);
539 readyListLo.removeAll(removeSet);
544 private Boolean isOverLimit(int size) {
545 return ((size >= discoveryBatchMaxPorts) && !throttling);
548 private void addDiscovery() {
549 Map<Long, ISwitch> switches = controller.getSwitches();
550 Set<Long> sidSet = switches.keySet();
551 if (sidSet == null) {
554 for (Long sid : sidSet) {
555 Node node = NodeCreator.createOFNode(sid);
560 private void addDiscovery(Node node) {
561 Map<Long, ISwitch> switches = controller.getSwitches();
562 ISwitch sw = switches.get(node.getID());
564 //switch could be removed by now, stop propagation
567 List<OFPhysicalPort> ports = sw.getEnabledPorts();
568 for (OFPhysicalPort port : ports) {
569 NodeConnector nodeConnector = NodeConnectorCreator.createOFNodeConnector(port.getPortNumber(), node);
570 if (!readyListHi.contains(nodeConnector)) {
571 readyListHi.add(nodeConnector);
576 private void addDiscovery(NodeConnector nodeConnector) {
577 if (isTracked(nodeConnector)) {
581 readyListHi.add(nodeConnector);
584 private void removeNodeConnector(NodeConnector nodeConnector) {
585 readyListLo.remove(nodeConnector);
586 readyListHi.remove(nodeConnector);
587 stagingList.remove(nodeConnector);
588 holdTime.remove(nodeConnector);
589 elapsedTime.remove(nodeConnector);
592 private Set<NodeConnector> getRemoveSet(Collection<NodeConnector> c, Node node) {
593 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
597 for (NodeConnector nodeConnector : c) {
598 if (node.equals(nodeConnector.getNode())) {
599 removeSet.add(nodeConnector);
605 private void removeDiscovery(Node node) {
606 Set<NodeConnector> removeSet;
608 removeSet = getRemoveSet(edgeMap.keySet(), node);
609 NodeConnector peerConnector;
611 for (NodeConnector nodeConnector : removeSet) {
612 // get the peer for fast removal of the edge in reverse direction
613 peerConnector = null;
614 edge1 = edgeMap.get(nodeConnector);
616 edge2 = edgeMap.get(edge1.getTailNodeConnector());
617 if ((edge2 != null) && node.equals(edge2.getTailNodeConnector().getNode())) {
618 peerConnector = edge2.getHeadNodeConnector();
622 removeEdge(nodeConnector, false);
623 removeEdge(peerConnector, isEnabled(peerConnector));
626 removeSet = getRemoveSet(prodMap.keySet(), node);
627 for (NodeConnector nodeConnector : removeSet) {
628 removeProdEdge(nodeConnector);
631 removeSet = getRemoveSet(readyListHi, node);
632 readyListHi.removeAll(removeSet);
634 removeSet = getRemoveSet(readyListLo, node);
635 readyListLo.removeAll(removeSet);
637 removeSet = getRemoveSet(stagingList, node);
638 stagingList.removeAll(removeSet);
640 removeSet = getRemoveSet(holdTime.keySet(), node);
641 for (NodeConnector nodeConnector : removeSet) {
642 holdTime.remove(nodeConnector);
645 removeSet = getRemoveSet(elapsedTime.keySet(), node);
646 for (NodeConnector nodeConnector : removeSet) {
647 elapsedTime.remove(nodeConnector);
651 private void removeDiscovery(NodeConnector nodeConnector) {
652 removeNodeConnector(nodeConnector);
653 removeEdge(nodeConnector, false);
654 removeProdEdge(nodeConnector);
657 private void checkTimeout() {
658 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
661 Set<NodeConnector> monitorSet = holdTime.keySet();
662 if (monitorSet != null) {
663 for (NodeConnector nodeConnector : monitorSet) {
664 ticks = holdTime.get(nodeConnector);
665 holdTime.put(nodeConnector, ++ticks);
666 if (ticks >= discoveryTimeoutTicks) {
668 removeSet.add(nodeConnector);
669 logger.trace("Discovery timeout {}", nodeConnector);
674 for (NodeConnector nodeConnector : removeSet) {
675 removeEdge(nodeConnector);
678 Set<NodeConnector> retrySet = new HashSet<NodeConnector>();
679 Set<NodeConnector> ncSet = elapsedTime.keySet();
680 if ((ncSet != null) && (ncSet.size() > 0)) {
681 for (NodeConnector nodeConnector : ncSet) {
682 ticks = elapsedTime.get(nodeConnector);
683 elapsedTime.put(nodeConnector, ++ticks);
684 if (ticks >= discoveryThresholdTicks) {
685 retrySet.add(nodeConnector);
689 for (NodeConnector nodeConnector : retrySet) {
690 // Allow one more retry
691 elapsedTime.remove(nodeConnector);
692 if (connectionOutService.isLocal(nodeConnector.getNode())) {
693 transmitQ.add(nodeConnector);
699 private void checkAging() {
700 if (!discoveryAgingEnabled) {
704 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
707 Set<NodeConnector> agingSet = agingMap.keySet();
708 if (agingSet != null) {
709 for (NodeConnector nodeConnector : agingSet) {
710 ticks = agingMap.get(nodeConnector);
711 agingMap.put(nodeConnector, ++ticks);
712 if (ticks > discoveryAgeoutTicks) {
714 removeSet.add(nodeConnector);
715 logger.trace("Discovery age out {}", nodeConnector);
720 for (NodeConnector nodeConnector : removeSet) {
721 removeProdEdge(nodeConnector);
725 private void doDiscovery() {
726 if (++discoveryTimerTickCount <= discoveryBatchPauseTicks) {
727 for (NodeConnector nodeConnector : getWorkingSet()) {
728 if (connectionOutService.isLocal(nodeConnector.getNode())) {
729 transmitQ.add(nodeConnector);
730 // Move to staging area after it's served
731 if (!stagingList.contains(nodeConnector)) {
732 stagingList.add(nodeConnector);
736 } else if (discoveryTimerTickCount >= discoveryBatchRestartTicks) {
737 discoveryTimerTickCount = 0;
738 for (NodeConnector nodeConnector : stagingList) {
739 if (!readyListLo.contains(nodeConnector)) {
740 readyListLo.add(nodeConnector);
743 stagingList.removeAll(readyListLo);
747 private void doConsistencyCheck() {
748 if (!discoveryConsistencyCheckEnabled) {
752 if (++discoveryConsistencyCheckTickCount % getDiscoveryConsistencyCheckInterval() != 0) {
756 discoveryConsistencyCheckCallingTimes++;
758 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
759 Set<NodeConnector> ncSet = edgeMap.keySet();
763 for (NodeConnector nodeConnector : ncSet) {
764 if (!isEnabled(nodeConnector)) {
765 removeSet.add(nodeConnector);
766 discoveryConsistencyCheckCorrected++;
767 logger.debug("ConsistencyChecker: remove disabled {}", nodeConnector);
771 if (!isTracked(nodeConnector)) {
772 stagingList.add(nodeConnector);
773 discoveryConsistencyCheckCorrected++;
774 logger.debug("ConsistencyChecker: add back untracked {}", nodeConnector);
779 for (NodeConnector nodeConnector : removeSet) {
780 removeEdge(nodeConnector, false);
783 // remove stale entries
785 for (NodeConnector nodeConnector : stagingList) {
786 if (!isEnabled(nodeConnector)) {
787 removeSet.add(nodeConnector);
788 discoveryConsistencyCheckCorrected++;
789 logger.debug("ConsistencyChecker: remove disabled {}", nodeConnector);
792 stagingList.removeAll(removeSet);
794 // Get a snapshot of all the existing switches
795 Map<Long, ISwitch> switches = this.controller.getSwitches();
796 for (ISwitch sw : switches.values()) {
797 for (OFPhysicalPort port : sw.getEnabledPorts()) {
798 Node node = NodeCreator.createOFNode(sw.getId());
799 NodeConnector nodeConnector = NodeConnectorCreator.createOFNodeConnector(port.getPortNumber(), node);
800 if (!isTracked(nodeConnector)) {
801 stagingList.add(nodeConnector);
802 discoveryConsistencyCheckCorrected++;
803 logger.debug("ConsistencyChecker: add back untracked {}", nodeConnector);
809 private void addEdge(Edge edge, Set<Property> props) {
814 NodeConnector src = edge.getTailNodeConnector();
815 NodeConnector dst = edge.getHeadNodeConnector();
816 if (!src.getType().equals(NodeConnector.NodeConnectorIDType.PRODUCTION)) {
817 holdTime.put(dst, 0);
819 agingMap.put(dst, 0);
821 elapsedTime.remove(src);
823 // fast discovery of the edge in reverse direction
824 if (!edgeMap.containsKey(dst) && !readyListHi.contains(dst) && !elapsedTime.keySet().contains(dst)) {
825 moveToReadyListHi(dst);
829 updateEdge(edge, UpdateType.ADDED, props);
830 logger.trace("Add edge {}", edge);
834 * Update Production Edge
837 * The Production Edge
839 * Properties associated with the edge
841 private void updateProdEdge(Edge edge, Set<Property> props) {
842 NodeConnector edgePort = edge.getHeadNodeConnector();
844 /* Do not update in case there is an existing OpenFlow link */
845 if (edgeMap.get(edgePort) != null) {
846 logger.trace("Discarded edge {} since there is an existing OF link {}", edge, edgeMap.get(edgePort));
850 /* Look for any existing Production Edge */
851 Edge oldEdge = prodMap.get(edgePort);
852 if (oldEdge == null) {
853 /* Let's add a new one */
854 addEdge(edge, props);
855 } else if (!edge.equals(oldEdge)) {
856 /* Remove the old one first */
857 removeProdEdge(oldEdge.getHeadNodeConnector());
858 /* Then add the new one */
859 addEdge(edge, props);
861 /* o/w, just reset the aging timer */
862 NodeConnector dst = edge.getHeadNodeConnector();
863 agingMap.put(dst, 0);
868 * Remove Production Edge for a given edge port
873 private void removeProdEdge(NodeConnector edgePort) {
874 agingMap.remove(edgePort);
877 Set<NodeConnector> prodKeySet = prodMap.keySet();
878 if ((prodKeySet != null) && (prodKeySet.contains(edgePort))) {
879 edge = prodMap.get(edgePort);
880 prodMap.remove(edgePort);
884 if (this.discoveryListener != null) {
885 this.discoveryListener.notifyEdge(edge, UpdateType.REMOVED, null);
887 logger.trace("Remove edge {}", edge);
891 * Remove OpenFlow edge
893 private void removeEdge(NodeConnector nodeConnector, boolean stillEnabled) {
894 if (nodeConnector == null) {
898 removeNodeConnector(nodeConnector);
902 stagingList.add(nodeConnector);
906 Set<NodeConnector> edgeKeySet = edgeMap.keySet();
907 if ((edgeKeySet != null) && (edgeKeySet.contains(nodeConnector))) {
908 edge = edgeMap.get(nodeConnector);
909 edgeMap.remove(nodeConnector);
913 if (this.discoveryListener != null) {
914 this.discoveryListener.notifyEdge(edge, UpdateType.REMOVED, null);
916 logger.trace("Remove {}", nodeConnector);
919 private void removeEdge(NodeConnector nodeConnector) {
920 removeEdge(nodeConnector, isEnabled(nodeConnector));
923 private void updateEdge(Edge edge, UpdateType type, Set<Property> props) {
924 if (discoveryListener == null) {
928 this.discoveryListener.notifyEdge(edge, type, props);
930 NodeConnector src = edge.getTailNodeConnector(), dst = edge.getHeadNodeConnector();
931 if (!src.getType().equals(NodeConnector.NodeConnectorIDType.PRODUCTION)) {
932 if (type == UpdateType.ADDED) {
933 edgeMap.put(dst, edge);
939 * Save Production edge into different DB keyed by the Edge port
941 if (type == UpdateType.ADDED) {
942 prodMap.put(dst, edge);
949 private void moveToReadyListHi(NodeConnector nodeConnector) {
950 if (readyListLo.contains(nodeConnector)) {
951 readyListLo.remove(nodeConnector);
952 } else if (stagingList.contains(nodeConnector)) {
953 stagingList.remove(nodeConnector);
955 readyListHi.add(nodeConnector);
958 private void registerWithOSGIConsole() {
959 BundleContext bundleContext = FrameworkUtil.getBundle(this.getClass()).getBundleContext();
960 bundleContext.registerService(CommandProvider.class.getName(), this, null);
963 private int getDiscoveryConsistencyCheckInterval() {
964 return discoveryConsistencyCheckMultiple * discoveryBatchRestartTicks;
968 public String getHelp() {
969 StringBuffer help = new StringBuffer();
970 help.append("---Topology Discovery---\n");
971 help.append("\t prlh - Print readyListHi entries\n");
972 help.append("\t prll - Print readyListLo entries\n");
973 help.append("\t psl - Print stagingList entries\n");
974 help.append("\t pht - Print hold time\n");
975 help.append("\t pet - Print elapsed time\n");
976 help.append("\t ptick - Print tick time in msec\n");
977 help.append("\t pcc - Print CC info\n");
978 help.append("\t psize - Print sizes of all the lists\n");
979 help.append("\t ptm - Print timeout info\n");
980 help.append("\t ecc - Enable CC\n");
981 help.append("\t dcc - Disable CC\n");
982 help.append("\t scc [multiple] - Set/show CC multiple and interval\n");
983 help.append("\t sports [ports] - Set/show max ports per batch\n");
984 help.append("\t spause [ticks] - Set/show pause period\n");
985 help.append("\t sdi [ticks] - Set/show discovery interval in ticks\n");
986 help.append("\t addsw <swid> - Add a switch\n");
987 help.append("\t remsw <swid> - Remove a switch\n");
988 help.append("\t page - Print aging info\n");
989 help.append("\t sage - Set/Show aging time limit\n");
990 help.append("\t eage - Enable aging\n");
991 help.append("\t dage - Disable aging\n");
992 help.append("\t pthrot - Print throttling\n");
993 help.append("\t ethrot - Enable throttling\n");
994 help.append("\t dthrot - Disable throttling\n");
995 help.append("\t psnp - Print LLDP snooping\n");
996 help.append("\t esnp <all|nodeConnector> - Enable LLDP snooping\n");
997 help.append("\t dsnp <all|nodeConnector> - Disable LLDP snooping\n");
998 return help.toString();
1001 private List<NodeConnector> sortList(Collection<NodeConnector> ncs) {
1002 List<String> ncStrArray = new ArrayList<String>();
1003 for (NodeConnector nc : ncs) {
1004 ncStrArray.add(nc.toString());
1006 Collections.sort(ncStrArray);
1008 List<NodeConnector> sortedNodeConnectors = new ArrayList<NodeConnector>();
1009 for (String ncStr : ncStrArray) {
1010 sortedNodeConnectors.add(NodeConnector.fromString(ncStr));
1013 return sortedNodeConnectors;
1016 public void _prlh(CommandInterpreter ci) {
1017 ci.println("readyListHi\n");
1018 for (NodeConnector nodeConnector : sortList(readyListHi)) {
1019 if (nodeConnector == null) {
1022 ci.println(nodeConnector);
1024 ci.println("Total number of Node Connectors: " + readyListHi.size());
1027 public void _prll(CommandInterpreter ci) {
1028 ci.println("readyListLo\n");
1029 for (NodeConnector nodeConnector : sortList(readyListLo)) {
1030 if (nodeConnector == null) {
1033 ci.println(nodeConnector);
1035 ci.println("Total number of Node Connectors: " + readyListLo.size());
1038 public void _psl(CommandInterpreter ci) {
1039 ci.println("stagingList\n");
1040 for (NodeConnector nodeConnector : sortList(stagingList)) {
1041 if (nodeConnector == null) {
1044 ci.println(nodeConnector);
1046 ci.println("Total number of Node Connectors: " + stagingList.size());
1049 public void _pht(CommandInterpreter ci) {
1050 ci.println(" NodeConnector Last rx LLDP (sec)");
1051 for (ConcurrentMap.Entry<NodeConnector, Integer> entry: holdTime.entrySet()) {
1052 ci.println(entry.getKey() + "\t\t" + entry.getValue() * (discoveryTimerTick / 1000));
1054 ci.println("\nSize: " + holdTime.size() + "\tTimeout: " + discoveryTimeoutTicks * (discoveryTimerTick / 1000)
1058 public void _pet(CommandInterpreter ci) {
1059 ci.println(" NodeConnector Elapsed Time (sec)");
1060 for (ConcurrentMap.Entry<NodeConnector, Integer> entry: elapsedTime.entrySet()) {
1061 ci.println(entry.getKey() + "\t\t" + entry.getValue() * (discoveryTimerTick / 1000));
1063 ci.println("\nSize: " + elapsedTime.size() + "\tThreshold: " + DiscoveryPeriod.THRESHOLD.getTime() + " sec");
1066 public void _ptick(CommandInterpreter ci) {
1067 ci.println("Current timer is " + discoveryTimerTick + " msec per tick");
1070 public void _pcc(CommandInterpreter ci) {
1071 if (discoveryConsistencyCheckEnabled) {
1072 ci.println("ConsistencyChecker is currently enabled");
1074 ci.println("ConsistencyChecker is currently disabled");
1076 ci.println("Interval " + getDiscoveryConsistencyCheckInterval());
1077 ci.println("Multiple " + discoveryConsistencyCheckMultiple);
1078 ci.println("Number of times called " + discoveryConsistencyCheckCallingTimes);
1079 ci.println("Corrected count " + discoveryConsistencyCheckCorrected);
1082 public void _ptm(CommandInterpreter ci) {
1083 ci.println("Timeout " + discoveryTimeoutTicks + " ticks, " + discoveryTimerTick / 1000 + " sec per tick.");
1086 public void _psize(CommandInterpreter ci) {
1087 ci.println("readyListLo size " + readyListLo.size() + "\n" + "readyListHi size " + readyListHi.size() + "\n"
1088 + "stagingList size " + stagingList.size() + "\n" + "holdTime size " + holdTime.size() + "\n"
1089 + "edgeMap size " + edgeMap.size() + "\n" + "prodMap size " + prodMap.size() + "\n" + "agingMap size "
1090 + agingMap.size() + "\n" + "elapsedTime size " + elapsedTime.size());
1093 public void _page(CommandInterpreter ci) {
1094 if (this.discoveryAgingEnabled) {
1095 ci.println("Aging is enabled");
1097 ci.println("Aging is disabled");
1099 ci.println("Current aging time limit " + this.discoveryAgeoutTicks);
1101 ci.println(" Edge Aging ");
1102 Collection<Edge> prodSet = prodMap.values();
1103 if (prodSet == null) {
1106 for (Edge edge : prodSet) {
1107 Integer aging = agingMap.get(edge.getHeadNodeConnector());
1108 if (aging != null) {
1109 ci.println(edge + " " + aging);
1113 ci.println(" NodeConnector Edge ");
1114 Set<NodeConnector> keySet = prodMap.keySet();
1115 if (keySet == null) {
1118 for (NodeConnector nc : keySet) {
1119 ci.println(nc + " " + prodMap.get(nc));
1124 public void _sage(CommandInterpreter ci) {
1125 String val = ci.nextArgument();
1127 ci.println("Please enter aging time limit. Current value " + this.discoveryAgeoutTicks);
1131 this.discoveryAgeoutTicks = Integer.parseInt(val);
1132 } catch (Exception e) {
1133 ci.println("Please enter a valid number");
1138 public void _eage(CommandInterpreter ci) {
1139 this.discoveryAgingEnabled = true;
1140 ci.println("Aging is enabled");
1144 public void _dage(CommandInterpreter ci) {
1145 this.discoveryAgingEnabled = false;
1146 ci.println("Aging is disabled");
1150 public void _scc(CommandInterpreter ci) {
1151 String val = ci.nextArgument();
1153 ci.println("Please enter CC multiple. Current multiple " + discoveryConsistencyCheckMultiple
1154 + " (interval " + getDiscoveryConsistencyCheckInterval() + ") calling times "
1155 + discoveryConsistencyCheckCallingTimes);
1159 discoveryConsistencyCheckMultiple = Integer.parseInt(val);
1160 } catch (Exception e) {
1161 ci.println("Please enter a valid number");
1166 public void _ecc(CommandInterpreter ci) {
1167 this.discoveryConsistencyCheckEnabled = true;
1168 ci.println("ConsistencyChecker is enabled");
1172 public void _dcc(CommandInterpreter ci) {
1173 this.discoveryConsistencyCheckEnabled = false;
1174 ci.println("ConsistencyChecker is disabled");
1178 public void _psnp(CommandInterpreter ci) {
1179 if (this.discoverySnoopingEnabled) {
1180 ci.println("Discovery snooping is globally enabled");
1182 ci.println("Discovery snooping is globally disabled");
1185 ci.println("\nDiscovery snooping is locally disabled on these ports");
1186 for (NodeConnector nodeConnector : discoverySnoopingDisableList) {
1187 ci.println(nodeConnector);
1192 public void _esnp(CommandInterpreter ci) {
1193 String val = ci.nextArgument();
1196 ci.println("Usage: esnp <all|nodeConnector>");
1197 } else if (val.equalsIgnoreCase("all")) {
1198 this.discoverySnoopingEnabled = true;
1199 ci.println("Discovery snooping is globally enabled");
1201 NodeConnector nodeConnector = NodeConnector.fromString(val);
1202 if (nodeConnector != null) {
1203 discoverySnoopingDisableList.remove(nodeConnector);
1204 ci.println("Discovery snooping is locally enabled on port " + nodeConnector);
1206 ci.println("Entered invalid NodeConnector " + val);
1212 public void _dsnp(CommandInterpreter ci) {
1213 String val = ci.nextArgument();
1216 ci.println("Usage: dsnp <all|nodeConnector>");
1217 } else if (val.equalsIgnoreCase("all")) {
1218 this.discoverySnoopingEnabled = false;
1219 ci.println("Discovery snooping is globally disabled");
1221 NodeConnector nodeConnector = NodeConnector.fromString(val);
1222 if (nodeConnector != null) {
1223 discoverySnoopingDisableList.add(nodeConnector);
1224 ci.println("Discovery snooping is locally disabled on port " + nodeConnector);
1226 ci.println("Entered invalid NodeConnector " + val);
1232 public void _spause(CommandInterpreter ci) {
1233 String val = ci.nextArgument();
1234 String out = "Please enter pause period less than " + discoveryBatchRestartTicks + ". Current pause period is "
1235 + discoveryBatchPausePeriod + " ticks, pause at " + discoveryBatchPauseTicks + " ticks, "
1236 + discoveryTimerTick / 1000 + " sec per tick.";
1240 int pause = Integer.parseInt(val);
1241 if (pause < discoveryBatchRestartTicks) {
1242 discoveryBatchPausePeriod = pause;
1243 discoveryBatchPauseTicks = getDiscoveryPauseInterval();
1246 } catch (Exception e) {
1253 public void _sdi(CommandInterpreter ci) {
1254 String val = ci.nextArgument();
1255 String out = "Please enter discovery interval in ticks. Current value is " + discoveryBatchRestartTicks + " ticks, "
1256 + discoveryTimerTick / 1000 + " sec per tick.";
1261 Set<NodeConnector> monitorSet = holdTime.keySet();
1262 if (monitorSet != null) {
1263 for (NodeConnector nodeConnector : monitorSet) {
1264 holdTime.put(nodeConnector, 0);
1268 ticks = Integer.parseInt(val);
1269 DiscoveryPeriod.INTERVAL.setTick(ticks);
1270 discoveryBatchRestartTicks = getDiscoveryInterval();
1271 discoveryBatchPauseTicks = getDiscoveryPauseInterval();
1272 discoveryTimeoutTicks = getDiscoveryTimeout();
1274 } catch (Exception e) {
1280 public void _sports(CommandInterpreter ci) {
1281 String val = ci.nextArgument();
1283 ci.println("Please enter max ports per batch. Current value is " + discoveryBatchMaxPorts);
1287 discoveryBatchMaxPorts = Integer.parseInt(val);
1288 } catch (Exception e) {
1289 ci.println("Please enter a valid number");
1294 public void _addsw(CommandInterpreter ci) {
1295 String val = ci.nextArgument();
1298 sid = Long.parseLong(val);
1299 Node node = NodeCreator.createOFNode(sid);
1301 } catch (Exception e) {
1302 ci.println("Please enter a valid number");
1307 public void _remsw(CommandInterpreter ci) {
1308 String val = ci.nextArgument();
1311 sid = Long.parseLong(val);
1312 Node node = NodeCreator.createOFNode(sid);
1313 removeDiscovery(node);
1314 } catch (Exception e) {
1315 ci.println("Please enter a valid number");
1320 public void _pthrot(CommandInterpreter ci) {
1321 if (this.throttling) {
1322 ci.println("Throttling is enabled");
1324 ci.println("Throttling is disabled");
1328 public void _ethrot(CommandInterpreter ci) {
1329 this.throttling = true;
1330 ci.println("Throttling is enabled");
1334 public void _dthrot(CommandInterpreter ci) {
1335 this.throttling = false;
1336 ci.println("Throttling is disabled");
1341 public void updateNode(Node node, UpdateType type, Set<Property> props) {
1344 addNode(node, props);
1355 public void updateNodeConnector(NodeConnector nodeConnector, UpdateType type, Set<Property> props) {
1356 Config config = null;
1358 boolean enabled = false;
1360 for (Property prop : props) {
1361 if (prop.getName().equals(Config.ConfigPropName)) {
1362 config = (Config) prop;
1363 } else if (prop.getName().equals(State.StatePropName)) {
1364 state = (State) prop;
1367 enabled = ((config != null) && (config.getValue() == Config.ADMIN_UP) && (state != null) && (state.getValue() == State.EDGE_UP));
1372 addDiscovery(nodeConnector);
1373 logger.trace("ADDED enabled {}", nodeConnector);
1375 logger.trace("ADDED disabled {}", nodeConnector);
1380 addDiscovery(nodeConnector);
1381 logger.trace("CHANGED enabled {}", nodeConnector);
1383 removeDiscovery(nodeConnector);
1384 logger.trace("CHANGED disabled {}", nodeConnector);
1388 removeDiscovery(nodeConnector);
1389 logger.trace("REMOVED enabled {}", nodeConnector);
1396 public void addNode(Node node, Set<Property> props) {
1404 public void removeNode(Node node) {
1409 removeDiscovery(node);
1412 void setController(IController s) {
1413 this.controller = s;
1416 void unsetController(IController s) {
1417 if (this.controller == s) {
1418 this.controller = null;
1422 public void setInventoryProvider(IInventoryProvider service) {
1423 this.inventoryProvider = service;
1426 public void unsetInventoryProvider(IInventoryProvider service) {
1427 this.inventoryProvider = null;
1430 public void setIDataPacketMux(IDataPacketMux service) {
1431 this.iDataPacketMux = service;
1434 public void unsetIDataPacketMux(IDataPacketMux service) {
1435 if (this.iDataPacketMux == service) {
1436 this.iDataPacketMux = null;
1440 void setDiscoveryListener(IDiscoveryListener s) {
1441 this.discoveryListener = s;
1444 void unsetDiscoveryListener(IDiscoveryListener s) {
1445 if (this.discoveryListener == s) {
1446 this.discoveryListener = null;
1450 void setIPluginOutConnectionService(IPluginOutConnectionService s) {
1451 connectionOutService = s;
1454 void unsetIPluginOutConnectionService(IPluginOutConnectionService s) {
1455 if (connectionOutService == s) {
1456 connectionOutService = null;
1460 private void initDiscoveryPacket() {
1461 // Create LLDP ChassisID TLV
1462 chassisIdTlv = new LLDPTLV();
1463 chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue());
1465 // Create LLDP PortID TLV
1466 portIdTlv = new LLDPTLV();
1467 portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue());
1469 // Create LLDP TTL TLV
1470 byte[] ttl = new byte[] { (byte) 0, (byte) 120 };
1471 ttlTlv = new LLDPTLV();
1472 ttlTlv.setType(LLDPTLV.TLVType.TTL.getValue()).setLength((short) ttl.length).setValue(ttl);
1474 customTlv = new LLDPTLV();
1478 * Function called by the dependency manager when all the required
1479 * dependencies are satisfied
1483 logger.trace("Init called");
1485 transmitQ = new LinkedBlockingQueue<NodeConnector>();
1487 readyListHi = new CopyOnWriteArrayList<NodeConnector>();
1488 readyListLo = new CopyOnWriteArrayList<NodeConnector>();
1489 stagingList = new CopyOnWriteArrayList<NodeConnector>();
1490 holdTime = new ConcurrentHashMap<NodeConnector, Integer>();
1491 elapsedTime = new ConcurrentHashMap<NodeConnector, Integer>();
1492 edgeMap = new ConcurrentHashMap<NodeConnector, Edge>();
1493 agingMap = new ConcurrentHashMap<NodeConnector, Integer>();
1494 prodMap = new ConcurrentHashMap<NodeConnector, Edge>();
1495 discoverySnoopingDisableList = new CopyOnWriteArrayList<NodeConnector>();
1497 discoveryBatchRestartTicks = getDiscoveryInterval();
1498 discoveryBatchPauseTicks = getDiscoveryPauseInterval();
1499 discoveryTimeoutTicks = getDiscoveryTimeout();
1500 discoveryThresholdTicks = getDiscoveryThreshold();
1501 discoveryAgeoutTicks = getDiscoveryAgeout();
1502 discoveryConsistencyCheckTickCount = discoveryBatchPauseTicks;
1503 discoveryBatchMaxPorts = getDiscoveryBatchMaxPorts();
1505 discoveryTimer = new Timer("DiscoveryService");
1506 discoveryTimerTask = new DiscoveryTimerTask();
1508 transmitThread = new Thread(new DiscoveryTransmit(transmitQ));
1510 initDiscoveryPacket();
1512 registerWithOSGIConsole();
1516 * Function called by the dependency manager when at least one dependency
1517 * become unsatisfied or when the component is shutting down because for
1518 * example bundle is being stopped.
1530 discoveryTimer = null;
1531 discoveryTimerTask = null;
1532 transmitThread = null;
1536 * Function called by dependency manager after "init ()" is called and after
1537 * the services provided by the class are registered in the service registry
1541 discoveryTimer.schedule(discoveryTimerTask, discoveryTimerTick, discoveryTimerTick);
1542 transmitThread.start();
1546 * Function called after registering the service in OSGi service registry.
1549 /* get a snapshot of all the existing switches */
1554 * Function called by the dependency manager before the services exported by
1555 * the component are unregistered, this will be followed by a "destroy ()"
1560 shuttingDown = true;
1561 discoveryTimer.cancel();
1562 transmitThread.interrupt();
1566 public void tagUpdated(String containerName, Node n, short oldTag, short newTag, UpdateType t) {
1570 public void containerFlowUpdated(String containerName, ContainerFlow previousFlow, ContainerFlow currentFlow,
1575 public void nodeConnectorUpdated(String containerName, NodeConnector p, UpdateType t) {
1578 moveToReadyListHi(p);
1586 public void containerModeUpdated(UpdateType t) {
1590 private byte[] getSourceMACFromNodeID(String nodeId) {
1591 byte[] cid = HexEncode.bytesFromHexString(nodeId);
1592 byte[] sourceMac = new byte[6];
1593 int pos = cid.length - sourceMac.length;
1596 System.arraycopy(cid, pos, sourceMac, 0, sourceMac.length);
1602 private int getDiscoveryTicks(DiscoveryPeriod dp, String val) {
1609 dp.setTime(Integer.parseInt(val));
1610 } catch (Exception e) {
1614 return dp.getTick();
1618 * This method returns the interval which determines how often the discovery
1619 * packets will be sent.
1621 * @return The discovery interval in ticks
1623 private int getDiscoveryInterval() {
1624 String intvl = System.getProperty("of.discoveryInterval");
1625 return getDiscoveryTicks(DiscoveryPeriod.INTERVAL, intvl);
1629 * This method returns the timeout value in receiving subsequent discovery packets on a port.
1631 * @return The discovery timeout in ticks
1633 private int getDiscoveryTimeout() {
1634 String val = System.getProperty("of.discoveryTimeoutMultiple");
1639 multiple = Integer.parseInt(val);
1640 } catch (Exception e) {
1643 return getDiscoveryInterval() * multiple + 3;
1647 * This method returns the user configurable threshold value
1649 * @return The discovery threshold value in ticks
1651 private int getDiscoveryThreshold() {
1652 String val = System.getProperty("of.discoveryThreshold");
1653 return getDiscoveryTicks(DiscoveryPeriod.THRESHOLD, val);
1657 * This method returns the discovery entry aging time in ticks.
1659 * @return The aging time in ticks
1661 private int getDiscoveryAgeout() {
1662 return getDiscoveryTicks(DiscoveryPeriod.AGEOUT, null);
1666 * This method returns the pause interval
1668 * @return The pause interval in ticks
1670 private int getDiscoveryPauseInterval() {
1671 if (discoveryBatchRestartTicks > discoveryBatchPausePeriod) {
1672 return discoveryBatchRestartTicks - discoveryBatchPausePeriod;
1674 return discoveryBatchRestartTicks - 1;
1679 * This method returns the user configurable maximum number of ports handled
1680 * in one discovery batch.
1682 * @return The maximum number of ports
1684 private int getDiscoveryBatchMaxPorts() {
1685 String val = System.getProperty("of.discoveryBatchMaxPorts");
1690 ports = Integer.parseInt(val);
1691 } catch (Exception e) {