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());
563 List<OFPhysicalPort> ports = sw.getEnabledPorts();
567 for (OFPhysicalPort port : ports) {
568 NodeConnector nodeConnector = NodeConnectorCreator.createOFNodeConnector(port.getPortNumber(), node);
569 if (!readyListHi.contains(nodeConnector)) {
570 readyListHi.add(nodeConnector);
575 private void addDiscovery(NodeConnector nodeConnector) {
576 if (isTracked(nodeConnector)) {
580 readyListHi.add(nodeConnector);
583 private void removeNodeConnector(NodeConnector nodeConnector) {
584 readyListLo.remove(nodeConnector);
585 readyListHi.remove(nodeConnector);
586 stagingList.remove(nodeConnector);
587 holdTime.remove(nodeConnector);
588 elapsedTime.remove(nodeConnector);
591 private Set<NodeConnector> getRemoveSet(Collection<NodeConnector> c, Node node) {
592 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
596 for (NodeConnector nodeConnector : c) {
597 if (node.equals(nodeConnector.getNode())) {
598 removeSet.add(nodeConnector);
604 private void removeDiscovery(Node node) {
605 Set<NodeConnector> removeSet;
607 removeSet = getRemoveSet(edgeMap.keySet(), node);
608 NodeConnector peerConnector;
610 for (NodeConnector nodeConnector : removeSet) {
611 // get the peer for fast removal of the edge in reverse direction
612 peerConnector = null;
613 edge1 = edgeMap.get(nodeConnector);
615 edge2 = edgeMap.get(edge1.getTailNodeConnector());
616 if ((edge2 != null) && node.equals(edge2.getTailNodeConnector().getNode())) {
617 peerConnector = edge2.getHeadNodeConnector();
621 removeEdge(nodeConnector, false);
622 removeEdge(peerConnector, isEnabled(peerConnector));
625 removeSet = getRemoveSet(prodMap.keySet(), node);
626 for (NodeConnector nodeConnector : removeSet) {
627 removeProdEdge(nodeConnector);
630 removeSet = getRemoveSet(readyListHi, node);
631 readyListHi.removeAll(removeSet);
633 removeSet = getRemoveSet(readyListLo, node);
634 readyListLo.removeAll(removeSet);
636 removeSet = getRemoveSet(stagingList, node);
637 stagingList.removeAll(removeSet);
639 removeSet = getRemoveSet(holdTime.keySet(), node);
640 for (NodeConnector nodeConnector : removeSet) {
641 holdTime.remove(nodeConnector);
644 removeSet = getRemoveSet(elapsedTime.keySet(), node);
645 for (NodeConnector nodeConnector : removeSet) {
646 elapsedTime.remove(nodeConnector);
650 private void removeDiscovery(NodeConnector nodeConnector) {
651 removeNodeConnector(nodeConnector);
652 removeEdge(nodeConnector, false);
653 removeProdEdge(nodeConnector);
656 private void checkTimeout() {
657 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
660 Set<NodeConnector> monitorSet = holdTime.keySet();
661 if (monitorSet != null) {
662 for (NodeConnector nodeConnector : monitorSet) {
663 ticks = holdTime.get(nodeConnector);
664 holdTime.put(nodeConnector, ++ticks);
665 if (ticks >= discoveryTimeoutTicks) {
667 removeSet.add(nodeConnector);
668 logger.trace("Discovery timeout {}", nodeConnector);
673 for (NodeConnector nodeConnector : removeSet) {
674 removeEdge(nodeConnector);
677 Set<NodeConnector> retrySet = new HashSet<NodeConnector>();
678 Set<NodeConnector> ncSet = elapsedTime.keySet();
679 if ((ncSet != null) && (ncSet.size() > 0)) {
680 for (NodeConnector nodeConnector : ncSet) {
681 ticks = elapsedTime.get(nodeConnector);
682 elapsedTime.put(nodeConnector, ++ticks);
683 if (ticks >= discoveryThresholdTicks) {
684 retrySet.add(nodeConnector);
688 for (NodeConnector nodeConnector : retrySet) {
689 // Allow one more retry
690 elapsedTime.remove(nodeConnector);
691 if (connectionOutService.isLocal(nodeConnector.getNode())) {
692 transmitQ.add(nodeConnector);
698 private void checkAging() {
699 if (!discoveryAgingEnabled) {
703 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
706 Set<NodeConnector> agingSet = agingMap.keySet();
707 if (agingSet != null) {
708 for (NodeConnector nodeConnector : agingSet) {
709 ticks = agingMap.get(nodeConnector);
710 agingMap.put(nodeConnector, ++ticks);
711 if (ticks > discoveryAgeoutTicks) {
713 removeSet.add(nodeConnector);
714 logger.trace("Discovery age out {}", nodeConnector);
719 for (NodeConnector nodeConnector : removeSet) {
720 removeProdEdge(nodeConnector);
724 private void doDiscovery() {
725 if (++discoveryTimerTickCount <= discoveryBatchPauseTicks) {
726 for (NodeConnector nodeConnector : getWorkingSet()) {
727 if (connectionOutService.isLocal(nodeConnector.getNode())) {
728 transmitQ.add(nodeConnector);
729 // Move to staging area after it's served
730 if (!stagingList.contains(nodeConnector)) {
731 stagingList.add(nodeConnector);
735 } else if (discoveryTimerTickCount >= discoveryBatchRestartTicks) {
736 discoveryTimerTickCount = 0;
737 for (NodeConnector nodeConnector : stagingList) {
738 if (!readyListLo.contains(nodeConnector)) {
739 readyListLo.add(nodeConnector);
742 stagingList.removeAll(readyListLo);
746 private void doConsistencyCheck() {
747 if (!discoveryConsistencyCheckEnabled) {
751 if (++discoveryConsistencyCheckTickCount % getDiscoveryConsistencyCheckInterval() != 0) {
755 discoveryConsistencyCheckCallingTimes++;
757 Set<NodeConnector> removeSet = new HashSet<NodeConnector>();
758 Set<NodeConnector> ncSet = edgeMap.keySet();
762 for (NodeConnector nodeConnector : ncSet) {
763 if (!isEnabled(nodeConnector)) {
764 removeSet.add(nodeConnector);
765 discoveryConsistencyCheckCorrected++;
766 logger.debug("ConsistencyChecker: remove disabled {}", nodeConnector);
770 if (!isTracked(nodeConnector)) {
771 stagingList.add(nodeConnector);
772 discoveryConsistencyCheckCorrected++;
773 logger.debug("ConsistencyChecker: add back untracked {}", nodeConnector);
778 for (NodeConnector nodeConnector : removeSet) {
779 removeEdge(nodeConnector, false);
782 // remove stale entries
784 for (NodeConnector nodeConnector : stagingList) {
785 if (!isEnabled(nodeConnector)) {
786 removeSet.add(nodeConnector);
787 discoveryConsistencyCheckCorrected++;
788 logger.debug("ConsistencyChecker: remove disabled {}", nodeConnector);
791 stagingList.removeAll(removeSet);
793 // Get a snapshot of all the existing switches
794 Map<Long, ISwitch> switches = this.controller.getSwitches();
795 for (ISwitch sw : switches.values()) {
796 for (OFPhysicalPort port : sw.getEnabledPorts()) {
797 Node node = NodeCreator.createOFNode(sw.getId());
798 NodeConnector nodeConnector = NodeConnectorCreator.createOFNodeConnector(port.getPortNumber(), node);
799 if (!isTracked(nodeConnector)) {
800 stagingList.add(nodeConnector);
801 discoveryConsistencyCheckCorrected++;
802 logger.debug("ConsistencyChecker: add back untracked {}", nodeConnector);
808 private void addEdge(Edge edge, Set<Property> props) {
813 NodeConnector src = edge.getTailNodeConnector();
814 NodeConnector dst = edge.getHeadNodeConnector();
815 if (!src.getType().equals(NodeConnector.NodeConnectorIDType.PRODUCTION)) {
816 holdTime.put(dst, 0);
818 agingMap.put(dst, 0);
820 elapsedTime.remove(src);
822 // fast discovery of the edge in reverse direction
823 if (!edgeMap.containsKey(dst) && !readyListHi.contains(dst) && !elapsedTime.keySet().contains(dst)) {
824 moveToReadyListHi(dst);
828 updateEdge(edge, UpdateType.ADDED, props);
829 logger.trace("Add edge {}", edge);
833 * Update Production Edge
836 * The Production Edge
838 * Properties associated with the edge
840 private void updateProdEdge(Edge edge, Set<Property> props) {
841 NodeConnector edgePort = edge.getHeadNodeConnector();
843 /* Do not update in case there is an existing OpenFlow link */
844 if (edgeMap.get(edgePort) != null) {
845 logger.trace("Discarded edge {} since there is an existing OF link {}", edge, edgeMap.get(edgePort));
849 /* Look for any existing Production Edge */
850 Edge oldEdge = prodMap.get(edgePort);
851 if (oldEdge == null) {
852 /* Let's add a new one */
853 addEdge(edge, props);
854 } else if (!edge.equals(oldEdge)) {
855 /* Remove the old one first */
856 removeProdEdge(oldEdge.getHeadNodeConnector());
857 /* Then add the new one */
858 addEdge(edge, props);
860 /* o/w, just reset the aging timer */
861 NodeConnector dst = edge.getHeadNodeConnector();
862 agingMap.put(dst, 0);
867 * Remove Production Edge for a given edge port
872 private void removeProdEdge(NodeConnector edgePort) {
873 agingMap.remove(edgePort);
876 Set<NodeConnector> prodKeySet = prodMap.keySet();
877 if ((prodKeySet != null) && (prodKeySet.contains(edgePort))) {
878 edge = prodMap.get(edgePort);
879 prodMap.remove(edgePort);
883 if (this.discoveryListener != null) {
884 this.discoveryListener.notifyEdge(edge, UpdateType.REMOVED, null);
886 logger.trace("Remove edge {}", edge);
890 * Remove OpenFlow edge
892 private void removeEdge(NodeConnector nodeConnector, boolean stillEnabled) {
893 if (nodeConnector == null) {
897 removeNodeConnector(nodeConnector);
901 stagingList.add(nodeConnector);
905 Set<NodeConnector> edgeKeySet = edgeMap.keySet();
906 if ((edgeKeySet != null) && (edgeKeySet.contains(nodeConnector))) {
907 edge = edgeMap.get(nodeConnector);
908 edgeMap.remove(nodeConnector);
912 if (this.discoveryListener != null) {
913 this.discoveryListener.notifyEdge(edge, UpdateType.REMOVED, null);
915 logger.trace("Remove {}", nodeConnector);
918 private void removeEdge(NodeConnector nodeConnector) {
919 removeEdge(nodeConnector, isEnabled(nodeConnector));
922 private void updateEdge(Edge edge, UpdateType type, Set<Property> props) {
923 if (discoveryListener == null) {
927 this.discoveryListener.notifyEdge(edge, type, props);
929 NodeConnector src = edge.getTailNodeConnector(), dst = edge.getHeadNodeConnector();
930 if (!src.getType().equals(NodeConnector.NodeConnectorIDType.PRODUCTION)) {
931 if (type == UpdateType.ADDED) {
932 edgeMap.put(dst, edge);
938 * Save Production edge into different DB keyed by the Edge port
940 if (type == UpdateType.ADDED) {
941 prodMap.put(dst, edge);
948 private void moveToReadyListHi(NodeConnector nodeConnector) {
949 if (readyListLo.contains(nodeConnector)) {
950 readyListLo.remove(nodeConnector);
951 } else if (stagingList.contains(nodeConnector)) {
952 stagingList.remove(nodeConnector);
954 readyListHi.add(nodeConnector);
957 private void registerWithOSGIConsole() {
958 BundleContext bundleContext = FrameworkUtil.getBundle(this.getClass()).getBundleContext();
959 bundleContext.registerService(CommandProvider.class.getName(), this, null);
962 private int getDiscoveryConsistencyCheckInterval() {
963 return discoveryConsistencyCheckMultiple * discoveryBatchRestartTicks;
967 public String getHelp() {
968 StringBuffer help = new StringBuffer();
969 help.append("---Topology Discovery---\n");
970 help.append("\t prlh - Print readyListHi entries\n");
971 help.append("\t prll - Print readyListLo entries\n");
972 help.append("\t psl - Print stagingList entries\n");
973 help.append("\t pht - Print hold time\n");
974 help.append("\t pet - Print elapsed time\n");
975 help.append("\t ptick - Print tick time in msec\n");
976 help.append("\t pcc - Print CC info\n");
977 help.append("\t psize - Print sizes of all the lists\n");
978 help.append("\t ptm - Print timeout info\n");
979 help.append("\t ecc - Enable CC\n");
980 help.append("\t dcc - Disable CC\n");
981 help.append("\t scc [multiple] - Set/show CC multiple and interval\n");
982 help.append("\t sports [ports] - Set/show max ports per batch\n");
983 help.append("\t spause [ticks] - Set/show pause period\n");
984 help.append("\t sdi [ticks] - Set/show discovery interval in ticks\n");
985 help.append("\t addsw <swid> - Add a switch\n");
986 help.append("\t remsw <swid> - Remove a switch\n");
987 help.append("\t page - Print aging info\n");
988 help.append("\t sage - Set/Show aging time limit\n");
989 help.append("\t eage - Enable aging\n");
990 help.append("\t dage - Disable aging\n");
991 help.append("\t pthrot - Print throttling\n");
992 help.append("\t ethrot - Enable throttling\n");
993 help.append("\t dthrot - Disable throttling\n");
994 help.append("\t psnp - Print LLDP snooping\n");
995 help.append("\t esnp <all|nodeConnector> - Enable LLDP snooping\n");
996 help.append("\t dsnp <all|nodeConnector> - Disable LLDP snooping\n");
997 return help.toString();
1000 private List<NodeConnector> sortList(Collection<NodeConnector> ncs) {
1001 List<String> ncStrArray = new ArrayList<String>();
1002 for (NodeConnector nc : ncs) {
1003 ncStrArray.add(nc.toString());
1005 Collections.sort(ncStrArray);
1007 List<NodeConnector> sortedNodeConnectors = new ArrayList<NodeConnector>();
1008 for (String ncStr : ncStrArray) {
1009 sortedNodeConnectors.add(NodeConnector.fromString(ncStr));
1012 return sortedNodeConnectors;
1015 public void _prlh(CommandInterpreter ci) {
1016 ci.println("readyListHi\n");
1017 for (NodeConnector nodeConnector : sortList(readyListHi)) {
1018 if (nodeConnector == null) {
1021 ci.println(nodeConnector);
1023 ci.println("Total number of Node Connectors: " + readyListHi.size());
1026 public void _prll(CommandInterpreter ci) {
1027 ci.println("readyListLo\n");
1028 for (NodeConnector nodeConnector : sortList(readyListLo)) {
1029 if (nodeConnector == null) {
1032 ci.println(nodeConnector);
1034 ci.println("Total number of Node Connectors: " + readyListLo.size());
1037 public void _psl(CommandInterpreter ci) {
1038 ci.println("stagingList\n");
1039 for (NodeConnector nodeConnector : sortList(stagingList)) {
1040 if (nodeConnector == null) {
1043 ci.println(nodeConnector);
1045 ci.println("Total number of Node Connectors: " + stagingList.size());
1048 public void _pht(CommandInterpreter ci) {
1049 ci.println(" NodeConnector Last rx LLDP (sec)");
1050 for (ConcurrentMap.Entry<NodeConnector, Integer> entry: holdTime.entrySet()) {
1051 ci.println(entry.getKey() + "\t\t" + entry.getValue() * (discoveryTimerTick / 1000));
1053 ci.println("\nSize: " + holdTime.size() + "\tTimeout: " + discoveryTimeoutTicks * (discoveryTimerTick / 1000)
1057 public void _pet(CommandInterpreter ci) {
1058 ci.println(" NodeConnector Elapsed Time (sec)");
1059 for (ConcurrentMap.Entry<NodeConnector, Integer> entry: elapsedTime.entrySet()) {
1060 ci.println(entry.getKey() + "\t\t" + entry.getValue() * (discoveryTimerTick / 1000));
1062 ci.println("\nSize: " + elapsedTime.size() + "\tThreshold: " + DiscoveryPeriod.THRESHOLD.getTime() + " sec");
1065 public void _ptick(CommandInterpreter ci) {
1066 ci.println("Current timer is " + discoveryTimerTick + " msec per tick");
1069 public void _pcc(CommandInterpreter ci) {
1070 if (discoveryConsistencyCheckEnabled) {
1071 ci.println("ConsistencyChecker is currently enabled");
1073 ci.println("ConsistencyChecker is currently disabled");
1075 ci.println("Interval " + getDiscoveryConsistencyCheckInterval());
1076 ci.println("Multiple " + discoveryConsistencyCheckMultiple);
1077 ci.println("Number of times called " + discoveryConsistencyCheckCallingTimes);
1078 ci.println("Corrected count " + discoveryConsistencyCheckCorrected);
1081 public void _ptm(CommandInterpreter ci) {
1082 ci.println("Timeout " + discoveryTimeoutTicks + " ticks, " + discoveryTimerTick / 1000 + " sec per tick.");
1085 public void _psize(CommandInterpreter ci) {
1086 ci.println("readyListLo size " + readyListLo.size() + "\n" + "readyListHi size " + readyListHi.size() + "\n"
1087 + "stagingList size " + stagingList.size() + "\n" + "holdTime size " + holdTime.size() + "\n"
1088 + "edgeMap size " + edgeMap.size() + "\n" + "prodMap size " + prodMap.size() + "\n" + "agingMap size "
1089 + agingMap.size() + "\n" + "elapsedTime size " + elapsedTime.size());
1092 public void _page(CommandInterpreter ci) {
1093 if (this.discoveryAgingEnabled) {
1094 ci.println("Aging is enabled");
1096 ci.println("Aging is disabled");
1098 ci.println("Current aging time limit " + this.discoveryAgeoutTicks);
1100 ci.println(" Edge Aging ");
1101 Collection<Edge> prodSet = prodMap.values();
1102 if (prodSet == null) {
1105 for (Edge edge : prodSet) {
1106 Integer aging = agingMap.get(edge.getHeadNodeConnector());
1107 if (aging != null) {
1108 ci.println(edge + " " + aging);
1112 ci.println(" NodeConnector Edge ");
1113 Set<NodeConnector> keySet = prodMap.keySet();
1114 if (keySet == null) {
1117 for (NodeConnector nc : keySet) {
1118 ci.println(nc + " " + prodMap.get(nc));
1123 public void _sage(CommandInterpreter ci) {
1124 String val = ci.nextArgument();
1126 ci.println("Please enter aging time limit. Current value " + this.discoveryAgeoutTicks);
1130 this.discoveryAgeoutTicks = Integer.parseInt(val);
1131 } catch (Exception e) {
1132 ci.println("Please enter a valid number");
1137 public void _eage(CommandInterpreter ci) {
1138 this.discoveryAgingEnabled = true;
1139 ci.println("Aging is enabled");
1143 public void _dage(CommandInterpreter ci) {
1144 this.discoveryAgingEnabled = false;
1145 ci.println("Aging is disabled");
1149 public void _scc(CommandInterpreter ci) {
1150 String val = ci.nextArgument();
1152 ci.println("Please enter CC multiple. Current multiple " + discoveryConsistencyCheckMultiple
1153 + " (interval " + getDiscoveryConsistencyCheckInterval() + ") calling times "
1154 + discoveryConsistencyCheckCallingTimes);
1158 discoveryConsistencyCheckMultiple = Integer.parseInt(val);
1159 } catch (Exception e) {
1160 ci.println("Please enter a valid number");
1165 public void _ecc(CommandInterpreter ci) {
1166 this.discoveryConsistencyCheckEnabled = true;
1167 ci.println("ConsistencyChecker is enabled");
1171 public void _dcc(CommandInterpreter ci) {
1172 this.discoveryConsistencyCheckEnabled = false;
1173 ci.println("ConsistencyChecker is disabled");
1177 public void _psnp(CommandInterpreter ci) {
1178 if (this.discoverySnoopingEnabled) {
1179 ci.println("Discovery snooping is globally enabled");
1181 ci.println("Discovery snooping is globally disabled");
1184 ci.println("\nDiscovery snooping is locally disabled on these ports");
1185 for (NodeConnector nodeConnector : discoverySnoopingDisableList) {
1186 ci.println(nodeConnector);
1191 public void _esnp(CommandInterpreter ci) {
1192 String val = ci.nextArgument();
1195 ci.println("Usage: esnp <all|nodeConnector>");
1196 } else if (val.equalsIgnoreCase("all")) {
1197 this.discoverySnoopingEnabled = true;
1198 ci.println("Discovery snooping is globally enabled");
1200 NodeConnector nodeConnector = NodeConnector.fromString(val);
1201 if (nodeConnector != null) {
1202 discoverySnoopingDisableList.remove(nodeConnector);
1203 ci.println("Discovery snooping is locally enabled on port " + nodeConnector);
1205 ci.println("Entered invalid NodeConnector " + val);
1211 public void _dsnp(CommandInterpreter ci) {
1212 String val = ci.nextArgument();
1215 ci.println("Usage: dsnp <all|nodeConnector>");
1216 } else if (val.equalsIgnoreCase("all")) {
1217 this.discoverySnoopingEnabled = false;
1218 ci.println("Discovery snooping is globally disabled");
1220 NodeConnector nodeConnector = NodeConnector.fromString(val);
1221 if (nodeConnector != null) {
1222 discoverySnoopingDisableList.add(nodeConnector);
1223 ci.println("Discovery snooping is locally disabled on port " + nodeConnector);
1225 ci.println("Entered invalid NodeConnector " + val);
1231 public void _spause(CommandInterpreter ci) {
1232 String val = ci.nextArgument();
1233 String out = "Please enter pause period less than " + discoveryBatchRestartTicks + ". Current pause period is "
1234 + discoveryBatchPausePeriod + " ticks, pause at " + discoveryBatchPauseTicks + " ticks, "
1235 + discoveryTimerTick / 1000 + " sec per tick.";
1239 int pause = Integer.parseInt(val);
1240 if (pause < discoveryBatchRestartTicks) {
1241 discoveryBatchPausePeriod = pause;
1242 discoveryBatchPauseTicks = getDiscoveryPauseInterval();
1245 } catch (Exception e) {
1252 public void _sdi(CommandInterpreter ci) {
1253 String val = ci.nextArgument();
1254 String out = "Please enter discovery interval in ticks. Current value is " + discoveryBatchRestartTicks + " ticks, "
1255 + discoveryTimerTick / 1000 + " sec per tick.";
1260 Set<NodeConnector> monitorSet = holdTime.keySet();
1261 if (monitorSet != null) {
1262 for (NodeConnector nodeConnector : monitorSet) {
1263 holdTime.put(nodeConnector, 0);
1267 ticks = Integer.parseInt(val);
1268 DiscoveryPeriod.INTERVAL.setTick(ticks);
1269 discoveryBatchRestartTicks = getDiscoveryInterval();
1270 discoveryBatchPauseTicks = getDiscoveryPauseInterval();
1271 discoveryTimeoutTicks = getDiscoveryTimeout();
1273 } catch (Exception e) {
1279 public void _sports(CommandInterpreter ci) {
1280 String val = ci.nextArgument();
1282 ci.println("Please enter max ports per batch. Current value is " + discoveryBatchMaxPorts);
1286 discoveryBatchMaxPorts = Integer.parseInt(val);
1287 } catch (Exception e) {
1288 ci.println("Please enter a valid number");
1293 public void _addsw(CommandInterpreter ci) {
1294 String val = ci.nextArgument();
1297 sid = Long.parseLong(val);
1298 Node node = NodeCreator.createOFNode(sid);
1300 } catch (Exception e) {
1301 ci.println("Please enter a valid number");
1306 public void _remsw(CommandInterpreter ci) {
1307 String val = ci.nextArgument();
1310 sid = Long.parseLong(val);
1311 Node node = NodeCreator.createOFNode(sid);
1312 removeDiscovery(node);
1313 } catch (Exception e) {
1314 ci.println("Please enter a valid number");
1319 public void _pthrot(CommandInterpreter ci) {
1320 if (this.throttling) {
1321 ci.println("Throttling is enabled");
1323 ci.println("Throttling is disabled");
1327 public void _ethrot(CommandInterpreter ci) {
1328 this.throttling = true;
1329 ci.println("Throttling is enabled");
1333 public void _dthrot(CommandInterpreter ci) {
1334 this.throttling = false;
1335 ci.println("Throttling is disabled");
1340 public void updateNode(Node node, UpdateType type, Set<Property> props) {
1343 addNode(node, props);
1354 public void updateNodeConnector(NodeConnector nodeConnector, UpdateType type, Set<Property> props) {
1355 Config config = null;
1357 boolean enabled = false;
1359 for (Property prop : props) {
1360 if (prop.getName().equals(Config.ConfigPropName)) {
1361 config = (Config) prop;
1362 } else if (prop.getName().equals(State.StatePropName)) {
1363 state = (State) prop;
1366 enabled = ((config != null) && (config.getValue() == Config.ADMIN_UP) && (state != null) && (state.getValue() == State.EDGE_UP));
1371 addDiscovery(nodeConnector);
1372 logger.trace("ADDED enabled {}", nodeConnector);
1374 logger.trace("ADDED disabled {}", nodeConnector);
1379 addDiscovery(nodeConnector);
1380 logger.trace("CHANGED enabled {}", nodeConnector);
1382 removeDiscovery(nodeConnector);
1383 logger.trace("CHANGED disabled {}", nodeConnector);
1387 removeDiscovery(nodeConnector);
1388 logger.trace("REMOVED enabled {}", nodeConnector);
1395 public void addNode(Node node, Set<Property> props) {
1403 public void removeNode(Node node) {
1408 removeDiscovery(node);
1411 void setController(IController s) {
1412 this.controller = s;
1415 void unsetController(IController s) {
1416 if (this.controller == s) {
1417 this.controller = null;
1421 public void setInventoryProvider(IInventoryProvider service) {
1422 this.inventoryProvider = service;
1425 public void unsetInventoryProvider(IInventoryProvider service) {
1426 this.inventoryProvider = null;
1429 public void setIDataPacketMux(IDataPacketMux service) {
1430 this.iDataPacketMux = service;
1433 public void unsetIDataPacketMux(IDataPacketMux service) {
1434 if (this.iDataPacketMux == service) {
1435 this.iDataPacketMux = null;
1439 void setDiscoveryListener(IDiscoveryListener s) {
1440 this.discoveryListener = s;
1443 void unsetDiscoveryListener(IDiscoveryListener s) {
1444 if (this.discoveryListener == s) {
1445 this.discoveryListener = null;
1449 void setIPluginOutConnectionService(IPluginOutConnectionService s) {
1450 connectionOutService = s;
1453 void unsetIPluginOutConnectionService(IPluginOutConnectionService s) {
1454 if (connectionOutService == s) {
1455 connectionOutService = null;
1459 private void initDiscoveryPacket() {
1460 // Create LLDP ChassisID TLV
1461 chassisIdTlv = new LLDPTLV();
1462 chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue());
1464 // Create LLDP PortID TLV
1465 portIdTlv = new LLDPTLV();
1466 portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue());
1468 // Create LLDP TTL TLV
1469 byte[] ttl = new byte[] { (byte) 0, (byte) 120 };
1470 ttlTlv = new LLDPTLV();
1471 ttlTlv.setType(LLDPTLV.TLVType.TTL.getValue()).setLength((short) ttl.length).setValue(ttl);
1473 customTlv = new LLDPTLV();
1477 * Function called by the dependency manager when all the required
1478 * dependencies are satisfied
1482 logger.trace("Init called");
1484 transmitQ = new LinkedBlockingQueue<NodeConnector>();
1486 readyListHi = new CopyOnWriteArrayList<NodeConnector>();
1487 readyListLo = new CopyOnWriteArrayList<NodeConnector>();
1488 stagingList = new CopyOnWriteArrayList<NodeConnector>();
1489 holdTime = new ConcurrentHashMap<NodeConnector, Integer>();
1490 elapsedTime = new ConcurrentHashMap<NodeConnector, Integer>();
1491 edgeMap = new ConcurrentHashMap<NodeConnector, Edge>();
1492 agingMap = new ConcurrentHashMap<NodeConnector, Integer>();
1493 prodMap = new ConcurrentHashMap<NodeConnector, Edge>();
1494 discoverySnoopingDisableList = new CopyOnWriteArrayList<NodeConnector>();
1496 discoveryBatchRestartTicks = getDiscoveryInterval();
1497 discoveryBatchPauseTicks = getDiscoveryPauseInterval();
1498 discoveryTimeoutTicks = getDiscoveryTimeout();
1499 discoveryThresholdTicks = getDiscoveryThreshold();
1500 discoveryAgeoutTicks = getDiscoveryAgeout();
1501 discoveryConsistencyCheckTickCount = discoveryBatchPauseTicks;
1502 discoveryBatchMaxPorts = getDiscoveryBatchMaxPorts();
1504 discoveryTimer = new Timer("DiscoveryService");
1505 discoveryTimerTask = new DiscoveryTimerTask();
1507 transmitThread = new Thread(new DiscoveryTransmit(transmitQ));
1509 initDiscoveryPacket();
1511 registerWithOSGIConsole();
1515 * Function called by the dependency manager when at least one dependency
1516 * become unsatisfied or when the component is shutting down because for
1517 * example bundle is being stopped.
1529 discoveryTimer = null;
1530 discoveryTimerTask = null;
1531 transmitThread = null;
1535 * Function called by dependency manager after "init ()" is called and after
1536 * the services provided by the class are registered in the service registry
1540 discoveryTimer.schedule(discoveryTimerTask, discoveryTimerTick, discoveryTimerTick);
1541 transmitThread.start();
1545 * Function called after registering the service in OSGi service registry.
1548 /* get a snapshot of all the existing switches */
1553 * Function called by the dependency manager before the services exported by
1554 * the component are unregistered, this will be followed by a "destroy ()"
1559 shuttingDown = true;
1560 discoveryTimer.cancel();
1561 transmitThread.interrupt();
1565 public void tagUpdated(String containerName, Node n, short oldTag, short newTag, UpdateType t) {
1569 public void containerFlowUpdated(String containerName, ContainerFlow previousFlow, ContainerFlow currentFlow,
1574 public void nodeConnectorUpdated(String containerName, NodeConnector p, UpdateType t) {
1577 moveToReadyListHi(p);
1585 public void containerModeUpdated(UpdateType t) {
1589 private byte[] getSourceMACFromNodeID(String nodeId) {
1590 byte[] cid = HexEncode.bytesFromHexString(nodeId);
1591 byte[] sourceMac = new byte[6];
1592 int pos = cid.length - sourceMac.length;
1595 System.arraycopy(cid, pos, sourceMac, 0, sourceMac.length);
1601 private int getDiscoveryTicks(DiscoveryPeriod dp, String val) {
1608 dp.setTime(Integer.parseInt(val));
1609 } catch (Exception e) {
1613 return dp.getTick();
1617 * This method returns the interval which determines how often the discovery
1618 * packets will be sent.
1620 * @return The discovery interval in ticks
1622 private int getDiscoveryInterval() {
1623 String intvl = System.getProperty("of.discoveryInterval");
1624 return getDiscoveryTicks(DiscoveryPeriod.INTERVAL, intvl);
1628 * This method returns the timeout value in receiving subsequent discovery packets on a port.
1630 * @return The discovery timeout in ticks
1632 private int getDiscoveryTimeout() {
1633 String val = System.getProperty("of.discoveryTimeoutMultiple");
1638 multiple = Integer.parseInt(val);
1639 } catch (Exception e) {
1642 return getDiscoveryInterval() * multiple + 3;
1646 * This method returns the user configurable threshold value
1648 * @return The discovery threshold value in ticks
1650 private int getDiscoveryThreshold() {
1651 String val = System.getProperty("of.discoveryThreshold");
1652 return getDiscoveryTicks(DiscoveryPeriod.THRESHOLD, val);
1656 * This method returns the discovery entry aging time in ticks.
1658 * @return The aging time in ticks
1660 private int getDiscoveryAgeout() {
1661 return getDiscoveryTicks(DiscoveryPeriod.AGEOUT, null);
1665 * This method returns the pause interval
1667 * @return The pause interval in ticks
1669 private int getDiscoveryPauseInterval() {
1670 if (discoveryBatchRestartTicks > discoveryBatchPausePeriod) {
1671 return discoveryBatchRestartTicks - discoveryBatchPausePeriod;
1673 return discoveryBatchRestartTicks - 1;
1678 * This method returns the user configurable maximum number of ports handled
1679 * in one discovery batch.
1681 * @return The maximum number of ports
1683 private int getDiscoveryBatchMaxPorts() {
1684 String val = System.getProperty("of.discoveryBatchMaxPorts");
1689 ports = Integer.parseInt(val);
1690 } catch (Exception e) {