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.topologymanager.internal;
11 import java.io.FileNotFoundException;
12 import java.io.IOException;
13 import java.io.ObjectInputStream;
14 import java.util.ArrayList;
15 import java.util.Dictionary;
16 import java.util.EnumSet;
17 import java.util.HashMap;
18 import java.util.HashSet;
19 import java.util.Iterator;
20 import java.util.LinkedList;
21 import java.util.List;
24 import java.util.concurrent.BlockingQueue;
25 import java.util.concurrent.ConcurrentHashMap;
26 import java.util.concurrent.ConcurrentMap;
27 import java.util.concurrent.CopyOnWriteArraySet;
28 import java.util.concurrent.LinkedBlockingQueue;
30 import org.apache.commons.lang3.tuple.ImmutablePair;
31 import org.apache.felix.dm.Component;
32 import org.eclipse.osgi.framework.console.CommandInterpreter;
33 import org.eclipse.osgi.framework.console.CommandProvider;
34 import org.opendaylight.controller.clustering.services.CacheConfigException;
35 import org.opendaylight.controller.clustering.services.CacheExistException;
36 import org.opendaylight.controller.clustering.services.ICacheUpdateAware;
37 import org.opendaylight.controller.clustering.services.IClusterContainerServices;
38 import org.opendaylight.controller.clustering.services.IClusterServices;
39 import org.opendaylight.controller.configuration.IConfigurationContainerAware;
40 import org.opendaylight.controller.sal.core.Edge;
41 import org.opendaylight.controller.sal.core.Host;
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.TimeStamp;
46 import org.opendaylight.controller.sal.core.UpdateType;
47 import org.opendaylight.controller.sal.topology.IListenTopoUpdates;
48 import org.opendaylight.controller.sal.topology.ITopologyService;
49 import org.opendaylight.controller.sal.topology.TopoEdgeUpdate;
50 import org.opendaylight.controller.sal.utils.GlobalConstants;
51 import org.opendaylight.controller.sal.utils.IObjectReader;
52 import org.opendaylight.controller.sal.utils.ObjectReader;
53 import org.opendaylight.controller.sal.utils.ObjectWriter;
54 import org.opendaylight.controller.sal.utils.Status;
55 import org.opendaylight.controller.sal.utils.StatusCode;
56 import org.opendaylight.controller.switchmanager.ISwitchManager;
57 import org.opendaylight.controller.topologymanager.ITopologyManager;
58 import org.opendaylight.controller.topologymanager.ITopologyManagerAware;
59 import org.opendaylight.controller.topologymanager.ITopologyManagerClusterWideAware;
60 import org.opendaylight.controller.topologymanager.TopologyUserLinkConfig;
61 import org.osgi.framework.BundleContext;
62 import org.osgi.framework.FrameworkUtil;
63 import org.slf4j.Logger;
64 import org.slf4j.LoggerFactory;
67 * The class describes TopologyManager which is the central repository of the
68 * network topology. It provides service for applications to interact with
69 * topology database and notifies all the listeners of topology changes.
71 public class TopologyManagerImpl implements
72 ICacheUpdateAware<Object, Object>,
74 IConfigurationContainerAware,
78 protected static final String TOPOEDGESDB = "topologymanager.edgesDB";
79 protected static final String TOPOHOSTSDB = "topologymanager.hostsDB";
80 protected static final String TOPONODECONNECTORDB = "topologymanager.nodeConnectorDB";
81 protected static final String TOPOUSERLINKSDB = "topologymanager.userLinksDB";
82 private static final Logger log = LoggerFactory.getLogger(TopologyManagerImpl.class);
83 private ITopologyService topoService;
84 private IClusterContainerServices clusterContainerService;
85 private ISwitchManager switchManager;
86 // DB of all the Edges with properties which constitute our topology
87 private ConcurrentMap<Edge, Set<Property>> edgesDB;
88 // DB of all NodeConnector which are part of ISL Edges, meaning they
89 // are connected to another NodeConnector on the other side of an ISL link.
90 // NodeConnector of a Production Edge is not part of this DB.
91 private ConcurrentMap<NodeConnector, Set<Property>> nodeConnectorsDB;
92 // DB of all the NodeConnectors with an Host attached to it
93 private ConcurrentMap<NodeConnector, Set<ImmutablePair<Host, Set<Property>>>> hostsDB;
94 // Topology Manager Aware listeners
95 private Set<ITopologyManagerAware> topologyManagerAware = new CopyOnWriteArraySet<ITopologyManagerAware>();
96 // Topology Manager Aware listeners - for clusterwide updates
97 private Set<ITopologyManagerClusterWideAware> topologyManagerClusterWideAware =
98 new CopyOnWriteArraySet<ITopologyManagerClusterWideAware>();
99 private static String ROOT = GlobalConstants.STARTUPHOME.toString();
100 private String userLinksFileName;
101 private ConcurrentMap<String, TopologyUserLinkConfig> userLinksDB;
102 private BlockingQueue<TopoEdgeUpdate> notifyQ = new LinkedBlockingQueue<TopoEdgeUpdate>();
103 private volatile Boolean shuttingDown = false;
104 private Thread notifyThread;
107 void nonClusterObjectCreate() {
108 edgesDB = new ConcurrentHashMap<Edge, Set<Property>>();
109 hostsDB = new ConcurrentHashMap<NodeConnector, Set<ImmutablePair<Host, Set<Property>>>>();
110 nodeConnectorsDB = new ConcurrentHashMap<NodeConnector, Set<Property>>();
111 userLinksDB = new ConcurrentHashMap<String, TopologyUserLinkConfig>();
114 void setTopologyManagerAware(ITopologyManagerAware s) {
115 if (this.topologyManagerAware != null) {
116 log.debug("Adding ITopologyManagerAware: {}", s);
117 this.topologyManagerAware.add(s);
121 void unsetTopologyManagerAware(ITopologyManagerAware s) {
122 if (this.topologyManagerAware != null) {
123 log.debug("Removing ITopologyManagerAware: {}", s);
124 this.topologyManagerAware.remove(s);
128 void setTopologyManagerClusterWideAware(ITopologyManagerClusterWideAware s) {
129 if (this.topologyManagerClusterWideAware != null) {
130 log.debug("Adding ITopologyManagerClusterWideAware: {}", s);
131 this.topologyManagerClusterWideAware.add(s);
135 void unsetTopologyManagerClusterWideAware(ITopologyManagerClusterWideAware s) {
136 if (this.topologyManagerClusterWideAware != null) {
137 log.debug("Removing ITopologyManagerClusterWideAware: {}", s);
138 this.topologyManagerClusterWideAware.remove(s);
142 void setTopoService(ITopologyService s) {
143 log.debug("Adding ITopologyService: {}", s);
144 this.topoService = s;
147 void unsetTopoService(ITopologyService s) {
148 if (this.topoService == s) {
149 log.debug("Removing ITopologyService: {}", s);
150 this.topoService = null;
154 void setClusterContainerService(IClusterContainerServices s) {
155 log.debug("Cluster Service set");
156 this.clusterContainerService = s;
159 void unsetClusterContainerService(IClusterContainerServices s) {
160 if (this.clusterContainerService == s) {
161 log.debug("Cluster Service removed!");
162 this.clusterContainerService = null;
166 void setSwitchManager(ISwitchManager s) {
167 log.debug("Adding ISwitchManager: {}", s);
168 this.switchManager = s;
171 void unsetSwitchManager(ISwitchManager s) {
172 if (this.switchManager == s) {
173 log.debug("Removing ISwitchManager: {}", s);
174 this.switchManager = null;
179 * Function called by the dependency manager when all the required
180 * dependencies are satisfied
183 void init(Component c) {
186 String containerName = null;
187 Dictionary<?, ?> props = c.getServiceProperties();
189 containerName = (String) props.get("containerName");
191 // In the Global instance case the containerName is empty
192 containerName = "UNKNOWN";
195 userLinksFileName = ROOT + "userTopology_" + containerName + ".conf";
196 registerWithOSGIConsole();
198 // Restore the shuttingDown status on init of the component
199 shuttingDown = false;
200 notifyThread = new Thread(new TopologyNotify(notifyQ));
203 @SuppressWarnings({ "unchecked" })
204 private void allocateCaches() {
206 (ConcurrentMap<Edge, Set<Property>>) allocateCache(TOPOEDGESDB,EnumSet.of(IClusterServices.cacheMode.TRANSACTIONAL));
209 (ConcurrentMap<NodeConnector, Set<ImmutablePair<Host, Set<Property>>>>) allocateCache(TOPOHOSTSDB, EnumSet.of(IClusterServices.cacheMode.TRANSACTIONAL));
211 this.nodeConnectorsDB =
212 (ConcurrentMap<NodeConnector, Set<Property>>) allocateCache(
213 TOPONODECONNECTORDB, EnumSet.of(IClusterServices.cacheMode.TRANSACTIONAL));
215 (ConcurrentMap<String, TopologyUserLinkConfig>) allocateCache(
216 TOPOUSERLINKSDB, EnumSet.of(IClusterServices.cacheMode.TRANSACTIONAL));
219 private ConcurrentMap<?, ?> allocateCache(String cacheName, Set<IClusterServices.cacheMode> cacheModes) {
220 ConcurrentMap<?, ?> cache = null;
222 cache = this.clusterContainerService.createCache(cacheName, cacheModes);
223 } catch (CacheExistException e) {
224 log.debug(cacheName + " cache already exists - destroy and recreate if needed");
225 } catch (CacheConfigException e) {
226 log.error(cacheName + " cache configuration invalid - check cache mode");
231 @SuppressWarnings({ "unchecked" })
232 private void retrieveCaches() {
233 if (this.clusterContainerService == null) {
234 log.error("Cluster Services is null, can't retrieve caches.");
238 this.edgesDB = (ConcurrentMap<Edge, Set<Property>>) this.clusterContainerService.getCache(TOPOEDGESDB);
239 if (edgesDB == null) {
240 log.error("Failed to get cache for " + TOPOEDGESDB);
244 (ConcurrentMap<NodeConnector, Set<ImmutablePair<Host, Set<Property>>>>) this.clusterContainerService.getCache(TOPOHOSTSDB);
245 if (hostsDB == null) {
246 log.error("Failed to get cache for " + TOPOHOSTSDB);
249 this.nodeConnectorsDB =
250 (ConcurrentMap<NodeConnector, Set<Property>>) this.clusterContainerService.getCache(TOPONODECONNECTORDB);
251 if (nodeConnectorsDB == null) {
252 log.error("Failed to get cache for " + TOPONODECONNECTORDB);
256 (ConcurrentMap<String, TopologyUserLinkConfig>) this.clusterContainerService.getCache(TOPOUSERLINKSDB);
257 if (userLinksDB == null) {
258 log.error("Failed to get cache for " + TOPOUSERLINKSDB);
263 * Function called after the topology manager has registered the service in
264 * OSGi service registry.
268 // Start the batcher thread for the cluster wide topology updates
269 notifyThread.start();
270 // SollicitRefresh MUST be called here else if called at init
271 // time it may sollicit refresh too soon.
272 log.debug("Sollicit topology refresh");
273 topoService.sollicitRefresh();
278 notifyThread.interrupt();
282 * Function called by the dependency manager when at least one dependency
283 * become unsatisfied or when the component is shutting down because for
284 * example bundle is being stopped.
292 @SuppressWarnings("unchecked")
293 private void loadConfiguration() {
294 ObjectReader objReader = new ObjectReader();
295 ConcurrentMap<String, TopologyUserLinkConfig> confList =
296 (ConcurrentMap<String, TopologyUserLinkConfig>) objReader.read(this, userLinksFileName);
298 if (confList != null) {
299 for (TopologyUserLinkConfig conf : confList.values()) {
306 public Status saveConfig() {
307 return saveConfigInternal();
310 public Status saveConfigInternal() {
311 ObjectWriter objWriter = new ObjectWriter();
313 Status saveStatus = objWriter.write(
314 new ConcurrentHashMap<String, TopologyUserLinkConfig>(userLinksDB), userLinksFileName);
316 if (! saveStatus.isSuccess()) {
317 return new Status(StatusCode.INTERNALERROR, "Topology save failed: " + saveStatus.getDescription());
323 public Map<Node, Set<Edge>> getNodeEdges() {
324 if (this.edgesDB == null) {
328 Map<Node, Set<Edge>> res = new HashMap<Node, Set<Edge>>();
329 for (Edge edge : this.edgesDB.keySet()) {
330 // Lets analyze the tail
331 Node node = edge.getTailNodeConnector().getNode();
332 Set<Edge> nodeEdges = res.get(node);
333 if (nodeEdges == null) {
334 nodeEdges = new HashSet<Edge>();
335 res.put(node, nodeEdges);
339 // Lets analyze the head
340 node = edge.getHeadNodeConnector().getNode();
341 nodeEdges = res.get(node);
342 if (nodeEdges == null) {
343 nodeEdges = new HashSet<Edge>();
344 res.put(node, nodeEdges);
353 public boolean isInternal(NodeConnector p) {
354 if (this.nodeConnectorsDB == null) {
358 // This is an internal NodeConnector if is connected to
359 // another Node i.e it's part of the nodeConnectorsDB
360 return (this.nodeConnectorsDB.get(p) != null);
364 * This method returns true if the edge is an ISL link.
368 * @return true if it is an ISL link
370 public boolean isISLink(Edge e) {
371 return (!isProductionLink(e));
375 * This method returns true if the edge is a production link.
379 * @return true if it is a production link
381 public boolean isProductionLink(Edge e) {
382 return (e.getHeadNodeConnector().getType().equals(NodeConnector.NodeConnectorIDType.PRODUCTION)
383 || e.getTailNodeConnector().getType().equals(NodeConnector.NodeConnectorIDType.PRODUCTION));
387 * The Map returned is a copy of the current topology hence if the topology
388 * changes the copy doesn't
390 * @return A Map representing the current topology expressed as edges of the
394 public Map<Edge, Set<Property>> getEdges() {
395 if (this.edgesDB == null) {
399 Map<Edge, Set<Property>> edgeMap = new HashMap<Edge, Set<Property>>();
401 for (Map.Entry<Edge, Set<Property>> edgeEntry : edgesDB.entrySet()) {
402 // Sets of props are copied because the composition of
403 // those properties could change with time
404 props = new HashSet<Property>(edgeEntry.getValue());
405 // We can simply reuse the key because the object is
406 // immutable so doesn't really matter that we are
407 // referencing the only owned by a different table, the
408 // meaning is the same because doesn't change with time.
409 edgeMap.put(edgeEntry.getKey(), props);
416 public Set<NodeConnector> getNodeConnectorWithHost() {
417 if (this.hostsDB == null) {
421 return (new HashSet<NodeConnector>(this.hostsDB.keySet()));
425 public Map<Node, Set<NodeConnector>> getNodesWithNodeConnectorHost() {
426 if (this.hostsDB == null) {
429 HashMap<Node, Set<NodeConnector>> res = new HashMap<Node, Set<NodeConnector>>();
431 Set<NodeConnector> portSet;
432 for (NodeConnector nc : this.hostsDB.keySet()) {
434 portSet = res.get(node);
435 if (portSet == null) {
436 // Create the HashSet if null
437 portSet = new HashSet<NodeConnector>();
438 res.put(node, portSet);
441 // Keep updating the HashSet, given this is not a
442 // clustered map we can just update the set without
443 // worrying to update the hashmap.
451 public Host getHostAttachedToNodeConnector(NodeConnector port) {
452 List<Host> hosts = getHostsAttachedToNodeConnector(port);
453 if(hosts != null && !hosts.isEmpty()){
460 public List<Host> getHostsAttachedToNodeConnector(NodeConnector p) {
461 Set<ImmutablePair<Host, Set<Property>>> hosts;
462 if (this.hostsDB == null || (hosts = this.hostsDB.get(p)) == null) {
465 // create a list of hosts
466 List<Host> retHosts = new LinkedList<Host>();
467 for(ImmutablePair<Host, Set<Property>> host : hosts) {
468 retHosts.add(host.getLeft());
474 public void updateHostLink(NodeConnector port, Host h, UpdateType t, Set<Property> props) {
476 // Clone the property set in case non null else just
477 // create an empty one. Caches allocated via infinispan
478 // don't allow null values
480 props = new HashSet<Property>();
482 props = new HashSet<Property>(props);
484 ImmutablePair<Host, Set<Property>> thisHost = new ImmutablePair<Host, Set<Property>>(h, props);
487 Set<ImmutablePair<Host, Set<Property>>> hostSet = this.hostsDB.get(port);
488 if(hostSet == null) {
489 hostSet = new HashSet<ImmutablePair<Host, Set<Property>>>();
494 hostSet.add(thisHost);
495 this.hostsDB.put(port, hostSet);
498 hostSet.remove(thisHost);
499 if(hostSet.isEmpty()) {
500 //remove only if hasn't been concurrently modified
501 this.hostsDB.remove(port, hostSet);
503 this.hostsDB.put(port, hostSet);
509 private boolean headNodeConnectorExist(Edge e) {
511 * Only check the head end point which is supposed to be part of a
512 * network node we control (present in our inventory). If we checked the
513 * tail end point as well, we would not store the edges that connect to
514 * a non sdn enable port on a non sdn capable production switch. We want
515 * to be able to see these switches on the topology.
517 NodeConnector head = e.getHeadNodeConnector();
518 return (switchManager.doesNodeConnectorExist(head));
521 private TopoEdgeUpdate edgeUpdate(Edge e, UpdateType type, Set<Property> props) {
524 // Avoid redundant update as notifications trigger expensive tasks
525 if (edgesDB.containsKey(e)) {
526 log.trace("Skipping redundant edge addition: {}", e);
530 // Ensure that head node connector exists
531 if (!headNodeConnectorExist(e)) {
532 log.warn("Ignore edge that contains invalid node connector: {}", e);
536 // Make sure the props are non-null
538 props = new HashSet<Property>();
540 props = new HashSet<Property>(props);
543 //in case of node switch-over to a different cluster controller,
544 //let's retain edge props
545 Set<Property> currentProps = this.edgesDB.get(e);
546 if (currentProps != null){
547 props.addAll(currentProps);
550 // Now make sure there is the creation timestamp for the
551 // edge, if not there, stamp with the first update
552 boolean found_create = false;
553 for (Property prop : props) {
554 if (prop instanceof TimeStamp) {
555 TimeStamp t = (TimeStamp) prop;
556 if (t.getTimeStampName().equals("creation")) {
564 TimeStamp t = new TimeStamp(System.currentTimeMillis(), "creation");
568 // Now add this in the database eventually overriding
569 // something that may have been already existing
570 this.edgesDB.put(e, props);
572 // Now populate the DB of NodeConnectors
573 // NOTE WELL: properties are empty sets, not really needed
575 // The DB only contains ISL ports
577 this.nodeConnectorsDB.put(e.getHeadNodeConnector(), new HashSet<Property>(1));
578 this.nodeConnectorsDB.put(e.getTailNodeConnector(), new HashSet<Property>(1));
580 log.trace("Edge {} {}", e.toString(), type.name());
583 // Now remove the edge from edgesDB
584 this.edgesDB.remove(e);
586 // Now lets update the NodeConnectors DB, the assumption
587 // here is that two NodeConnector are exclusively
588 // connected by 1 and only 1 edge, this is reasonable in
589 // the same plug (virtual of phisical) we can assume two
590 // cables won't be plugged. This could break only in case
591 // of devices in the middle that acts as hubs, but it
592 // should be safe to assume that won't happen.
593 this.nodeConnectorsDB.remove(e.getHeadNodeConnector());
594 this.nodeConnectorsDB.remove(e.getTailNodeConnector());
595 log.trace("Edge {} {}", e.toString(), type.name());
598 Set<Property> oldProps = this.edgesDB.get(e);
600 // When property changes lets make sure we can change it
601 // all except the creation time stamp because that should
602 // be changed only when the edge is destroyed and created
604 TimeStamp timeStamp = null;
605 for (Property prop : oldProps) {
606 if (prop instanceof TimeStamp) {
607 TimeStamp tsProp = (TimeStamp) prop;
608 if (tsProp.getTimeStampName().equals("creation")) {
615 // Now lets make sure new properties are non-null
617 props = new HashSet<Property>();
619 // Copy the set so noone is going to change the content
620 props = new HashSet<Property>(props);
623 // Now lets remove the creation property if exist in the
625 for (Iterator<Property> i = props.iterator(); i.hasNext();) {
626 Property prop = i.next();
627 if (prop instanceof TimeStamp) {
628 TimeStamp t = (TimeStamp) prop;
629 if (t.getTimeStampName().equals("creation")) {
636 // Now lets add the creation timestamp in it
637 if (timeStamp != null) {
638 props.add(timeStamp);
642 this.edgesDB.put(e, props);
643 log.trace("Edge {} {}", e.toString(), type.name());
646 return new TopoEdgeUpdate(e, props, type);
650 public void edgeUpdate(List<TopoEdgeUpdate> topoedgeupdateList) {
651 List<TopoEdgeUpdate> teuList = new ArrayList<TopoEdgeUpdate>();
652 for (int i = 0; i < topoedgeupdateList.size(); i++) {
653 Edge e = topoedgeupdateList.get(i).getEdge();
654 Set<Property> p = topoedgeupdateList.get(i).getProperty();
655 UpdateType type = topoedgeupdateList.get(i).getUpdateType();
656 TopoEdgeUpdate teu = edgeUpdate(e, type, p);
662 if (!teuList.isEmpty()) {
663 // Now update the listeners
664 for (ITopologyManagerAware s : this.topologyManagerAware) {
666 s.edgeUpdate(teuList);
667 } catch (Exception exc) {
668 log.error("Exception on edge update:", exc);
674 private Edge getReverseLinkTuple(TopologyUserLinkConfig link) {
675 TopologyUserLinkConfig rLink = new TopologyUserLinkConfig(
676 link.getName(), link.getDstNodeConnector(), link.getSrcNodeConnector());
677 return getLinkTuple(rLink);
681 private Edge getLinkTuple(TopologyUserLinkConfig link) {
682 NodeConnector srcNodeConnector = NodeConnector.fromString(link.getSrcNodeConnector());
683 NodeConnector dstNodeConnector = NodeConnector.fromString(link.getDstNodeConnector());
685 return new Edge(srcNodeConnector, dstNodeConnector);
686 } catch (Exception e) {
692 public ConcurrentMap<String, TopologyUserLinkConfig> getUserLinks() {
693 return new ConcurrentHashMap<String, TopologyUserLinkConfig>(userLinksDB);
697 public Status addUserLink(TopologyUserLinkConfig userLink) {
698 if (!userLink.isValid()) {
699 return new Status(StatusCode.BADREQUEST,
700 "User link configuration invalid.");
702 userLink.setStatus(TopologyUserLinkConfig.STATUS.LINKDOWN);
704 //Check if this link already configured
705 //NOTE: infinispan cache doesn't support Map.containsValue()
706 // (which is linear time in most ConcurrentMap impl anyway)
707 for (TopologyUserLinkConfig existingLink : userLinksDB.values()) {
708 if (existingLink.equals(userLink)) {
709 return new Status(StatusCode.CONFLICT, "Link configuration exists");
712 //attempt put, if mapping for this key already existed return conflict
713 if (userLinksDB.putIfAbsent(userLink.getName(), userLink) != null) {
714 return new Status(StatusCode.CONFLICT, "Link with name : " + userLink.getName()
715 + " already exists. Please use another name");
718 Edge linkTuple = getLinkTuple(userLink);
719 if (linkTuple != null) {
720 if (!isProductionLink(linkTuple)) {
721 TopoEdgeUpdate teu = edgeUpdate(linkTuple, UpdateType.ADDED,
722 new HashSet<Property>());
724 userLinksDB.remove(userLink.getName());
725 return new Status(StatusCode.NOTFOUND,
726 "Link configuration contains invalid node connector: "
731 linkTuple = getReverseLinkTuple(userLink);
732 if (linkTuple != null) {
733 userLink.setStatus(TopologyUserLinkConfig.STATUS.SUCCESS);
734 if (!isProductionLink(linkTuple)) {
735 edgeUpdate(linkTuple, UpdateType.ADDED, new HashSet<Property>());
739 return new Status(StatusCode.SUCCESS);
743 public Status deleteUserLink(String linkName) {
744 if (linkName == null) {
745 return new Status(StatusCode.BADREQUEST, "User link name cannot be null.");
748 TopologyUserLinkConfig link = userLinksDB.remove(linkName);
750 if ((link != null) && ((linkTuple = getLinkTuple(link)) != null)) {
751 if (! isProductionLink(linkTuple)) {
752 edgeUpdate(linkTuple, UpdateType.REMOVED, null);
755 linkTuple = getReverseLinkTuple(link);
756 if (! isProductionLink(linkTuple)) {
757 edgeUpdate(linkTuple, UpdateType.REMOVED, null);
760 return new Status(StatusCode.SUCCESS);
763 private void registerWithOSGIConsole() {
764 BundleContext bundleContext = FrameworkUtil.getBundle(this.getClass())
766 bundleContext.registerService(CommandProvider.class.getName(), this,
771 public String getHelp() {
772 StringBuffer help = new StringBuffer();
773 help.append("---Topology Manager---\n");
774 help.append("\t addUserLink <name> <node connector string> <node connector string>\n");
775 help.append("\t deleteUserLink <name>\n");
776 help.append("\t printUserLink\n");
777 help.append("\t printNodeEdges\n");
778 return help.toString();
781 public void _printUserLink(CommandInterpreter ci) {
782 for (String name : this.userLinksDB.keySet()) {
783 TopologyUserLinkConfig linkConfig = userLinksDB.get(name);
784 ci.println("Name : " + name);
785 ci.println(linkConfig);
786 ci.println("Edge " + getLinkTuple(linkConfig));
787 ci.println("Reverse Edge " + getReverseLinkTuple(linkConfig));
791 public void _addUserLink(CommandInterpreter ci) {
792 String name = ci.nextArgument();
793 if ((name == null)) {
794 ci.println("Please enter a valid Name");
798 String ncStr1 = ci.nextArgument();
799 if (ncStr1 == null) {
800 ci.println("Please enter two node connector strings");
803 String ncStr2 = ci.nextArgument();
804 if (ncStr2 == null) {
805 ci.println("Please enter second node connector string");
809 NodeConnector nc1 = NodeConnector.fromString(ncStr1);
811 ci.println("Invalid input node connector 1 string: " + ncStr1);
814 NodeConnector nc2 = NodeConnector.fromString(ncStr2);
816 ci.println("Invalid input node connector 2 string: " + ncStr2);
820 TopologyUserLinkConfig config = new TopologyUserLinkConfig(name, ncStr1, ncStr2);
821 ci.println(this.addUserLink(config));
824 public void _deleteUserLink(CommandInterpreter ci) {
825 String name = ci.nextArgument();
826 if ((name == null)) {
827 ci.println("Please enter a valid Name");
830 this.deleteUserLink(name);
833 public void _printNodeEdges(CommandInterpreter ci) {
834 Map<Node, Set<Edge>> nodeEdges = getNodeEdges();
835 if (nodeEdges == null) {
838 Set<Node> nodeSet = nodeEdges.keySet();
839 if (nodeSet == null) {
842 ci.println(" Node Edge");
843 for (Node node : nodeSet) {
844 Set<Edge> edgeSet = nodeEdges.get(node);
845 if (edgeSet == null) {
848 for (Edge edge : edgeSet) {
849 ci.println(node + " " + edge);
855 public Object readObject(ObjectInputStream ois)
856 throws FileNotFoundException, IOException, ClassNotFoundException {
857 return ois.readObject();
861 public Status saveConfiguration() {
866 public void edgeOverUtilized(Edge edge) {
867 log.warn("Link Utilization above normal: {}", edge);
871 public void edgeUtilBackToNormal(Edge edge) {
872 log.warn("Link Utilization back to normal: {}", edge);
875 private void edgeUpdateClusterWide(Edge e, UpdateType type, Set<Property> props, boolean isLocal) {
876 TopoEdgeUpdate upd = new TopoEdgeUpdate(e, props, type);
877 upd.setLocal(isLocal);
882 public void entryCreated(final Object key, final String cacheName, final boolean originLocal) {
883 if (cacheName.equals(TOPOEDGESDB)) {
884 // This is the case of an Edge being added to the topology DB
885 final Edge e = (Edge) key;
886 log.trace("Edge {} CREATED isLocal:{}", e, originLocal);
887 edgeUpdateClusterWide(e, UpdateType.ADDED, null, originLocal);
892 public void entryUpdated(final Object key, final Object new_value, final String cacheName, final boolean originLocal) {
893 if (cacheName.equals(TOPOEDGESDB)) {
894 final Edge e = (Edge) key;
895 log.trace("Edge {} UPDATED isLocal:{}", e, originLocal);
896 final Set<Property> props = (Set<Property>) new_value;
897 edgeUpdateClusterWide(e, UpdateType.CHANGED, props, originLocal);
902 public void entryDeleted(final Object key, final String cacheName, final boolean originLocal) {
903 if (cacheName.equals(TOPOEDGESDB)) {
904 final Edge e = (Edge) key;
905 log.trace("Edge {} DELETED isLocal:{}", e, originLocal);
906 edgeUpdateClusterWide(e, UpdateType.REMOVED, null, originLocal);
910 class TopologyNotify implements Runnable {
911 private final BlockingQueue<TopoEdgeUpdate> notifyQ;
912 private TopoEdgeUpdate entry;
913 private List<TopoEdgeUpdate> teuList = new ArrayList<TopoEdgeUpdate>();
914 private boolean notifyListeners;
916 TopologyNotify(BlockingQueue<TopoEdgeUpdate> notifyQ) {
917 this.notifyQ = notifyQ;
924 log.trace("New run of TopologyNotify");
925 notifyListeners = false;
926 // First we block waiting for an element to get in
927 entry = notifyQ.take();
928 // Then we drain the whole queue if elements are
929 // in it without getting into any blocking condition
930 for (; entry != null; entry = notifyQ.poll()) {
932 notifyListeners = true;
935 // Notify listeners only if there were updates drained else
937 if (notifyListeners) {
938 log.trace("Notifier thread, notified a listener");
939 // Now update the listeners
940 for (ITopologyManagerClusterWideAware s : topologyManagerClusterWideAware) {
942 s.edgeUpdate(teuList);
943 } catch (Exception exc) {
944 log.error("Exception on edge update:", exc);
950 // Lets sleep for sometime to allow aggregation of event
952 } catch (InterruptedException e1) {
956 log.warn("TopologyNotify interrupted {}", e1.getMessage());
957 } catch (Exception e2) {