package org.opendaylight.controller.messagebus.app.impl;
+import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
-import java.util.Map;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.FutureCallback;
+import com.google.common.util.concurrent.Futures;
+import java.util.Collection;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.concurrent.ExecutionException;
import java.util.regex.Pattern;
-import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
-import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
+import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
+import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventaggregator.rev141202.NotificationPattern;
import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventaggregator.rev141202.TopicId;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.DisJoinTopicInput;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.DisJoinTopicInputBuilder;
import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.EventSourceService;
import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.JoinTopicInput;
import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.JoinTopicInputBuilder;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.JoinTopicOutput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
-import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.common.RpcError;
+import org.opendaylight.yangtools.yang.common.RpcResult;
import org.slf4j.LoggerFactory;
-public class EventSourceTopic implements DataChangeListener {
+public class EventSourceTopic implements DataTreeChangeListener<Node>, AutoCloseable {
private static final org.slf4j.Logger LOG = LoggerFactory.getLogger(EventSourceTopic.class);
private final NotificationPattern notificationPattern;
private final EventSourceService sourceService;
private final Pattern nodeIdPattern;
private final TopicId topicId;
+ private ListenerRegistration<?> listenerRegistration;
+ private final CopyOnWriteArraySet<InstanceIdentifier<?>> joinedEventSources = new CopyOnWriteArraySet<>();
- public EventSourceTopic(final NotificationPattern notificationPattern, final String nodeIdPattern, final EventSourceService eventSource) {
- this.notificationPattern = Preconditions.checkNotNull(notificationPattern);
- this.sourceService = eventSource;
-
- // FIXME: regex should be the language of nodeIdPattern
- final String regex = Util.wildcardToRegex(nodeIdPattern);
- this.nodeIdPattern = Pattern.compile(regex);
-
+ public static EventSourceTopic create(final NotificationPattern notificationPattern, final String nodeIdRegexPattern, final EventSourceTopology eventSourceTopology){
+ final EventSourceTopic est = new EventSourceTopic(notificationPattern, nodeIdRegexPattern, eventSourceTopology.getEventSourceService());
+ est.registerListner(eventSourceTopology);
+ est.notifyExistingNodes(eventSourceTopology);
+ return est;
+ }
- // FIXME: We need to perform some salting in order to make
- // the topic IDs less predictable.
- this.topicId = new TopicId(Util.md5String(notificationPattern + nodeIdPattern));
+ private EventSourceTopic(final NotificationPattern notificationPattern, final String nodeIdRegexPattern, final EventSourceService sourceService) {
+ this.notificationPattern = Preconditions.checkNotNull(notificationPattern);
+ this.sourceService = Preconditions.checkNotNull(sourceService);
+ this.nodeIdPattern = Pattern.compile(nodeIdRegexPattern);
+ this.topicId = new TopicId(getUUIDIdent());
+ this.listenerRegistration = null;
+ LOG.info("EventSourceTopic created - topicId {}", topicId.getValue());
}
public TopicId getTopicId() {
}
@Override
- public void onDataChanged(final AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> event) {
- for (final Map.Entry<InstanceIdentifier<?>, DataObject> changeEntry : event.getUpdatedData().entrySet()) {
- if (changeEntry.getValue() instanceof Node) {
- final Node node = (Node) changeEntry.getValue();
- if (nodeIdPattern.matcher(node.getId().getValue()).matches()) {
- notifyNode(changeEntry.getKey());
- }
+ public void onDataTreeChanged(Collection<DataTreeModification<Node>> changes) {
+ for (DataTreeModification<Node> change: changes) {
+ final DataObjectModification<Node> rootNode = change.getRootNode();
+ switch (rootNode.getModificationType()) {
+ case WRITE:
+ case SUBTREE_MODIFIED:
+ final Node node = rootNode.getDataAfter();
+ if (getNodeIdRegexPattern().matcher(node.getNodeId().getValue()).matches()) {
+ notifyNode(change.getRootPath().getRootIdentifier());
+ }
+ break;
+ default:
+ break;
}
}
}
public void notifyNode(final InstanceIdentifier<?> nodeId) {
+ LOG.debug("Notify node: {}", nodeId);
try {
- sourceService.joinTopic(getJoinTopicInputArgument(nodeId));
+ final RpcResult<JoinTopicOutput> rpcResultJoinTopic = sourceService.joinTopic(getJoinTopicInputArgument(nodeId)).get();
+ if(rpcResultJoinTopic.isSuccessful() == false){
+ for(final RpcError err : rpcResultJoinTopic.getErrors()){
+ LOG.error("Can not join topic: [{}] on node: [{}]. Error: {}",getTopicId().getValue(),nodeId.toString(),err.toString());
+ }
+ } else {
+ joinedEventSources.add(nodeId);
+ }
} catch (final Exception e) {
LOG.error("Could not invoke join topic for node {}", nodeId);
}
}
+ private void notifyExistingNodes(final EventSourceTopology eventSourceTopology){
+ LOG.debug("Notify existing nodes");
+ final Pattern nodeRegex = this.nodeIdPattern;
+
+ final ReadOnlyTransaction tx = eventSourceTopology.getDataBroker().newReadOnlyTransaction();
+ final CheckedFuture<Optional<Topology>, ReadFailedException> future =
+ tx.read(LogicalDatastoreType.OPERATIONAL, EventSourceTopology.EVENT_SOURCE_TOPOLOGY_PATH);
+
+ Futures.addCallback(future, new FutureCallback<Optional<Topology>>(){
+
+ @Override
+ public void onSuccess(final Optional<Topology> data) {
+ if(data.isPresent()) {
+ final List<Node> nodes = data.get().getNode();
+ if(nodes != null){
+ for (final Node node : nodes) {
+ if (nodeRegex.matcher(node.getNodeId().getValue()).matches()) {
+ notifyNode(EventSourceTopology.EVENT_SOURCE_TOPOLOGY_PATH.child(Node.class, node.getKey()));
+ }
+ }
+ }
+ }
+ tx.close();
+ }
+
+ @Override
+ public void onFailure(final Throwable t) {
+ LOG.error("Can not notify existing nodes", t);
+ tx.close();
+ }
+
+ });
+
+ }
+
private JoinTopicInput getJoinTopicInputArgument(final InstanceIdentifier<?> path) {
final NodeRef nodeRef = new NodeRef(path);
final JoinTopicInput jti =
return jti;
}
+ public Pattern getNodeIdRegexPattern() {
+ return nodeIdPattern;
+ }
+
+ private DisJoinTopicInput getDisJoinTopicInputArgument(final InstanceIdentifier<?> eventSourceNodeId){
+ final NodeRef nodeRef = new NodeRef(eventSourceNodeId);
+ final DisJoinTopicInput dji = new DisJoinTopicInputBuilder()
+ .setNode(nodeRef.getValue())
+ .setTopicId(topicId)
+ .build();
+ return dji;
+ }
+
+ private void registerListner(final EventSourceTopology eventSourceTopology) {
+ this.listenerRegistration =
+ eventSourceTopology.getDataBroker().registerDataTreeChangeListener(new DataTreeIdentifier<>(
+ LogicalDatastoreType.OPERATIONAL,
+ EventSourceTopology.EVENT_SOURCE_TOPOLOGY_PATH.child(Node.class)),
+ this);
+ }
+
+ @Override
+ public void close() {
+ if(this.listenerRegistration != null){
+ this.listenerRegistration.close();
+ }
+ for(final InstanceIdentifier<?> eventSourceNodeId : joinedEventSources){
+ try {
+ final RpcResult<Void> result = sourceService.disJoinTopic(getDisJoinTopicInputArgument(eventSourceNodeId)).get();
+ if(result.isSuccessful() == false){
+ for(final RpcError err : result.getErrors()){
+ LOG.error("Can not destroy topic: [{}] on node: [{}]. Error: {}",getTopicId().getValue(),eventSourceNodeId,err.toString());
+ }
+ }
+ } catch (InterruptedException | ExecutionException ex) {
+ LOG.error("Can not close event source topic / destroy topic {} on node {}.", this.topicId.getValue(), eventSourceNodeId, ex);
+ }
+ }
+ joinedEventSources.clear();
+ }
+ private static String getUUIDIdent(){
+ final UUID uuid = UUID.randomUUID();
+ return uuid.toString();
+ }
}
Code Review / controller.git / blobdiff