--- /dev/null
+/*
+ * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.messagebus.eventsources.netconf;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.concurrent.ConcurrentHashMap;
+import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
+import org.opendaylight.controller.md.sal.dom.api.DOMNotificationService;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventaggregator.rev141202.TopicId;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.CreateSubscriptionInput;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netmod.notification.rev080714.netconf.streams.Stream;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
+import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
+import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeAttrBuilder;
+import org.opendaylight.yangtools.yang.model.api.SchemaPath;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class StreamNotificationTopicRegistration extends NotificationTopicRegistration {
+
+ private static final Logger LOG = LoggerFactory.getLogger(StreamNotificationTopicRegistration.class);
+ private static final NodeIdentifier STREAM_QNAME = new NodeIdentifier(
+ QName.create(CreateSubscriptionInput.QNAME, "stream"));
+ private static final SchemaPath CREATE_SUBSCRIPTION = SchemaPath
+ .create(true, QName.create(CreateSubscriptionInput.QNAME, "create-subscription"));
+ private static final NodeIdentifier START_TIME_SUBSCRIPTION = new NodeIdentifier(
+ QName.create(CreateSubscriptionInput.QNAME, "startTime"));
+
+ final private DOMMountPoint domMountPoint;
+ final private String nodeId;
+ final private NetconfEventSource netconfEventSource;
+ final private Stream stream;
+ private Date lastEventTime;
+
+ private ConcurrentHashMap<SchemaPath, ListenerRegistration<NetconfEventSource>> notificationRegistrationMap = new ConcurrentHashMap<>();
+ private ConcurrentHashMap<SchemaPath, ArrayList<TopicId>> notificationTopicMap = new ConcurrentHashMap<>();
+
+ public StreamNotificationTopicRegistration(final Stream stream, final String notificationPrefix,
+ NetconfEventSource netconfEventSource) {
+ super(NotificationSourceType.NetconfDeviceStream, stream.getName().getValue(), notificationPrefix);
+ this.domMountPoint = netconfEventSource.getDOMMountPoint();
+ this.nodeId = netconfEventSource.getNode().getNodeId().getValue().toString();
+ this.netconfEventSource = netconfEventSource;
+ this.stream = stream;
+ this.lastEventTime = null;
+ setReplaySupported(this.stream.isReplaySupport());
+ setActive(false);
+ LOG.info("StreamNotificationTopicRegistration initialized for {}", getStreamName());
+ }
+
+ void activateNotificationSource() {
+ if (isActive() == false) {
+ LOG.info("Stream {} is not active on node {}. Will subscribe.", this.getStreamName(), this.nodeId);
+ final ContainerNode input = Builders.containerBuilder()
+ .withNodeIdentifier(new NodeIdentifier(CreateSubscriptionInput.QNAME))
+ .withChild(ImmutableNodes.leafNode(STREAM_QNAME, this.getStreamName())).build();
+ CheckedFuture<DOMRpcResult, DOMRpcException> csFuture = domMountPoint.getService(DOMRpcService.class).get()
+ .invokeRpc(CREATE_SUBSCRIPTION, input);
+ try {
+ csFuture.checkedGet();
+ setActive(true);
+ } catch (DOMRpcException e) {
+ LOG.warn("Can not subscribe stream {} on node {}", this.getSourceName(), this.nodeId);
+ setActive(false);
+ return;
+ }
+ } else {
+ LOG.info("Stream {} is now active on node {}", this.getStreamName(), this.nodeId);
+ }
+ }
+
+ void reActivateNotificationSource() {
+ if (isActive()) {
+ LOG.info("Stream {} is reactivating on node {}.", this.getStreamName(), this.nodeId);
+ DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> inputBuilder = Builders.containerBuilder()
+ .withNodeIdentifier(new NodeIdentifier(CreateSubscriptionInput.QNAME))
+ .withChild(ImmutableNodes.leafNode(STREAM_QNAME, this.getStreamName()));
+ if (isReplaySupported() && this.getLastEventTime() != null) {
+ inputBuilder.withChild(ImmutableNodes.leafNode(START_TIME_SUBSCRIPTION, this.getLastEventTime()));
+ }
+ final ContainerNode input = inputBuilder.build();
+ CheckedFuture<DOMRpcResult, DOMRpcException> csFuture = domMountPoint.getService(DOMRpcService.class).get()
+ .invokeRpc(CREATE_SUBSCRIPTION, input);
+ try {
+ csFuture.checkedGet();
+ setActive(true);
+ } catch (DOMRpcException e) {
+ LOG.warn("Can not resubscribe stream {} on node {}", this.getSourceName(), this.nodeId);
+ setActive(false);
+ return;
+ }
+ }
+ }
+
+ @Override void deActivateNotificationSource() {
+ // no operations need
+ }
+
+ private void closeStream() {
+ if (isActive()) {
+ for (ListenerRegistration<NetconfEventSource> reg : notificationRegistrationMap.values()) {
+ reg.close();
+ }
+ notificationRegistrationMap.clear();
+ notificationTopicMap.clear();
+ setActive(false);
+ }
+ }
+
+ private String getStreamName() {
+ return getSourceName();
+ }
+
+ @Override ArrayList<TopicId> getNotificationTopicIds(SchemaPath notificationPath) {
+ return notificationTopicMap.get(notificationPath);
+ }
+
+ @Override boolean registerNotificationTopic(SchemaPath notificationPath, TopicId topicId) {
+
+ if (checkNotificationPath(notificationPath) == false) {
+ LOG.debug("Bad SchemaPath for notification try to register");
+ return false;
+ }
+
+ final Optional<DOMNotificationService> notifyService = domMountPoint.getService(DOMNotificationService.class);
+ if (notifyService.isPresent() == false) {
+ LOG.debug("DOMNotificationService is not present");
+ return false;
+ }
+
+ activateNotificationSource();
+ if (isActive() == false) {
+ LOG.warn("Stream {} is not active, listener for notification {} is not registered.", getStreamName(),
+ notificationPath.toString());
+ return false;
+ }
+
+ ListenerRegistration<NetconfEventSource> registration = notifyService.get()
+ .registerNotificationListener(this.netconfEventSource, notificationPath);
+ notificationRegistrationMap.put(notificationPath, registration);
+ ArrayList<TopicId> topicIds = getNotificationTopicIds(notificationPath);
+ if (topicIds == null) {
+ topicIds = new ArrayList<>();
+ topicIds.add(topicId);
+ } else {
+ if (topicIds.contains(topicId) == false) {
+ topicIds.add(topicId);
+ }
+ }
+
+ notificationTopicMap.put(notificationPath, topicIds);
+ return true;
+ }
+
+ @Override synchronized void unRegisterNotificationTopic(TopicId topicId) {
+ List<SchemaPath> notificationPathToRemove = new ArrayList<>();
+ for (SchemaPath notifKey : notificationTopicMap.keySet()) {
+ ArrayList<TopicId> topicList = notificationTopicMap.get(notifKey);
+ if (topicList != null) {
+ topicList.remove(topicId);
+ if (topicList.isEmpty()) {
+ notificationPathToRemove.add(notifKey);
+ }
+ }
+ }
+ for (SchemaPath notifKey : notificationPathToRemove) {
+ notificationTopicMap.remove(notifKey);
+ ListenerRegistration<NetconfEventSource> reg = notificationRegistrationMap.remove(notifKey);
+ if (reg != null) {
+ reg.close();
+ }
+ }
+ }
+
+ Optional<Date> getLastEventTime() {
+ return Optional.fromNullable(lastEventTime);
+ }
+
+ void setLastEventTime(Date lastEventTime) {
+ this.lastEventTime = lastEventTime;
+ }
+
+ @Override public void close() throws Exception {
+ closeStream();
+ }
+
+}
Code Review / controller.git / blobdiff