import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentSkipListSet;
import java.util.concurrent.Future;
import java.util.regex.Pattern;
import javax.xml.transform.dom.DOMSource;
import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
-import org.opendaylight.controller.md.sal.binding.api.MountPoint;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
import org.opendaylight.controller.md.sal.dom.api.DOMNotification;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.common.RpcError.ErrorType;
import org.opendaylight.yangtools.yang.common.RpcResult;
import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
private static final NodeIdentifier TOPIC_NOTIFICATION_ARG = new NodeIdentifier(TopicNotification.QNAME);
private static final NodeIdentifier EVENT_SOURCE_ARG = new NodeIdentifier(QName.create(TopicNotification.QNAME, "node-id"));
+ private static final NodeIdentifier TOPIC_ID_ARG = new NodeIdentifier(QName.create(TopicNotification.QNAME, "topic-id"));
private static final NodeIdentifier PAYLOAD_ARG = new NodeIdentifier(QName.create(TopicNotification.QNAME, "payload"));
private static final NodeIdentifier STREAM_QNAME = new NodeIdentifier(QName.create(CreateSubscriptionInput.QNAME,"stream"));
private final DOMMountPoint netconfMount;
private final DOMNotificationPublishService domPublish;
- private final Set<String> activeStreams = new ConcurrentSkipListSet<>();
private final Map<String, String> urnPrefixToStreamMap;
- private final ConcurrentHashMap<TopicId,ListenerRegistration<NetconfEventSource>> listenerRegistrationMap = new ConcurrentHashMap<>();
- public NetconfEventSource(final Node node, final Map<String, String> streamMap, final DOMMountPoint netconfMount, final DOMNotificationPublishService publishService, final MountPoint bindingMount) {
+ private final ConcurrentHashMap<String, StreamNotificationTopicRegistration> streamNotifRegistrationMap = new ConcurrentHashMap<>();
+
+ public NetconfEventSource(final Node node, final Map<String, String> streamMap, final DOMMountPoint netconfMount, final DOMNotificationPublishService publishService) {
this.netconfMount = netconfMount;
this.node = node;
this.nodeId = node.getNodeId().getValue();
this.urnPrefixToStreamMap = streamMap;
this.domPublish = publishService;
+ this.initializeStreamNotifRegistrationMap();
LOG.info("NetconfEventSource [{}] created.", nodeId);
}
+ private void initializeStreamNotifRegistrationMap(){
+ for(String streamName : this.urnPrefixToStreamMap.values()){
+ streamNotifRegistrationMap.put(streamName, new StreamNotificationTopicRegistration(streamName, this.nodeId, this.netconfMount, this));
+ }
+ }
+
@Override
public Future<RpcResult<JoinTopicOutput>> joinTopic(final JoinTopicInput input) {
+
final NotificationPattern notificationPattern = input.getNotificationPattern();
final List<SchemaPath> matchingNotifications = getMatchingNotifications(notificationPattern);
- return registerNotificationListener(input.getTopicId(),matchingNotifications);
+ return registerTopic(input.getTopicId(),matchingNotifications);
+
}
- private synchronized Future<RpcResult<JoinTopicOutput>> registerNotificationListener(final TopicId topicId, final List<SchemaPath> notificationsToSubscribe){
- if(listenerRegistrationMap.containsKey(topicId)){
- final String errMessage = "Can not join topic twice. Topic " + topicId.getValue() + " has been joined to node " + this.nodeId;
- return immediateFuture(RpcResultBuilder.<JoinTopicOutput>failed().withError(ErrorType.APPLICATION, errMessage).build());
- }
- ListenerRegistration<NetconfEventSource> registration = null;
- JoinTopicStatus joinTopicStatus = JoinTopicStatus.Down;
- final Optional<DOMNotificationService> notifyService = netconfMount.getService(DOMNotificationService.class);
+ private synchronized Future<RpcResult<JoinTopicOutput>> registerTopic(final TopicId topicId, final List<SchemaPath> notificationsToSubscribe){
- if(notifyService.isPresent()) {
- for (final SchemaPath qName : notificationsToSubscribe) {
- startSubscription(qName);
+ JoinTopicStatus joinTopicStatus = JoinTopicStatus.Down;
+ if(notificationsToSubscribe != null && notificationsToSubscribe.isEmpty() == false){
+ final Optional<DOMNotificationService> notifyService = netconfMount.getService(DOMNotificationService.class);
+ if(notifyService.isPresent()){
+ int subscribedStreams = 0;
+ for(SchemaPath schemaNotification : notificationsToSubscribe){
+ final Optional<String> streamName = resolveStream(schemaNotification.getLastComponent());
+ if(streamName.isPresent()){
+ LOG.info("Stream {} is activating, TopicId {}", streamName.get(), topicId.getValue() );
+ StreamNotificationTopicRegistration streamReg = streamNotifRegistrationMap.get(streamName.get());
+ streamReg.activateStream();
+ for(SchemaPath notificationPath : notificationsToSubscribe){
+ LOG.info("Notification listener is registering, Notification {}, TopicId {}", notificationPath, topicId.getValue() );
+ streamReg.registerNotificationListenerTopic(notificationPath, topicId);
+ }
+ subscribedStreams = subscribedStreams + 1;
+ }
+ }
+ if(subscribedStreams > 0){
+ joinTopicStatus = JoinTopicStatus.Up;
+ }
}
- registration = notifyService.get().registerNotificationListener(this, notificationsToSubscribe);
}
- if(registration != null){
- listenerRegistrationMap.put(topicId,registration);
- joinTopicStatus = JoinTopicStatus.Up;
- }
final JoinTopicOutput output = new JoinTopicOutputBuilder().setStatus(joinTopicStatus).build();
return immediateFuture(RpcResultBuilder.success(output).build());
- }
- private void startSubscription(final SchemaPath path) {
- final String streamName = resolveStream(path.getLastComponent());
- startSubscription(streamName);
}
private void resubscribeToActiveStreams() {
- for (final String streamName : activeStreams) {
- startSubscription(streamName);
- }
- }
-
- private synchronized void startSubscription(final String streamName) {
- if(streamIsActive(streamName) == false){
- LOG.info("Stream {} is not active on node {}. Will subscribe.", streamName, nodeId);
- final ContainerNode input = Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(CreateSubscriptionInput.QNAME))
- .withChild(ImmutableNodes.leafNode(STREAM_QNAME, streamName))
- .build();
- netconfMount.getService(DOMRpcService.class).get().invokeRpc(CREATE_SUBSCRIPTION, input);
- activeStreams.add(streamName);
+ for (StreamNotificationTopicRegistration streamReg : streamNotifRegistrationMap.values()){
+ streamReg.reActivateStream();
}
}
- private String resolveStream(final QName qName) {
+ private Optional<String> resolveStream(final QName qName) {
String streamName = null;
for (final Map.Entry<String, String> entry : urnPrefixToStreamMap.entrySet()) {
break;
}
}
-
- return streamName;
- }
-
- private boolean streamIsActive(final String streamName) {
- return activeStreams.contains(streamName);
+ return Optional.fromNullable(streamName);
}
@Override
public void onNotification(final DOMNotification notification) {
- final ContainerNode topicNotification = Builders.containerBuilder()
- .withNodeIdentifier(TOPIC_NOTIFICATION_ARG)
- .withChild(ImmutableNodes.leafNode(EVENT_SOURCE_ARG, nodeId))
- .withChild(encapsulate(notification))
- .build();
- try {
- domPublish.putNotification(new TopicDOMNotification(topicNotification));
- } catch (final InterruptedException e) {
- throw Throwables.propagate(e);
+ SchemaPath notificationPath = notification.getType();
+ LOG.info("Notification {} has come.",notification.getType());
+ for(StreamNotificationTopicRegistration streamReg : streamNotifRegistrationMap.values()){
+ for(TopicId topicId : streamReg.getNotificationTopicIds(notificationPath)){
+ publishNotification(notification, topicId);
+ LOG.info("Notification {} has been published for TopicId {}",notification.getType(), topicId.getValue());
+ }
}
}
+ private void publishNotification(final DOMNotification notification, TopicId topicId){
+ final ContainerNode topicNotification = Builders.containerBuilder()
+ .withNodeIdentifier(TOPIC_NOTIFICATION_ARG)
+ .withChild(ImmutableNodes.leafNode(TOPIC_ID_ARG, topicId))
+ .withChild(ImmutableNodes.leafNode(EVENT_SOURCE_ARG, nodeId))
+ .withChild(encapsulate(notification))
+ .build();
+ try {
+ domPublish.putNotification(new TopicDOMNotification(topicNotification));
+ } catch (final InterruptedException e) {
+ throw Throwables.propagate(e);
+ }
+ }
+
private AnyXmlNode encapsulate(final DOMNotification body) {
// FIXME: Introduce something like AnyXmlWithNormalizedNodeData in Yangtools
final Document doc = XmlUtil.newDocument();
final String regex = Util.wildcardToRegex(notificationPattern.getValue());
final Pattern pattern = Pattern.compile(regex);
- return Util.expandQname(getAvailableNotifications(), pattern);
+ List<SchemaPath> availableNotifications = getAvailableNotifications();
+ if(availableNotifications == null || availableNotifications.isEmpty()){
+ return null;
+ }
+ return Util.expandQname(availableNotifications, pattern);
}
@Override
public void close() throws Exception {
- for(ListenerRegistration<NetconfEventSource> registration : listenerRegistrationMap.values()){
- registration.close();
+ for(StreamNotificationTopicRegistration streamReg : streamNotifRegistrationMap.values()){
+ streamReg.deactivateStream();
}
}
return qNs;
}
+ private class StreamNotificationTopicRegistration{
+
+ final private String streamName;
+ final private DOMMountPoint netconfMount;
+ final private String nodeId;
+ final private NetconfEventSource notificationListener;
+ private boolean active;
+
+ private ConcurrentHashMap<SchemaPath, ListenerRegistration<NetconfEventSource>> notificationRegistrationMap = new ConcurrentHashMap<>();
+ private ConcurrentHashMap<SchemaPath, ArrayList<TopicId>> notificationTopicMap = new ConcurrentHashMap<>();
+
+ public StreamNotificationTopicRegistration(final String streamName, final String nodeId, final DOMMountPoint netconfMount, NetconfEventSource notificationListener) {
+ this.streamName = streamName;
+ this.netconfMount = netconfMount;
+ this.nodeId = nodeId;
+ this.notificationListener = notificationListener;
+ this.active = false;
+ }
+
+ public boolean isActive() {
+ return active;
+ }
+
+ public void reActivateStream(){
+ if(this.isActive()){
+ LOG.info("Stream {} is reactivated active on node {}.", this.streamName, this.nodeId);
+ final ContainerNode input = Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(CreateSubscriptionInput.QNAME))
+ .withChild(ImmutableNodes.leafNode(STREAM_QNAME, this.streamName))
+ .build();
+ netconfMount.getService(DOMRpcService.class).get().invokeRpc(CREATE_SUBSCRIPTION, input);
+ }
+ }
+
+ public void activateStream() {
+ if(this.isActive() == false){
+ LOG.info("Stream {} is not active on node {}. Will subscribe.", this.streamName, this.nodeId);
+ final ContainerNode input = Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(CreateSubscriptionInput.QNAME))
+ .withChild(ImmutableNodes.leafNode(STREAM_QNAME, this.streamName))
+ .build();
+ netconfMount.getService(DOMRpcService.class).get().invokeRpc(CREATE_SUBSCRIPTION, input);
+ this.active = true;
+ } else {
+ LOG.info("Stream {} is now active on node {}", this.streamName, this.nodeId);
+ }
+ }
+
+ public void deactivateStream() {
+ for(ListenerRegistration<NetconfEventSource> reg : notificationRegistrationMap.values()){
+ reg.close();
+ }
+ this.active = false;
+ }
+
+ public String getStreamName() {
+ return streamName;
+ }
+
+ public ArrayList<TopicId> getNotificationTopicIds(SchemaPath notificationPath){
+ return notificationTopicMap.get(notificationPath);
+ }
+
+ public void registerNotificationListenerTopic(SchemaPath notificationPath, TopicId topicId){
+ final Optional<DOMNotificationService> notifyService = netconfMount.getService(DOMNotificationService.class);
+ if(notificationPath != null && notifyService.isPresent()){
+ ListenerRegistration<NetconfEventSource> registration = notifyService.get().registerNotificationListener(this.notificationListener,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);
+ }
+ }
+
+ }
}
Code Review / controller.git / blobdiff