2 * Copyright (c) 2022 PANTHEON.tech, s.r.o. 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
8 package org.opendaylight.mdsal.binding.api;
10 import com.google.common.annotations.Beta;
11 import com.google.common.util.concurrent.ListenableFuture;
12 import java.util.concurrent.TimeUnit;
13 import org.eclipse.jdt.annotation.NonNull;
14 import org.opendaylight.yangtools.util.concurrent.FluentFutures;
15 import org.opendaylight.yangtools.yang.binding.DataObject;
16 import org.opendaylight.yangtools.yang.binding.InstanceNotification;
19 * A {@link BindingService} which allows its users to submit YANG-modeled top-level (YANG 1.1)
20 * {@link InstanceNotification}s for delivery. There are three methods of submission, following the patters from
21 * {@link java.util.concurrent.BlockingQueue}:
23 * <li>{@link #putNotification(InstanceNotification)}, which may block indefinitely if the implementation cannot
24 * allocate resources to accept the notification,</li>
25 * <li>{@link #offerNotification(InstanceNotification)}, which does not block if face of resource starvation,</li>
26 * <li>{@link #offerNotification(InstanceNotification, int, TimeUnit)}, which may block for specified time if
27 * resources are thin.</li>
31 * The actual delivery to listeners is asynchronous and implementation-specific. Users of this interface should not make
32 * any assumptions as to whether the notification has or has not been seen.
35 public interface InstanceNotificationPublishService extends BindingService {
37 * Well-known value indicating that the binding-aware implementation is currently not able to accept a notification.
39 @NonNull ListenableFuture<Object> REJECTED = FluentFutures.immediateFailedFluentFuture(
40 new NotificationRejectedException("Rejected due to resource constraints."));
43 * Publishes a notification to subscribed listeners. This initiates the process of sending the notification, but
44 * delivery to the listeners can happen asynchronously, potentially after a call to this method returns.
46 * <b>Note:</b> This call will block when the notification queue is full.
48 * @param notification the notification to publish.
49 * @throws InterruptedException if interrupted while waiting
50 * @throws NullPointerException if any argument is null
52 <N extends InstanceNotification<N, P>, P extends DataObject> void putNotification(
53 @NonNull DataTreeIdentifier<P> path, @NonNull N notification) throws InterruptedException;
56 * Publishes a notification to subscribed listeners. This initiates the process of sending the notification, but
57 * delivery to the listeners can happen asynchronously, potentially after a call to this method returns.
60 * Still guaranteed not to block. Returns Listenable Future which will complete once the delivery is completed.
62 * @param notification the notification to publish.
63 * @return A listenable future which will report completion when the service has finished propagating the
64 * notification to its immediate registrants, or {@link #REJECTED} if resource constraints prevent
65 * @throws NullPointerException if any argument is null
67 <N extends InstanceNotification<N, P>, P extends DataObject>
68 @NonNull ListenableFuture<? extends Object> offerNotification(@NonNull DataTreeIdentifier<P> path,
69 @NonNull N notification);
72 * Publishes a notification to subscribed listeners. This initiates the process of sending the notification, but
73 * delivery to the listeners can happen asynchronously, potentially after a call to this method returns. This method
74 * is guaranteed not to block more than the specified timeout.
76 * @param notification the notification to publish.
77 * @param timeout how long to wait before giving up, in units of unit
78 * @param unit a TimeUnit determining how to interpret the timeout parameter
79 * @return A listenable future which will report completion when the service has finished propagating the
80 * notification to its immediate registrants, or {@link #REJECTED} if resource constraints prevent
81 * @throws InterruptedException if interrupted while waiting
82 * @throws NullPointerException if any argument is null
83 * @throws IllegalArgumentException if timeout is negative.
85 <N extends InstanceNotification<N, P>, P extends DataObject>
86 @NonNull ListenableFuture<? extends Object> offerNotification(@NonNull DataTreeIdentifier<P> path,
87 @NonNull N notification, long timeout, @NonNull TimeUnit unit) throws InterruptedException;