jakarta.faces.push.PushContext Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package jakarta.faces.push;
import java.io.Serializable;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import jakarta.websocket.RemoteEndpoint.Async;
/**
*
* CDI interface to send a message object to the push socket channel as identified by @{@link Push}.
* This can be injected via @Push in any container managed artifact in WAR.
*
*
* @Inject
* @Push
* private PushContext channelName;
*
*
* For detailed usage instructions, see @{@link Push} javadoc.
*
* @since 2.3
* @see Push
*/
public interface PushContext extends Serializable {
// Constants ------------------------------------------------------------------------------------------------------
/** The boolean context parameter name to explicitly enable web socket endpoint during startup. */
String ENABLE_WEBSOCKET_ENDPOINT_PARAM_NAME = "jakarta.faces.ENABLE_WEBSOCKET_ENDPOINT";
/** The integer context parameter name to specify the websocket endpoint port when it's different from HTTP port. */
String WEBSOCKET_ENDPOINT_PORT_PARAM_NAME = "jakarta.faces.WEBSOCKET_ENDPOINT_PORT";
/** The context-relative web socket URI prefix where the endpoint should listen on. */
String URI_PREFIX = "/jakarta.faces.push";
// Actions --------------------------------------------------------------------------------------------------------
/**
* Send given message object to the push socket channel as identified by @{@link Push}. The message
* object will be encoded as JSON and be available as first argument of the JavaScript listener function declared in
* <f:websocket onmessage>.
*
* @param message The push message object.
* @return The results of the send operation. If it returns an empty set, then there was no open web socket session
* associated with given socket channel. The returned futures will return null on {@link Future#get()} if
* the message was successfully delivered and otherwise throw {@link ExecutionException}.
* @throws IllegalArgumentException If given message object cannot be encoded as JSON.
* @see Async#sendText(String)
*/
Set> send(Object message);
/**
* Send given message object to the push socket channel as identified by @{@link Push}, targeted to the
* given user as identified by <f:websocket user>. The message object will be encoded as JSON and be
* available as first argument of the JavaScript listener function declared in
* <f:websocket onmessage>.
*
* @param The generic type of the user identifier.
* @param message The push message object.
* @param user The user to which the push message object must be delivered to.
* @return The results of the send operation. If it returns an empty set, then there was no open web socket session
* associated with given socket channel and user. The returned futures will return null on
* {@link Future#get()} if the message was successfully delivered and otherwise throw {@link ExecutionException}.
* @throws IllegalArgumentException If given message object cannot be encoded as JSON.
* @see Async#sendText(String)
*/
Set> send(Object message, S user);
/**
* Send given message object to the push socket channel as identified by @{@link Push}, targeted to the
* given users as identified by <f:websocket user>. The message object will be encoded as JSON and be
* available as first argument of the JavaScript listener function declared in
* <f:websocket onmessage>.
*
* @param The generic type of the user identifier.
* @param message The push message object.
* @param users The users to which the push message object must be delivered to.
* @return The results of the send operation grouped by user. If it contains an empty set, then there was no open web
* socket session associated with given socket channel and user. The returned futures will return null on
* {@link Future#get()} if the message was successfully delivered and otherwise throw {@link ExecutionException}.
* @throws IllegalArgumentException If given message object cannot be encoded as JSON.
* @see Async#sendText(String)
*/
Map>> send(Object message, Collection users);
}