spring SessionDisconnectEvent 源码
spring SessionDisconnectEvent 代码
文件路径：/spring-websocket/src/main/java/org/springframework/web/socket/messaging/SessionDisconnectEvent.java
/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.socket.messaging;
import java.security.Principal;
import org.springframework.lang.Nullable;
import org.springframework.messaging.Message;
import org.springframework.util.Assert;
import org.springframework.web.socket.CloseStatus;
/**
* Event raised when the session of a WebSocket client using a Simple Messaging
* Protocol (e.g. STOMP) as the WebSocket sub-protocol is closed.
*
* <p>Note that this event may be raised more than once for a single session and
* therefore event consumers should be idempotent and ignore a duplicate event.
*
* @author Rossen Stoyanchev
* @since 4.0.3
*/
@SuppressWarnings("serial")
public class SessionDisconnectEvent extends AbstractSubProtocolEvent {
private final String sessionId;
private final CloseStatus status;
/**
* Create a new SessionDisconnectEvent.
* @param source the component that published the event (never {@code null})
* @param message the message (never {@code null})
* @param sessionId the disconnect message
* @param closeStatus the status object
*/
public SessionDisconnectEvent(Object source, Message<byte[]> message, String sessionId,
CloseStatus closeStatus) {
this(source, message, sessionId, closeStatus, null);
}
/**
* Create a new SessionDisconnectEvent.
* @param source the component that published the event (never {@code null})
* @param message the message (never {@code null})
* @param sessionId the disconnect message
* @param closeStatus the status object
* @param user the current session user
*/
public SessionDisconnectEvent(Object source, Message<byte[]> message, String sessionId,
CloseStatus closeStatus, @Nullable Principal user) {
super(source, message, user);
Assert.notNull(sessionId, "Session id must not be null");
this.sessionId = sessionId;
this.status = closeStatus;
}
/**
* Return the session id.
*/
public String getSessionId() {
return this.sessionId;
}
/**
* Return the status with which the session was closed.
*/
public CloseStatus getCloseStatus() {
return this.status;
}
@Override
public String toString() {
return "SessionDisconnectEvent[sessionId=" + this.sessionId + ", " + this.status.toString() + "]";
}
}
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