spring SubscriptionRegistry 源码
spring SubscriptionRegistry 代码
文件路径：/spring-messaging/src/main/java/org/springframework/messaging/simp/broker/SubscriptionRegistry.java
/*
* Copyright 2002-2018 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.messaging.simp.broker;
import org.springframework.messaging.Message;
import org.springframework.util.MultiValueMap;
/**
* A registry of subscription by session that allows looking up subscriptions.
*
* @author Rossen Stoyanchev
* @since 4.0
*/
public interface SubscriptionRegistry {
/**
* Register a subscription represented by the given message.
* @param subscribeMessage the subscription request
*/
void registerSubscription(Message<?> subscribeMessage);
/**
* Unregister a subscription.
* @param unsubscribeMessage the request to unsubscribe
*/
void unregisterSubscription(Message<?> unsubscribeMessage);
/**
* Remove all subscriptions associated with the given sessionId.
*/
void unregisterAllSubscriptions(String sessionId);
/**
* Find all subscriptions that should receive the given message.
* The map returned is safe to iterate and will never be modified.
* @param message the message
* @return a {@code MultiValueMap} with sessionId-subscriptionId pairs
* (possibly empty)
*/
MultiValueMap<String, String> findSubscriptions(Message<?> message);
}
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