io.bitsensor.plugins.shaded.org.springframework.messaging.simp.user.UserSessionRegistryAdapter Maven / Gradle / Ivy
/*
* Copyright 2002-2016 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
*
* http://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 io.bitsensor.plugins.shaded.org.springframework.messaging.simp.user;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import io.bitsensor.plugins.shaded.org.springframework.util.CollectionUtils;
/**
* An adapter that allows a {@code UserSessionRegistry}, which is deprecated in
* favor of {@code SimpUserRegistry}, to be used as a {@code SimpUserRegistry}.
* Due to the more limited information available, methods such as
* {@link #getUsers()} and {@link #findSubscriptions} are not supported.
*
* As of 4.2, this adapter is used only in applications that explicitly
* register a custom {@code UserSessionRegistry} bean by overriding
* {@link io.bitsensor.plugins.shaded.org.springframework.messaging.simp.config.AbstractMessageBrokerConfiguration#userSessionRegistry()}.
*
* @author Rossen Stoyanchev
* @since 4.2
*/
@SuppressWarnings("deprecation")
public class UserSessionRegistryAdapter implements SimpUserRegistry {
private final UserSessionRegistry userSessionRegistry;
public UserSessionRegistryAdapter(UserSessionRegistry registry) {
this.userSessionRegistry = registry;
}
@Override
public SimpUser getUser(String userName) {
Set sessionIds = this.userSessionRegistry.getSessionIds(userName);
return (!CollectionUtils.isEmpty(sessionIds) ? new SimpUserAdapter(userName, sessionIds) : null);
}
@Override
public Set getUsers() {
throw new UnsupportedOperationException("UserSessionRegistry does not expose a listing of users");
}
@Override
public int getUserCount() {
throw new UnsupportedOperationException("UserSessionRegistry does not expose a user count");
}
@Override
public Set findSubscriptions(SimpSubscriptionMatcher matcher) {
throw new UnsupportedOperationException("UserSessionRegistry does not support operations across users");
}
/**
* Expose the only information available from a UserSessionRegistry
* (name and session id's) as a {@code SimpUser}.
*/
private static class SimpUserAdapter implements SimpUser {
private final String name;
private final Map sessions;
public SimpUserAdapter(String name, Set sessionIds) {
this.name = name;
this.sessions = new HashMap(sessionIds.size());
for (String sessionId : sessionIds) {
this.sessions.put(sessionId, new SimpSessionAdapter(sessionId));
}
}
@Override
public String getName() {
return this.name;
}
@Override
public boolean hasSessions() {
return !this.sessions.isEmpty();
}
@Override
public SimpSession getSession(String sessionId) {
return this.sessions.get(sessionId);
}
@Override
public Set getSessions() {
return new HashSet(this.sessions.values());
}
}
/**
* Expose the only information available from a UserSessionRegistry
* (session ids but no subscriptions) as a {@code SimpSession}.
*/
private static class SimpSessionAdapter implements SimpSession {
private final String id;
public SimpSessionAdapter(String id) {
this.id = id;
}
@Override
public String getId() {
return this.id;
}
@Override
public SimpUser getUser() {
return null;
}
@Override
public Set getSubscriptions() {
return Collections.emptySet();
}
}
}