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/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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 org.keycloak.adapters.springsecurity.management;

import org.keycloak.adapters.spi.UserSessionManagement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import java.util.List;

/**
 * User session manager for handling logout of Spring Secured sessions.
 *
 * @author Scott Rossillo
 * @version $Revision: 1 $
 */
@Component
public class HttpSessionManager implements HttpSessionListener, UserSessionManagement {

    private static final Logger log = LoggerFactory.getLogger(HttpSessionManager.class);
    private SessionManagementStrategy sessions = new LocalSessionManagementStrategy();

    @Override
    public void sessionCreated(HttpSessionEvent event) {
        log.debug("Session created: {}", event.getSession().getId());
        HttpSession session = event.getSession();
        sessions.store(session);
    }

    @Override
    public void sessionDestroyed(HttpSessionEvent event) {
        sessions.remove(event.getSession().getId());
    }

    @Override
    public void logoutAll() {
        log.info("Received request to log out all users.");
        for (HttpSession session : sessions.getAll()) {
            session.invalidate();
        }
        sessions.clear();
    }

    @Override
    public void logoutHttpSessions(List ids) {
        log.info("Received request to log out {} session(s): {}", ids.size(), ids);
        for (String id : ids) {
            HttpSession session = sessions.remove(id);
            if (session != null) {
                session.invalidate();
            }
        }
        sessions.clear();
    }
}