/**
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * 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.apache.mina.proxy.session;

import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.core.session.IoSessionInitializer;

/**
 * ProxyIoSessionInitializer.java - {@link IoSessionInitializer} wrapper class to inject the 
 * {@link ProxyIoSession} object that contains all the attributes of the target connection 
 * into the {@link IoSession}.
 *
 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
 * @since MINA 2.0.0-M3
 */
public class ProxyIoSessionInitializer<T extends ConnectFuture> implements
        IoSessionInitializer<T> {
    private final IoSessionInitializer<T> wrappedSessionInitializer;

    private final ProxyIoSession proxyIoSession;

    public ProxyIoSessionInitializer(
            final IoSessionInitializer<T> wrappedSessionInitializer,
            final ProxyIoSession proxyIoSession) {
        this.wrappedSessionInitializer = wrappedSessionInitializer;
        this.proxyIoSession = proxyIoSession;
    }

    public ProxyIoSession getProxySession() {
        return proxyIoSession;
    }

    public void initializeSession(final IoSession session, T future) {
        if (wrappedSessionInitializer != null) {
            wrappedSessionInitializer.initializeSession(session, future);
        }

        if (proxyIoSession != null) {
            proxyIoSession.setSession(session);
            session.setAttribute(ProxyIoSession.PROXY_SESSION, proxyIoSession);
        }
    }
}