NettyKeyAccess.java

/*
 * Copyright (c) 2013 Robert Varga. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.tcpmd5.netty;

import com.google.common.base.Preconditions;

import io.netty.channel.ChannelException;

import java.io.IOException;
import java.nio.channels.NetworkChannel;

import org.opendaylight.tcpmd5.api.KeyAccess;
import org.opendaylight.tcpmd5.api.KeyAccessFactory;
import org.opendaylight.tcpmd5.api.KeyMapping;

/**
 * Utility class for handling MD5 option.
 */
final class NettyKeyAccess implements KeyAccess {
    private final KeyAccess delegate;

    private NettyKeyAccess(final KeyAccess delegate) {
        this.delegate = Preconditions.checkNotNull(delegate);
    }

    public static NettyKeyAccess create(final KeyAccessFactory factory, final NetworkChannel channel) {
        final KeyAccess access = factory.getKeyAccess(channel);
        return new NettyKeyAccess(access);
    }

    @Override
    public KeyMapping getKeys() {
        try {
            return delegate.getKeys();
        } catch (IOException e) {
            throw new ChannelException("Failed to set channel MD5 signature keys", e);
        }
    }

    @Override
    public void setKeys(final KeyMapping keys) {
        try {
            delegate.setKeys(keys);
        } catch (IOException e) {
            throw new ChannelException("Failed to set channel MD5 signature key", e);
        }
    }
}