Masker.java

/**
 * Copyright 2007-2015, 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.kaazing.k3po.driver.internal.behavior.handler.codec;

import org.jboss.netty.buffer.ChannelBuffer;

public abstract class Masker {

    public static final Masker IDENTITY_MASKER = new Masker() {

        @Override
        public ChannelBuffer applyMask(ChannelBuffer buffer) throws Exception {
            return buffer;
        }

        @Override
        public ChannelBuffer undoMask(ChannelBuffer buffer) throws Exception {
            return buffer;
        }

        @Override
        public String toString() {
            return "IDENTITY_MASKER";
        }

    };

    public abstract ChannelBuffer applyMask(ChannelBuffer buffer) throws Exception;

    public abstract ChannelBuffer undoMask(ChannelBuffer buffer) throws Exception;
}