/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.usergrid.mongo.protocol;


import java.io.IOException;
import java.nio.ByteBuffer;

import org.jboss.netty.buffer.ChannelBuffer;


public class OpMsg extends Message {

    String message;


    public OpMsg() {
        opCode = OP_MSG;
    }


    public String getMessage() {
        return message;
    }


    public void setMessage( String message ) {
        this.message = message;
    }


    @Override
    public void decode( ChannelBuffer buffer ) throws IOException {
        super.decode( buffer );
        message = readCString( buffer );
    }


    @Override
    public ChannelBuffer encode( ChannelBuffer buffer ) {
        int l = 16; // 4 ints * 4 bytes

        ByteBuffer messageBytes = getCString( message );
        l += messageBytes.capacity();

        messageLength = l;

        buffer = super.encode( buffer );

        buffer.writeBytes( messageBytes );

        return buffer;
    }


    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return "OpMsg [message=" + message + ", messageLength=" + messageLength + ", requestID=" + requestID
                + ", responseTo=" + responseTo + ", opCode=" + opCode + "]";
    }
}