AbstractDnsMessage.java — netty Source File

Source Code

/*
 * Copyright 2015 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.codec.dns;

import io.netty.util.AbstractReferenceCounted;
import io.netty.util.ReferenceCountUtil;
import io.netty.util.ReferenceCounted;
import io.netty.util.ResourceLeakDetector;
import io.netty.util.ResourceLeakDetectorFactory;
import io.netty.util.ResourceLeakTracker;
import io.netty.util.internal.StringUtil;

import java.util.ArrayList;
import java.util.List;

import static io.netty.util.internal.ObjectUtil.checkNotNull;

/**
 * A skeletal implementation of {@link DnsMessage}.
 */
public abstract class AbstractDnsMessage extends AbstractReferenceCounted implements DnsMessage {

    private static final ResourceLeakDetector<DnsMessage> leakDetector =
            ResourceLeakDetectorFactory.instance().newResourceLeakDetector(DnsMessage.class);

    private static final int SECTION_QUESTION = DnsSection.QUESTION.ordinal();
    private static final int SECTION_COUNT = 4;

    private final ResourceLeakTracker<DnsMessage> leak = leakDetector.track(this);
    private short id;
    private DnsOpCode opCode;
    private boolean recursionDesired;
    private byte z;

    // To reduce the memory footprint of a message,
    // each of the following fields is a single record or a list of records.
    private Object questions;
    private Object answers;
    private Object authorities;
    private Object additionals;

    /**
     * Creates a new instance with the specified {@code id} and {@link DnsOpCode#QUERY} opCode.
     */
    protected AbstractDnsMessage(int id) {
        this(id, DnsOpCode.QUERY);
    }
// ... (413 more lines)