DefaultChannelId.java — netty Source File

Source Code

/*
 * Copyright 2013 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.channel;

import io.netty.buffer.ByteBufUtil;
import io.netty.util.internal.EmptyArrays;
import io.netty.util.internal.MacAddressUtil;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.atomic.AtomicInteger;

import static io.netty.util.internal.MacAddressUtil.defaultMachineId;
import static io.netty.util.internal.MacAddressUtil.parseMAC;
import static io.netty.util.internal.PlatformDependent.BIG_ENDIAN_NATIVE_ORDER;

/**
 * The default {@link ChannelId} implementation.
 */
public final class DefaultChannelId implements ChannelId {

    private static final long serialVersionUID = 3884076183504074063L;

    private static final InternalLogger logger = InternalLoggerFactory.getInstance(DefaultChannelId.class);
    private static final byte[] MACHINE_ID;
    private static final int PROCESS_ID_LEN = 4;
    private static final int PROCESS_ID;
    private static final int SEQUENCE_LEN = 4;
    private static final int TIMESTAMP_LEN = 8;
    private static final int RANDOM_LEN = 4;

    private static final AtomicInteger nextSequence = new AtomicInteger();

    /**
     * Returns a new {@link DefaultChannelId} instance.
     */
    public static DefaultChannelId newInstance() {
        return new DefaultChannelId(MACHINE_ID,
                                    PROCESS_ID,
                                    nextSequence.getAndIncrement(),
                                    Long.reverse(System.nanoTime()) ^ System.currentTimeMillis(),
// ... (283 more lines)