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• DefaultChannelConfig.java

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io.netty.channel.DefaultChannelConfig Maven / Gradle / Ivy

/*
 * Copyright 2012 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.ByteBufAllocator;
import io.netty.util.internal.ObjectUtil;

import java.util.IdentityHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;

import static io.netty.channel.ChannelOption.ALLOCATOR;
import static io.netty.channel.ChannelOption.AUTO_CLOSE;
import static io.netty.channel.ChannelOption.AUTO_READ;
import static io.netty.channel.ChannelOption.CONNECT_TIMEOUT_MILLIS;
import static io.netty.channel.ChannelOption.MAX_MESSAGES_PER_READ;
import static io.netty.channel.ChannelOption.MAX_MESSAGES_PER_WRITE;
import static io.netty.channel.ChannelOption.MESSAGE_SIZE_ESTIMATOR;
import static io.netty.channel.ChannelOption.RCVBUF_ALLOCATOR;
import static io.netty.channel.ChannelOption.SINGLE_EVENTEXECUTOR_PER_GROUP;
import static io.netty.channel.ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK;
import static io.netty.channel.ChannelOption.WRITE_BUFFER_LOW_WATER_MARK;
import static io.netty.channel.ChannelOption.WRITE_BUFFER_WATER_MARK;
import static io.netty.channel.ChannelOption.WRITE_SPIN_COUNT;
import static io.netty.util.internal.ObjectUtil.checkNotNull;
import static io.netty.util.internal.ObjectUtil.checkPositive;
import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;

/**
 * The default {@link ChannelConfig} implementation.
 */
public class DefaultChannelConfig implements ChannelConfig {
    private static final MessageSizeEstimator DEFAULT_MSG_SIZE_ESTIMATOR = DefaultMessageSizeEstimator.DEFAULT;

    private static final int DEFAULT_CONNECT_TIMEOUT = 30000;

    private static final AtomicIntegerFieldUpdater AUTOREAD_UPDATER =
            AtomicIntegerFieldUpdater.newUpdater(DefaultChannelConfig.class, "autoRead");
    private static final AtomicReferenceFieldUpdater WATERMARK_UPDATER =
            AtomicReferenceFieldUpdater.newUpdater(
                    DefaultChannelConfig.class, WriteBufferWaterMark.class, "writeBufferWaterMark");

    protected final Channel channel;

    private volatile ByteBufAllocator allocator = ByteBufAllocator.DEFAULT;
    private volatile RecvByteBufAllocator rcvBufAllocator;
    private volatile MessageSizeEstimator msgSizeEstimator = DEFAULT_MSG_SIZE_ESTIMATOR;

    private volatile int connectTimeoutMillis = DEFAULT_CONNECT_TIMEOUT;
    private volatile int writeSpinCount = 16;
    private volatile int maxMessagesPerWrite = Integer.MAX_VALUE;

    @SuppressWarnings("FieldMayBeFinal")
    private volatile int autoRead = 1;
    private volatile boolean autoClose = true;
    private volatile WriteBufferWaterMark writeBufferWaterMark = WriteBufferWaterMark.DEFAULT;
    private volatile boolean pinEventExecutor = true;

    public DefaultChannelConfig(Channel channel) {
        this(channel, new AdaptiveRecvByteBufAllocator());
    }

    protected DefaultChannelConfig(Channel channel, RecvByteBufAllocator allocator) {
        setRecvByteBufAllocator(allocator, channel.metadata());
        this.channel = channel;
    }

    @Override
    @SuppressWarnings("deprecation")
    public Map, Object> getOptions() {
        return getOptions(
                null,
                CONNECT_TIMEOUT_MILLIS, MAX_MESSAGES_PER_READ, WRITE_SPIN_COUNT,
                ALLOCATOR, AUTO_READ, AUTO_CLOSE, RCVBUF_ALLOCATOR, WRITE_BUFFER_HIGH_WATER_MARK,
                WRITE_BUFFER_LOW_WATER_MARK, WRITE_BUFFER_WATER_MARK, MESSAGE_SIZE_ESTIMATOR,
                SINGLE_EVENTEXECUTOR_PER_GROUP, MAX_MESSAGES_PER_WRITE);
    }

    protected Map, Object> getOptions(
            Map, Object> result, ChannelOption... options) {
        if (result == null) {
            result = new IdentityHashMap, Object>();
        }
        for (ChannelOption o: options) {
            result.put(o, getOption(o));
        }
        return result;
    }

    @SuppressWarnings("unchecked")
    @Override
    public boolean setOptions(Map, ?> options) {
        ObjectUtil.checkNotNull(options, "options");

        boolean setAllOptions = true;
        for (Entry, ?> e: options.entrySet()) {
            if (!setOption((ChannelOption