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

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    This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

    There is a newer version: 35.0.0.Beta1
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    /*
 * 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:
 *
 *   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 io.netty.channel;

import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.nio.AbstractNioByteChannel;
import io.netty.channel.socket.SocketChannelConfig;
import io.netty.util.internal.PlatformDependent;

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

import static io.netty.channel.ChannelOption.*;

/**
 * The default {@link SocketChannelConfig} implementation.
 */
public class DefaultChannelConfig implements ChannelConfig {

    private static final RecvByteBufAllocator DEFAULT_RCVBUF_ALLOCATOR = AdaptiveRecvByteBufAllocator.DEFAULT;
    private static final MessageSizeEstimator DEFAULT_MSG_SIZE_ESTIMATOR = DefaultMessageSizeEstimator.DEFAULT;

    private static final int DEFAULT_CONNECT_TIMEOUT = 30000;

    private static final AtomicIntegerFieldUpdater AUTOREAD_UPDATER;

    static {
        AtomicIntegerFieldUpdater autoReadUpdater =
            PlatformDependent.newAtomicIntegerFieldUpdater(DefaultChannelConfig.class, "autoRead");
        if (autoReadUpdater == null) {
            autoReadUpdater = AtomicIntegerFieldUpdater.newUpdater(DefaultChannelConfig.class, "autoRead");
        }
        AUTOREAD_UPDATER = autoReadUpdater;
    }

    protected final Channel channel;

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

    private volatile int connectTimeoutMillis = DEFAULT_CONNECT_TIMEOUT;
    private volatile int maxMessagesPerRead;
    private volatile int writeSpinCount = 16;
    @SuppressWarnings("FieldMayBeFinal")
    private volatile int autoRead = 1;
    private volatile boolean autoClose = true;
    private volatile int writeBufferHighWaterMark = 64 * 1024;
    private volatile int writeBufferLowWaterMark = 32 * 1024;

    public DefaultChannelConfig(Channel channel) {
        if (channel == null) {
            throw new NullPointerException("channel");
        }
        this.channel = channel;

        if (channel instanceof ServerChannel || channel instanceof AbstractNioByteChannel) {
            // Server channels: Accept as many incoming connections as possible.
            // NIO byte channels: Implemented to reduce unnecessary system calls even if it's > 1.
            //                    See https://github.com/netty/netty/issues/2079
            // TODO: Add some property to ChannelMetadata so we can remove the ugly instanceof
            maxMessagesPerRead = 16;
        } else {
            maxMessagesPerRead = 1;
        }
    }

    @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, MESSAGE_SIZE_ESTIMATOR);
    }

    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) {
        if (options == null) {
            throw new NullPointerException("options");
        }

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

        return setAllOptions;
    }

    @Override
    @SuppressWarnings({ "unchecked", "deprecation" })
    public  T getOption(ChannelOption option) {
        if (option == null) {
            throw new NullPointerException("option");
        }

        if (option == CONNECT_TIMEOUT_MILLIS) {
            return (T) Integer.valueOf(getConnectTimeoutMillis());
        }
        if (option == MAX_MESSAGES_PER_READ) {
            return (T) Integer.valueOf(getMaxMessagesPerRead());
        }
        if (option == WRITE_SPIN_COUNT) {
            return (T) Integer.valueOf(getWriteSpinCount());
        }
        if (option == ALLOCATOR) {
            return (T) getAllocator();
        }
        if (option == RCVBUF_ALLOCATOR) {
            return (T) getRecvByteBufAllocator();
        }
        if (option == AUTO_READ) {
            return (T) Boolean.valueOf(isAutoRead());
        }
        if (option == AUTO_CLOSE) {
            return (T) Boolean.valueOf(isAutoClose());
        }
        if (option == WRITE_BUFFER_HIGH_WATER_MARK) {
            return (T) Integer.valueOf(getWriteBufferHighWaterMark());
        }
        if (option == WRITE_BUFFER_LOW_WATER_MARK) {
            return (T) Integer.valueOf(getWriteBufferLowWaterMark());
        }
        if (option == MESSAGE_SIZE_ESTIMATOR) {
            return (T) getMessageSizeEstimator();
        }
        return null;
    }

    @Override
    @SuppressWarnings("deprecation")
    public  boolean setOption(ChannelOption option, T value) {
        validate(option, value);

        if (option == CONNECT_TIMEOUT_MILLIS) {
            setConnectTimeoutMillis((Integer) value);
        } else if (option == MAX_MESSAGES_PER_READ) {
            setMaxMessagesPerRead((Integer) value);
        } else if (option == WRITE_SPIN_COUNT) {
            setWriteSpinCount((Integer) value);
        } else if (option == ALLOCATOR) {
            setAllocator((ByteBufAllocator) value);
        } else if (option == RCVBUF_ALLOCATOR) {
            setRecvByteBufAllocator((RecvByteBufAllocator) value);
        } else if (option == AUTO_READ) {
            setAutoRead((Boolean) value);
        } else if (option == AUTO_CLOSE) {
            setAutoClose((Boolean) value);
        } else if (option == WRITE_BUFFER_HIGH_WATER_MARK) {
            setWriteBufferHighWaterMark((Integer) value);
        } else if (option == WRITE_BUFFER_LOW_WATER_MARK) {
            setWriteBufferLowWaterMark((Integer) value);
        } else if (option == MESSAGE_SIZE_ESTIMATOR) {
            setMessageSizeEstimator((MessageSizeEstimator) value);
        } else {
            return false;
        }

        return true;
    }

    protected  void validate(ChannelOption option, T value) {
        if (option == null) {
            throw new NullPointerException("option");
        }
        option.validate(value);
    }

    @Override
    public int getConnectTimeoutMillis() {
        return connectTimeoutMillis;
    }

    @Override
    public ChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) {
        if (connectTimeoutMillis < 0) {
            throw new IllegalArgumentException(String.format(
                    "connectTimeoutMillis: %d (expected: >= 0)", connectTimeoutMillis));
        }
        this.connectTimeoutMillis = connectTimeoutMillis;
        return this;
    }

    @Override
    public int getMaxMessagesPerRead() {
        return maxMessagesPerRead;
    }

    @Override
    public ChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) {
        if (maxMessagesPerRead <= 0) {
            throw new IllegalArgumentException("maxMessagesPerRead: " + maxMessagesPerRead + " (expected: > 0)");
        }
        this.maxMessagesPerRead = maxMessagesPerRead;
        return this;
    }

    @Override
    public int getWriteSpinCount() {
        return writeSpinCount;
    }

    @Override
    public ChannelConfig setWriteSpinCount(int writeSpinCount) {
        if (writeSpinCount <= 0) {
            throw new IllegalArgumentException(
                    "writeSpinCount must be a positive integer.");
        }
        this.writeSpinCount = writeSpinCount;
        return this;
    }

    @Override
    public ByteBufAllocator getAllocator() {
        return allocator;
    }

    @Override
    public ChannelConfig setAllocator(ByteBufAllocator allocator) {
        if (allocator == null) {
            throw new NullPointerException("allocator");
        }
        this.allocator = allocator;
        return this;
    }

    @Override
    public RecvByteBufAllocator getRecvByteBufAllocator() {
        return rcvBufAllocator;
    }

    @Override
    public ChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) {
        if (allocator == null) {
            throw new NullPointerException("allocator");
        }
        rcvBufAllocator = allocator;
        return this;
    }

    @Override
    public boolean isAutoRead() {
        return autoRead == 1;
    }

    @Override
    public ChannelConfig setAutoRead(boolean autoRead) {
        boolean oldAutoRead = AUTOREAD_UPDATER.getAndSet(this, autoRead ? 1 : 0) == 1;
        if (autoRead && !oldAutoRead) {
            channel.read();
        } else if (!autoRead && oldAutoRead) {
            autoReadCleared();
        }
        return this;
    }

    /**
     * Is called once {@link #setAutoRead(boolean)} is called with {@code false} and {@link #isAutoRead()} was
     * {@code true} before.
     */
    protected void autoReadCleared() { }

    @Override
    public boolean isAutoClose() {
        return autoClose;
    }

    @Override
    public ChannelConfig setAutoClose(boolean autoClose) {
        this.autoClose = autoClose;
        return this;
    }

    @Override
    public int getWriteBufferHighWaterMark() {
        return writeBufferHighWaterMark;
    }

    @Override
    public ChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) {
        if (writeBufferHighWaterMark < getWriteBufferLowWaterMark()) {
            throw new IllegalArgumentException(
                    "writeBufferHighWaterMark cannot be less than " +
                            "writeBufferLowWaterMark (" + getWriteBufferLowWaterMark() + "): " +
                            writeBufferHighWaterMark);
        }
        if (writeBufferHighWaterMark < 0) {
            throw new IllegalArgumentException(
                    "writeBufferHighWaterMark must be >= 0");
        }
        this.writeBufferHighWaterMark = writeBufferHighWaterMark;
        return this;
    }

    @Override
    public int getWriteBufferLowWaterMark() {
        return writeBufferLowWaterMark;
    }

    @Override
    public ChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) {
        if (writeBufferLowWaterMark > getWriteBufferHighWaterMark()) {
            throw new IllegalArgumentException(
                    "writeBufferLowWaterMark cannot be greater than " +
                            "writeBufferHighWaterMark (" + getWriteBufferHighWaterMark() + "): " +
                            writeBufferLowWaterMark);
        }
        if (writeBufferLowWaterMark < 0) {
            throw new IllegalArgumentException(
                    "writeBufferLowWaterMark must be >= 0");
        }
        this.writeBufferLowWaterMark = writeBufferLowWaterMark;
        return this;
    }

    @Override
    public MessageSizeEstimator getMessageSizeEstimator() {
        return msgSizeEstimator;
    }

    @Override
    public ChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) {
        if (estimator == null) {
            throw new NullPointerException("estimator");
        }
        msgSizeEstimator = estimator;
        return this;
    }
}
    
    
    
    

    




    
    
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