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/*
 * Copyright 2016 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.kqueue;

import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelOption;
import io.netty.channel.MessageSizeEstimator;
import io.netty.channel.RecvByteBufAllocator;
import io.netty.channel.WriteBufferWaterMark;
import io.netty.channel.socket.ServerSocketChannelConfig;
import io.netty.util.internal.UnstableApi;

import java.io.IOException;
import java.util.Map;

import static io.netty.channel.kqueue.KQueueChannelOption.SO_ACCEPTFILTER;
import static io.netty.channel.unix.UnixChannelOption.SO_REUSEPORT;

@UnstableApi
public class KQueueServerSocketChannelConfig extends KQueueServerChannelConfig implements ServerSocketChannelConfig {
    KQueueServerSocketChannelConfig(KQueueServerSocketChannel channel) {
        super(channel);

        // Use SO_REUSEADDR by default as java.nio does the same.
        //
        // See https://github.com/netty/netty/issues/2605
        setReuseAddress(true);
    }

    @Override
    public Map, Object> getOptions() {
        return getOptions(super.getOptions(), SO_REUSEPORT, SO_ACCEPTFILTER);
    }

    @SuppressWarnings("unchecked")
    @Override
    public  T getOption(ChannelOption option) {
        if (option == SO_REUSEPORT) {
            return (T) Boolean.valueOf(isReusePort());
        }
        if (option == SO_ACCEPTFILTER) {
            return (T) getAcceptFilter();
        }
        return super.getOption(option);
    }

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

        if (option == SO_REUSEPORT) {
            setReusePort((Boolean) value);
        } else if (option == SO_ACCEPTFILTER) {
            setAcceptFilter((AcceptFilter) value);
        } else {
            return super.setOption(option, value);
        }

        return true;
    }

    public KQueueServerSocketChannelConfig setReusePort(boolean reusePort) {
        try {
            ((KQueueServerSocketChannel) channel).socket.setReusePort(reusePort);
            return this;
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public boolean isReusePort() {
        try {
            return ((KQueueServerSocketChannel) channel).socket.isReusePort();
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public KQueueServerSocketChannelConfig setAcceptFilter(AcceptFilter acceptFilter) {
        try {
            ((KQueueServerSocketChannel) channel).socket.setAcceptFilter(acceptFilter);
            return this;
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public AcceptFilter getAcceptFilter() {
        try {
            return ((KQueueServerSocketChannel) channel).socket.getAcceptFilter();
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    @Override
    public KQueueServerSocketChannelConfig setRcvAllocTransportProvidesGuess(boolean transportProvidesGuess) {
        super.setRcvAllocTransportProvidesGuess(transportProvidesGuess);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setReuseAddress(boolean reuseAddress) {
        super.setReuseAddress(reuseAddress);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setReceiveBufferSize(int receiveBufferSize) {
        super.setReceiveBufferSize(receiveBufferSize);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setPerformancePreferences(int connectionTime, int latency, int bandwidth) {
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setBacklog(int backlog) {
        super.setBacklog(backlog);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) {
        super.setConnectTimeoutMillis(connectTimeoutMillis);
        return this;
    }

    @Override
    @Deprecated
    public KQueueServerSocketChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) {
        super.setMaxMessagesPerRead(maxMessagesPerRead);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setWriteSpinCount(int writeSpinCount) {
        super.setWriteSpinCount(writeSpinCount);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setAllocator(ByteBufAllocator allocator) {
        super.setAllocator(allocator);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) {
        super.setRecvByteBufAllocator(allocator);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setAutoRead(boolean autoRead) {
        super.setAutoRead(autoRead);
        return this;
    }

    @Override
    @Deprecated
    public KQueueServerSocketChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) {
        super.setWriteBufferHighWaterMark(writeBufferHighWaterMark);
        return this;
    }

    @Override
    @Deprecated
    public KQueueServerSocketChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) {
        super.setWriteBufferLowWaterMark(writeBufferLowWaterMark);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setWriteBufferWaterMark(WriteBufferWaterMark writeBufferWaterMark) {
        super.setWriteBufferWaterMark(writeBufferWaterMark);
        return this;
    }

    @Override
    public KQueueServerSocketChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) {
        super.setMessageSizeEstimator(estimator);
        return this;
    }
}