<commit_before>/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF 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 org.apache.mina.filter.codec;

import java.net.SocketAddress;

import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.DefaultWriteRequest;
import org.apache.mina.common.IoFilter;
import org.apache.mina.common.IoFilterAdapter;
import org.apache.mina.common.IoFilterChain;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.WriteFuture;
import org.apache.mina.common.WriteRequest;
import org.apache.mina.common.WriteRequestWrapper;
import org.apache.mina.common.support.DefaultWriteFuture;
import org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput;
import org.apache.mina.filter.codec.support.SimpleProtocolEncoderOutput;
import org.apache.mina.util.SessionLog;

/**
 * An {@link IoFilter} which translates binary or protocol specific data into
 * message object and vice versa using {@link ProtocolCodecFactory},
 * {@link ProtocolEncoder}, or {@link ProtocolDecoder}.
 * 
 * @author The Apache MINA Project (<EMAIL>)
 * @version $Rev$, $Date$
 */
public class ProtocolCodecFilter extends IoFilterAdapter {
    public static final String ENCODER = ProtocolCodecFilter.class.getName()
            + ".encoder";

    public static final String DECODER = ProtocolCodecFilter.class.getName()
            + ".decoder";

    private static final String DECODER_OUT = ProtocolCodecFilter.class.getName()
            + ".decoderOut";

    private static final Class<?>[] EMPTY_PARAMS = new Class[0];

    private static final ByteBuffer EMPTY_BUFFER = ByteBuffer.wrap(new byte[0]);

    private final ProtocolCodecFactory factory;

    public ProtocolCodecFilter(ProtocolCodecFactory factory) {
        if (factory == null) {
            throw new NullPointerException("factory");
        }
        this.factory = factory;
    }

    public ProtocolCodecFilter(final ProtocolEncoder encoder,
            final ProtocolDecoder decoder) {
        if (encoder == null) {
            throw new NullPointerException("encoder");
        }
        if (decoder == null) {
            throw new NullPointerException("decoder");
        }

        this.factory = new ProtocolCodecFactory() {
            public ProtocolEncoder getEncoder() {
                return encoder;
            }

            public ProtocolDecoder getDecoder() {
                return decoder;
            }
        };
    }

    public ProtocolCodecFilter(
            final Class<? extends ProtocolEncoder> encoderClass,
            final Class<? extends ProtocolDecoder> decoderClass) {
        if (encoderClass == null) {
            throw new NullPointerException("encoderClass");
        }
        if (decoderClass == null) {
            throw new NullPointerException("decoderClass");
        }
        if (!ProtocolEncoder.class.isAssignableFrom(encoderClass)) {
            throw new IllegalArgumentException("encoderClass: "
                    + encoderClass.getName());
        }
        if (!ProtocolDecoder.class.isAssignableFrom(decoderClass)) {
            throw new IllegalArgumentException("decoderClass: "
                    + decoderClass.getName());
        }
        try {
            encoderClass.getConstructor(EMPTY_PARAMS);
        } catch (NoSuchMethodException e) {
            throw new IllegalArgumentException(
                    "encoderClass doesn't have a public default constructor.");
        }
        try {
            decoderClass.getConstructor(EMPTY_PARAMS);
        } catch (NoSuchMethodException e) {
            throw new IllegalArgumentException(
                    "decoderClass doesn't have a public default constructor.");
        }

        this.factory = new ProtocolCodecFactory() {
            public ProtocolEncoder getEncoder() throws Exception {
                return encoderClass.newInstance();
            }

            public ProtocolDecoder getDecoder() throws Exception {
                return decoderClass.newInstance();
            }
        };
    }

    @Override
    public void onPreAdd(IoFilterChain parent, String name,
            NextFilter nextFilter) throws Exception {
        if (parent.contains(ProtocolCodecFilter.class)) {
            throw new IllegalStateException(
                    "A filter chain cannot contain more than one ProtocolCodecFilter.");
        }
    }

    @Override
    public void onPostRemove(IoFilterChain parent, String name,
            NextFilter nextFilter) throws Exception {
        disposeEncoder(parent.getSession());
        disposeDecoder(parent.getSession());
        disposeDecoderOut(parent.getSession());
    }

    @Override
    public void messageReceived(NextFilter nextFilter, IoSession session,
            Object message) throws Exception {
        if (!(message instanceof ByteBuffer)) {
            nextFilter.messageReceived(session, message);
            return;
        }

        ByteBuffer in = (ByteBuffer) message;
        ProtocolDecoder decoder = getDecoder(session);
        ProtocolDecoderOutput decoderOut = getDecoderOut(session, nextFilter);

        try {
            synchronized (decoderOut) {
                decoder.decode(session, in, decoderOut);
            }
        } catch (Throwable t) {
            ProtocolDecoderException pde;
            if (t instanceof ProtocolDecoderException) {
                pde = (ProtocolDecoderException) t;
            } else {
                pde = new ProtocolDecoderException(t);
            }
            pde.setHexdump(in.getHexDump());
            throw pde;
        } finally {
            // Dispose the decoder if this session is connectionless.
            if (session.getTransportType().isConnectionless()) {
                disposeDecoder(session);
            }

            decoderOut.flush();
        }
    }

    @Override
    public void messageSent(NextFilter nextFilter, IoSession session,
            WriteRequest writeRequest) throws Exception {
        if (writeRequest instanceof EncodedWriteRequest) {
            return;<commit_msg>Fixed issue: DIRMINA-406 (ProtocolDecoder.dispose() is called for every read.) * Removed unnecessary call to ProtocolDecoder.dispose() in ProtocolCodecFilter<commit_after>/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF 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 org.apache.mina.filter.codec;

import java.net.SocketAddress;

import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.DefaultWriteRequest;
import org.apache.mina.common.IoFilter;
import org.apache.mina.common.IoFilterAdapter;
import org.apache.mina.common.IoFilterChain;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.WriteFuture;
import org.apache.mina.common.WriteRequest;
import org.apache.mina.common.WriteRequestWrapper;
import org.apache.mina.common.support.DefaultWriteFuture;
import org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput;
import org.apache.mina.filter.codec.support.SimpleProtocolEncoderOutput;
import org.apache.mina.util.SessionLog;

/**
 * An {@link IoFilter} which translates binary or protocol specific data into
 * message object and vice versa using {@link ProtocolCodecFactory},
 * {@link ProtocolEncoder}, or {@link ProtocolDecoder}.
 * 
 * @author The Apache MINA Project (<EMAIL>)
 * @version $Rev$, $Date$
 */
public class ProtocolCodecFilter extends IoFilterAdapter {
    public static final String ENCODER = ProtocolCodecFilter.class.getName()
            + ".encoder";

    public static final String DECODER = ProtocolCodecFilter.class.getName()
            + ".decoder";

    private static final String DECODER_OUT = ProtocolCodecFilter.class.getName()
            + ".decoderOut";

    private static final Class<?>[] EMPTY_PARAMS = new Class[0];

    private static final ByteBuffer EMPTY_BUFFER = ByteBuffer.wrap(new byte[0]);

    private final ProtocolCodecFactory factory;

    public ProtocolCodecFilter(ProtocolCodecFactory factory) {
        if (factory == null) {
            throw new NullPointerException("factory");
        }
        this.factory = factory;
    }

    public ProtocolCodecFilter(final ProtocolEncoder encoder,
            final ProtocolDecoder decoder) {
        if (encoder == null) {
            throw new NullPointerException("encoder");
        }
        if (decoder == null) {
            throw new NullPointerException("decoder");
        }

        this.factory = new ProtocolCodecFactory() {
            public ProtocolEncoder getEncoder() {
                return encoder;
            }

            public ProtocolDecoder getDecoder() {
                return decoder;
            }
        };
    }

    public ProtocolCodecFilter(
            final Class<? extends ProtocolEncoder> encoderClass,
            final Class<? extends ProtocolDecoder> decoderClass) {
        if (encoderClass == null) {
            throw new NullPointerException("encoderClass");
        }
        if (decoderClass == null) {
            throw new NullPointerException("decoderClass");
        }
        if (!ProtocolEncoder.class.isAssignableFrom(encoderClass)) {
            throw new IllegalArgumentException("encoderClass: "
                    + encoderClass.getName());
        }
        if (!ProtocolDecoder.class.isAssignableFrom(decoderClass)) {
            throw new IllegalArgumentException("decoderClass: "
                    + decoderClass.getName());
        }
        try {
            encoderClass.getConstructor(EMPTY_PARAMS);
        } catch (NoSuchMethodException e) {
            throw new IllegalArgumentException(
                    "encoderClass doesn't have a public default constructor.");
        }
        try {
            decoderClass.getConstructor(EMPTY_PARAMS);
        } catch (NoSuchMethodException e) {
            throw new IllegalArgumentException(
                    "decoderClass doesn't have a public default constructor.");
        }

        this.factory = new ProtocolCodecFactory() {
            public ProtocolEncoder getEncoder() throws Exception {
                return encoderClass.newInstance();
            }

            public ProtocolDecoder getDecoder() throws Exception {
                return decoderClass.newInstance();
            }
        };
    }

    @Override
    public void onPreAdd(IoFilterChain parent, String name,
            NextFilter nextFilter) throws Exception {
        if (parent.contains(ProtocolCodecFilter.class)) {
            throw new IllegalStateException(
                    "A filter chain cannot contain more than one ProtocolCodecFilter.");
        }
    }

    @Override
    public void onPostRemove(IoFilterChain parent, String name,
            NextFilter nextFilter) throws Exception {
        disposeEncoder(parent.getSession());
        disposeDecoder(parent.getSession());
        disposeDecoderOut(parent.getSession());
    }

    @Override
    public void messageReceived(NextFilter nextFilter, IoSession session,
            Object message) throws Exception {
        if (!(message instanceof ByteBuffer)) {
            nextFilter.messageReceived(session, message);
            return;
        }

        ByteBuffer in = (ByteBuffer) message;
        ProtocolDecoder decoder = getDecoder(session);
        ProtocolDecoderOutput decoderOut = getDecoderOut(session, nextFilter);

        try {
            synchronized (decoderOut) {
                decoder.decode(session, in, decoderOut);
            }
        } catch (Throwable t) {
            ProtocolDecoderException pde;
            if (t instanceof ProtocolDecoderException) {
                pde = (ProtocolDecoderException) t;
            } else {
                pde = new ProtocolDecoderException(t);
            }
            pde.setHexdump(in.getHexDump());
            throw pde;
        } finally {
            decoderOut.flush();
        }
    }

    @Override
    public void messageSent(NextFilter nextFilter, IoSession session,
            WriteRequest writeRequest) throws Exception {
        if (writeRequest instanceof EncodedWriteRequest) {
            return;
{'fraction_non_alphanumeric': 0.08149731044138236, 'fraction_numerical': 0.0011052980620440645, 'mean_word_length': 2.5006448284756253, 'pattern_counts': {'":': 0, '<': 11, '<?xml version=': 0, '>': 11, 'https://': 0, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4155586', 'n_tokens_mistral': 3289, 'n_tokens_neox': 3199, 'n_words': 941}