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/*
 * ====================================================================
 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.http.impl.conn;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;

import org.apache.commons.logging.Log;
import org.apache.http.Header;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.config.MessageConstraints;
import org.apache.http.entity.ContentLengthStrategy;
import org.apache.http.io.HttpMessageParserFactory;
import org.apache.http.io.HttpMessageWriterFactory;

class LoggingManagedHttpClientConnection extends DefaultManagedHttpClientConnection {

    private final Log log;
    private final Log headerLog;
    private final Wire wire;

    public LoggingManagedHttpClientConnection(
            final String id,
            final Log log,
            final Log headerLog,
            final Log wireLog,
            final int bufferSize,
            final int fragmentSizeHint,
            final CharsetDecoder charDecoder,
            final CharsetEncoder charEncoder,
            final MessageConstraints constraints,
            final ContentLengthStrategy incomingContentStrategy,
            final ContentLengthStrategy outgoingContentStrategy,
            final HttpMessageWriterFactory requestWriterFactory,
            final HttpMessageParserFactory responseParserFactory) {
        super(id, bufferSize, fragmentSizeHint, charDecoder, charEncoder,
                constraints, incomingContentStrategy, outgoingContentStrategy,
                requestWriterFactory, responseParserFactory);
        this.log = log;
        this.headerLog = headerLog;
        this.wire = new Wire(wireLog, id);
    }

    @Override
    public void close() throws IOException {

        if (super.isOpen()) {
            if (this.log.isDebugEnabled()) {
                this.log.debug(getId() + ": Close connection");
            }
            super.close();
        }
    }

    @Override
    public void setSocketTimeout(final int timeout) {
        if (this.log.isDebugEnabled()) {
            this.log.debug(getId() + ": set socket timeout to " + timeout);
        }
        super.setSocketTimeout(timeout);
    }

    @Override
    public void shutdown() throws IOException {
        if (this.log.isDebugEnabled()) {
            this.log.debug(getId() + ": Shutdown connection");
        }
        super.shutdown();
    }

    @Override
    protected InputStream getSocketInputStream(final Socket socket) throws IOException {
        InputStream in = super.getSocketInputStream(socket);
        if (this.wire.enabled()) {
            in = new LoggingInputStream(in, this.wire);
        }
        return in;
    }

    @Override
    protected OutputStream getSocketOutputStream(final Socket socket) throws IOException {
        OutputStream out = super.getSocketOutputStream(socket);
        if (this.wire.enabled()) {
            out = new LoggingOutputStream(out, this.wire);
        }
        return out;
    }

    @Override
    protected void onResponseReceived(final HttpResponse response) {
        if (response != null && this.headerLog.isDebugEnabled()) {
            this.headerLog.debug(getId() + " << " + response.getStatusLine().toString());
            final Header[] headers = response.getAllHeaders();
            for (final Header header : headers) {
                this.headerLog.debug(getId() + " << " + header.toString());
            }
        }
    }

    @Override
    protected void onRequestSubmitted(final HttpRequest request) {
        if (request != null && this.headerLog.isDebugEnabled()) {
            this.headerLog.debug(getId() + " >> " + request.getRequestLine().toString());
            final Header[] headers = request.getAllHeaders();
            for (final Header header : headers) {
                this.headerLog.debug(getId() + " >> " + header.toString());
            }
        }
    }

}