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      1 /*
      2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/conn/LoggingSessionOutputBuffer.java $
      3  * $Revision: 674186 $
      4  * $Date: 2008-07-05 05:18:54 -0700 (Sat, 05 Jul 2008) $
      5  *
      6  * ====================================================================
      7  *
      8  *  Licensed to the Apache Software Foundation (ASF) under one or more
      9  *  contributor license agreements.  See the NOTICE file distributed with
     10  *  this work for additional information regarding copyright ownership.
     11  *  The ASF licenses this file to You under the Apache License, Version 2.0
     12  *  (the "License"); you may not use this file except in compliance with
     13  *  the License.  You may obtain a copy of the License at
     14  *
     15  *      http://www.apache.org/licenses/LICENSE-2.0
     16  *
     17  *  Unless required by applicable law or agreed to in writing, software
     18  *  distributed under the License is distributed on an "AS IS" BASIS,
     19  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     20  *  See the License for the specific language governing permissions and
     21  *  limitations under the License.
     22  * ====================================================================
     23  *
     24  * This software consists of voluntary contributions made by many
     25  * individuals on behalf of the Apache Software Foundation.  For more
     26  * information on the Apache Software Foundation, please see
     27  * <http://www.apache.org/>.
     28  *
     29  */
     30 
     31 package org.apache.http.impl.conn;
     32 
     33 import java.io.IOException;
     34 
     35 import org.apache.http.io.HttpTransportMetrics;
     36 import org.apache.http.io.SessionOutputBuffer;
     37 import org.apache.http.util.CharArrayBuffer;
     38 
     39 /**
     40  * Logs all data written to the wire LOG.
     41  *
     42  * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
     43  *
     44  * @since 4.0
     45  */
     46 public class LoggingSessionOutputBuffer implements SessionOutputBuffer {
     47 
     48     /** Original data transmitter. */
     49     private final SessionOutputBuffer out;
     50 
     51     /** The wire log to use. */
     52     private final Wire wire;
     53 
     54     /**
     55      * Create an instance that wraps the specified session output buffer.
     56      * @param out The session output buffer.
     57      * @param wire The Wire log to use.
     58      */
     59     public LoggingSessionOutputBuffer(final SessionOutputBuffer out, final Wire wire) {
     60         super();
     61         this.out = out;
     62         this.wire = wire;
     63     }
     64 
     65     public void write(byte[] b, int off, int len) throws IOException {
     66         this.out.write(b,  off,  len);
     67         if (this.wire.enabled()) {
     68             this.wire.output(b, off, len);
     69         }
     70     }
     71 
     72     public void write(int b) throws IOException {
     73         this.out.write(b);
     74         if (this.wire.enabled()) {
     75             this.wire.output(b);
     76         }
     77     }
     78 
     79     public void write(byte[] b) throws IOException {
     80         this.out.write(b);
     81         if (this.wire.enabled()) {
     82             this.wire.output(b);
     83         }
     84     }
     85 
     86     public void flush() throws IOException {
     87         this.out.flush();
     88     }
     89 
     90     public void writeLine(final CharArrayBuffer buffer) throws IOException {
     91         this.out.writeLine(buffer);
     92         if (this.wire.enabled()) {
     93             String s = new String(buffer.buffer(), 0, buffer.length());
     94             this.wire.output(s + "[EOL]");
     95         }
     96     }
     97 
     98     public void writeLine(final String s) throws IOException {
     99         this.out.writeLine(s);
    100         if (this.wire.enabled()) {
    101             this.wire.output(s + "[EOL]");
    102         }
    103     }
    104 
    105     public HttpTransportMetrics getMetrics() {
    106         return this.out.getMetrics();
    107     }
    108 
    109 }
    110