Package org.apache.cxf.interceptor

Source Code of org.apache.cxf.interceptor.LoggingOutInterceptor$LoggingCallback

/**
* 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.cxf.interceptor;

import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.cxf.common.injection.NoJSR250Annotations;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.io.CacheAndWriteOutputStream;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.io.CachedOutputStreamCallback;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.Phase;

/**
*
*/
@NoJSR250Annotations
public class LoggingOutInterceptor extends AbstractLoggingInterceptor {
    private static final Logger LOG = LogUtils.getLogger(LoggingOutInterceptor.class);
    private static final String LOG_SETUP = LoggingOutInterceptor.class.getName() + ".log-setup";
   
    public LoggingOutInterceptor(String phase) {
        super(phase);
        addBefore(StaxOutInterceptor.class.getName());
    }
    public LoggingOutInterceptor() {
        this(Phase.PRE_STREAM);
    }   
    public LoggingOutInterceptor(int lim) {
        this();
        limit = lim;
    }

    public LoggingOutInterceptor(PrintWriter w) {
        this();
        this.writer = w;
    }
   

    public void handleMessage(Message message) throws Fault {
        final OutputStream os = message.getContent(OutputStream.class);
        if (os == null) {
            return;
        }
        if (getLogger().isLoggable(Level.INFO) || writer != null) {
            // Write the output while caching it for the log message
            boolean hasLogged = message.containsKey(LOG_SETUP);
            if (!hasLogged) {
                message.put(LOG_SETUP, Boolean.TRUE);
                final CacheAndWriteOutputStream newOut = new CacheAndWriteOutputStream(os);
                message.setContent(OutputStream.class, newOut);
                newOut.registerCallback(new LoggingCallback(message, os));
            }
        }
    }
   
    class LoggingCallback implements CachedOutputStreamCallback {
       
        private final Message message;
        private final OutputStream origStream;
       
        public LoggingCallback(final Message msg, final OutputStream os) {
            this.message = msg;
            this.origStream = os;
        }

        public void onFlush(CachedOutputStream cos) { 
           
        }
       
        public void onClose(CachedOutputStream cos) {
            String id = (String)message.getExchange().get(LoggingMessage.ID_KEY);
            if (id == null) {
                id = LoggingMessage.nextId();
                message.getExchange().put(LoggingMessage.ID_KEY, id);
            }
            final LoggingMessage buffer
                = new LoggingMessage("Outbound Message\n---------------------------",
                                     id);
           
            Integer responseCode = (Integer)message.get(Message.RESPONSE_CODE);
            if (responseCode != null) {
                buffer.getResponseCode().append(responseCode);
            }
           
            String encoding = (String)message.get(Message.ENCODING);

            if (encoding != null) {
                buffer.getEncoding().append(encoding);
            }           
            String httpMethod = (String)message.get(Message.HTTP_REQUEST_METHOD);
            if (httpMethod != null) {
                buffer.getHttpMethod().append(httpMethod);
            }
            String address = (String)message.get(Message.ENDPOINT_ADDRESS);
            if (address != null) {
                buffer.getAddress().append(address);
            }
            String ct = (String)message.get(Message.CONTENT_TYPE);
            if (ct != null) {
                buffer.getContentType().append(ct);
            }
            Object headers = message.get(Message.PROTOCOL_HEADERS);
            if (headers != null) {
                buffer.getHeader().append(headers);
            }

            if (cos.getTempFile() == null) {
                //buffer.append("Outbound Message:\n");
                if (cos.size() > limit) {
                    buffer.getMessage().append("(message truncated to " + limit + " bytes)\n");
                }
            } else {
                buffer.getMessage().append("Outbound Message (saved to tmp file):\n");
                buffer.getMessage().append("Filename: " + cos.getTempFile().getAbsolutePath() + "\n");
                if (cos.size() > limit) {
                    buffer.getMessage().append("(message truncated to " + limit + " bytes)\n");
                }
            }
            try {
                writePayload(buffer.getPayload(), cos, encoding, ct);
            } catch (Exception ex) {
                //ignore
            }

            log(buffer.toString());
            try {
                //empty out the cache
                cos.lockOutputStream();
                cos.resetOut(null, false);
            } catch (Exception ex) {
                //ignore
            }
            message.setContent(OutputStream.class,
                               origStream);
        }
    }

    @Override
    protected Logger getLogger() {
        return LOG;
       
    }

}
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