/**
* 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.io.StringWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
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.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
/**
*
*/
public class PrettyLoggingOutInterceptor extends AbstractPhaseInterceptor {
private static final Logger LOG = LogUtils.getL7dLogger(PrettyLoggingOutInterceptor.class);
private PrintWriter writer;
public PrettyLoggingOutInterceptor(PrintWriter w) {
super(Phase.PRE_STREAM);
addBefore(StaxOutInterceptor.class.getName());
writer = w;
}
public void handleMessage(Message message) throws Fault {
final OutputStream os = message.getContent(OutputStream.class);
if (os == null) {
return;
}
if (!LOG.isLoggable(Level.ALL)) {
return;
}
// Write the output while caching it for the log message
final CacheAndWriteOutputStream newOut = new CacheAndWriteOutputStream(os);
message.setContent(OutputStream.class, newOut);
newOut.registerCallback(new LoggingCallback());
}
public class LoggingCallback implements CachedOutputStreamCallback {
public void onFlush(CachedOutputStream cos) {
}
public void onClose(CachedOutputStream cos) {
try {
TransformerFactory tfactory = TransformerFactory.newInstance();
try {
tfactory.setAttribute("indent-number", "2");
} catch (Exception ex) {
//ignore
}
Transformer serializer;
serializer = tfactory.newTransformer();
//Setup indenting to "pretty print"
serializer.setOutputProperty(OutputKeys.INDENT, "yes");
serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
if (writer != null) {
serializer.transform(new StreamSource(cos.getInputStream()),
new StreamResult(writer));
writer.close();
} else if (LOG.isLoggable(Level.INFO)) {
StringWriter swriter = new StringWriter();
serializer.transform(new StreamSource(cos.getInputStream()),
new StreamResult(swriter));
LOG.info(swriter.toString());
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}