/*
* 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.servicemix.jbi.audit.file;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.jbi.messaging.ExchangeStatus;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.xml.transform.TransformerException;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.servicemix.jbi.audit.AbstractAuditor;
import org.apache.servicemix.jbi.audit.AuditorException;
import org.apache.servicemix.jbi.event.ExchangeEvent;
import org.apache.servicemix.jbi.jaxp.SourceTransformer;
import org.apache.servicemix.jbi.util.FileUtil;
import org.apache.servicemix.jbi.util.MessageUtil;
import org.springframework.beans.factory.InitializingBean;
/**
* Simple implementation of a ServiceMix auditor that stores messages in files in a directory.
* Shows usage of {@link TeeInputStream} for auditing {@link StreamSource} message content.
*
* Currently, the file auditor will only store the message body for ACTIVE exchanges.
*
* @org.apache.xbean.XBean element="fileAuditor" description="The Auditor of message exchanges to a directory"
*/
public class FileAuditor extends AbstractAuditor implements InitializingBean {
private static final Log LOG = LogFactory.getLog(FileAuditor.class);
private File directory;
private FileAuditorStrategy strategy = new FileAuditorStrategyImpl();
private boolean autostart = true;
/**
* The directory used for storing the audited messages
*
* @param directory
* the directory
*/
public void setDirectory(File directory) {
if (!directory.exists()) {
LOG.info("Creating directory " + directory);
directory.mkdirs();
}
this.directory = directory;
}
/**
* {@inheritDoc}
*/
public void exchangeSent(ExchangeEvent event) {
try {
MessageExchange exchange = event.getExchange();
if (exchange.getStatus() == ExchangeStatus.ACTIVE) {
OutputStream os = getOutputStream(exchange);
writeFileHeader(os, exchange);
NormalizedMessage in = exchange.getMessage("in");
if (StreamSource.class.isAssignableFrom(in.getContent().getClass())) {
StreamSource original = (StreamSource) exchange.getMessage("in").getContent();
TeeInputStream tis = new TeeInputStream(original.getInputStream(), os);
exchange.getMessage("in").setContent(new StreamSource(tis));
} else {
MessageUtil.enableContentRereadability(in);
SourceTransformer transformer = new SourceTransformer();
transformer.toResult(in.getContent(), new StreamResult(os));
}
}
} catch (IOException e) {
LOG.error(String.format("Error occurred while storing message %s", event.getExchange().getExchangeId()), e);
} catch (TransformerException e) {
LOG.error(String.format("Error occurred while storing message %s", event.getExchange().getExchangeId()), e);
} catch (MessagingException e) {
LOG.error(String.format("Error occurred while storing message %s", event.getExchange().getExchangeId()), e);
}
}
private void writeFileHeader(OutputStream os, MessageExchange exchange) {
MessageExchangeWriter writer = new MessageExchangeWriter(os);
writer.writeMessageExchange(exchange);
writer.println();
writer.println("-- Normalized message (in) --");
writer.writeNormalizedMessage(exchange.getMessage("in"));
writer.flush();
}
/*
* Get the outputstream for writing the message content
*/
private OutputStream getOutputStream(MessageExchange exchange) throws FileNotFoundException {
File file = new File(directory, strategy.getFileName(exchange));
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
return new BufferedOutputStream(new FileOutputStream(file));
}
@Override
public int deleteExchangesByIds(String[] ids) throws AuditorException {
throw new AuditorException("deleteExchangesById(s) currently unsupported by FileAuditor");
}
@Override
public int getExchangeCount() throws AuditorException {
return FileUtil.countFilesInDirectory(directory);
}
@Override
public String[] getExchangeIdsByRange(int fromIndex, int toIndex) throws AuditorException {
throw new AuditorException("getExchangeIdsByRange currently unsupported by FileAuditor");
}
@Override
public MessageExchange[] getExchangesByIds(String[] ids) throws AuditorException {
throw new AuditorException("getExchangeByIds currently unsupported by FileAuditor");
}
/**
* {@inheritDoc}
*/
public String getDescription() {
return "File-based auditing service";
}
public void afterPropertiesSet() throws Exception {
init(getContainer());
if (autostart) {
start();
} else {
stop();
}
}
/*
* Convenience PrintWriter implementation
*/
private final class MessageExchangeWriter extends PrintWriter {
private MessageExchangeWriter(OutputStream os) {
super(os);
}
private void writeMessageExchange(MessageExchange exchange) {
println("-- Exchange " + exchange.getExchangeId() + " --");
writeProperty("endpoint", exchange.getEndpoint());
writeProperty("MEP", exchange.getPattern());
for (Object key : exchange.getPropertyNames()) {
writeProperty(key, exchange.getProperty(key.toString()));
}
}
private void writeNormalizedMessage(NormalizedMessage message) {
for (Object key : message.getPropertyNames()) {
writeProperty(key, message.getProperty(key.toString()));
}
println(); println("- content -");
}
private void writeProperty(Object key, Object value) {
println(String.format(" %s : %s", key, value));
}
}
/*
* Default FileAuditorStrategy implementation, writing audit files in a folder per day
*/
private class FileAuditorStrategyImpl implements FileAuditorStrategy {
private final DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd");
public String getFileName(MessageExchange exchange) {
return dateformat.format(new Date()) + File.separatorChar + exchange.getExchangeId().replaceAll("[:\\.]", "_");
}
}
}
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