/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.config.bootstrap;
import org.mule.config.i18n.MessageFactory;
import org.mule.util.ClassUtils;
import org.mule.util.OrderedProperties;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* <p>
* Looks for bootstrap properties in resources named META-INF/services/org/mule/config/registry-bootstrap.properties
* inside the classpath.
* </p>
* <p>
* All found properties resources are collected and loaded during the discovery process.
* Properties are returned in the same order they were found in the classpath.
* If while loading some properties resource an exception occurs the whole process is interrupted and a
* {@link org.mule.config.bootstrap.BootstrapException} exception is raised.
* </p>
*/
public class ClassPathRegistryBootstrapDiscoverer implements RegistryBootstrapDiscoverer
{
private static final String BOOTSTRAP_PROPERTIES = "META-INF/services/org/mule/config/registry-bootstrap.properties";
private final transient Log logger = LogFactory.getLog(getClass());
/**
* {@inheritDoc}
*/
@Override
public List<Properties> discover() throws BootstrapException
{
List<Properties> bootstrapsProperties = new LinkedList<Properties>();
Enumeration<URL> allPropertiesResources = ClassUtils.getResources(BOOTSTRAP_PROPERTIES, getClass());
while (allPropertiesResources.hasMoreElements())
{
URL propertiesResource = allPropertiesResources.nextElement();
if (logger.isDebugEnabled())
{
logger.debug("Reading bootstrap properties from: " + propertiesResource.toString());
}
Properties properties = new OrderedProperties();
try
{
properties.load(propertiesResource.openStream());
}
catch (IOException e)
{
throw new BootstrapException(MessageFactory.createStaticMessage("Could not load properties from: %s", propertiesResource.toString()), e);
}
bootstrapsProperties.add(properties);
}
return bootstrapsProperties;
}
}