org.apache.catalina.startup.CatalinaProperties Maven / Gradle / Ivy
/*
* 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.catalina.startup;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
import java.util.Properties;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
/**
* Utility class to read the bootstrap Catalina configuration.
*
* @author Remy Maucherat
*/
public class CatalinaProperties {
private static final Log log = LogFactory.getLog(CatalinaProperties.class);
private static Properties properties = null;
static {
loadProperties();
}
/**
* @param name The property name
* @return specified property value
*/
public static String getProperty(String name) {
return properties.getProperty(name);
}
/**
* Load properties.
*/
private static void loadProperties() {
InputStream is = null;
try {
String configUrl = System.getProperty("catalina.config");
if (configUrl != null) {
is = (new URL(configUrl)).openStream();
}
} catch (Throwable t) {
handleThrowable(t);
}
if (is == null) {
try {
File home = new File(Bootstrap.getCatalinaBase());
File conf = new File(home, "conf");
File propsFile = new File(conf, "catalina.properties");
is = new FileInputStream(propsFile);
} catch (Throwable t) {
handleThrowable(t);
}
}
if (is == null) {
try {
is = CatalinaProperties.class.getResourceAsStream
("/org/apache/catalina/startup/catalina.properties");
} catch (Throwable t) {
handleThrowable(t);
}
}
if (is != null) {
try {
properties = new Properties();
properties.load(is);
} catch (Throwable t) {
handleThrowable(t);
log.warn(t);
} finally {
try {
is.close();
} catch (IOException ioe) {
log.warn("Could not close catalina.properties", ioe);
}
}
}
if ((is == null)) {
// Do something
log.warn("Failed to load catalina.properties");
// That's fine - we have reasonable defaults.
properties = new Properties();
}
// Register the properties as system properties
Enumeration enumeration = properties.propertyNames();
while (enumeration.hasMoreElements()) {
String name = (String) enumeration.nextElement();
String value = properties.getProperty(name);
if (value != null) {
System.setProperty(name, value);
}
}
}
// Copied from ExceptionUtils since that class is not visible during start
private static void handleThrowable(Throwable t) {
if (t instanceof ThreadDeath) {
throw (ThreadDeath) t;
}
if (t instanceof VirtualMachineError) {
throw (VirtualMachineError) t;
}
// All other instances of Throwable will be silently swallowed
}
}