/**
* JBoss, Home of Professional Open Source
* Copyright Red Hat, Inc., and individual contributors.
*
* Licensed 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.jboss.aerogear.unifiedpush.system;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public final class ConfigurationUtils {
private static final Logger logger = LoggerFactory.getLogger(ConfigurationUtils.class);
private ConfigurationUtils() {
// no-op
}
/**
* Try to retrieve a system property and returns null if SecurityManager blocks it.
*
* @param key Name of the system property to get the string for.
*
* @return the value of the System property
*/
public static String tryGetProperty(String key) {
return tryGetProperty(key, null);
}
/**
* Try to retrieve a system property and returns the defaultValue if SecurityManager blocks it.
*
* @param key Name of the system property to get the string for.
* @param defaultValue Value to be returned on unsuccessful operation or if the propety is not set.
*
* @return the value of the System property
*/
public static String tryGetProperty(String key, String defaultValue) {
try {
return System.getProperty(key, defaultValue);
} catch (SecurityException e) {
logger.error("Could not get value of property {} due to SecurityManager. Using null value.", key);
return null;
}
}
/**
* Try to retrieve a system property and returns null if SecurityManager blocks it.
*
* @param key Name of the system property to get the integer for.
* @return the value of the System property
*/
public static Integer tryGetIntegerProperty(String key) {
return tryGetIntegerProperty(key, null);
}
/**
* Try to retrieve a system property and returns the defaultValue if SecurityManager blocks it.
*
* @param key Name of the system property to get the integer for.
* @param defaultValue Value to be returned on unsuccessful operation or if the propety is not set.
*
* @return the value of the System property
*/
public static Integer tryGetIntegerProperty(String key, Integer defaultValue) {
try {
return Integer.getInteger(key, defaultValue);
} catch (SecurityException e) {
logger.error("Could not get value of property {} due to SecurityManager. Using null value.", key, e);
return defaultValue;
}
}
}