org.elasticsearch.hadoop.util.OsUtil Maven / Gradle / Ivy
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* Licensed to Elasticsearch under one or more contributor
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* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.hadoop.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Utility to detect different OS runtime environments
*/
public final class OsUtil {
private static final Log LOG = LogFactory.getLog(OsUtil.class);
/**
* Name of the current operating system configured in the 'os.name' system property, or null if the property
* could not be read.
*/
public static final String OS_NAME;
static {
String osName;
try {
osName = System.getProperty("os.name");
} catch (SecurityException ex) {
// For whatever reason we cannot get this property
LOG.error("Caught SecurityException reading 'os.name' system property. Defaulting to null.", ex);
osName = null;
}
OS_NAME = osName;
}
private static final String WINDOWS_PREFIX = "Windows";
/**
* True if the underlying operating system is part of the Windows Family
*/
public static final boolean IS_OS_WINDOWS = osMatches(WINDOWS_PREFIX);
private static boolean osMatches(String osPrefix) {
return OS_NAME != null && OS_NAME.startsWith(osPrefix);
}
private OsUtil() { /* No instance */ }
}