org.bonitasoft.engine.session.impl.SessionIdGenerator Maven / Gradle / Ivy
/**
* Copyright (C) 2019 Bonitasoft S.A.
* Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation
* version 2.1 of the License.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301, USA.
**/
package org.bonitasoft.engine.session.impl;
import static java.lang.Math.abs;
import java.security.SecureRandom;
/**
* @author Elias Ricken de Medeiros
* @author Matthieu Chaffotte
* @author Baptiste Mesta
*/
public class SessionIdGenerator {
private static volatile SecureRandom numberGenerator = null;
public static long getNextId() {
SecureRandom ng = numberGenerator;
if (ng == null) {
numberGenerator = ng = new SecureRandom();
}
return abs(ng.nextLong());
}
}