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• ExceptionUtils.java

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org.glassfish.jersey.internal.util.ExceptionUtils Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2016-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
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 * If you wish your version of this file to be governed by only the CDDL or
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 * elects to include this software in this distribution under the [CDDL or GPL
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 */

package org.glassfish.jersey.internal.util;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * The Exception Utils class provide utility method for exception handling.
 *
 * @author Stepan Vavra ([email protected])
 */
public final class ExceptionUtils {

    private ExceptionUtils() {
    }

    /**
     * Gets the stack trace of the provided throwable as a string.
     *
     * @param t the exception to get the stack trace for.
     * @return the stack trace as a string.
     */
    public static String exceptionStackTraceAsString(Throwable t) {
        StringWriter sw = new StringWriter();
        t.printStackTrace(new PrintWriter(sw));
        return sw.toString();
    }

    /**
     * Based on the rethrow parameter, either rethrows the supplied exception or logs the provided message at the given level.
     *
     * @param e       the exception to rethrow if rethrow is {@code true}.
     * @param rethrow whether to rethrow an exception or just log the provided message.
     * @param logger  the logger to print the message with.
     * @param m       the message to log if rethrow is {@code false}.
     * @param level   the level of the logged message.
     * @param      the type of the exception to be conditionally rethrown.
     * @throws T if rethrow is {@code true}.
     */
    public static  void conditionallyReThrow(T e, boolean rethrow, Logger logger, String m, Level level)
            throws T {
        if (rethrow) {
            throw e;
        } else {
            // do not mask the other exception, just log this one
            logger.log(level, m, e);
        }
    }
}