FormattingTuple.java

/*******************************************************************************
 * Copyright French Prime minister Office/SGMAP/DINSIC/Vitam Program (2015-2019)
 *
 * contact.vitam@culture.gouv.fr
 *
 * This software is a computer program whose purpose is to implement a digital archiving back-office system managing
 * high volumetry securely and efficiently.
 *
 * This software is governed by the CeCILL 2.1 license under French law and abiding by the rules of distribution of free
 * software. You can use, modify and/ or redistribute the software under the terms of the CeCILL 2.1 license as
 * circulated by CEA, CNRS and INRIA at the following URL "http://www.cecill.info".
 *
 * As a counterpart to the access to the source code and rights to copy, modify and redistribute granted by the license,
 * users are provided only with a limited warranty and the software's author, the holder of the economic rights, and the
 * successive licensors have only limited liability.
 *
 * In this respect, the user's attention is drawn to the risks associated with loading, using, modifying and/or
 * developing or reproducing the software by the user in light of its specific status of free software, that may mean
 * that it is complicated to manipulate, and that also therefore means that it is reserved for developers and
 * experienced professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the
 * software's suitability as regards their requirements in conditions enabling the security of their systems and/or data
 * to be ensured and, more generally, to use and operate it in the same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had knowledge of the CeCILL 2.1 license and that you
 * accept its terms.
 *******************************************************************************/
package fr.gouv.vitam.common.logging;

/**
 * Holds the results of formatting done by MessageFormatter. <br>
 * Inspired from Netty
 */
class FormattingTuple {

    static final FormattingTuple NULL = new FormattingTuple(null);

    private final String message;
    private final Throwable throwable;
    private final Object[] argArray;

    FormattingTuple(final String message) {
        this(message, null, null);
    }

    FormattingTuple(final String message, final Object[] argArray,
        final Throwable throwable) {
        this.message = message;
        this.throwable = throwable;
        if (throwable == null) {
            this.argArray = argArray;
        } else {
            this.argArray = trimmedCopy(argArray);
        }
    }

    static final Object[] trimmedCopy(final Object[] argArray) {
        if (argArray == null || argArray.length == 0) {
            throw new IllegalStateException("non-sensical empty or null argument array");
        }
        final int trimemdLen = argArray.length - 1;
        final Object[] trimmed = new Object[trimemdLen];
        System.arraycopy(argArray, 0, trimmed, 0, trimemdLen);
        return trimmed;
    }

    public final String getMessage() {
        return message;
    }

    public final Object[] getArgArray() {
        return argArray;
    }

    public final Throwable getThrowable() {
        return throwable;
    }
}