001/*
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2024, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014
015package ch.qos.logback.core.pattern.color;
016
017import ch.qos.logback.core.pattern.DynamicConverter;
018import ch.qos.logback.core.spi.ContextAwareBase;
019import ch.qos.logback.core.util.OptionHelper;
020
021import java.util.function.Supplier;
022
023/**
024 *
025 * <p>Implements the {@link Supplier} interface in order to cater for legacy code using the class name
026 * of a converter.
027 * </p>
028 * <p>Should not be used in non-legacy code.</p>
029 */
030public class ConverterSupplierByClassName extends ContextAwareBase implements Supplier<DynamicConverter> {
031
032    String conversionWord;
033    String converterClassStr;
034
035    public ConverterSupplierByClassName(String conversionWord, String converterClassStr) {
036        this.conversionWord = conversionWord;
037        this.converterClassStr = converterClassStr;
038    }
039
040    @Override
041    public DynamicConverter get() {
042        try {
043            return (DynamicConverter) OptionHelper.instantiateByClassName(converterClassStr, DynamicConverter.class, context);
044        } catch (Exception e) {
045            addError("Failed to instantiate converter class [" + converterClassStr + "] for conversion word ["+conversionWord+"]", e);
046            return null;
047        }
048    }
049}