001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.scheduling.support;
018
019import java.lang.reflect.UndeclaredThrowableException;
020
021import org.springframework.util.Assert;
022import org.springframework.util.ErrorHandler;
023
024/**
025 * Runnable wrapper that catches any exception or error thrown from its
026 * delegate Runnable and allows an {@link ErrorHandler} to handle it.
027 *
028 * @author Juergen Hoeller
029 * @author Mark Fisher
030 * @since 3.0
031 */
032public class DelegatingErrorHandlingRunnable implements Runnable {
033
034        private final Runnable delegate;
035
036        private final ErrorHandler errorHandler;
037
038
039        /**
040         * Create a new DelegatingErrorHandlingRunnable.
041         * @param delegate the Runnable implementation to delegate to
042         * @param errorHandler the ErrorHandler for handling any exceptions
043         */
044        public DelegatingErrorHandlingRunnable(Runnable delegate, ErrorHandler errorHandler) {
045                Assert.notNull(delegate, "Delegate must not be null");
046                Assert.notNull(errorHandler, "ErrorHandler must not be null");
047                this.delegate = delegate;
048                this.errorHandler = errorHandler;
049        }
050
051        @Override
052        public void run() {
053                try {
054                        this.delegate.run();
055                }
056                catch (UndeclaredThrowableException ex) {
057                        this.errorHandler.handleError(ex.getUndeclaredThrowable());
058                }
059                catch (Throwable ex) {
060                        this.errorHandler.handleError(ex);
061                }
062        }
063
064        @Override
065        public String toString() {
066                return "DelegatingErrorHandlingRunnable for " + this.delegate;
067        }
068
069}