001/* 002 * Copyright 2002-2013 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.InvocationTargetException; 020 021import org.apache.commons.logging.Log; 022import org.apache.commons.logging.LogFactory; 023 024import org.springframework.beans.factory.BeanClassLoaderAware; 025import org.springframework.beans.factory.InitializingBean; 026import org.springframework.beans.support.ArgumentConvertingMethodInvoker; 027import org.springframework.util.ClassUtils; 028 029/** 030 * Adapter that implements the {@link Runnable} interface as a configurable 031 * method invocation based on Spring's MethodInvoker. 032 * 033 * <p>Inherits common configuration properties from 034 * {@link org.springframework.util.MethodInvoker}. 035 * 036 * @author Juergen Hoeller 037 * @since 1.2.4 038 * @see java.util.concurrent.Executor#execute(Runnable) 039 */ 040public class MethodInvokingRunnable extends ArgumentConvertingMethodInvoker 041 implements Runnable, BeanClassLoaderAware, InitializingBean { 042 043 protected final Log logger = LogFactory.getLog(getClass()); 044 045 private ClassLoader beanClassLoader = ClassUtils.getDefaultClassLoader(); 046 047 048 @Override 049 public void setBeanClassLoader(ClassLoader classLoader) { 050 this.beanClassLoader = classLoader; 051 } 052 053 @Override 054 protected Class<?> resolveClassName(String className) throws ClassNotFoundException { 055 return ClassUtils.forName(className, this.beanClassLoader); 056 } 057 058 @Override 059 public void afterPropertiesSet() throws ClassNotFoundException, NoSuchMethodException { 060 prepare(); 061 } 062 063 064 @Override 065 public void run() { 066 try { 067 invoke(); 068 } 069 catch (InvocationTargetException ex) { 070 logger.error(getInvocationFailureMessage(), ex.getTargetException()); 071 // Do not throw exception, else the main loop of the scheduler might stop! 072 } 073 catch (Throwable ex) { 074 logger.error(getInvocationFailureMessage(), ex); 075 // Do not throw exception, else the main loop of the scheduler might stop! 076 } 077 } 078 079 /** 080 * Build a message for an invocation failure exception. 081 * @return the error message, including the target method name etc 082 */ 083 protected String getInvocationFailureMessage() { 084 return "Invocation of method '" + getTargetMethod() + 085 "' on target class [" + getTargetClass() + "] failed"; 086 } 087 088}