001/* 002 * Copyright 2002-2017 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.lang.Nullable; 028import org.springframework.util.ClassUtils; 029 030/** 031 * Adapter that implements the {@link Runnable} interface as a configurable 032 * method invocation based on Spring's MethodInvoker. 033 * 034 * <p>Inherits common configuration properties from 035 * {@link org.springframework.util.MethodInvoker}. 036 * 037 * @author Juergen Hoeller 038 * @since 1.2.4 039 * @see java.util.concurrent.Executor#execute(Runnable) 040 */ 041public class MethodInvokingRunnable extends ArgumentConvertingMethodInvoker 042 implements Runnable, BeanClassLoaderAware, InitializingBean { 043 044 protected final Log logger = LogFactory.getLog(getClass()); 045 046 @Nullable 047 private ClassLoader beanClassLoader = ClassUtils.getDefaultClassLoader(); 048 049 050 @Override 051 public void setBeanClassLoader(ClassLoader classLoader) { 052 this.beanClassLoader = classLoader; 053 } 054 055 @Override 056 protected Class<?> resolveClassName(String className) throws ClassNotFoundException { 057 return ClassUtils.forName(className, this.beanClassLoader); 058 } 059 060 @Override 061 public void afterPropertiesSet() throws ClassNotFoundException, NoSuchMethodException { 062 prepare(); 063 } 064 065 066 @Override 067 public void run() { 068 try { 069 invoke(); 070 } 071 catch (InvocationTargetException ex) { 072 logger.error(getInvocationFailureMessage(), ex.getTargetException()); 073 // Do not throw exception, else the main loop of the scheduler might stop! 074 } 075 catch (Throwable ex) { 076 logger.error(getInvocationFailureMessage(), ex); 077 // Do not throw exception, else the main loop of the scheduler might stop! 078 } 079 } 080 081 /** 082 * Build a message for an invocation failure exception. 083 * @return the error message, including the target method name etc 084 */ 085 protected String getInvocationFailureMessage() { 086 return "Invocation of method '" + getTargetMethod() + 087 "' on target class [" + getTargetClass() + "] failed"; 088 } 089 090}