/*
* Copyright 2006-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.retry.interceptor;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.junit.Before;
import org.junit.Test;
import org.springframework.aop.framework.Advised;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.target.SingletonTargetSource;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.retry.policy.NeverRetryPolicy;
import org.springframework.retry.policy.SimpleRetryPolicy;
import org.springframework.retry.support.RetryTemplate;
import org.springframework.transaction.support.TransactionSynchronizationAdapter;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.springframework.util.ClassUtils;
public class RetryOperationsInterceptorTests {
private RetryOperationsInterceptor interceptor;
private Service service;
private ServiceImpl target;
private static int count;
private static int transactionCount;
@Before
public void setUp() throws Exception {
interceptor = new RetryOperationsInterceptor();
target = new ServiceImpl();
service = (Service) ProxyFactory.getProxy(Service.class, new SingletonTargetSource(target));
count = 0;
transactionCount = 0;
}
@Test
public void testDefaultInterceptorSunnyDay() throws Exception {
((Advised) service).addAdvice(interceptor);
service.service();
assertEquals(2, count);
}
@Test
public void testDefaultInterceptorWithRecovery() throws Exception {
RetryTemplate template = new RetryTemplate();
template.setRetryPolicy(new SimpleRetryPolicy(1, Collections
.<Class<? extends Throwable>, Boolean> singletonMap(Exception.class, true)));
interceptor.setRetryOperations(template);
interceptor.setRecoverer(new MethodInvocationRecoverer<Void>() {
public Void recover(Object[] args, Throwable cause) {
return null;
}
});
((Advised) service).addAdvice(interceptor);
service.service();
assertEquals(1, count);
}
@Test
public void testInterceptorChainWithRetry() throws Exception {
((Advised) service).addAdvice(interceptor);
final List<String> list = new ArrayList<String>();
((Advised) service).addAdvice(new MethodInterceptor() {
public Object invoke(MethodInvocation invocation) throws Throwable {
list.add("chain");
return invocation.proceed();
}
});
RetryTemplate template = new RetryTemplate();
template.setRetryPolicy(new SimpleRetryPolicy(2, Collections
.<Class<? extends Throwable>, Boolean> singletonMap(Exception.class, true)));
interceptor.setRetryOperations(template);
service.service();
assertEquals(2, count);
assertEquals(2, list.size());
}
@Test
public void testRetryExceptionAfterTooManyAttempts() throws Exception {
((Advised) service).addAdvice(interceptor);
RetryTemplate template = new RetryTemplate();
template.setRetryPolicy(new NeverRetryPolicy());
interceptor.setRetryOperations(template);
try {
service.service();
fail("Expected Exception.");
}
catch (Exception e) {
assertTrue(e.getMessage().startsWith("Not enough calls"));
}
assertEquals(1, count);
}
@Test
public void testOutsideTransaction() throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(ClassUtils
.addResourcePathToPackagePath(getClass(), "retry-transaction-test.xml"));
Object object = context.getBean("bean");
assertNotNull(object);
assertTrue(object instanceof Service);
Service bean = (Service) object;
bean.doTansactional();
assertEquals(2, count);
// Expect 2 separate transactions...
assertEquals(2, transactionCount);
context.close();
}
@Test
public void testIllegalMethodInvocationType() throws Throwable {
try {
interceptor.invoke(new MethodInvocation() {
public Method getMethod() {
return null;
}
public Object[] getArguments() {
return null;
}
public AccessibleObject getStaticPart() {
return null;
}
public Object getThis() {
return null;
}
public Object proceed() throws Throwable {
return null;
}
});
fail("IllegalStateException expected");
}
catch (IllegalStateException e) {
assertTrue("Exception message should contain MethodInvocation: " + e.getMessage(), e.getMessage().indexOf(
"MethodInvocation") >= 0);
}
}
public static interface Service {
void service() throws Exception;
void doTansactional() throws Exception;
}
public static class ServiceImpl implements Service {
private boolean enteredTransaction = false;
public void service() throws Exception {
count++;
if (count < 2) {
throw new Exception("Not enough calls: " + count);
}
}
public void doTansactional() throws Exception {
if (TransactionSynchronizationManager.isActualTransactionActive() && !enteredTransaction) {
transactionCount++;
TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronizationAdapter() {
public void beforeCompletion() {
enteredTransaction = false;
}
});
enteredTransaction = true;
}
count++;
if (count == 1) {
throw new RuntimeException("Rollback please");
}
}
}
}