| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.servicecomb.pack.omega.transaction.annotations; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| |
| /* |
| * Indicates the annotated method will start a sub-transaction. <br> |
| * It is suggested to use the Spring Transactional annotation to wrap the sub-transaction method. |
| * A <code>@Compensable</code> method should satisfy below requirements: |
| * <ol> |
| * <li>all parameters are serialized</li> |
| * <li>is idempotent</li> |
| * <li>the object instance which @Compensable method resides in should be stateless</li> |
| * <li>if compensationMethod exists, both methods must be commutative, see this |
| * <a href="https://servicecomb.apache.org/docs/distributed_saga_2/">link</a>.</li> |
| * </ol> |
| */ |
| @Target(ElementType.METHOD) |
| @Retention(RetentionPolicy.RUNTIME) |
| public @interface Compensable { |
| |
| /* |
| * The retires number of the compensable method. |
| * Default value is 0, which means never retry it |
| * value is -1, which means retry it until succeed |
| * value > 0, which means the retry number |
| * value < -1, an IllegalArgumentException will be thrown |
| * |
| * @return |
| */ |
| int retries() default 0; |
| |
| /* |
| * Compensation method name.<br> |
| * A compensation method should satisfy below requirements: |
| * <ol> |
| * <li>has same parameter list as @Compensable method's</li> |
| * <li>all parameters are serialized</li> |
| * <li>is idempotent</li> |
| * <li>be in the same class as @Compensable method is in</li> |
| * </ol> |
| * |
| * @return |
| */ |
| String compensationMethod() default ""; |
| |
| int retryDelayInMilliseconds() default 0; |
| |
| /* |
| * <code>@Compensable</code> method timeout, in seconds. <br> |
| * Default value is 0, which means never timeout. |
| * |
| * @return |
| */ |
| int timeout() default 0; |
| } |