spring-retry RetryPolicy 源码
spring-retry RetryPolicy 代码
文件路径：/src/main/java/org/springframework/retry/RetryPolicy.java
/*
* 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
*
* https://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;
import java.io.Serializable;
/**
* A {@link RetryPolicy} is responsible for allocating and managing resources needed by
* {@link RetryOperations}. The {@link RetryPolicy} allows retry operations to be aware of
* their context. Context can be internal to the retry framework, e.g. to support nested
* retries. Context can also be external, and the {@link RetryPolicy} provides a uniform
* API for a range of different platforms for the external context.
*
* @author Dave Syer
*
*/
public interface RetryPolicy extends Serializable {
/**
* @param context the current retry status
* @return true if the operation can proceed
*/
boolean canRetry(RetryContext context);
/**
* Acquire resources needed for the retry operation. The callback is passed in so that
* marker interfaces can be used and a manager can collaborate with the callback to
* set up some state in the status token.
* @param parent the parent context if we are in a nested retry.
* @return a {@link RetryContext} object specific to this policy.
*
*/
RetryContext open(RetryContext parent);
/**
* @param context a retry status created by the {@link #open(RetryContext)} method of
* this policy.
*/
void close(RetryContext context);
/**
* Called once per retry attempt, after the callback fails.
* @param context the current status object.
* @param throwable the exception to throw
*/
void registerThrowable(RetryContext context, Throwable throwable);
}
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