spring-retry TimeoutRetryPolicy 源码
spring-retry TimeoutRetryPolicy 代码
文件路径：/src/main/java/org/springframework/retry/policy/TimeoutRetryPolicy.java
/*
* Copyright 2006-2022 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.policy;
import org.springframework.retry.RetryContext;
import org.springframework.retry.RetryPolicy;
import org.springframework.retry.context.RetryContextSupport;
/**
* A {@link RetryPolicy} that allows a retry only if it hasn't timed out. The clock is
* started on a call to {@link #open(RetryContext)}.
*
* @author Dave Syer
*
*/
@SuppressWarnings("serial")
public class TimeoutRetryPolicy implements RetryPolicy {
/**
* Default value for timeout (milliseconds).
*/
public static final long DEFAULT_TIMEOUT = 1000;
private long timeout = DEFAULT_TIMEOUT;
/**
* Setter for timeout in milliseconds. Default is {@link #DEFAULT_TIMEOUT}.
* @param timeout how long to wait until a timeout
*/
public void setTimeout(long timeout) {
this.timeout = timeout;
}
/**
* The value of the timeout.
* @return the timeout in milliseconds
*/
public long getTimeout() {
return timeout;
}
/**
* Only permits a retry if the timeout has not expired. Does not check the exception
* at all.
*
* @see org.springframework.retry.RetryPolicy#canRetry(org.springframework.retry.RetryContext)
*/
public boolean canRetry(RetryContext context) {
return ((TimeoutRetryContext) context).isAlive();
}
public void close(RetryContext context) {
}
public RetryContext open(RetryContext parent) {
return new TimeoutRetryContext(parent, timeout);
}
public void registerThrowable(RetryContext context, Throwable throwable) {
((RetryContextSupport) context).registerThrowable(throwable);
// otherwise no-op - we only time out, otherwise retry everything...
}
private static class TimeoutRetryContext extends RetryContextSupport {
private final long timeout;
private final long start;
public TimeoutRetryContext(RetryContext parent, long timeout) {
super(parent);
this.start = System.currentTimeMillis();
this.timeout = timeout;
}
public boolean isAlive() {
return (System.currentTimeMillis() - start) <= timeout;
}
}
}
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