spring CachingOperationInvokerAdvisor 源码

2022-08-12
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springboot CachingOperationInvokerAdvisor 代码

文件路径：/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/invoker/cache/CachingOperationInvokerAdvisor.java

/*
 * Copyright 2012-2021 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.boot.actuate.endpoint.invoker.cache;

import java.util.function.Function;

import org.springframework.boot.actuate.endpoint.EndpointId;
import org.springframework.boot.actuate.endpoint.OperationType;
import org.springframework.boot.actuate.endpoint.invoke.OperationInvoker;
import org.springframework.boot.actuate.endpoint.invoke.OperationInvokerAdvisor;
import org.springframework.boot.actuate.endpoint.invoke.OperationParameters;

/**
 * {@link OperationInvokerAdvisor} to optionally provide result caching support.
 *
 * @author Stephane Nicoll
 * @since 2.0.0
 */
public class CachingOperationInvokerAdvisor implements OperationInvokerAdvisor {

	private final Function<EndpointId, Long> endpointIdTimeToLive;

	public CachingOperationInvokerAdvisor(Function<EndpointId, Long> endpointIdTimeToLive) {
		this.endpointIdTimeToLive = endpointIdTimeToLive;
	}

	@Override
	public OperationInvoker apply(EndpointId endpointId, OperationType operationType, OperationParameters parameters,
			OperationInvoker invoker) {
		if (operationType == OperationType.READ && CachingOperationInvoker.isApplicable(parameters)) {
			Long timeToLive = this.endpointIdTimeToLive.apply(endpointId);
			if (timeToLive != null && timeToLive > 0) {
				return new CachingOperationInvoker(invoker, timeToLive);
			}
		}
		return invoker;
	}

}

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所属分类： 后端技术
本文标签： Spring Boot Java Spring
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