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Add EurekaClientCacheManualRefresher
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...linkis-rpc/src/main/java/org/apache/linkis/rpc/conf/EurekaClientCacheManualRefresher.java
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| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.linkis.rpc.conf; | ||
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|
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| import org.apache.commons.lang.exception.ExceptionUtils; | ||
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|
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| import org.springframework.beans.factory.BeanFactory; | ||
| import org.springframework.beans.factory.annotation.Autowired; | ||
| import org.springframework.stereotype.Component; | ||
| import org.springframework.util.ReflectionUtils; | ||
|
|
||
| import java.lang.reflect.Field; | ||
| import java.time.Duration; | ||
| import java.util.List; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.atomic.AtomicBoolean; | ||
|
|
||
| import com.netflix.discovery.DiscoveryClient; | ||
| import com.netflix.discovery.TimedSupervisorTask; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| @Component | ||
| public class EurekaClientCacheManualRefresher { | ||
| private static final Logger logger = | ||
| LoggerFactory.getLogger(EurekaClientCacheManualRefresher.class); | ||
| private final AtomicBoolean isRefreshing = new AtomicBoolean(false); | ||
| private final ExecutorService refreshExecutor = Executors.newSingleThreadExecutor(); | ||
| private final String cacheRefreshTaskField = "cacheRefreshTask"; | ||
| private TimedSupervisorTask cacheRefreshTask; | ||
|
|
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| private long lastRefreshMillis = 0; | ||
| private final Duration refreshIntervalDuration = Duration.ofSeconds(3); | ||
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| @Autowired private BeanFactory beanFactory; | ||
|
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| public void refreshOnExceptions(Exception e, List<Class<? extends Exception>> clazzs) { | ||
| if (null == clazzs || clazzs.size() == 0) { | ||
| throw new IllegalArgumentException(); | ||
| } | ||
|
|
||
| if (clazzs.stream() | ||
| .anyMatch( | ||
| clazz -> clazz.isInstance(e) || clazz.isInstance(ExceptionUtils.getRootCause(e)))) { | ||
| refresh(); | ||
| } | ||
| } | ||
|
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| public void refresh() { | ||
| if (isRefreshing.compareAndSet(false, true)) { | ||
| refreshExecutor.execute( | ||
| () -> { | ||
| try { | ||
| if (System.currentTimeMillis() | ||
| <= lastRefreshMillis + refreshIntervalDuration.toMillis()) { | ||
| logger.warn( | ||
| "Not manually refresh eureka client cache as refresh interval was not exceeded:{}", | ||
| refreshIntervalDuration.getSeconds()); | ||
| return; | ||
| } | ||
|
|
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| if (null == cacheRefreshTask) { | ||
| Field field = | ||
| ReflectionUtils.findField(DiscoveryClient.class, cacheRefreshTaskField); | ||
| if (null != field) { | ||
| ReflectionUtils.makeAccessible(field); | ||
| DiscoveryClient discoveryClient = beanFactory.getBean(DiscoveryClient.class); | ||
| cacheRefreshTask = | ||
| (TimedSupervisorTask) ReflectionUtils.getField(field, discoveryClient); | ||
| } | ||
| } | ||
|
|
||
| if (null == cacheRefreshTask) { | ||
| logger.error( | ||
| "Field ({}) not found in class '{}'", | ||
| cacheRefreshTaskField, | ||
| DiscoveryClient.class.getSimpleName()); | ||
| return; | ||
| } | ||
|
|
||
| lastRefreshMillis = System.currentTimeMillis(); | ||
| cacheRefreshTask.run(); | ||
| logger.info( | ||
| "Manually refresh eureka client cache completed(DiscoveryClient.cacheRefreshTask#run())"); | ||
| } catch (Exception e) { | ||
| logger.error("An exception occurred when manually refresh eureka client cache", e); | ||
| } finally { | ||
| isRefreshing.set(false); | ||
| } | ||
| }); | ||
| } else { | ||
| logger.warn( | ||
| "Not manually refresh eureka client cache as another thread is refreshing it already"); | ||
| } | ||
| } | ||
| } |
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