| /* |
| * 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.serviceregistry.diagnosis.instance; |
| |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.ScheduledThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.servicecomb.registry.DiscoveryManager; |
| import org.apache.servicecomb.serviceregistry.registry.RemoteServiceRegistry; |
| import org.apache.servicecomb.serviceregistry.registry.ServiceRegistryTaskInitializer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.eventbus.EventBus; |
| import com.netflix.config.DynamicIntProperty; |
| import com.netflix.config.DynamicPropertyFactory; |
| import com.netflix.config.DynamicStringProperty; |
| |
| public class InstanceCacheCheckTask implements ServiceRegistryTaskInitializer { |
| private static final Logger LOGGER = LoggerFactory.getLogger(InstanceCacheCheckTask.class); |
| |
| private static final int DEFAULT_DIAGNOSE_INSTANCE_CACHE_INTERVAL_IN_HOUR = 24; |
| |
| private static final String CONFIG_PREFIX = "servicecomb.service.registry.instance.diagnose."; |
| |
| public static final String MANUAL = CONFIG_PREFIX + "manual"; |
| |
| public static final String AUTO_INTERVAL = CONFIG_PREFIX + "interval"; |
| |
| // auto task |
| private ScheduledFuture<?> scheduledFuture; |
| |
| private ScheduledThreadPoolExecutor taskPool; |
| |
| private EventBus eventBus; |
| |
| private DynamicIntProperty autoCheckIntervalProperty; |
| |
| private DynamicStringProperty manualCheckProperty; |
| |
| private TimeUnit timeUnit = TimeUnit.HOURS; |
| |
| // make test easier |
| public void setTimeUnit(TimeUnit timeUnit) { |
| this.timeUnit = timeUnit; |
| } |
| |
| public void setTaskPool(ScheduledThreadPoolExecutor taskPool) { |
| this.taskPool = taskPool; |
| } |
| |
| public void setEventBus(EventBus eventBus) { |
| this.eventBus = eventBus; |
| } |
| |
| public DynamicStringProperty getManualCheckProperty() { |
| return manualCheckProperty; |
| } |
| |
| public DynamicIntProperty getAutoCheckIntervalProperty() { |
| return autoCheckIntervalProperty; |
| } |
| |
| @Override |
| public void init(RemoteServiceRegistry remoteServiceRegistry) { |
| taskPool = remoteServiceRegistry.getTaskPool(); |
| eventBus = remoteServiceRegistry.getEventBus(); |
| |
| init(); |
| } |
| |
| protected void init() { |
| startAutoTask(); |
| registerManualTask(); |
| } |
| |
| private void registerManualTask() { |
| // if manual config item changed, then run task once |
| manualCheckProperty = DynamicPropertyFactory.getInstance().getStringProperty(MANUAL, null, this::runTask); |
| } |
| |
| protected void startAutoTask() { |
| autoCheckIntervalProperty = DynamicPropertyFactory.getInstance().getIntProperty(AUTO_INTERVAL, |
| DEFAULT_DIAGNOSE_INSTANCE_CACHE_INTERVAL_IN_HOUR, |
| this::doStartAutoTask); |
| doStartAutoTask(); |
| } |
| |
| private void doStartAutoTask() { |
| if (scheduledFuture != null) { |
| scheduledFuture.cancel(false); |
| scheduledFuture = null; |
| } |
| |
| int interval = autoCheckIntervalProperty.get(); |
| if (interval <= 0) { |
| LOGGER.info("disable instance cache check task, interval={}.", interval); |
| return; |
| } |
| |
| scheduledFuture = taskPool.scheduleAtFixedRate(this::runTask, interval, interval, timeUnit); |
| } |
| |
| protected void runTask() { |
| try { |
| InstanceCacheChecker checker = new InstanceCacheChecker(DiscoveryManager.INSTANCE.getAppManager()); |
| InstanceCacheSummary instanceCacheSummary = checker.check(); |
| eventBus.post(instanceCacheSummary); |
| |
| LOGGER.info("check instance cache, result={}.", instanceCacheSummary.getStatus()); |
| } catch (Throwable e) { |
| LOGGER.error("failed check instance cache..", e); |
| } |
| } |
| } |