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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.
*/
package org.apache.dubbo.common.threadpool.manager;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.resource.Disposable;
import org.apache.dubbo.common.threadlocal.NamedInternalThreadFactory;
import org.apache.dubbo.common.utils.NamedThreadFactory;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.COMMON_UNEXPECTED_EXECUTORS_SHUTDOWN;
public class FrameworkExecutorRepository implements Disposable {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(FrameworkExecutorRepository.class);
private final ExecutorService sharedExecutor;
private final ScheduledExecutorService sharedScheduledExecutor;
private final Ring scheduledExecutors = new Ring<>();
private final ScheduledExecutorService connectivityScheduledExecutor;
private final ScheduledExecutorService cacheRefreshingScheduledExecutor;
private final ExecutorService mappingRefreshingExecutor;
public final Ring registryNotificationExecutorRing = new Ring<>();
private final Ring serviceDiscoveryAddressNotificationExecutorRing = new Ring<>();
private final ScheduledExecutorService metadataRetryExecutor;
private final ExecutorService poolRouterExecutor;
private final Ring executorServiceRing = new Ring<>();
public FrameworkExecutorRepository() {
sharedExecutor = Executors.newCachedThreadPool(new NamedThreadFactory("Dubbo-framework-shared-handler", true));
sharedScheduledExecutor = Executors.newScheduledThreadPool(8, new NamedThreadFactory("Dubbo-framework-shared-scheduler", true));
int availableProcessors = Runtime.getRuntime().availableProcessors();
for (int i = 0; i < availableProcessors; i++) {
ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(
new NamedThreadFactory("Dubbo-framework-scheduler-" + i, true));
scheduledExecutors.addItem(scheduler);
executorServiceRing.addItem(new ThreadPoolExecutor(1, 1,
0L, TimeUnit.MILLISECONDS,
new LinkedBlockingQueue<>(1024), new NamedInternalThreadFactory("Dubbo-framework-state-router-loop-" + i, true)
, new ThreadPoolExecutor.AbortPolicy()));
}
connectivityScheduledExecutor = Executors.newScheduledThreadPool(availableProcessors, new NamedThreadFactory("Dubbo-framework-connectivity-scheduler", true));
cacheRefreshingScheduledExecutor = Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("Dubbo-framework-cache-refreshing-scheduler", true));
mappingRefreshingExecutor = Executors.newFixedThreadPool(availableProcessors, new NamedThreadFactory("Dubbo-framework-mapping-refreshing-scheduler", true));
poolRouterExecutor = new ThreadPoolExecutor(1, 10, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(1024),
new NamedInternalThreadFactory("Dubbo-framework-state-router-pool-router", true), new ThreadPoolExecutor.AbortPolicy());
for (int i = 0; i < availableProcessors; i++) {
ScheduledExecutorService serviceDiscoveryAddressNotificationExecutor =
Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("Dubbo-framework-SD-address-refresh-" + i));
ScheduledExecutorService registryNotificationExecutor =
Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("Dubbo-framework-registry-notification-" + i));
serviceDiscoveryAddressNotificationExecutorRing.addItem(serviceDiscoveryAddressNotificationExecutor);
registryNotificationExecutorRing.addItem(registryNotificationExecutor);
}
metadataRetryExecutor = Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("Dubbo-framework-metadata-retry"));
}
/**
* Returns a scheduler from the scheduler list, call this method whenever you need a scheduler for a cron job.
* If your cron cannot burden the possible schedule delay caused by sharing the same scheduler, please consider define a dedicated one.
*
* @return ScheduledExecutorService
*/
public ScheduledExecutorService nextScheduledExecutor() {
return scheduledExecutors.pollItem();
}
public ExecutorService nextExecutorExecutor() {
return executorServiceRing.pollItem();
}
/**
* Scheduled executor handle registry notification.
*
* @return ScheduledExecutorService
*/
public ScheduledExecutorService getRegistryNotificationExecutor() {
return registryNotificationExecutorRing.pollItem();
}
public ScheduledExecutorService getServiceDiscoveryAddressNotificationExecutor() {
return serviceDiscoveryAddressNotificationExecutorRing.pollItem();
}
public ScheduledExecutorService getMetadataRetryExecutor() {
return metadataRetryExecutor;
}
/**
* Get the default shared thread pool.
*
* @return ExecutorService
*/
public ExecutorService getSharedExecutor() {
return sharedExecutor;
}
/**
* Get the shared schedule executor
*
* @return ScheduledExecutorService
*/
public ScheduledExecutorService getSharedScheduledExecutor() {
return sharedScheduledExecutor;
}
public ExecutorService getPoolRouterExecutor() {
return poolRouterExecutor;
}
/**
* Scheduled executor handle connectivity check task
*
* @return ScheduledExecutorService
*/
public ScheduledExecutorService getConnectivityScheduledExecutor() {
return connectivityScheduledExecutor;
}
/**
* Scheduler used to refresh file based caches from memory to disk.
*
* @return ScheduledExecutorService
*/
public ScheduledExecutorService getCacheRefreshingScheduledExecutor() {
return cacheRefreshingScheduledExecutor;
}
/**
* Executor used to run async mapping tasks
*
* @return ExecutorService
*/
public ExecutorService getMappingRefreshingExecutor() {
return mappingRefreshingExecutor;
}
@Override
public void destroy() {
logger.info("destroying framework executor repository ..");
shutdownExecutorService(poolRouterExecutor, "poolRouterExecutor");
shutdownExecutorService(metadataRetryExecutor, "metadataRetryExecutor");
// scheduledExecutors
shutdownExecutorServices(scheduledExecutors.listItems(), "scheduledExecutors");
// executorServiceRing
shutdownExecutorServices(executorServiceRing.listItems(), "executorServiceRing");
// connectivityScheduledExecutor
shutdownExecutorService(connectivityScheduledExecutor, "connectivityScheduledExecutor");
shutdownExecutorService(cacheRefreshingScheduledExecutor, "cacheRefreshingScheduledExecutor");
// shutdown share executor
shutdownExecutorService(sharedExecutor, "sharedExecutor");
shutdownExecutorService(sharedScheduledExecutor, "sharedScheduledExecutor");
// serviceDiscoveryAddressNotificationExecutorRing
shutdownExecutorServices(serviceDiscoveryAddressNotificationExecutorRing.listItems(),
"serviceDiscoveryAddressNotificationExecutorRing");
// registryNotificationExecutorRing
shutdownExecutorServices(registryNotificationExecutorRing.listItems(),
"registryNotificationExecutorRing");
}
private void shutdownExecutorServices(List executorServices, String msg) {
for (ExecutorService executorService : executorServices) {
shutdownExecutorService(executorService, msg);
}
}
private void shutdownExecutorService(ExecutorService executorService, String name) {
try {
executorService.shutdownNow();
} catch (Exception e) {
String msg = "shutdown executor service [" + name + "] failed: ";
logger.warn(COMMON_UNEXPECTED_EXECUTORS_SHUTDOWN, "", "", msg + e.getMessage(), e);
}
}
}