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/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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
*
* 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 com.hazelcast.client.spi.impl;
import com.hazelcast.client.spi.ClientExecutionService;
import com.hazelcast.internal.metrics.MetricsProvider;
import com.hazelcast.internal.metrics.MetricsRegistry;
import com.hazelcast.internal.metrics.Probe;
import com.hazelcast.internal.util.RuntimeAvailableProcessors;
import com.hazelcast.logging.ILogger;
import com.hazelcast.logging.LoggingService;
import com.hazelcast.spi.properties.HazelcastProperties;
import com.hazelcast.spi.properties.HazelcastProperty;
import com.hazelcast.util.executor.LoggingScheduledExecutor;
import com.hazelcast.util.executor.PoolExecutorThreadFactory;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import static com.hazelcast.internal.metrics.ProbeLevel.MANDATORY;
import static com.hazelcast.spi.properties.GroupProperty.TASK_SCHEDULER_REMOVE_ON_CANCEL;
public final class ClientExecutionServiceImpl implements ClientExecutionService, MetricsProvider {
public static final HazelcastProperty INTERNAL_EXECUTOR_POOL_SIZE
= new HazelcastProperty("hazelcast.client.internal.executor.pool.size", 3);
public static final long TERMINATE_TIMEOUT_SECONDS = 30;
private final ILogger logger;
private final ExecutorService userExecutor;
private final ScheduledExecutorService internalExecutor;
public ClientExecutionServiceImpl(String name, ClassLoader classLoader,
HazelcastProperties properties, int poolSize, LoggingService loggingService) {
int internalPoolSize = properties.getInteger(INTERNAL_EXECUTOR_POOL_SIZE);
if (internalPoolSize <= 0) {
internalPoolSize = Integer.parseInt(INTERNAL_EXECUTOR_POOL_SIZE.getDefaultValue());
}
int executorPoolSize = poolSize;
if (executorPoolSize <= 0) {
executorPoolSize = RuntimeAvailableProcessors.get();
}
logger = loggingService.getLogger(ClientExecutionService.class);
internalExecutor = new LoggingScheduledExecutor(logger, internalPoolSize,
new PoolExecutorThreadFactory(name + ".internal-", classLoader),
properties.getBoolean(TASK_SCHEDULER_REMOVE_ON_CANCEL),
new RejectedExecutionHandler() {
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
String message = "Internal executor rejected task: " + r + ", because client is shutting down...";
logger.finest(message);
throw new RejectedExecutionException(message);
}
});
userExecutor = new ThreadPoolExecutor(executorPoolSize, executorPoolSize, 0L, TimeUnit.MILLISECONDS,
new LinkedBlockingQueue(),
new PoolExecutorThreadFactory(name + ".user-", classLoader),
new RejectedExecutionHandler() {
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
String message = "User executor rejected task: " + r + ", because client is shutting down...";
logger.finest(message);
throw new RejectedExecutionException(message);
}
});
}
@Override
public ScheduledFuture schedule(Runnable command, long delay, TimeUnit unit) {
return internalExecutor.schedule(command, delay, unit);
}
@Override
public ScheduledFuture> schedule(Callable command, long delay, TimeUnit unit) {
return (ScheduledFuture>) internalExecutor.schedule(command, delay, unit);
}
@Override
public ScheduledFuture scheduleWithRepetition(Runnable command, long initialDelay, long period, TimeUnit unit) {
return internalExecutor.scheduleAtFixedRate(command, initialDelay, period, unit);
}
@Override
public void execute(Runnable command) {
internalExecutor.execute(command);
}
@Override
public ExecutorService getUserExecutor() {
return userExecutor;
}
@Probe (level = MANDATORY)
public int getUserExecutorQueueSize() {
return ((ThreadPoolExecutor) userExecutor).getQueue().size();
}
public void shutdown() {
shutdownExecutor("user", userExecutor, logger);
shutdownExecutor("internal", internalExecutor, logger);
}
public static void shutdownExecutor(String name, ExecutorService executor, ILogger logger) {
executor.shutdown();
try {
boolean success = executor.awaitTermination(TERMINATE_TIMEOUT_SECONDS, TimeUnit.SECONDS);
if (!success) {
logger.warning(name + " executor awaitTermination could not complete in " + TERMINATE_TIMEOUT_SECONDS
+ " seconds");
}
} catch (InterruptedException e) {
logger.warning(name + " executor await termination is interrupted", e);
}
}
@Override
public void provideMetrics(MetricsRegistry registry) {
registry.scanAndRegister(this, "executionService");
}
}
