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Micro Distribution of the Payara Project for IBM JDK
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) [2016-2017] Payara Foundation and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://github.com/payara/Payara/blob/master/LICENSE.txt
* See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
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*/
package fish.payara.nucleus.exec;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.Member;
import com.hazelcast.scheduledexecutor.IScheduledExecutorService;
import com.hazelcast.scheduledexecutor.IScheduledFuture;
import fish.payara.nucleus.events.HazelcastEvents;
import fish.payara.nucleus.hazelcast.HazelcastCore;
import java.io.Serializable;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.api.event.EventListener;
import org.glassfish.api.event.Events;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;
/**
* Execution Service for running Callables across the Payara Cluster also enables
* Scheduling of Callables to run on the cluster.
* @author steve
*/
@Service(name = "payara-cluster-executor")
@RunLevel(StartupRunLevel.VAL)
public class ClusterExecutionService implements EventListener {
private static final Logger logger = Logger.getLogger(ClusterExecutionService.class.getCanonicalName());
@Inject
private HazelcastCore hzCore;
@Inject
private Events events;
@PostConstruct
public void postConstruct() {
events.register(this);
}
/**
* Runs a Callable object
* @param Type of the Callable Result
* @param callable The Callable object
* @return Future for the result
*/
public Future runCallable(Callable callable) {
Future result = null;
if (hzCore.isEnabled()) {
result = hzCore.getInstance().getExecutorService(HazelcastCore.CLUSTER_EXECUTOR_SERVICE_NAME).submit(callable);
}
return result;
}
/**
* Runs a Callable object on the specified Member
* @param Type of the Callable Result
* @param memberUUID The member to run the Callable on
* @param callable The Callable object
* @return Future for the result
*/
public Future runCallable(String memberUUID, Callable callable) {
Future result = null;
if (hzCore.isEnabled()) {
Member toSubmitTo = selectMember(memberUUID);
result = hzCore.getInstance().getExecutorService(HazelcastCore.CLUSTER_EXECUTOR_SERVICE_NAME).submitToMember(callable, toSubmitTo);
}
return result;
}
/**
* Runs a Callable object on a set of members
* @param The type of the Callable result
* @param memberUUIDS A set of members to run the Callables on
* @param callable The Callable to run
* @return A map of Futures keyed by Member UUID
*/
public Map> runCallable(Collection memberUUIDS, Callable callable) {
HashMap> result = new HashMap<>(2);
if (hzCore.isEnabled()) {
Set membersToSubmit = selectMembers(memberUUIDS);
Map> results = hzCore.getInstance().getExecutorService(HazelcastCore.CLUSTER_EXECUTOR_SERVICE_NAME).submitToMembers(callable, membersToSubmit);
for (Member member : results.keySet()) {
result.put(member.getUuid(), results.get(member));
}
}
return result;
}
/**
* Runs a Callable on All members of the cluster
* @param The result of the Callable
* @param callable The Callable to run
* @return A Map of Future results keyed by member UUID
*/
public Map> runCallableAllMembers(Callable callable) {
HashMap> result = new HashMap<>(2);
if (hzCore.isEnabled()) {
// work out which members correspond to cluster UUIDS.
HazelcastInstance instance = hzCore.getInstance();
Map> results = hzCore.getInstance().getExecutorService(HazelcastCore.CLUSTER_EXECUTOR_SERVICE_NAME).submitToAllMembers(callable);
for (Member member : results.keySet()) {
result.put(member.getUuid(), results.get(member));
}
}
return result;
}
/**
* Schedules a Callable object to be run in the future
* @param The type of the result
* @param callable The Callable Object
* @param delay The delay before running the task
* @param unit The time unit of the delay
* @return A Future containing the result
*/
public ScheduledTaskFuture schedule(Callable callable, long delay, TimeUnit unit) {
ScheduledTaskFuture result = null;
if (hzCore.isEnabled()) {
IScheduledExecutorService scheduledExecutorService = hzCore.getInstance().getScheduledExecutorService(HazelcastCore.SCHEDULED_CLUSTER_EXECUTOR_SERVICE_NAME);
IScheduledFuture schedule = scheduledExecutorService.schedule(callable, delay, unit);
result = new ScheduledTaskFuture(schedule);
}
return result;
}
/**
* Schedules a Callable object to be run in the future on the specified Member
* @param The type of the result
* @param memberUUID The member to schedule the task on
* @param callable The Callable Object
* @param delay The delay before running the task
* @param unit The time unit of the delay
* @return A Future containing the result
*/
public ScheduledTaskFuture schedule(String memberUUID, Callable callable, long delay, TimeUnit unit) {
ScheduledTaskFuture result = null;
if (hzCore.isEnabled()) {
Member toSubmitTo = selectMember(memberUUID);
IScheduledExecutorService scheduledExecutorService = hzCore.getInstance().getScheduledExecutorService(HazelcastCore.SCHEDULED_CLUSTER_EXECUTOR_SERVICE_NAME);
IScheduledFuture schedule = scheduledExecutorService.scheduleOnMember(callable, toSubmitTo, delay, unit);
result = new ScheduledTaskFuture(schedule);
}
return result;
}
/**
* Schedules a Callable object to be run in the future on the specified Member
* @param The type of the result
* @param memberUUIDs The members to schedule the task on
* @param callable The Callable Object
* @param delay The delay before running the task
* @param unit The time unit of the delay
* @return A Future containing the result
*/
public Map> schedule(Collection memberUUIDs, Callable callable, long delay, TimeUnit unit) {
HashMap> result = new HashMap<>(2);
if (hzCore.isEnabled()) {
Collection toSubmitTo = selectMembers(memberUUIDs);
IScheduledExecutorService scheduledExecutorService = hzCore.getInstance().getScheduledExecutorService(HazelcastCore.SCHEDULED_CLUSTER_EXECUTOR_SERVICE_NAME);
Map> schedule = scheduledExecutorService.scheduleOnMembers(callable, toSubmitTo, delay, unit);
for (Member member : schedule.keySet()) {
result.put(member.getUuid(), new ScheduledTaskFuture<>(schedule.get(member)));
}
}
return result;
}
/**
* Schedules a Callable object to be run in the future
* @param runnable The Runnable Object
* @param delay The delay before running the task
* @param period The period for the fixed rate
* @param unit The time unit of the delay
* @return A Future containing the result
*/
public ScheduledTaskFuture scheduleAtFixedRate(Runnable runnable, long delay, long period, TimeUnit unit) {
ScheduledTaskFuture result = null;
if (hzCore.isEnabled()) {
IScheduledExecutorService scheduledExecutorService = hzCore.getInstance().getScheduledExecutorService(HazelcastCore.SCHEDULED_CLUSTER_EXECUTOR_SERVICE_NAME);
IScheduledFuture schedule = scheduledExecutorService.scheduleAtFixedRate(runnable, delay, period, unit);
result = new ScheduledTaskFuture(schedule);
}
return result;
}
/**
* Schedules a Callable object to be run in the future on the specified Member
* @param memberUUID The member to schedule the task on
* @param runnable The Runnable Object
* @param delay The delay before running the task
* @param period The period for the fixed rate
* @param unit The time unit of the delay
* @return A Future containing the result
*/
public ScheduledTaskFuture scheduleAtFixedRate(String memberUUID, Runnable runnable, long delay, long period, TimeUnit unit) {
ScheduledTaskFuture result = null;
if (hzCore.isEnabled()) {
Member toSubmitTo = selectMember(memberUUID);
IScheduledExecutorService scheduledExecutorService = hzCore.getInstance().getScheduledExecutorService(HazelcastCore.SCHEDULED_CLUSTER_EXECUTOR_SERVICE_NAME);
IScheduledFuture schedule = scheduledExecutorService.scheduleOnMemberAtFixedRate(runnable, toSubmitTo, delay, period, unit);
result = new ScheduledTaskFuture(schedule);
}
return result;
}
/**
* Schedules a Callable object to be run in the future on the specified Member
* @param memberUUIDs The members to schedule the task on
* @param runnable The Runnable Object
* @param delay The delay before running the task
* @param period The period of the fixed rate
* @param unit The time unit of the delay
* @return A Future containing the result
*/
public Map> scheduleAtFixedRate(Collection memberUUIDs, Runnable runnable, long delay, long period, TimeUnit unit) {
HashMap> result = new HashMap<>(2);
if (hzCore.isEnabled()) {
Collection toSubmitTo = selectMembers(memberUUIDs);
IScheduledExecutorService scheduledExecutorService = hzCore.getInstance().getScheduledExecutorService(HazelcastCore.SCHEDULED_CLUSTER_EXECUTOR_SERVICE_NAME);
Map> schedule = scheduledExecutorService.scheduleOnMembersAtFixedRate(runnable, toSubmitTo, delay, period, unit);
for (Member member : schedule.keySet()) {
result.put(member.getUuid(), new ScheduledTaskFuture<>(schedule.get(member)));
}
}
return result;
}
@Override
public void event(Event event) {
if (event.is(HazelcastEvents.HAZELCAST_BOOTSTRAP_COMPLETE)) {
if (hzCore.isEnabled()) {
logger.info("Payara Clustered Executor Service Enabled");
}
}
}
private Member selectMember(String memberUUID) {
Set members = hzCore.getInstance().getCluster().getMembers();
Member toSubmitTo = null;
for (Member member : members) {
if (member.getUuid().equals(memberUUID)) {
toSubmitTo = member;
break;
}
}
return toSubmitTo;
}
private Set selectMembers(Collection memberUUIDS) {
// work out which members correspond to cluster UUIDS.
HazelcastInstance instance = hzCore.getInstance();
Set members = instance.getCluster().getMembers();
Set membersToSubmit = new HashSet<>(members.size());
for (Member member : members) {
if (memberUUIDS.contains(member.getUuid())) {
membersToSubmit.add(member);
}
}
return membersToSubmit;
}
}
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