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package act.job;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.Act;
import act.Destroyable;
import act.app.App;
import act.app.AppServiceBase;
import act.app.AppThreadFactory;
import act.app.event.SysEventId;
import act.event.OnceEventListenerBase;
import act.event.SysEventListenerBase;
import act.mail.MailerContext;
import act.util.ProgressGauge;
import act.util.SimpleProgressGauge;
import org.joda.time.DateTime;
import org.joda.time.Seconds;
import org.osgl.$;
import org.osgl.exception.NotAppliedException;
import org.osgl.logging.LogManager;
import org.osgl.logging.Logger;
import org.osgl.util.C;
import org.osgl.util.E;
import org.osgl.util.S;
import org.rythmengine.utils.Time;
import java.util.EventObject;
import java.util.Map;
import java.util.concurrent.*;
public class JobManager extends AppServiceBase<JobManager> {
private static final Logger LOGGER = LogManager.get(JobManager.class);
private ScheduledThreadPoolExecutor executor;
private ConcurrentMap<String, Job> jobs = new ConcurrentHashMap<String, Job>();
private ConcurrentMap<String, ScheduledFuture> scheduled = new ConcurrentHashMap<>();
static String sysEventJobId(SysEventId eventId) {
return S.concat("__act_sys__", eventId.toString().toLowerCase());
}
public JobManager(App app) {
super(app);
initExecutor(app);
for (SysEventId sysEventId : SysEventId.values()) {
createSysEventListener(sysEventId);
}
}
@Override
protected void releaseResources() {
LOGGER.trace("release job manager resources");
for (Job job : jobs.values()) {
job.destroy();
}
jobs.clear();
executor.getQueue().clear();
executor.shutdownNow();
}
public <T> Future<T> now(Callable<T> callable) {
return now(randomJobId(), callable);
}
public <T> Future<T> now(String jobId, final Callable<T> callable) {
final Job job = wrap(jobId, callable);
return executor().submit(new Callable<T>() {
@Override
public T call() throws Exception {
job.run();
if (null != job.callableException) {
throw job.callableException;
}
return (T) job.callableResult;
}
});
}
public void now(Runnable runnable) {
now(randomJobId(), runnable);
}
public void now(String jobId, Runnable runnable) {
executor().submit(wrap(jobId, runnable));
}
public String now($.Function<ProgressGauge, ?> worker) {
return now(randomJobId(), worker);
}
public String now(String jobId, $.Function<ProgressGauge, ?> worker) {
Job job = wrap(jobId, worker);
executor().submit(job);
return job.id();
}
/**
* Prepare a job from worker. This function will return
* a job ID and can be used to feed into the {@link #now(String)}
* call
*
* @param worker the worker
* @return the job ID allocated
*/
public String prepare($.Function<ProgressGauge, ?> worker) {
Job job = wrap(worker);
return job.id();
}
/**
* Run a job by ID now
* @param jobId the job ID
* @see #prepare($.Function)
*/
public void now(String jobId) {
Job job = $.requireNotNull(jobById(jobId));
executor().submit(job);
}
public <T> Future<T> delay(Callable<T> callable, long delay, TimeUnit timeUnit) {
return executor().schedule(callable, delay, timeUnit);
}
public void delay(Runnable runnable, long delay, TimeUnit timeUnit) {
executor().schedule(wrap(runnable), delay, timeUnit);
}
public <T> Future<T> delay(Callable<T> callable, String delay) {
int seconds = parseTime(delay);
return executor().schedule(callable, seconds, TimeUnit.SECONDS);
}
public void delay(Runnable runnable, String delay) {
int seconds = parseTime(delay);
executor().schedule(wrap(runnable), seconds, TimeUnit.SECONDS);
}
public void every(String id, Runnable runnable, String interval) {
JobTrigger.every(interval, false).schedule(this, Job.multipleTimes(id, runnable, this));
}
public void every(Runnable runnable, String interval) {
JobTrigger.every(interval, false).schedule(this, Job.multipleTimes(runnable, this));
}
public void every(Runnable runnable, long interval, TimeUnit timeUnit) {
JobTrigger.every(interval, timeUnit, false).schedule(this, Job.multipleTimes(runnable, this));
}
public void every(String id, Runnable runnable, long interval, TimeUnit timeUnit) {
JobTrigger.every(interval, timeUnit, false).schedule(this, Job.multipleTimes(id, runnable, this));
}
public void fixedDelay(Runnable runnable, String interval) {
JobTrigger.every(interval, false).schedule(this, Job.multipleTimes(runnable, this));
}
public void fixedDelay(String id, Runnable runnable, String interval) {
JobTrigger.every(interval, false).schedule(this, Job.multipleTimes(id, runnable, this));
}
public void fixedDelay(Runnable runnable, long interval, TimeUnit timeUnit) {
JobTrigger.fixedDelay(interval, timeUnit, false).schedule(this, Job.multipleTimes(runnable, this));
}
public void fixedDelay(String id, Runnable runnable, long interval, TimeUnit timeUnit) {
JobTrigger.fixedDelay(interval, timeUnit, false).schedule(this, Job.multipleTimes(id, runnable, this));
}
private int parseTime(String timeDuration) {
if (timeDuration.startsWith("${") && timeDuration.endsWith("}")) {
timeDuration = app().config().get(timeDuration.substring(2, timeDuration.length() - 1));
}
return Time.parseDuration(timeDuration);
}
public void on(DateTime instant, Runnable runnable) {
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("schedule runnable[%s] on %s", runnable, instant);
}
DateTime now = DateTime.now();
E.illegalArgumentIf(instant.isBefore(now));
Seconds seconds = Seconds.secondsBetween(now, instant);
executor().schedule(wrap(runnable), seconds.getSeconds(), TimeUnit.SECONDS);
}
public <T> Future<T> on(DateTime instant, Callable<T> callable) {
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("schedule callable[%s] on %s", callable, instant);
}
DateTime now = DateTime.now();
E.illegalArgumentIf(instant.isBefore(now));
Seconds seconds = Seconds.secondsBetween(now, instant);
return executor().schedule(callable, seconds.getSeconds(), TimeUnit.SECONDS);
}
public void on(SysEventId sysEvent, final Runnable runnable) {
on(sysEvent, runnable, false);
}
public void on(SysEventId sysEvent, final Runnable runnable, boolean runImmediatelyIfEventDispatched) {
on(sysEvent, runnable.toString(), runnable, runImmediatelyIfEventDispatched);
}
public void post(SysEventId sysEvent, final Runnable runnable) {
post(sysEvent, runnable, false);
}
public void post(SysEventId sysEvent, final Runnable runnable, boolean runImmediatelyIfEventDispatched) {
Job job = jobById(sysEventJobId(sysEvent));
if (null == job) {
processDelayedJob(wrap(runnable), runImmediatelyIfEventDispatched);
} else {
job.addFollowingJob(Job.once(runnable, this));
}
}
public void on(SysEventId sysEvent, String jobId, final Runnable runnable) {
on(sysEvent, jobId, runnable, false);
}
public void on(SysEventId sysEvent, String jobId, final Runnable runnable, boolean runImmediatelyIfEventDispatched) {
boolean traceEnabled = LOGGER.isTraceEnabled();
if (traceEnabled) {
LOGGER.trace("binding job[%s] to app event: %s, run immediately if event dispatched: %s", jobId, sysEvent, runImmediatelyIfEventDispatched);
}
Job job = jobById(sysEventJobId(sysEvent));
if (null == job) {
if (traceEnabled) {
LOGGER.trace("process delayed job: %s", jobId);
}
processDelayedJob(wrap(runnable), runImmediatelyIfEventDispatched);
} else {
if (traceEnabled) {
LOGGER.trace("schedule job: %s", jobId);
}
job.addPrecedenceJob(Job.once(jobId, runnable, this));
}
}
public void post(SysEventId sysEvent, String jobId, final Runnable runnable) {
post(sysEvent, jobId, runnable, false);
}
public void post(SysEventId sysEvent, String jobId, final Runnable runnable, boolean runImmediatelyIfEventDispatched) {
Job job = jobById(sysEventJobId(sysEvent));
if (null == job) {
processDelayedJob(wrap(runnable), runImmediatelyIfEventDispatched);
} else {
job.addFollowingJob(Job.once(jobId, runnable, this));
}
}
public void alongWith(SysEventId sysEvent, String jobId, final Runnable runnable) {
Job job = jobById(sysEventJobId(sysEvent));
if (null == job) {
processDelayedJob(wrap(runnable), false);
} else {
job.addParallelJob(Job.once(jobId, runnable, this));
}
}
@Override
protected void warn(String format, Object... args) {
super.warn(format, args);
}
private void processDelayedJob(final Job job, boolean runImmediatelyIfEventDispatched) {
if (runImmediatelyIfEventDispatched) {
try {
job.run();
} catch (Exception e) {
Act.LOGGER.error(e, "Error running job");
}
} else {
now(job);
}
}
/**
* Cancel a scheduled Job by ID
* @param jobId the job Id
*/
public void cancel(String jobId) {
Job job = jobById(jobId);
if (null != job) {
removeJob(job);
} else {
ScheduledFuture future = scheduled.remove(jobId);
if (null != future) {
future.cancel(true);
}
}
}
public void beforeAppStart(final Runnable runnable) {
on(SysEventId.START, runnable);
}
public void afterAppStart(final Runnable runnable) {
post(SysEventId.START, runnable);
}
public void beforeAppStop(final Runnable runnable) {
on(SysEventId.STOP, runnable);
}
public SimpleProgressGauge progressGauge(String jobId) {
return jobById(jobId).progress();
}
public void setJobProgressGauge(String jobId, ProgressGauge progressGauge) {
Job job = jobById(jobId);
if (null == job) {
LOGGER.warn("cannot find job by Id: " + jobId);
} else {
job.setProgressGauge(progressGauge);
}
}
C.List<Job> jobs() {
return C.list(jobs.values());
}
C.List<Job> virtualJobs() {
final JobManager jobManager = Act.jobManager();
return C.list(scheduled.entrySet()).map(new $.Transformer<Map.Entry<String, ScheduledFuture>, Job>() {
@Override
public Job transform(Map.Entry<String, ScheduledFuture> entry) {
return Job.virtualJob(entry.getKey(), jobManager);
}
});
}
void futureScheduled(String id, ScheduledFuture future) {
scheduled.putIfAbsent(id, future);
}
Job jobById(String id) {
Job job = jobs.get(id);
if (null == job) {
ScheduledFuture future = scheduled.get(id);
if (null != future) {
return new Job(id, Act.jobManager());
}
Act.LOGGER.warn("cannot find job by id: %s", id);
}
return job;
}
void addJob(Job job) {
String id = job.id();
E.illegalStateIf(jobs.containsKey(id), "job already registered: %s", id);
jobs.put(id, job);
}
void removeJob(Job job) {
String id = job.id();
jobs.remove(id);
ScheduledFuture future = scheduled.remove(id);
if (null != future) {
future.cancel(true);
}
}
ScheduledThreadPoolExecutor executor() {
return executor;
}
private void initExecutor(App app) {
int poolSize = app.config().jobPoolSize();
executor = new ScheduledThreadPoolExecutor(poolSize, new AppThreadFactory("jobs"), new ThreadPoolExecutor.AbortPolicy());
executor.setRemoveOnCancelPolicy(true);
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("init executor with thread pool: %s", poolSize);
}
}
private void createSysEventListener(SysEventId sysEventId) {
String jobId = sysEventJobId(sysEventId);
Job job = new Job(jobId, this);
app().eventBus().bind(sysEventId, new _SysEventListener(jobId, job));
}
private static class _SysEventListener extends SysEventListenerBase {
private Runnable worker;
_SysEventListener(String id, Runnable worker) {
super(id);
this.worker = $.NPE(worker);
}
@Override
public void on(EventObject event) throws Exception {
worker.run();
}
@Override
protected void releaseResources() {
if (null != worker && worker instanceof Destroyable) {
((Destroyable) worker).destroy();
}
}
}
private Job wrap(Runnable runnable) {
return new ContextualJob(randomJobId(), runnable);
}
private Job wrap(String name, Runnable runnable) {
return new ContextualJob(name, runnable);
}
private Job wrap(Callable callable) {
return new ContextualJob(randomJobId(), callable);
}
private Job wrap(String name, Callable callable) {
return new ContextualJob(name, callable);
}
private Job wrap($.Function<ProgressGauge, ?> worker) {
return new ContextualJob(randomJobId(), worker);
}
private Job wrap(String name, $.Function<ProgressGauge, ?> worker) {
return new ContextualJob(name, worker);
}
private class ContextualJob extends Job {
private JobContext origin_ = JobContext.copy();
ContextualJob(String id, final Callable<?> callable) {
super(id, JobManager.this, callable);
}
ContextualJob(String id, final Runnable runnable) {
super(id, JobManager.this, new $.F0() {
@Override
public Object apply() throws NotAppliedException, $.Break {
runnable.run();
return null;
}
}, true);
foo();
}
ContextualJob(String id, final $.Function<ProgressGauge, ?> worker) {
super(id, JobManager.this, worker);
foo();
}
@Override
protected void _before() {
// copy the JobContext of parent thread into the current thread
JobContext.init(origin_);
}
@Override
protected void _finally() {
JobContext.clear();
removeJob(this);
}
private void foo() {
app().eventBus().once(MailerContext.InitEvent.class, new OnceEventListenerBase<MailerContext.InitEvent>() {
@Override
public boolean tryHandle(MailerContext.InitEvent event) throws Exception {
MailerContext mailerContext = MailerContext.current();
if (null != mailerContext) {
_before();
return true;
}
return true;
}
});
}
}
private String randomJobId() {
return app().cuid() + S.random(4);
}
}