/**
* Creates a {@link TimerImpl}
*
* @param id The id of this timer
* @param service The timer service through which this timer was created
* @param initialExpiry The first expiry of this timer. Can be null
* @param intervalDuration The duration (in milli sec) between timeouts
* @param nextEpiry The next expiry of this timer
* @param info The info that will be passed on through the {@link javax.ejb.Timer} and will be
* available through the {@link javax.ejb.Timer#getInfo()} method
* @param persistent True if this timer is persistent. False otherwise
* @param timedObjectId
*/
protected TimerImpl(Builder builder, TimerServiceImpl service) {
assert builder.id != null : "id is null";
this.id = builder.id;
this.timedObjectId = builder.timedObjectId;
this.info = builder.info;
this.persistent = builder.persistent;
this.initialExpiration = builder.initialDate;
this.intervalDuration = builder.repeatInterval;
if (builder.newTimer && builder.nextDate == null) {
this.nextExpiration = initialExpiration;
} else {
this.nextExpiration = builder.nextDate;
}
this.previousRun = null;
this.primaryKey = builder.primaryKey;
this.timerState = builder.timerState;
this.timerService = service;
this.timedObjectInvoker = service.getInvoker();
this.handle = new TimerHandleImpl(this.id, this.timedObjectInvoker.getTimedObjectId(), service);
}
private Map<String, TimerImpl> loadTimersFromFile(
final String timedObjectId, final TimerServiceImpl timerService) {
final Map<String, TimerImpl> timers = new HashMap<String, TimerImpl>();
try {
final File file = new File(getDirectory(timedObjectId));
if (!file.exists()) {
// no timers exist yet
return timers;
} else if (!file.isDirectory()) {
ROOT_LOGGER.failToRestoreTimers(file);
return timers;
}
Unmarshaller unmarshaller = factory.createUnmarshaller(configuration);
for (File timerFile : file.listFiles()) {
FileInputStream in = null;
try {
in = new FileInputStream(timerFile);
unmarshaller.start(new InputStreamByteInput(in));
final TimerEntity entity = unmarshaller.readObject(TimerEntity.class);
// we load the legacy timer entity class, and turn it into a timer state
TimerImpl.Builder builder;
if (entity instanceof CalendarTimerEntity) {
CalendarTimerEntity c = (CalendarTimerEntity) entity;
builder =
CalendarTimer.builder()
.setScheduleExprSecond(c.getSecond())
.setScheduleExprMinute(c.getMinute())
.setScheduleExprHour(c.getHour())
.setScheduleExprDayOfWeek(c.getDayOfWeek())
.setScheduleExprDayOfMonth(c.getDayOfMonth())
.setScheduleExprMonth(c.getMonth())
.setScheduleExprYear(c.getYear())
.setScheduleExprStartDate(c.getStartDate())
.setScheduleExprEndDate(c.getEndDate())
.setScheduleExprTimezone(c.getTimezone())
.setAutoTimer(c.isAutoTimer())
.setTimeoutMethod(
CalendarTimer.getTimeoutMethod(
c.getTimeoutMethod(), timerService.getTimedObjectInvoker().getValue()));
} else {
builder = TimerImpl.builder();
}
builder
.setId(entity.getId())
.setTimedObjectId(entity.getTimedObjectId())
.setInitialDate(entity.getInitialDate())
.setRepeatInterval(entity.getInterval())
.setNextDate(entity.getNextDate())
.setPreviousRun(entity.getPreviousRun())
.setInfo(entity.getInfo())
.setPrimaryKey(entity.getPrimaryKey())
.setTimerState(entity.getTimerState())
.setPersistent(true);
timers.put(entity.getId(), builder.build(timerService));
unmarshaller.finish();
} catch (Exception e) {
ROOT_LOGGER.failToRestoreTimersFromFile(timerFile, e);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
ROOT_LOGGER.failToCloseFile(e);
}
}
}
}
} catch (Exception e) {
ROOT_LOGGER.failToRestoreTimersForObjectId(timedObjectId, e);
}
return timers;
}
/**
* Returns true if this timer is active. Else returns false.
*
* <p>A timer is considered to be "active", if its {@link TimerState} is neither of the following:
*
* <ul>
* <li>{@link TimerState#CANCELED}
* <li>{@link TimerState#EXPIRED}
* <li>has not been suspended
* </ul>
*
* <p>And if the corresponding timer service is still up
*
* <p>
*
* @return
*/
public boolean isActive() {
return timerService.isStarted()
&& !isCanceled()
&& !isExpired()
&& (timerService.isScheduled(getId()) || timerState == TimerState.CREATED);
}
/** {@inheritDoc} */
@Override
public void cancel() throws IllegalStateException, EJBException {
timerService.cancelTimer(this);
}