public void ScheduledJobShouldExecute()
{
JobScheduleElement element = new JobScheduleElement()
{
Name = "Test",
RepeatHours = 24,
StartOn = DateTime.Now.AddMilliseconds(-500)
};
Assert.IsTrue(ScheduledJob.ShouldExecute(element, 1000, DateTime.UtcNow));
element.StartOn = DateTime.Now.AddMilliseconds(-1001);
Assert.IsFalse(ScheduledJob.ShouldExecute(element, 1000, DateTime.UtcNow));
element.StartOn = DateTime.Now.AddHours(1);
Assert.IsFalse(ScheduledJob.ShouldExecute(element, 1000, DateTime.UtcNow));
element.StartOn = DateTime.Now;
Assert.IsTrue(ScheduledJob.ShouldExecute(element, 1000, DateTime.UtcNow));
}
/// <summary>
/// Gets a value indicating whether the schedule identified by the given element is ready for execution
/// given the provided heartbeat window and current date.
/// </summary>
/// <param name="element">The element to check.</param>
/// <param name="heartbeat">The heartbeat window, in milliseconds.</param>
/// <param name="now">The current date, in UTC.</param>
/// <param name="executeOn">The concrete execution date, if the job should be executed.</param>
/// <returns>True if the schedule should be executed now, false otherwise.</returns>
public static bool ShouldExecute(JobScheduleElement element, long heartbeat, DateTime now, out DateTime? executeOn)
{
if (element == null)
{
throw new ArgumentNullException("element", "element cannot be null");
}
if (element.RepeatHours <= 0)
{
throw new ConfigurationErrorsException("A job schedule's repeatHours must be greater than 0.", element.ElementInformation.Source, element.ElementInformation.LineNumber);
}
if (now.Kind != DateTimeKind.Utc)
{
throw new ArgumentException("now must be in UTC.", "now");
}
executeOn = null;
bool shouldExecute = false;
DateTime startOn = element.StartOn.ToUniversalTime();
if (now >= startOn)
{
double milliseconds = now.Subtract(startOn).TotalMilliseconds;
double repeatMilliseconds = element.RepeatHours * 3600000;
if (repeatMilliseconds <= heartbeat)
{
throw new ConfigurationErrorsException(String.Format(CultureInfo.InvariantCulture, "A job schedule's repeatHours must be greater than the job runner's heartbeat ({0} milliseconds).", heartbeat), element.ElementInformation.Source, element.ElementInformation.LineNumber);
}
int repeats = (int)Math.Floor(milliseconds / repeatMilliseconds);
executeOn = startOn.AddMilliseconds(((repeats + 1) * repeatMilliseconds) - repeatMilliseconds);
DateTime nextHeartbeat = now.AddMilliseconds(heartbeat);
DateTime prevHeartbeat = now.AddMilliseconds(-1 * heartbeat);
shouldExecute = executeOn >= prevHeartbeat && executeOn < nextHeartbeat;
}
return shouldExecute;
}
/// <summary>
/// Creates a new scheduled job record for storing in the <see cref="IJobStore"/>.
/// </summary>
/// <param name="scheduleElement">The configured schedule element to create the record for.</param>
/// <param name="jobElement">The configured job element to create the record for.</param>
/// <param name="now">The queue and start date to create the record for.</param>
/// <returns>A new scheduled job record.</returns>
public static JobRecord CreateRecord(JobScheduleElement scheduleElement, JobScheduledJobElement jobElement, DateTime now)
{
if (scheduleElement == null)
{
throw new ArgumentNullException("scheduleElement", "scheduleElement cannot be null.");
}
if (String.IsNullOrEmpty(scheduleElement.Name))
{
throw new ArgumentException("scheduleElement cannot have an empty Name.", "scheduleElement");
}
if (jobElement == null)
{
throw new ArgumentNullException("jobElement", "jobElement cannot be null.");
}
if (String.IsNullOrEmpty(jobElement.JobType))
{
throw new ArgumentException("jobElement cannot have an empty JobType.", "jobElement");
}
if (now.Kind != DateTimeKind.Utc)
{
throw new ArgumentException("now must be in UTC.", "now");
}
return new JobRecord()
{
Name = scheduleElement.Name,
JobType = jobElement.JobType,
QueueDate = now,
ScheduleName = scheduleElement.Name,
StartDate = now,
Status = JobStatus.Started
};
}
/// <summary>
/// Gets a value indicating whether the schedule identified by the given element is ready for execution
/// given the provided heartbeat window and current date.
/// </summary>
/// <param name="element">The element to check.</param>
/// <param name="heartbeat">The heartbeat window, in milliseconds.</param>
/// <param name="now">The current date, in UTC.</param>
/// <returns>True if the schedule should be executed now, false otherwise.</returns>
public static bool ShouldExecute(JobScheduleElement element, long heartbeat, DateTime now)
{
DateTime? executeOn;
return ShouldExecute(element, heartbeat, now, out executeOn);
}
public void JobRunnerExecuteScheduledJobs()
{
JobScheduleElement sched1 = new JobScheduleElement()
{
Name = "___TEST_SCHED_1___" + Guid.NewGuid().ToString(),
RepeatHours = 24,
StartOn = DateTime.UtcNow.AddYears(-1).AddMilliseconds(Heartbeat)
};
JobScheduleElement sched2 = new JobScheduleElement()
{
Name = "___TEST_SCHED_2___" + Guid.NewGuid().ToString(),
RepeatHours = .5,
StartOn = DateTime.UtcNow.AddDays(-1).AddMilliseconds(Heartbeat)
};
JobScheduleElement sched3 = new JobScheduleElement()
{
Name = "___TEST_SCHED_3___" + Guid.NewGuid().ToString(),
RepeatHours = .5,
StartOn = DateTime.UtcNow.AddDays(1).AddMilliseconds(Heartbeat)
};
JobScheduledJobElement job1 = new JobScheduledJobElement()
{
JobType = JobRecord.JobTypeString(typeof(TestIdJob))
};
JobScheduledJobElement job2 = new JobScheduledJobElement()
{
JobType = JobRecord.JobTypeString(typeof(TestScheduledJob))
};
sched1.ScheduledJobs.Add(job1);
sched1.ScheduledJobs.Add(job2);
sched2.ScheduledJobs.Add(job2);
sched3.ScheduledJobs.Add(job1);
jobRunner.SetSchedules(new JobScheduleElement[] { sched1, sched2, sched3 });
Thread.Sleep(Heartbeat * 2);
Assert.AreEqual(2, jobStore.GetJobCount(null, null, sched1.Name));
Assert.AreEqual(1, jobStore.GetJobCount(null, null, sched2.Name));
Assert.AreEqual(0, jobStore.GetJobCount(null, null, sched3.Name));
}