/// <summary>
/// Resume an active job or trigger new job from job store.
/// and execute the job.
/// </summary>
/// <param name="cancellationToken">cancellation token.</param>
/// <returns>Completed task.</returns>
public async Task RunAsync(CancellationToken cancellationToken = default)
{
_logger.LogInformation("Job starts running.");
// Acquire an active job from the job store.
var job = await _jobStore.AcquireActiveJobAsync(cancellationToken) ?? await CreateNewJobAsync(cancellationToken);
if (job == null)
{
_logger.LogWarning("Job has been scheduled to end.");
// release job lock
Dispose();
}
else
{
_logger.LogInformation($"The running job id is {job.Id}");
// Update the running job to job store.
// For new/resume job, add the created job to job store; For active job, update the last heart beat.
await _jobStore.UpdateJobAsync(job, cancellationToken);
try
{
job.Status = JobStatus.Running;
await _jobExecutor.ExecuteAsync(job, cancellationToken);
job.Status = JobStatus.Succeeded;
await _jobStore.CompleteJobAsync(job, cancellationToken);
}
catch (Exception exception)
{
job.Status = JobStatus.Failed;
job.FailedReason = exception.ToString();
await _jobStore.CompleteJobAsync(job, cancellationToken);
_logger.LogError(exception, "Process job '{jobId}' failed.", job.Id);
throw;
}
}
}