private ProcessingContext(ProcessingContext other)
{
Provider = other.Provider;
Storage = other.Storage;
CancellationToken = other.CancellationToken;
}
protected virtual CancellationToken GetTokenToWaitOn(ProcessingContext context)
{
return(context.CancellationToken);
}
private async Task <bool> Step(ProcessingContext context)
{
var fetched = default(IFetchedJob);
using (var scope = _provider.CreateScope())
{
var provider = scope.ServiceProvider;
var connection = provider.GetRequiredService <IStorageConnection>();
if ((fetched = await connection.FetchNextJobAsync()) != null)
{
using (fetched)
using (var scopedContext = context.CreateScope())
{
var job = await connection.GetJobAsync(fetched.JobId);
var invocationData = Helper.FromJson <InvocationData>(job.Data);
var method = invocationData.Deserialize();
var factory = scopedContext.Provider.GetService <IJobFactory>();
var instance = default(object);
if (!method.Method.IsStatic)
{
instance = factory.Create(method.Type);
}
try
{
var sp = Stopwatch.StartNew();
await _stateChanger.ChangeStateAsync(job, new ProcessingState(), connection);
if (job.Retries > 0)
{
_logger.JobRetrying(job.Retries);
}
var result = await ExecuteJob(method, instance);
sp.Stop();
var newState = default(IState);
if (!result.Succeeded)
{
var shouldRetry = await UpdateJobForRetryAsync(instance, job, connection);
if (shouldRetry)
{
newState = new ScheduledState();
_logger.JobFailedWillRetry(result.Exception);
}
else
{
newState = new FailedState();
_logger.JobFailed(result.Exception);
}
}
else
{
newState = new SucceededState();
}
await _stateChanger.ChangeStateAsync(job, newState, connection);
fetched.RemoveFromQueue();
if (result.Succeeded)
{
_logger.JobExecuted(sp.Elapsed.TotalSeconds);
}
}
catch (JobLoadException ex)
{
_logger.JobCouldNotBeLoaded(job.Id, ex);
await _stateChanger.ChangeStateAsync(job, new FailedState(), connection);
fetched.RemoveFromQueue();
}
catch (Exception ex)
{
_logger.ExceptionOccuredWhileExecutingJob(job.Id, ex);
fetched.Requeue();
}
}
}
}
return(fetched != null);
}
public Task ProcessAsync(ProcessingContext context)
{
throw new OperationCanceledException();
}