/// <summary>
/// Add a decorator to the enumerable for additional processing
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="enumerator">The enumerator.</param>
/// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> that may be used to cancel the asynchronous iteration.</param>
protected override AsyncEnumerableTask <Row> DecorateEnumerableForExecution(
IOperation operation,
IAsyncEnumerable <Row> enumerator,
CancellationToken cancellationToken = default)
{
ThreadSafeEnumerator <Row> threadedEnumerator = new ThreadSafeEnumerator <Row>();
Task task = Task.Run(async() =>
{
try
{
IAsyncEnumerable <Row> eventRaisingEnumerator = new EventRaisingEnumerator(operation, enumerator);
await eventRaisingEnumerator
.ForEachAsync(async t => { await threadedEnumerator.AddItem(t); },
cancellationToken: cancellationToken);
}
catch (Exception e)
{
Error(e, "Failed to execute operation {0}", new Tuple <string, object>("Operation", operation));
}
finally
{
await threadedEnumerator.MarkAsFinished();
}
}, cancellationToken);
return(new AsyncEnumerableTask <Row>
{
Enumerable = threadedEnumerator,
Task = task,
});
}
/// <summary>
/// Add a decorator to the enumerable for additional processing
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="enumerator">The enumerator.</param>
protected override IEnumerable <Row> DecorateEnumerableForExecution(IOperation operation, IEnumerable <Row> enumerator)
{
ThreadSafeEnumerator <Row> threadedEnumerator = new ThreadSafeEnumerator <Row>();
ThreadPool.QueueUserWorkItem(delegate
{
try
{
foreach (Row t in new EventRaisingEnumerator(operation, enumerator))
{
threadedEnumerator.AddItem(t);
}
}
catch (Exception e)
{
Error(e, "Failed to execute operation {0}", operation);
threadedEnumerator.MarkAsFinished();
#if DEBUG
throw e;
#endif
}
finally
{
threadedEnumerator.MarkAsFinished();
}
});
return(threadedEnumerator);
}
/// <summary>
/// Add a decorator to the enumerable for additional processing
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="enumerator">The enumerator.</param>
protected override IEnumerable<Row> DecorateEnumerableForExecution(IOperation operation, IEnumerable<Row> enumerator)
{
ThreadSafeEnumerator<Row> threadedEnumerator = new ThreadSafeEnumerator<Row>();
ThreadPool.QueueUserWorkItem(delegate
{
try
{
foreach (Row t in new EventRaisingEnumerator(operation, enumerator))
{
threadedEnumerator.AddItem(t);
}
}
catch (Exception e)
{
Error(e, "Failed to execute operation {0}", operation);
threadedEnumerator.MarkAsFinished();
throw;
}
finally
{
threadedEnumerator.MarkAsFinished();
}
});
return threadedEnumerator;
}
/// <summary>
/// Add a decorator to the enumerable for additional processing
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="enumerator">The enumerator.</param>
protected override IEnumerable <Row> DecorateEnumerableForExecution(IOperation operation, IEnumerable <Row> enumerator)
{
var threadedEnumerator = new ThreadSafeEnumerator <Row>();
ThreadPool.QueueUserWorkItem(delegate {
try {
foreach (Row t in new EventRaisingEnumerator(operation, enumerator))
{
threadedEnumerator.AddItem(t);
}
} catch (Exception e) {
foreach (var inner in e.FlattenHierarchy())
{
Error(inner, "Failed to execute {0}. {1}", operation.Name, inner.Message);
Debug(inner.StackTrace);
}
threadedEnumerator.MarkAsFinished();
#if DEBUG
throw new TransformalizeException(Logger, e.Message);
#endif
} finally {
threadedEnumerator.MarkAsFinished();
}
});
return(threadedEnumerator);
}
/// <summary>
/// Add a decorator to the enumerable for additional processing
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="enumerator">The enumerator.</param>
protected override IEnumerable<Row> DecorateEnumerableForExecution(IOperation operation, IEnumerable<Row> enumerator) {
var threadedEnumerator = new ThreadSafeEnumerator<Row>();
ThreadPool.QueueUserWorkItem(delegate {
try {
foreach (Row t in new EventRaisingEnumerator(operation, enumerator)) {
threadedEnumerator.AddItem(t);
}
} catch (Exception e) {
foreach (var inner in e.FlattenHierarchy()) {
Error(inner, "Failed to execute {0}. {1}", operation.Name, inner.Message);
Debug(inner.StackTrace);
}
threadedEnumerator.MarkAsFinished();
#if DEBUG
throw new TransformalizeException(Logger, e.Message);
#endif
} finally {
threadedEnumerator.MarkAsFinished();
}
});
return threadedEnumerator;
}