public override Task ProcessChangesAsync(
ChangeFeedObserverContextCore context,
Stream stream,
CancellationToken cancellationToken)
{
return(this.onChanges(context, stream, cancellationToken));
}
public override async Task ProcessChangesAsync(
ChangeFeedObserverContextCore context,
Stream stream,
CancellationToken cancellationToken)
{
await this.observer.ProcessChangesAsync(context, stream, cancellationToken).ConfigureAwait(false);
await context.CheckpointAsync();
}
public override async Task ProcessChangesAsync(ChangeFeedObserverContextCore context, Stream stream, CancellationToken cancellationToken)
{
try
{
await this.changeFeedObserver.ProcessChangesAsync(context, stream, cancellationToken).ConfigureAwait(false);
}
catch (Exception userException)
{
throw new ChangeFeedProcessorUserException(userException, context);
}
}
private Task ChangesStreamHandlerAsync(
ChangeFeedObserverContextCore context,
Stream stream,
CancellationToken cancellationToken)
{
if (this.onChanges != null)
{
return(this.onChanges(context, stream, cancellationToken));
}
return(this.onChangesWithManualCheckpoint(context, stream, context.TryCheckpointAsync, cancellationToken));
}
public override async Task ProcessChangesAsync(ChangeFeedObserverContextCore context, Stream stream, CancellationToken cancellationToken)
{
try
{
await this.changeFeedObserver.ProcessChangesAsync(context, stream, cancellationToken).ConfigureAwait(false);
}
catch (Exception userException)
{
Extensions.TraceException(userException);
DefaultTrace.TraceWarning("Exception happened on Observer.ProcessChangesAsync");
throw new ObserverException(userException);
}
}
public override async Task ProcessChangesAsync(
ChangeFeedObserverContextCore context,
Stream stream,
CancellationToken cancellationToken)
{
await this.observer.ProcessChangesAsync(context, stream, cancellationToken).ConfigureAwait(false);
(bool isSuccess, Exception exception) = await context.TryCheckpointAsync();
if (!isSuccess)
{
throw exception;
}
}
public ChangeFeedProcessorContextCore(ChangeFeedObserverContextCore changeFeedObserverContextCore)
{
this.changeFeedObserverContextCore = changeFeedObserverContextCore;
}
/// <summary>
/// This is called when document changes are available on change feed.
/// </summary>
/// <param name="context">The context specifying partition for this change event, etc.</param>
/// <param name="stream">The document streams that contain the change feed events.</param>
/// <param name="cancellationToken">Token to signal that the partition processing is going to finish.</param>
/// <returns>A Task to allow asynchronous execution.</returns>
public abstract Task ProcessChangesAsync(
ChangeFeedObserverContextCore context,
Stream stream,
CancellationToken cancellationToken);
