public override async Task ProcessChangesAsync(ChangeFeedObserverContext context, IReadOnlyList <T> docs, CancellationToken cancellationToken)
{
try
{
await this.changeFeedObserver.ProcessChangesAsync(context, docs, cancellationToken).ConfigureAwait(false);
}
catch (Exception userException)
{
Logger.WarnException("Exception happened on Observer.ProcessChangesAsync", userException);
throw new ObserverException(userException);
}
}
public override async Task OpenAsync(ChangeFeedObserverContext context)
{
try
{
await this.changeFeedObserver.OpenAsync(context).ConfigureAwait(false);
}
catch (Exception userException)
{
Logger.WarnException("Exception happened on Observer.OpenAsync", userException);
throw new ObserverException(userException);
}
}
public override async Task ProcessChangesAsync(ChangeFeedObserverContext context, IReadOnlyCollection <T> docs, CancellationToken cancellationToken)
{
try
{
await this.changeFeedObserver.ProcessChangesAsync(context, docs, cancellationToken).ConfigureAwait(false);
}
catch (Exception userException)
{
Extensions.TraceException(userException);
DefaultTrace.TraceWarning("Exception happened on Observer.ProcessChangesAsync");
throw new ObserverException(userException);
}
}
public override async Task OpenAsync(ChangeFeedObserverContext context)
{
try
{
await this.changeFeedObserver.OpenAsync(context).ConfigureAwait(false);
}
catch (Exception userException)
{
Extensions.TraceException(userException);
DefaultTrace.TraceWarning("Exception happened on Observer.OpenAsync");
throw new ObserverException(userException);
}
}
public override async Task CloseAsync(ChangeFeedObserverContext context, ChangeFeedObserverCloseReason reason)
{
try
{
await this.changeFeedObserver.CloseAsync(context, reason).ConfigureAwait(false);
}
catch (Exception userException)
{
DefaultTrace.TraceException(userException);
DefaultTrace.TraceWarning("Exception happened on Observer.CloseAsync");
throw new ObserverException(userException);
}
}
public override async Task ProcessChangesAsync(ChangeFeedObserverContext context, IReadOnlyCollection <T> docs, CancellationToken cancellationToken)
{
await this.observer.ProcessChangesAsync(context, docs, cancellationToken).ConfigureAwait(false);
this.processedDocCount += docs.Count;
if (this.IsCheckpointNeeded())
{
await context.CheckpointAsync().ConfigureAwait(false);
this.processedDocCount = 0;
this.lastCheckpointTime = DateTime.UtcNow;
}
}
public override Task ProcessChangesAsync(ChangeFeedObserverContext context, IReadOnlyList <T> docs, CancellationToken cancellationToken)
{
return(this.onChanges(docs, cancellationToken));
}
public override Task OpenAsync(ChangeFeedObserverContext context)
{
return(Task.CompletedTask);
}
public override Task CloseAsync(ChangeFeedObserverContext context, ChangeFeedObserverCloseReason reason)
{
return(Task.CompletedTask);
}
public override Task CloseAsync(ChangeFeedObserverContext context, ChangeFeedObserverCloseReason reason)
{
return(this.observer.CloseAsync(context, reason));
}
public override Task OpenAsync(ChangeFeedObserverContext context)
{
return(this.observer.OpenAsync(context));
}
/// <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="docs">The documents changed.</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(ChangeFeedObserverContext context, IReadOnlyCollection <T> docs, CancellationToken cancellationToken);
/// <summary> /// This is called when change feed observer is closed. /// </summary> /// <param name="context">The context specifying partition for this observer, etc.</param> /// <param name="reason">Specifies the reason the observer is closed.</param> /// <returns>A Task to allow asynchronous execution.</returns> public abstract Task CloseAsync(ChangeFeedObserverContext context, ChangeFeedObserverCloseReason reason);
/// <summary> /// This is called when change feed observer is opened. /// </summary> /// <param name="context">The context specifying partition for this observer, etc.</param> /// <returns>A Task to allow asynchronous execution.</returns> public abstract Task OpenAsync(ChangeFeedObserverContext context);
