public override async Task Bind()
{
// Register handlers for processing events and handling errors
EventProcessorClient.ProcessEventAsync += async(args) =>
{
Console.WriteLine("ProcessEventAsync");
if (args.CancellationToken.IsCancellationRequested)
{
return;
}
try
{
await _container.CreateItemAsync(
await Run(
_context,
JsonSerializer.Deserialize <TInput>(Encoding.UTF8.GetString(args.Data.Body.ToArray())), args.CancellationToken));
await args.UpdateCheckpointAsync(args.CancellationToken);
_context.PostHealth(FunHealth.Normal());
}
catch (OutOfMemoryException ex)
{
// TODO: Fix Logging
//_context.LogError(ex);
_context.ScaleUp(ex);
_context.PostHealth(FunHealth.Degraded(ex));
}
catch (Exception ex)
{
// TODO: retry, etc
Console.WriteLine(ex.Message);
_context.PostHealth(FunHealth.Failure(ex));
}
};
EventProcessorClient.ProcessErrorAsync += (args) =>
{
Console.WriteLine($"ProcessErrorAsync: {args.Exception.Message}");
//_context.Logger.LogError(eventArgs.Exception);
// Circuit breaker
//if (attempts > 3) Health.Error(ex);
//else Health.Warning(ex);
_context.PostHealth(FunHealth.Failure(args.Exception));
return(Task.CompletedTask);
};
// Start the processor
await EventProcessorClient.StartProcessingAsync();
return;
}
public override Task <MyDocument> Run(FunContext context, MyEvent input, CancellationToken cancellationToken)
{
try
{
Console.WriteLine("Run");
return(Task.FromResult(
new MyDocument {
Id = Guid.NewGuid().ToString("N"),
MyProperty = input.MyProperty
}));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
//context.Logger.LogError(ex);
context.PostHealth(FunHealth.Failure(ex));
throw;
}
}
