/// <inheritdoc/>
public async Task ProcessAsync(ChangeFeedEntry changeFeedEntry, CancellationToken cancellationToken)
{
EnsureArg.IsNotNull(changeFeedEntry, nameof(changeFeedEntry));
// Create a context used throughout this process.
var context = new FhirTransactionContext(changeFeedEntry);
// Prepare all required objects for the transaction.
foreach (IFhirTransactionPipelineStep pipeline in _fhirTransactionPipelines)
{
await pipeline.PrepareRequestAsync(context, cancellationToken);
}
// Check to see if any resource needs to be created/updated.
var bundle = new Bundle()
{
Type = Bundle.BundleType.Transaction,
};
var usedPropertyAccessors = new List <FhirTransactionRequestResponsePropertyAccessor>(_requestResponsePropertyAccessors.Count);
foreach (FhirTransactionRequestResponsePropertyAccessor propertyAccessor in _requestResponsePropertyAccessors)
{
FhirTransactionRequestEntry requestEntry = propertyAccessor.RequestEntryGetter(context.Request);
if (requestEntry == null || requestEntry.RequestMode == FhirTransactionRequestMode.None)
{
// No associated request, skip it.
continue;
}
// There is a associated request, add to the list so it gets processed.
usedPropertyAccessors.Add(propertyAccessor);
bundle.Entry.Add(CreateRequestBundleEntryComponent(requestEntry));
}
if (!bundle.Entry.Any())
{
// Nothing to update.
return;
}
// Execute the transaction.
Bundle responseBundle = await _fhirTransactionExecutor.ExecuteTransactionAsync(bundle, cancellationToken);
// Process the response.
for (int i = 0; i < usedPropertyAccessors.Count; i++)
{
FhirTransactionResponseEntry responseEntry = CreateResponseEntry(responseBundle.Entry[i]);
usedPropertyAccessors[i].ResponseEntrySetter(context.Response, responseEntry);
}
// Execute any additional checks of the response.
foreach (IFhirTransactionPipelineStep pipeline in _fhirTransactionPipelines)
{
pipeline.ProcessResponse(context);
}
static Bundle.EntryComponent CreateRequestBundleEntryComponent(FhirTransactionRequestEntry requestEntry)
{
return(new Bundle.EntryComponent()
{
FullUrl = requestEntry.ResourceId.ToString(),
Request = requestEntry.Request,
Resource = requestEntry.Resource,
});
}