/// <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);
}
/// <inheritdoc/>
public void ProcessResponse(FhirTransactionContext context)
{
// If the Patient does not exist, we will use conditional create to create the resource
// to avoid duplicated resource being created. However, if the resource with the identifier
// was created externally between the retrieve and create, conditional create will return 200
// and might not contain the changes so we will need to try again.
if (context.Request.Patient?.RequestMode == FhirTransactionRequestMode.Create)
{
FhirTransactionResponseEntry patient = context.Response.Patient;
HttpStatusCode statusCode = patient.Response.Annotation <HttpStatusCode>();
if (statusCode == HttpStatusCode.OK)
{
throw new ResourceConflictException();
}
}
}
/// <inheritdoc/>
public void ProcessResponse(FhirTransactionContext context)
{
EnsureArg.IsNotNull(context, nameof(context));
// If the ImagingStudy does not exist, we will use conditional create to create the resource
// to avoid duplicated resource being created. However, if the resource with the identifier
// was created externally between the retrieve and create, conditional create will return 200
// and might not contain the changes so we will need to try again.
if (context.Request.ImagingStudy?.RequestMode == FhirTransactionRequestMode.Create)
{
FhirTransactionResponseEntry imagingStudy = context.Response.ImagingStudy;
HttpStatusCode statusCode = imagingStudy.Response.Annotation <HttpStatusCode>();
if (statusCode == HttpStatusCode.OK)
{
throw new ResourceConflictException();
}
}
}
/// <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 Accessor, int Count)>(_requestResponsePropertyAccessors.Count);
foreach (FhirTransactionRequestResponsePropertyAccessor propertyAccessor in _requestResponsePropertyAccessors)
{
List <FhirTransactionRequestEntry> requestEntries = propertyAccessor.RequestEntryGetter(context.Request)?.ToList();
if (requestEntries == null || requestEntries.Count == 0)
{
continue;
}
int useCount = 0;
foreach (FhirTransactionRequestEntry requestEntry in requestEntries)
{
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.
bundle.Entry.Add(CreateRequestBundleEntryComponent(requestEntry));
useCount++;
}
usedPropertyAccessors.Add((propertyAccessor, useCount));
}
if (bundle.Entry.Count == 0)
{
// Nothing to update.
return;
}
// Execute the transaction.
Bundle responseBundle = await _fhirTransactionExecutor.ExecuteTransactionAsync(bundle, cancellationToken);
// Process the response.
int processedResponseItems = 0;
foreach ((FhirTransactionRequestResponsePropertyAccessor accessor, int count) in
usedPropertyAccessors.Where(x => x.Count > 0))
{
var responseEntries = new List <FhirTransactionResponseEntry>();
for (int j = 0; j < count; j++)
{
FhirTransactionResponseEntry responseEntry = CreateResponseEntry(responseBundle.Entry[processedResponseItems + j]);
responseEntries.Add(responseEntry);
}
processedResponseItems += count;
accessor.ResponseEntrySetter(context.Response, responseEntries);
}
// Execute any additional checks of the response.
foreach (IFhirTransactionPipelineStep pipeline in _fhirTransactionPipelines)
{
pipeline.ProcessResponse(context);
}