/// <summary>
/// Executes the operation.
/// </summary>
/// <param name="batchReader">The batch reader.</param>
/// <param name="batchId">The batch id.</param>
/// <param name="originalRequest">The original request containing all the batch requests.</param>
/// <param name="handler">The handler for processing a message.</param>
/// <returns>The response for the operation.</returns>
public virtual async Task <ODataBatchResponseItem> ExecuteOperationAsync(ODataBatchReader batchReader, Guid batchId, HttpRequest originalRequest, RequestDelegate handler)
{
if (batchReader == null)
{
throw new ArgumentNullException(nameof(batchReader));
}
if (originalRequest == null)
{
throw new ArgumentNullException(nameof(originalRequest));
}
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
CancellationToken cancellationToken = originalRequest.HttpContext.RequestAborted;
cancellationToken.ThrowIfCancellationRequested();
HttpContext operationContext = await batchReader.ReadOperationRequestAsync(originalRequest.HttpContext, batchId, cancellationToken).ConfigureAwait(false);
operationContext.Request.ClearRouteServices();
OperationRequestItem operation = new OperationRequestItem(operationContext);
ODataBatchResponseItem responseItem = await operation.SendRequestAsync(handler).ConfigureAwait(false);
return(responseItem);
}
/// <summary>
/// Converts the incoming OData batch request into a collection of request messages.
/// </summary>
/// <param name="context">The context containing the batch request messages.</param>
/// <returns>A collection of <see cref="ODataBatchRequestItem"/>.</returns>
public virtual async Task <IList <ODataBatchRequestItem> > ParseBatchRequestsAsync(HttpContext context)
{
if (context == null)
{
throw Error.ArgumentNull(nameof(context));
}
HttpRequest request = context.Request;
IServiceProvider requestContainer = request.CreateRouteServices(PrefixName);
requestContainer.GetRequiredService <ODataMessageReaderSettings>().BaseUri = GetBaseUri(request);
using (ODataMessageReader reader = request.GetODataMessageReader(requestContainer))
{
CancellationToken cancellationToken = context.RequestAborted;
List <ODataBatchRequestItem> requests = new List <ODataBatchRequestItem>();
ODataBatchReader batchReader = await reader.CreateODataBatchReaderAsync().ConfigureAwait(false);
Guid batchId = Guid.NewGuid();
Dictionary <string, string> contentToLocationMapping = new Dictionary <string, string>();
while (await batchReader.ReadAsync().ConfigureAwait(false))
{
if (batchReader.State == ODataBatchReaderState.ChangesetStart)
{
IList <HttpContext> changeSetContexts = await batchReader.ReadChangeSetRequestAsync(context, batchId, cancellationToken).ConfigureAwait(false);
foreach (HttpContext changeSetContext in changeSetContexts)
{
changeSetContext.Request.ClearRouteServices();
}
ChangeSetRequestItem requestItem = new ChangeSetRequestItem(changeSetContexts);
requestItem.ContentIdToLocationMapping = contentToLocationMapping;
requests.Add(requestItem);
}
else if (batchReader.State == ODataBatchReaderState.Operation)
{
HttpContext operationContext = await batchReader.ReadOperationRequestAsync(context, batchId, cancellationToken).ConfigureAwait(false);
operationContext.Request.ClearRouteServices();
OperationRequestItem requestItem = new OperationRequestItem(operationContext);
requestItem.ContentIdToLocationMapping = contentToLocationMapping;
requests.Add(requestItem);
}
}
return(requests);
}
}
