public async Task Invoke(HttpContext context, IFhirDataBaseProvider dataBaseProvider)
{
if (!context.Request.Path.Value.Contains("/fhir/"))
{
await _next(context);
return;
}
using (var requestBodyStream = new MemoryStream())
{
using (var responseBodyStream = new MemoryStream())
{
var originalRequestBody = context.Request.Body;
var originalResponseBody = context.Response.Body;
var requestBodyText = "";
var responseBodyText = "";
await context.Request.Body.CopyToAsync(requestBodyStream);
requestBodyStream.Seek(0, SeekOrigin.Begin);
requestBodyText = Convert.ToBase64String(requestBodyStream.ToArray());
requestBodyStream.Seek(0, SeekOrigin.Begin);
context.Request.Body = requestBodyStream;
context.Response.Body = responseBodyStream;
await _next(context);
responseBodyStream.Seek(0, SeekOrigin.Begin);
responseBodyText = Convert.ToBase64String(responseBodyStream.ToArray());
responseBodyStream.Seek(0, SeekOrigin.Begin);
await responseBodyStream.CopyToAsync(originalResponseBody);
dataBaseProvider.WithConnection <object>("server_event.create_server_event", new NpgsqlParameter
{
NpgsqlDbType = NpgsqlDbType.Jsonb,
Value = JsonConvert.SerializeObject(
BuildActionMetadata(context, responseBodyText, requestBodyText))
});
context.Request.Body = originalRequestBody;
context.Response.Body = originalResponseBody;
}
}
}
private Resource ExecuteFunction(string name, params NpgsqlParameter[] parameters)
{
var resource = _dataBaseProvider.WithConnection(name, parameters);
OperationOutcome operationOutcome = resource as OperationOutcome;
if (operationOutcome != null)
{
throw new FhirHttpResponseException(operationOutcome);
}
return(resource);
}