private async SystemTasks.Task <FhirResponse> Request(CommandRequest request)
{
var internalTraceId = Guid.NewGuid();
var fhirResponse = new FhirResponse();
var handler = _httpRequestHelper.GetClientHandler(request);
using (var client = new HttpClient(handler))
{
var httpRequest = _httpRequestHelper.GetRequestMessage(request);
//LogRequest(httpRequest, request.Resource, internalTraceId);
using (HttpResponseMessage res = await client.SendAsync(httpRequest, HttpCompletionOption.ResponseHeadersRead))
using (HttpContent content = res.Content)
{
//res.EnsureSuccessStatusCode(); //will throw a HttpRequestException to catch in future
var mediaType = content.Headers.ContentType?.MediaType?.ToLowerInvariant();
if (res.Headers?.Location != null)
{
fhirResponse.ResponseLocation = res.Headers.Location;
}
//TODO: upgrade to core 2.2 and use IHttpClientFactory
// for delegate handling and retries policy
if (!string.IsNullOrEmpty(mediaType) && mediaType.Contains("fhir"))
{
fhirResponse = await ParseResource(content, request, fhirResponse);
}
else
{
fhirResponse = await ParseBinary(content, request, fhirResponse);
}
//get content from fhirResponse
//string responseMessage = null;
//LogResponse(res.Headers, (int)res.StatusCode, responseMessage, internalTraceId);
if (!res.IsSuccessStatusCode)
{
var diagnostics = $"{res.StatusCode} encountered for the URL {httpRequest.RequestUri.AbsoluteUri}";
var errorResource =
(fhirResponse.Resource.ResourceType != ResourceType.OperationOutcome) ?
OperationOutcomeFactory.CreateGenericError(diagnostics) :
fhirResponse.GetResource <OperationOutcome>();
throw new HttpFhirException("Request resulted in an error.", errorResource, res.StatusCode);
}
}
}
return(await SystemTasks.Task.Run(() => fhirResponse));
}
private async SystemTasks.Task <FhirResponse> Request(CommandRequest request)
{
var fhirResponse = new FhirResponse();
var handler = GetHandler(request);
using (var client = new HttpClient(handler))
{
var httpRequest = GetMessage(request);
using (HttpResponseMessage res = await client.SendAsync(httpRequest))
using (HttpContent content = res.Content)
{
//res.EnsureSuccessStatusCode(); //will throw a HttpRequestException to catch in future
var data = content.ReadAsStreamAsync().Result;
if (data == null)
{
throw new HttpRequestException($"Request resulted in nothing for: {request.FullUrl}.");
}
if (res.Headers?.Location != null)
{
fhirResponse.ResponseLocation = res.Headers.Location;
}
using (var reader = new StreamReader(data, Encoding.UTF8))
{
try
{
var body = reader.ReadToEnd();
if (!string.IsNullOrEmpty(body))
{
var jsonParser = new FhirJsonParser();
fhirResponse.Resource = jsonParser.Parse <Resource>(body);
}
if (!res.IsSuccessStatusCode)
{
throw new HttpRequestException(new FhirJsonSerializer().SerializeToString(fhirResponse.GetResource <OperationOutcome>()));
}
}
catch (Exception ex)
{
throw new HttpRequestException(ex.Message, ex.InnerException);
}
}
}
}
return(await SystemTasks.Task.Run(() => fhirResponse));
}