private static async Task <OutcomeResponse <T> > GetOutcome <T>(string serviceUrl, string consumerKey,
string consumerSecret, string contentType) where T : class
{
try
{
var request = new HttpRequestMessage(HttpMethod.Get, serviceUrl);
request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue(contentType));
SignRequest(request, null, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse <T>();
HttpResponseMessage response = null;
try
{
#if DEBUG
// Capture the request in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpRequest = await request.ToFormattedRequestStringAsync();
#endif
response = await request.GetResponseAsync(allowAutoRedirect : true);
outcomeResponse.StatusCode = response.StatusCode;
if (response.StatusCode == HttpStatusCode.OK)
{
outcomeResponse.Outcome = response.DeserializeObject <T>();
}
}
catch (HttpRequestException)
{
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
finally
{
#if DEBUG
// Capture the response in human readable form for debugging
// and inspection while learning
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(
outcomeResponse.Outcome == null
? null
: outcomeResponse.Outcome.ToJsonString());
}
#endif
}
return(outcomeResponse);
}
catch (Exception)
{
return(new OutcomeResponse <T> {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse <T> > GetOutcome <T>(string serviceUrl, string consumerKey,
string consumerSecret, string contentType) where T : class
{
try
{
var request = (HttpWebRequest)WebRequest.Create(serviceUrl);
request.Method = "GET";
request.Accept = contentType;
request.AllowAutoRedirect = true;
SignRequest(request, null, consumerKey, consumerSecret);
return(await Task.Factory.StartNew(() =>
{
var outcomeResponse = new OutcomeResponse <T>();
HttpWebResponse response = null;
try
{
response = (HttpWebResponse)request.GetResponse();
outcomeResponse.StatusCode = response.StatusCode;
if (response.StatusCode == HttpStatusCode.OK)
{
outcomeResponse.Outcome = response.DeserializeObject <T>();
}
}
catch (WebException ex)
{
response = (HttpWebResponse)ex.Response;
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
finally
{
#if DEBUG
outcomeResponse.HttpRequest = request.ToFormattedRequestString();
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(
outcomeResponse.Outcome == null
? null
: outcomeResponse.Outcome.ToJsonString());
}
#endif
}
return outcomeResponse;
}));
}
catch (Exception)
{
return(new OutcomeResponse <T> {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse <T> > PostOutcomeAsync <T>(T outcome, string serviceUrl,
string consumerKey, string consumerSecret, string contentType) where T : class
{
try
{
var request = new HttpRequestMessage(HttpMethod.Post, serviceUrl);
var body = Encoding.UTF8.GetBytes(outcome.ToJsonLdString());
request.Content = new ByteArrayContent(body);
request.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
SignRequest(request, body, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse <T>();
try
{
#if DEBUG
// Capture the request in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpRequest = await request.ToFormattedRequestStringAsync();
#endif
using (var response = await request.GetResponseAsync())
{
outcomeResponse.StatusCode = response.StatusCode;
if (response.StatusCode == HttpStatusCode.Created)
{
outcomeResponse.Outcome = response.DeserializeObject <T>();
}
#if DEBUG
// Capture the response in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpResponse = response.ToFormattedResponseString(
outcomeResponse.Outcome?.ToJsonString());
#endif
}
}
catch (HttpRequestException ex)
{
outcomeResponse.Exception = ex;
outcomeResponse.StatusCode = HttpStatusCode.BadRequest;
}
catch (Exception ex)
{
outcomeResponse.Exception = ex;
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
return(outcomeResponse);
}
catch (Exception ex)
{
return(new OutcomeResponse <T>
{
Exception = ex,
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse> DeleteOutcomeAsync(string serviceUrl, string consumerKey,
string consumerSecret, string contentType = null)
{
try
{
var request = new HttpRequestMessage(HttpMethod.Delete, serviceUrl);
// Content-Type header is not required. If not specified, all representations of
// the resource will be deleted.
// See https://www.imsglobal.org/lti/model/uml/purl.imsglobal.org/vocab/lis/v2/outcomes/LineItem/service.html#DELETE
if (!string.IsNullOrWhiteSpace(contentType))
{
request.Content = new StringContent(string.Empty);
request.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
}
SignRequest(request, null, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse();
try
{
#if DEBUG
// Capture the request in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpRequest = await request.ToFormattedRequestStringAsync();
#endif
using (var response = await request.GetResponseAsync())
{
outcomeResponse.StatusCode = response.StatusCode;
#if DEBUG
// Capture the response in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpResponse = response.ToFormattedResponseString(null);
#endif
}
}
catch (HttpRequestException ex)
{
outcomeResponse.Exception = ex;
outcomeResponse.StatusCode = HttpStatusCode.BadRequest;
}
catch (Exception ex)
{
outcomeResponse.Exception = ex;
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
return(outcomeResponse);
}
catch (Exception ex)
{
return(new OutcomeResponse
{
Exception = ex,
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse <T> > PostOutcome <T>(T outcome, string serviceUrl,
string consumerKey, string consumerSecret, string contentType) where T : class
{
try
{
var request = new HttpRequestMessage(HttpMethod.Post, serviceUrl);
request.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
var body = Encoding.UTF8.GetBytes(outcome.ToJsonLdString());
request.Content = new ByteArrayContent(body);
SignRequest(request, body, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse <T>();
HttpResponseMessage response = null;
try
{
response = await request.GetResponseAsync();
outcomeResponse.StatusCode = response.StatusCode;
if (response.StatusCode == HttpStatusCode.Created)
{
outcomeResponse.Outcome = response.DeserializeObject <T>();
}
}
catch (HttpRequestException)
{
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
finally
{
#if DEBUG
outcomeResponse.HttpRequest = request.ToFormattedRequestString();
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(
outcomeResponse.Outcome == null
? null
: outcomeResponse.Outcome.ToJsonString());
}
#endif
}
return(outcomeResponse);
}
catch (Exception)
{
return(new OutcomeResponse <T>
{
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse> PutOutcome <T>(T outcome, string serviceUrl, string consumerKey,
string consumerSecret, string contentType)
{
try
{
var request = (HttpWebRequest)WebRequest.Create(serviceUrl);
request.Method = "PUT";
request.ContentType = contentType;
var body = Encoding.UTF8.GetBytes(outcome.ToJsonLdString());
using (var stream = request.GetRequestStream())
{
await stream.WriteAsync(body, 0, body.Length);
}
SignRequest(request, body, consumerKey, consumerSecret);
return(await Task.Factory.StartNew(() =>
{
var outcomeResponse = new OutcomeResponse();
HttpWebResponse response = null;
try
{
response = (HttpWebResponse)request.GetResponse();
outcomeResponse.StatusCode = response.StatusCode;
}
catch (WebException ex)
{
response = (HttpWebResponse)ex.Response;
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
finally
{
#if DEBUG
outcomeResponse.HttpRequest = request.ToFormattedRequestString();
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(null);
}
#endif
}
return outcomeResponse;
}));
}
catch (Exception)
{
return(new OutcomeResponse {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse> PutOutcome <T>(T outcome, string serviceUrl, string consumerKey,
string consumerSecret, string contentType)
{
try
{
var request = new HttpRequestMessage(HttpMethod.Put, serviceUrl);
var body = Encoding.UTF8.GetBytes(outcome.ToJsonLdString());
request.Content = new ByteArrayContent(body);
request.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
SignRequest(request, body, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse();
HttpResponseMessage response = null;
try
{
#if DEBUG
// Capture the request in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpRequest = await request.ToFormattedRequestStringAsync();
#endif
response = await request.GetResponseAsync();
outcomeResponse.StatusCode = response.StatusCode;
}
catch (HttpRequestException)
{
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
finally
{
#if DEBUG
// Capture the response in human readable form for debugging
// and inspection while learning
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(null);
}
#endif
}
return(outcomeResponse);
}
catch (Exception)
{
return(new OutcomeResponse {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse> DeleteOutcome(string serviceUrl, string consumerKey,
string consumerSecret, string contentType = null)
{
try
{
var request = (HttpWebRequest)WebRequest.Create(serviceUrl);
request.Method = "DELETE";
if (!string.IsNullOrWhiteSpace(contentType))
{
request.ContentType = contentType;
}
SignRequest(request, null, consumerKey, consumerSecret);
return(await Task.Factory.StartNew(() =>
{
var outcomeResponse = new OutcomeResponse();
HttpWebResponse response = null;
try
{
response = (HttpWebResponse)request.GetResponse();
outcomeResponse.StatusCode = response.StatusCode;
}
catch (WebException ex)
{
response = (HttpWebResponse)ex.Response;
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
#if DEBUG
finally
{
outcomeResponse.HttpRequest = request.ToFormattedRequestString();
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(null);
}
}
#endif
return outcomeResponse;
}));
}
catch (Exception)
{
return(new OutcomeResponse {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse> DeleteOutcome(string serviceUrl, string consumerKey,
string consumerSecret, string contentType = null)
{
try
{
var request = new HttpRequestMessage(HttpMethod.Delete, serviceUrl);
SignRequest(request, null, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse();
HttpResponseMessage response = null;
try
{
#if DEBUG
// Capture the request in human readable form for debugging
// and inspection while learning
outcomeResponse.HttpRequest = await request.ToFormattedRequestStringAsync();
#endif
response = await request.GetResponseAsync();
outcomeResponse.StatusCode = response.StatusCode;
}
catch (HttpRequestException)
{
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
#if DEBUG
finally
{
// Capture the response in human readable form for debugging
// and inspection while learning
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(null);
}
}
#endif
return(outcomeResponse);
}
catch (Exception)
{
return(new OutcomeResponse {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
private static async Task <OutcomeResponse> DeleteOutcome(string serviceUrl, string consumerKey,
string consumerSecret, string contentType = null)
{
try
{
var request = new HttpRequestMessage(HttpMethod.Delete, serviceUrl);
if (!string.IsNullOrWhiteSpace(contentType))
{
request.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
}
SignRequest(request, null, consumerKey, consumerSecret);
var outcomeResponse = new OutcomeResponse();
HttpResponseMessage response = null;
try
{
response = await request.GetResponseAsync();
outcomeResponse.StatusCode = response.StatusCode;
}
catch (HttpRequestException)
{
outcomeResponse.StatusCode = response.StatusCode;
}
catch (Exception)
{
outcomeResponse.StatusCode = HttpStatusCode.InternalServerError;
}
#if DEBUG
finally
{
outcomeResponse.HttpRequest = request.ToFormattedRequestString();
if (response != null)
{
outcomeResponse.HttpResponse = response.ToFormattedResponseString(null);
}
}
#endif
return(outcomeResponse);
}
catch (Exception)
{
return(new OutcomeResponse {
StatusCode = HttpStatusCode.InternalServerError
});
}
}
