/// <summary>
/// get as an asynchronous operation.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="uri">The URI.</param>
/// <param name="accessToken">The access token.</param>
/// <returns>Task<T>.</returns>
public async Task <T> GetAsync <T>(Uri uri, string accessToken)
where T : class, ICrestResource <T>
{
string responseContent = null;
if (CacheLevel == CacheLevel.Default || CacheLevel == CacheLevel.CacheOnly)
{
responseContent = await Cache.LoadAsync(uri).ConfigureAwait(false);
}
var cached = responseContent != null;
T result;
if (cached)
{
result = Serializer.Deserialize <T>(responseContent);
result.IsFromCache = true;
return(result);
}
if (CacheLevel == CacheLevel.CacheOnly)
{
return(default(T));
}
// set up request
var request = HttpRequestHelper.CreateRequest(uri);
request.Accept = ContentTypes.Get <T>(ThrowOnMissingContentType) + ";";
request.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Default);
request.Method = WebRequestMethods.Http.Get;
_trace.TraceEvent(TraceEventType.Error, 0, "Initiating Request: " + uri);
var response = await requestAsync(request, accessToken).ConfigureAwait(false);
// handle response
var header = response.Headers;
responseContent = await HttpRequestHelper.GetResponseContentAsync(response).ConfigureAwait(false);
if (CacheLevel == CacheLevel.Default || CacheLevel == CacheLevel.Refresh)
{
await Cache.StoreAsync(uri, getCacheExpirationTime(header), responseContent).ConfigureAwait(false);
}
result = Serializer.Deserialize <T>(responseContent);
result.ResponseHeaders = header;
result.Uri = uri;
return(result);
}
/// <summary>
/// Performs a request, and returns the response content.
/// </summary>
/// <typeparam name="T">Response type</typeparam>
/// <param name="uri">URI to request</param>
/// <param name="accessToken">CREST acces token</param>
/// <returns>T.</returns>
/// <exception cref="DeprecatedResourceException">The CREST resource is deprecated.</exception>
/// <exception cref="EveCrestException">
/// Undefined error
/// or
/// or
/// </exception>
public async Task <T> RequestAsync <T>(Uri uri, string accessToken) where T : class, ICrestResource <T>
{
string data = null;
if (CacheLevel == CacheLevel.Default || CacheLevel == CacheLevel.CacheOnly)
{
data = await Cache.LoadAsync(uri).ConfigureAwait(false);
}
bool cached = data != null;
if (cached)
{
return(Serializer.Deserialize <T>(data));
}
if (CacheLevel == CacheLevel.CacheOnly)
{
return(default(T));
}
// set up request
CrestMode mode = (accessToken == null) ? CrestMode.Public : CrestMode.Authenticated;
HttpWebRequest request = HttpRequestHelper.CreateRequest(uri);
request.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
request.Accept = ContentTypes.Get <T>(ThrowOnMissingContentType) + ";";
request.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Default);
if (!String.IsNullOrEmpty(Charset))
{
request.Accept = request.Accept + " " + Charset;
}
if (!String.IsNullOrEmpty(XRequestedWith))
{
request.Headers.Add("X-Requested-With", XRequestedWith);
}
if (!String.IsNullOrEmpty(UserAgent))
{
request.UserAgent = UserAgent;
}
if (mode == CrestMode.Authenticated)
{
request.Headers.Add(HttpRequestHeader.Authorization, TokenType + " " + accessToken);
_authedPool.WaitOne();
}
else
{
_publicPool.WaitOne();
}
_trace.TraceEvent(TraceEventType.Error, 0, "Initiating Request: " + uri);
WebHeaderCollection header;
try {
HttpWebResponse response = await HttpRequestHelper.GetResponseAsync(request).ConfigureAwait(false);
header = response.Headers;
string deprecated = response.GetResponseHeader("X-Deprecated");
if (!String.IsNullOrEmpty(deprecated))
{
_trace.TraceEvent(TraceEventType.Warning, 0,
"This CREST resource is deprecated. Please update to the newest EveLib version or notify the developers.");
if (ThrowOnDeprecated)
{
throw new DeprecatedResourceException("The CREST resource is deprecated.", response);
}
}
data = await HttpRequestHelper.GetResponseContentAsync(response).ConfigureAwait(false);
// release semaphores
if (mode == CrestMode.Authenticated)
{
_authedPool.Release();
}
else
{
_publicPool.Release();
}
}
catch (WebException e) {
// release semaphores
if (mode == CrestMode.Authenticated)
{
_authedPool.Release();
}
else
{
_publicPool.Release();
}
_trace.TraceEvent(TraceEventType.Error, 0, "CREST Request Failed.");
var response = (HttpWebResponse)e.Response;
Stream responseStream = response.GetResponseStream();
if (responseStream == null)
{
throw new EveCrestException("Undefined error", e);
}
using (var reader = new StreamReader(responseStream)) {
data = reader.ReadToEnd();
if (response.StatusCode == HttpStatusCode.InternalServerError ||
response.StatusCode == HttpStatusCode.BadGateway)
{
throw new EveCrestException(data, e);
}
var error = Serializer.Deserialize <CrestError>(data);
_trace.TraceEvent(TraceEventType.Verbose, 0, "Message: {0}, Key: {1}",
"Exception Type: {2}, Ref ID: {3}", error.Message, error.Key, error.ExceptionType,
error.RefId);
throw new EveCrestException(error.Message, e, error.Key, error.ExceptionType, error.RefId);
}
}
if (CacheLevel == CacheLevel.Default || CacheLevel == CacheLevel.Refresh)
{
await Cache.StoreAsync(uri, getCacheExpirationTime(header), data).ConfigureAwait(false);
}
var result = Serializer.Deserialize <T>(data);
result.ResponseHeaders = header;
return(result);
}
