private static void ValidateArgs(AccessTokenRequestArgs args)
{
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
}
public async Task <string> GetAsync(AccessTokenRequestArgs args, CancellationToken token = default)
{
ValidateArgs(args);
try
{
var accessToken = await _storage.GetAsync(args.RequestUri, token);
if (accessToken != null)
{
return(accessToken);
}
var accessTokenResponse = await _client.SendRequestAsync(args, token);
EnsureValidAccessToken(accessTokenResponse);
await _storage.AddAsync(args.RequestUri, accessTokenResponse, token);
return(accessTokenResponse.AccessToken);
}
catch (Exception e)
{
throw new AuthenticationException("Could not retrieve an access token.", e);
}
}
public void GetAsync_ArgsEqNull_Throws()
{
AccessTokenRequestArgs args = null;
Func <Task> act = () => _sut.GetAsync(args);
act.Should().Throw <ArgumentNullException>();
}
public async Task <AccessTokenResponse> SendRequestAsync(AccessTokenRequestArgs args, CancellationToken token)
{
var requestBody = CreateBody(args.ClientId, args.ClientAssertion);
var response = await _httpClient.PostAsync(RemoveSlashSuffix(args.RequestUri), requestBody, token);
response.EnsureSuccessStatusCode();
return(await AccessTokenResponse.FromHttpContentAsync(response.Content));
}
