public async Task <AccessToken> GetTokenAsync(CancellationToken cancellationToken)
{
if (_accessToken != null && !_accessToken.IsExpired)
{
return(_accessToken);
}
await _semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
if (_accessToken != null && !_accessToken.IsExpired)
{
return(_accessToken);
}
_accessToken = await _oAuthTokenService.GetTokenAsync(cancellationToken)
.ConfigureAwait(false);
return(_accessToken);
}
finally
{
_semaphore.Release();
}
}
// GET: Default
public async Task <ActionResult> Index(CancellationToken cancellationToken)
{
var accessToken = await _oAuthTokenService.GetTokenAsync(cancellationToken).ConfigureAwait(false);
ViewBag.Token = accessToken;
var dateTime = await GetDateTimeFromWebService(accessToken, cancellationToken).ConfigureAwait(false);
ViewBag.Result = dateTime;
return(View());
}
public Task <AccessToken> GetTokenAsync(CancellationToken cancellationToken)
{
return(_retryPolicy.ExecuteAsync(
ct1 => _circuitBreakerPolicy.ExecuteAsync(
ct2 => _oAuthTokenService.GetTokenAsync(ct2), ct1), cancellationToken));
}
