private async ValueTask <ExtendedAccessToken> GetTokenImplAsync(TokenRequestContext requestContext, CancellationToken cancellationToken)
{
using CredentialDiagnosticScope scope = _pipeline.StartGetTokenScope("ManagedIdentityCredential.GetToken", requestContext);
try
{
ExtendedAccessToken result = await _client.AuthenticateAsync(requestContext.Scopes, cancellationToken).ConfigureAwait(false);
if (result.Exception != null)
{
scope.Failed(result.Exception);
}
else
{
scope.Succeeded(result.AccessToken);
}
return(result);
}
catch (OperationCanceledException e)
{
scope.Failed(e);
throw;
}
catch (Exception e)
{
return(new ExtendedAccessToken(scope.Failed(e)));
}
}
private async Task <AccessToken> GetTokenAsync(bool isAsync, TokenRequestContext requestContext, CancellationToken cancellationToken)
{
using CredentialDiagnosticScope scope = _pipeline.StartGetTokenScope("Azure.Identity.DefaultAcureCredential.GetToken", requestContext);
List <Exception> exceptions = new List <Exception>();
int i;
for (i = 0; i < _sources.Length && _sources[i] != null; i++)
{
ExtendedAccessToken exToken = isAsync ? await _sources[i].GetTokenAsync(requestContext, cancellationToken).ConfigureAwait(false) : _sources[i].GetToken(requestContext, cancellationToken);
if (exToken.Exception is null)
{
return(scope.Succeeded(exToken.AccessToken));
}
if (exToken.Exception is CredentialUnavailableException)
{
exceptions.Add(exToken.Exception);
}
else
{
exceptions.Add(exToken.Exception);
throw scope.Failed(AuthenticationFailedException.CreateAggregateException($"{UnhandledExceptionMessage} {_sources[i].GetType().Name} failed with unhandled exception {exToken.Exception.Message}.", new ReadOnlyMemory <object>(_sources, 0, i + 1), exceptions));
}
}
throw scope.Failed(AuthenticationFailedException.CreateAggregateException(DefaultExceptionMessage, new ReadOnlyMemory <object>(_sources, 0, i), exceptions));
}
private async Task <AccessToken> GetTokenAsync(bool isAsync, TokenRequestContext requestContext, CancellationToken cancellationToken)
{
using CredentialDiagnosticScope scope = _pipeline.StartGetTokenScope("DefaultAzureCredential.GetToken", requestContext);
List <Exception> exceptions = new List <Exception>();
int i;
for (i = 0; i < _sources.Length && _sources[i] != null; i++)
{
ExtendedAccessToken exToken = isAsync ? await _sources[i].GetTokenAsync(requestContext, cancellationToken).ConfigureAwait(false) : _sources[i].GetToken(requestContext, cancellationToken);
if (exToken.Exception is null)
{
return(scope.Succeeded(exToken.AccessToken));
}
if (exToken.Exception is CredentialUnavailableException)
{
exceptions.Add(exToken.Exception);
}
else
{
throw scope.Failed(new AuthenticationFailedException(UnhandledExceptionMessage, exToken.Exception));
}
}
StringBuilder errorMsg = new StringBuilder(DefaultExceptionMessage);
foreach (Exception ex in exceptions)
{
errorMsg.Append(Environment.NewLine).Append(ex.Message);
}
throw scope.Failed(new CredentialUnavailableException(errorMsg.ToString()));
}