private async ValueTask <AccessToken> GetTokenImplAsync(bool async, TokenRequestContext requestContext, CancellationToken cancellationToken)
{
using CredentialDiagnosticScope scope = _pipeline.StartGetTokenScopeGroup("DefaultAzureCredential.GetToken", requestContext);
try
{
using var asyncLock = await _credentialLock.GetLockOrValueAsync(async, cancellationToken).ConfigureAwait(false);
AccessToken token;
if (asyncLock.HasValue)
{
token = await GetTokenFromCredentialAsync(asyncLock.Value, requestContext, async, cancellationToken).ConfigureAwait(false);
}
else
{
TokenCredential credential;
(token, credential) = await GetTokenFromSourcesAsync(_sources, requestContext, async, cancellationToken).ConfigureAwait(false);
_sources = default;
asyncLock.SetValue(credential);
}
return(scope.Succeeded(token));
}
catch (Exception e)
{
throw scope.FailWrapAndThrow(e);
}
}