public async Task <GlobalXApiToken> RefreshAndPersistTokenForUser(string userId)
{
/// First request a lock for this user's token before we do anything with it.
/// This does not require the token to exist.
/// <see cref="GlobalXApiTokenLockInfo"/> implements <see cref="IDisposable"/> which will
/// delete the lock when disposed, so it does not need to be deleted explicitly in this code.
using (var lockInfo = await RequestApiTokenLock(userId))
{
var existingToken = await _globalXApiTokenRepository.GetTokenForUser(userId);
Exception refreshException = null;
if (existingToken != null && !string.IsNullOrEmpty(existingToken.RefreshToken))
{
try
{
var refreshedToken = await SendAccessTokenRefreshRequest(existingToken);
if (!refreshedToken.AccessTokenHasExpired(_clock))
{
return(refreshedToken);
}
}
catch (Exception ex)
{
refreshException = ex;
}
}
var credentials = await _globalXCredentialsRepository.GetCredentialsForUser(userId);
if (credentials is null)
{
throw new GlobalXApiCredentialsNotFoundException(
$"Could not find an API token to refresh, nor credentials to request a new token for user '{userId}'.",
refreshException);
}
var tokenFromCredentials = await SendAccessTokenFromCredentialsRequest(credentials);
await _globalXApiTokenRepository.AddOrUpdateGlobalXApiToken(tokenFromCredentials, lockInfo);
return(tokenFromCredentials);
}
}
protected override async Task Handle(StoreGlobalXApiTokenCommand command, CancellationToken token)
{
if (command is null)
{
throw new ArgumentNullException(nameof(command));
}
await _validator.ValidateAndThrowAsync(command);
await _globalXApiTokenRepository.AddOrUpdateGlobalXApiToken(command.GlobalXApiToken, null, overrideAndClearLock : true);
}