TokenKeeper constructor

TokenKeeper({ required TokenStorage storage, required TokenRefresher refresher, Duration proactiveWindow = Duration.zero, Clock clock = const Clock(), RefreshRetryConfig retryConfig = const RefreshRetryConfig(), TokenKeeperLogger logger = noopLogger, })

Creates a keeper.

• storage persists the current token between calls.
• refresher performs the actual refresh API call.
• proactiveWindow — refresh ahead of expiry by this much time. Set to Duration.zero (default) to refresh only after expiry.
• clock — injectable for tests.
• retryConfig — controls retries inside a single refresh attempt.
• logger — observability hook.

Implementation

TokenKeeper({
  required TokenStorage storage,
  required TokenRefresher refresher,
  Duration proactiveWindow = Duration.zero,
  Clock clock = const Clock(),
  RefreshRetryConfig retryConfig = const RefreshRetryConfig(),
  TokenKeeperLogger logger = noopLogger,
})  : _storage = storage,
      _refresher = refresher,
      _proactiveWindow = proactiveWindow,
      _clock = clock,
      _retry = retryConfig,
      _log = logger;