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* feat: add CreateOAuthTokenHandler factory to Brokerage base class
Introduce AuthenticationFailed event on TokenHandler raised when all
retry attempts are exhausted. Add CreateOAuthTokenHandler<TRequest,TResponse>
protected factory method on Brokerage that wires the event to OnMessage
(BrokerageMessageType.Error), triggering graceful Lean shutdown on
OAuth token refresh failure without requiring per-brokerage error logic.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* refactor: token retry logic: move to OAuthTokenHandler
* refactor: replace generic OAuthTokenHandler with non-generic, require explicit token lifetime
- Remove generic type parameters <TRequest, TResponse> from OAuthTokenHandler and
CreateOAuthTokenHandler; use LeanAccessTokenMetaDataRequest and
AccessTokenMetaDataResponse directly
- Delete abstract AccessTokenMetaDataRequest; logic moved to LeanAccessTokenMetaDataRequest
- Make tokenLifetime a required constructor parameter — each brokerage must explicitly
declare its OAuth token lifetime to prevent silent 1-hour fallback bugs
- Move expiry tracking into the handler via _tokenExpiresAt (written under lock before the
volatile write of _tokenCredentials, ensuring correct visibility on the fast path)
- Simplify AccessTokenMetaDataResponse to a concrete class with { get; set; } properties
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* test: add unit tests for OAuthTokenHandler and AccessTokenMetaDataResponse
- Make ApiConnection.TryRequest<T>(HttpRequestMessage) virtual to allow
test subclasses to intercept without real HTTP calls
- Add AccessTokenMetaDataResponseTests: two parameterized cases verify that
TokenType defaults to Bearer when absent from JSON (CharlesSchwab pattern)
and deserializes correctly when present (Tastytrade pattern)
- Add OAuthTokenHandlerTests with FakeApiConnection stub:
CharlesSchwab-style response (no tokenType, 30-min lifetime) and
Tastytrade-style response (explicit tokenType + expiresIn/tokenId, 15-min lifetime)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* refactor: backward-compatible OAuth auth with new LeanOAuthTokenHandler hierarchy
- Restore master API: OAuthTokenHandler<TReq,TRes>, AccessTokenMetaDataRequest,
AccessTokenMetaDataResponse, and TokenHandler stay source-compatible for old consumers
- Extend TokenHandler with AuthenticationFailed event; simplify Send() (auth header only)
- Add LeanOAuthTokenHandler: non-generic, thread-safe double-checked locking, explicit
tokenLifetime, retry logic in GetAccessToken, fires AuthenticationFailed on exhaustion
- Add OAuthTokenRequest / OAuthTokenResponse: concrete Lean platform request/response
- Brokerage.CreateOAuthTokenHandler wires AuthenticationFailed to graceful shutdown
- Update tests: OAuthTokenResponseTests, LeanOAuthTokenHandlerTests, TokenHandlerTests
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Some tweaks
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: Martin Molinero <martin.molinero1@gmail.com>
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* Add Api helper methods for POST requests
* Support json serializer setting for json requests
* Minor changes and cleanup
* Make ApiConnection disposable
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* feat: Get AccessToken from Lean API
* feat: create TokenCredentials DTO instead of Tuple
* remove: extra unrequired null reference exceptions on argument check
* remove: SendAsync override in TokenHandler
* feat: override SendAsync in TokenHandler to prevent future bugs
* test:feat: SyncAsync in TokenHandler
* refactor: name property of AccessTokenExpires to Expiration in AccessTokenMetaDataResponse
* feat: add retry logic to getAccessToken in TokenHandler
test:feat: TokenHandler with retry logic
* feat: make retry timeout configurable in ctor
Roman Yavnikov