Files
mcias/clients/python/mcias_client/_errors.py
Kyle Isom 0c441f5c4f Implement Phase 9: client libraries (Go, Rust, Lisp, Python)
- clients/README.md: canonical API surface and error type reference
- clients/testdata/: shared JSON response fixtures
- clients/go/: mciasgoclient package; net/http + TLS 1.2+; sync.RWMutex
  token state; DisallowUnknownFields on all decoders; 25 tests pass
- clients/rust/: async mcias-client crate; reqwest+rustls (no OpenSSL);
  thiserror MciasError enum; Arc<RwLock> token state; 22+1 tests pass;
  cargo clippy -D warnings clean
- clients/lisp/: ASDF mcias-client; dexador HTTP, yason JSON; mcias-error
  condition hierarchy; Hunchentoot mock-dispatcher; 37 fiveam checks pass
  on SBCL 2.6.1; yason boolean normalisation in validate-token
- clients/python/: mcias_client package (Python 3.11+); httpx sync;
  py.typed; dataclasses; 32 pytest tests; mypy --strict + ruff clean
- test/mock/mockserver.go: in-memory mock server for Go client tests
- ARCHITECTURE.md §19: updated per-language notes to match implementation
- PROGRESS.md: Phase 9 marked complete
- .gitignore: exclude clients/rust/target/, python .venv, .pytest_cache,
  .fasl files
Security: token never logged or exposed in error messages in any library;
TLS enforced in all four languages; token stored under lock/mutex/RwLock
2026-03-11 16:38:32 -07:00

31 lines
1.2 KiB
Python

"""Typed exception hierarchy for MCIAS client errors."""
class MciasError(Exception):
"""Base exception for all MCIAS API errors."""
def __init__(self, status_code: int, message: str) -> None:
super().__init__(f"HTTP {status_code}: {message}")
self.status_code = status_code
self.message = message
class MciasAuthError(MciasError):
"""401 Unauthorized — token missing, invalid, or expired."""
class MciasForbiddenError(MciasError):
"""403 Forbidden — insufficient role."""
class MciasNotFoundError(MciasError):
"""404 Not Found — resource does not exist."""
class MciasInputError(MciasError):
"""400 Bad Request — malformed request."""
class MciasConflictError(MciasError):
"""409 Conflict — e.g. duplicate username."""
class MciasServerError(MciasError):
"""5xx — unexpected server error."""
def raise_for_status(status_code: int, message: str) -> None:
"""Raise the appropriate MciasError subclass for the given status code."""
exc_map = {
400: MciasInputError,
401: MciasAuthError,
403: MciasForbiddenError,
404: MciasNotFoundError,
409: MciasConflictError,
}
cls = exc_map.get(status_code, MciasServerError)
raise cls(status_code, message)