wrongmove/rec/exceptions.py

"""Custom exceptions for Rightmove API errors."""


class RightmoveAPIError(Exception):
    """Base exception for all Rightmove API errors."""

    pass


class ThrottlingError(RightmoveAPIError):
    """Base exception for throttling-related errors.

    Indicates that Rightmove is limiting our requests and we should back off.
    """

    pass


class RateLimitError(ThrottlingError):
    """HTTP 429 - Too Many Requests.

    Rightmove is explicitly rate limiting our requests.
    """

    pass


class ServiceUnavailableError(ThrottlingError):
    """HTTP 503 - Service Unavailable.

    Rightmove's service is temporarily unavailable, possibly due to overload.
    """

    pass


class IPBlockedError(ThrottlingError):
    """HTTP 403 - Forbidden (IP blocked).

    Our IP may be blocked or blacklisted by Rightmove.
    """

    pass


class SlowResponseError(ThrottlingError):
    """Response time exceeded threshold.

    API is responding very slowly, indicating potential throttling or overload.
    """

    pass


class UnexpectedEmptyResponseError(RightmoveAPIError):
    """Empty response received when data was expected."""

    pass


class InvalidResponseError(RightmoveAPIError):
    """Response contains error messages or invalid data."""

    pass


class CircuitBreakerOpenError(RightmoveAPIError):
    """Circuit breaker is open, requests are being blocked.

    The circuit breaker has detected too many failures and is preventing
    further requests to allow the service to recover.
    """

    pass


class RoutingApiError(Exception):
    """Error from the Google Routes API."""

    def __init__(self, status_code: int, response_body: dict):
        self.status_code = status_code
        self.response_body = response_body
        super().__init__(
            f"Routes API returned status {status_code}: {response_body}"
        )