longhao 576652571c fix: correct FastMCP interface usage and resolve lint issues
- Fix FastMCP server interface to use correct mcp.run() instead of app.run(host, port)
- Remove unnecessary host and port parameters, use standard STDIO transport
- Fix all ruff lint issues including import sorting and blank lines
- Update ruff configuration to new lint configuration format
- Fix type annotation issues using Union syntax (int | None)
- Ensure uvx pypi-query-mcp-server works correctly
- All tests pass and lint checks pass
2025-05-27 13:44:28 +08:00

57 lines
1.8 KiB
Python

"""Custom exceptions for PyPI Query MCP Server."""
class PyPIError(Exception):
"""Base exception for PyPI-related errors."""
def __init__(self, message: str, status_code: int | None = None):
super().__init__(message)
self.message = message
self.status_code = status_code
class PackageNotFoundError(PyPIError):
"""Raised when a package is not found on PyPI."""
def __init__(self, package_name: str):
message = f"Package '{package_name}' not found on PyPI"
super().__init__(message, status_code=404)
self.package_name = package_name
class NetworkError(PyPIError):
"""Raised when network-related errors occur."""
def __init__(self, message: str, original_error: Exception | None = None):
super().__init__(message)
self.original_error = original_error
class RateLimitError(PyPIError):
"""Raised when API rate limit is exceeded."""
def __init__(self, retry_after: int | None = None):
message = "PyPI API rate limit exceeded"
if retry_after:
message += f". Retry after {retry_after} seconds"
super().__init__(message, status_code=429)
self.retry_after = retry_after
class InvalidPackageNameError(PyPIError):
"""Raised when package name is invalid."""
def __init__(self, package_name: str):
message = f"Invalid package name: '{package_name}'"
super().__init__(message, status_code=400)
self.package_name = package_name
class PyPIServerError(PyPIError):
"""Raised when PyPI server returns a server error."""
def __init__(self, status_code: int, message: str | None = None):
if not message:
message = f"PyPI server error (HTTP {status_code})"
super().__init__(message, status_code=status_code)