a0c507c3ff
- Add ServerSettings class with pydantic-settings for type-safe configuration - Support multiple PyPI mirror sources with priority-based fallback mechanism - Implement RepositoryConfig and RepositoryManager for multi-repository support - Add environment variable support for all configuration options - Include private repository authentication configuration - Add advanced dependency analysis settings (max depth, concurrency, security) - Provide secure credential management with sensitive data masking - Update documentation and configuration examples - Add comprehensive test suite with 23 test cases covering all features - Include demo script showcasing multi-mirror configuration capabilities Configuration features: - Primary, additional, and fallback index URLs - Automatic duplicate URL removal with priority preservation - Runtime configuration reloading - Integration with repository manager for seamless multi-source queries Signed-off-by: longhao <hal.long@outlook.com>
246 lines
8.0 KiB
Python
246 lines
8.0 KiB
Python
"""PyPI API client for package information retrieval."""
|
|
|
|
import asyncio
|
|
import logging
|
|
import re
|
|
from typing import Any
|
|
from urllib.parse import quote
|
|
|
|
import httpx
|
|
|
|
from .exceptions import (
|
|
InvalidPackageNameError,
|
|
NetworkError,
|
|
PackageNotFoundError,
|
|
PyPIServerError,
|
|
RateLimitError,
|
|
)
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class PyPIClient:
|
|
"""Async client for PyPI JSON API."""
|
|
|
|
def __init__(
|
|
self,
|
|
base_url: str = "https://pypi.org/pypi",
|
|
timeout: float = 30.0,
|
|
max_retries: int = 3,
|
|
retry_delay: float = 1.0,
|
|
):
|
|
"""Initialize PyPI client.
|
|
|
|
Args:
|
|
base_url: Base URL for PyPI API
|
|
timeout: Request timeout in seconds
|
|
max_retries: Maximum number of retry attempts
|
|
retry_delay: Delay between retries in seconds
|
|
"""
|
|
self.base_url = base_url.rstrip("/")
|
|
self.timeout = timeout
|
|
self.max_retries = max_retries
|
|
self.retry_delay = retry_delay
|
|
|
|
# Simple in-memory cache
|
|
self._cache: dict[str, dict[str, Any]] = {}
|
|
self._cache_ttl = 300 # 5 minutes
|
|
|
|
# HTTP client configuration
|
|
self._client = httpx.AsyncClient(
|
|
timeout=httpx.Timeout(timeout),
|
|
headers={
|
|
"User-Agent": "pypi-query-mcp-server/0.1.0",
|
|
"Accept": "application/json",
|
|
},
|
|
follow_redirects=True,
|
|
)
|
|
|
|
async def __aenter__(self):
|
|
"""Async context manager entry."""
|
|
return self
|
|
|
|
async def __aexit__(self, exc_type, exc_val, exc_tb):
|
|
"""Async context manager exit."""
|
|
await self.close()
|
|
|
|
async def close(self):
|
|
"""Close the HTTP client."""
|
|
await self._client.aclose()
|
|
|
|
def _validate_package_name(self, package_name: str) -> str:
|
|
"""Validate and normalize package name.
|
|
|
|
Args:
|
|
package_name: Package name to validate
|
|
|
|
Returns:
|
|
Normalized package name
|
|
|
|
Raises:
|
|
InvalidPackageNameError: If package name is invalid
|
|
"""
|
|
if not package_name or not package_name.strip():
|
|
raise InvalidPackageNameError(package_name)
|
|
|
|
# Normalize package name (convert to lowercase, replace _ with -)
|
|
normalized = re.sub(r"[-_.]+", "-", package_name.lower())
|
|
|
|
# Basic validation - package names should contain only alphanumeric, hyphens, dots, underscores
|
|
if not re.match(r"^[a-zA-Z0-9]([a-zA-Z0-9._-]*[a-zA-Z0-9])?$", package_name):
|
|
raise InvalidPackageNameError(package_name)
|
|
|
|
return normalized
|
|
|
|
def _get_cache_key(self, package_name: str, endpoint: str = "info") -> str:
|
|
"""Generate cache key for package data."""
|
|
return f"{endpoint}:{package_name}"
|
|
|
|
def _is_cache_valid(self, cache_entry: dict[str, Any]) -> bool:
|
|
"""Check if cache entry is still valid."""
|
|
import time
|
|
|
|
return time.time() - cache_entry.get("timestamp", 0) < self._cache_ttl
|
|
|
|
async def _make_request(self, url: str) -> dict[str, Any]:
|
|
"""Make HTTP request with retry logic.
|
|
|
|
Args:
|
|
url: URL to request
|
|
|
|
Returns:
|
|
JSON response data
|
|
|
|
Raises:
|
|
NetworkError: For network-related errors
|
|
PackageNotFoundError: When package is not found
|
|
RateLimitError: When rate limit is exceeded
|
|
PyPIServerError: For server errors
|
|
"""
|
|
last_exception = None
|
|
|
|
for attempt in range(self.max_retries + 1):
|
|
try:
|
|
logger.debug(f"Making request to {url} (attempt {attempt + 1})")
|
|
|
|
response = await self._client.get(url)
|
|
|
|
# Handle different HTTP status codes
|
|
if response.status_code == 200:
|
|
return response.json()
|
|
elif response.status_code == 404:
|
|
# Extract package name from URL for better error message
|
|
package_name = url.split("/")[-2] if "/" in url else "unknown"
|
|
raise PackageNotFoundError(package_name)
|
|
elif response.status_code == 429:
|
|
retry_after = response.headers.get("Retry-After")
|
|
retry_after_int = int(retry_after) if retry_after else None
|
|
raise RateLimitError(retry_after_int)
|
|
elif response.status_code >= 500:
|
|
raise PyPIServerError(response.status_code)
|
|
else:
|
|
raise PyPIServerError(
|
|
response.status_code,
|
|
f"Unexpected status code: {response.status_code}",
|
|
)
|
|
|
|
except httpx.TimeoutException as e:
|
|
last_exception = NetworkError(f"Request timeout: {e}", e)
|
|
except httpx.NetworkError as e:
|
|
last_exception = NetworkError(f"Network error: {e}", e)
|
|
except (PackageNotFoundError, RateLimitError, PyPIServerError):
|
|
# Don't retry these errors
|
|
raise
|
|
except Exception as e:
|
|
last_exception = NetworkError(f"Unexpected error: {e}", e)
|
|
|
|
# Wait before retry (except on last attempt)
|
|
if attempt < self.max_retries:
|
|
await asyncio.sleep(
|
|
self.retry_delay * (2**attempt)
|
|
) # Exponential backoff
|
|
|
|
# If we get here, all retries failed
|
|
raise last_exception
|
|
|
|
async def get_package_info(
|
|
self, package_name: str, use_cache: bool = True
|
|
) -> dict[str, Any]:
|
|
"""Get comprehensive package information from PyPI.
|
|
|
|
Args:
|
|
package_name: Name of the package to query
|
|
use_cache: Whether to use cached data if available
|
|
|
|
Returns:
|
|
Dictionary containing package information
|
|
|
|
Raises:
|
|
InvalidPackageNameError: If package name is invalid
|
|
PackageNotFoundError: If package is not found
|
|
NetworkError: For network-related errors
|
|
"""
|
|
normalized_name = self._validate_package_name(package_name)
|
|
cache_key = self._get_cache_key(normalized_name, "info")
|
|
|
|
# Check cache first
|
|
if use_cache and cache_key in self._cache:
|
|
cache_entry = self._cache[cache_key]
|
|
if self._is_cache_valid(cache_entry):
|
|
logger.debug(f"Using cached data for package: {normalized_name}")
|
|
return cache_entry["data"]
|
|
|
|
# Make API request
|
|
url = f"{self.base_url}/{quote(normalized_name)}/json"
|
|
logger.info(f"Fetching package info for: {normalized_name}")
|
|
|
|
try:
|
|
data = await self._make_request(url)
|
|
|
|
# Cache the result
|
|
import time
|
|
|
|
self._cache[cache_key] = {"data": data, "timestamp": time.time()}
|
|
|
|
return data
|
|
|
|
except Exception as e:
|
|
logger.error(f"Failed to fetch package info for {normalized_name}: {e}")
|
|
raise
|
|
|
|
async def get_package_versions(
|
|
self, package_name: str, use_cache: bool = True
|
|
) -> list[str]:
|
|
"""Get list of available versions for a package.
|
|
|
|
Args:
|
|
package_name: Name of the package to query
|
|
use_cache: Whether to use cached data if available
|
|
|
|
Returns:
|
|
List of version strings
|
|
"""
|
|
package_info = await self.get_package_info(package_name, use_cache)
|
|
releases = package_info.get("releases", {})
|
|
return list(releases.keys())
|
|
|
|
async def get_latest_version(
|
|
self, package_name: str, use_cache: bool = True
|
|
) -> str:
|
|
"""Get the latest version of a package.
|
|
|
|
Args:
|
|
package_name: Name of the package to query
|
|
use_cache: Whether to use cached data if available
|
|
|
|
Returns:
|
|
Latest version string
|
|
"""
|
|
package_info = await self.get_package_info(package_name, use_cache)
|
|
return package_info.get("info", {}).get("version", "")
|
|
|
|
def clear_cache(self):
|
|
"""Clear the internal cache."""
|
|
self._cache.clear()
|
|
logger.debug("Cache cleared")
|