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"""
Configuration management for the HF EDA MCP Server.
This module provides configuration classes and utilities for managing
server settings, authentication, caching, and performance parameters.
"""
import os
import logging
import sys
from typing import Optional, Dict, Any
from dataclasses import dataclass, field
@dataclass
class ServerConfig:
"""Configuration class for the HF EDA MCP Server."""
# Server settings
port: int = 7860
host: str = "0.0.0.0"
mcp_server: bool = True
share: bool = False
# Authentication settings
hf_token: Optional[str] = None
# Logging settings
log_level: str = "INFO"
log_format: str = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
# Cache settings
cache_dir: Optional[str] = None
max_cache_size: int = 1000 # MB
# Performance settings
max_sample_size: int = 50000
max_concurrent_requests: int = 10
request_timeout: int = 300 # seconds
# Additional Gradio settings
gradio_settings: Dict[str, Any] = field(default_factory=dict)
@classmethod
def from_env(cls) -> "ServerConfig":
"""Create configuration from environment variables."""
config = cls()
# Server settings
config.port = int(os.getenv("HF_EDA_PORT", config.port))
config.host = os.getenv("HF_EDA_HOST", config.host)
config.mcp_server = os.getenv("HF_EDA_MCP_ENABLED", "true").lower() == "true"
config.share = os.getenv("HF_EDA_SHARE", "false").lower() == "true"
# Authentication
config.hf_token = os.getenv("HF_TOKEN")
# Logging
config.log_level = os.getenv("HF_EDA_LOG_LEVEL", config.log_level).upper()
# Cache settings
config.cache_dir = os.getenv("HF_EDA_CACHE_DIR")
config.max_cache_size = int(
os.getenv("HF_EDA_MAX_CACHE_SIZE", config.max_cache_size)
)
# Performance settings
config.max_sample_size = int(
os.getenv("HF_EDA_MAX_SAMPLE_SIZE", config.max_sample_size)
)
config.max_concurrent_requests = int(
os.getenv("HF_EDA_MAX_CONCURRENT", config.max_concurrent_requests)
)
config.request_timeout = int(
os.getenv("HF_EDA_REQUEST_TIMEOUT", config.request_timeout)
)
return config
def setup_logging(config: ServerConfig) -> logging.Logger:
"""Set up logging configuration."""
# Configure root logger
logging.basicConfig(
level=getattr(logging, config.log_level),
format=config.log_format,
handlers=[
logging.StreamHandler(sys.stdout),
],
)
# Create logger for this module
logger = logging.getLogger(__name__)
# Set specific log levels for external libraries
logging.getLogger("gradio").setLevel(logging.WARNING)
logging.getLogger("httpx").setLevel(logging.WARNING)
logging.getLogger("urllib3").setLevel(logging.WARNING)
return logger
def validate_config(config: ServerConfig) -> None:
"""Validate server configuration and log warnings for potential issues."""
logger = logging.getLogger(__name__)
# Validate port range
if not (1024 <= config.port <= 65535):
logger.warning(
f"Port {config.port} may require elevated privileges or be invalid"
)
# Check cache directory
if config.cache_dir:
try:
os.makedirs(config.cache_dir, exist_ok=True)
if not os.access(config.cache_dir, os.W_OK):
logger.error(f"Cache directory {config.cache_dir} is not writable")
raise PermissionError(
f"Cannot write to cache directory: {config.cache_dir}"
)
except Exception as e:
logger.error(
f"Failed to create/access cache directory {config.cache_dir}: {e}"
)
raise
# Validate performance settings
if config.max_sample_size > 100000:
logger.warning(
f"Large max_sample_size ({config.max_sample_size}) may cause memory issues"
)
if config.request_timeout < 30:
logger.warning(
f"Short request timeout ({config.request_timeout}s) may cause failures for large datasets"
)
# Check authentication
if not config.hf_token:
logger.warning(
"No HuggingFace token configured - only public datasets will be accessible"
)
logger.info("Set HF_TOKEN environment variable to access private datasets")
else:
logger.info("HuggingFace token configured - private datasets accessible")
# Global configuration instance
_global_config: Optional[ServerConfig] = None
def get_config() -> ServerConfig:
"""Get the global configuration instance."""
global _global_config
if _global_config is None:
_global_config = ServerConfig.from_env()
return _global_config
def set_config(config: ServerConfig) -> None:
"""Set the global configuration instance."""
global _global_config
_global_config = config |