"""
Configuration loader for RegenNexus MCP Server.
Supports environment variables and .env files.
"""
import os
from dataclasses import dataclass, field
from enum import Enum
from typing import Optional
import logging
logger = logging.getLogger(__name__)
class ConnectionMode(Enum):
"""Connection mode to UAP."""
AUTO = "auto" # Try local first, fall back to remote
LOCAL = "local" # Direct import (requires regennexus installed)
REMOTE = "remote" # HTTP/WebSocket API
@dataclass
class MCPConfig:
"""MCP Server configuration."""
# Connection mode
mode: ConnectionMode = ConnectionMode.AUTO
# Remote mode settings
endpoint: Optional[str] = None
api_key: Optional[str] = None
ws_endpoint: Optional[str] = None
timeout: int = 60000 # milliseconds
# Local mode settings
config_path: Optional[str] = None
# Server settings
server_name: str = "regennexus-mcp"
server_version: str = "0.1.0"
# Logging
log_level: str = "INFO"
log_format: str = "text" # "text" or "json"
# Mesh networking
enable_mesh: bool = False
mesh_port: int = 5353
node_id: str = "mcp-server"
@classmethod
def from_env(cls) -> "MCPConfig":
"""Load configuration from environment variables."""
# Parse mode
mode_str = os.getenv("REGENNEXUS_MODE", "auto").lower()
try:
mode = ConnectionMode(mode_str)
except ValueError:
logger.warning(f"Invalid mode '{mode_str}', using 'auto'")
mode = ConnectionMode.AUTO
return cls(
mode=mode,
endpoint=os.getenv("REGENNEXUS_ENDPOINT"),
api_key=os.getenv("REGENNEXUS_API_KEY"),
ws_endpoint=os.getenv("REGENNEXUS_WS"),
timeout=int(os.getenv("REGENNEXUS_TIMEOUT", "60000")),
config_path=os.getenv("REGENNEXUS_CONFIG"),
server_name=os.getenv("REGENNEXUS_SERVER_NAME", "regennexus-mcp"),
log_level=os.getenv("REGENNEXUS_LOG_LEVEL", "INFO"),
log_format=os.getenv("REGENNEXUS_LOG_FORMAT", "text"),
enable_mesh=os.getenv("REGENNEXUS_MESH", "").lower() in ("true", "1", "yes"),
mesh_port=int(os.getenv("REGENNEXUS_MESH_PORT", "5353")),
node_id=os.getenv("REGENNEXUS_NODE_ID", "mcp-server"),
)
def load_dotenv():
"""Load .env file if present."""
try:
from dotenv import load_dotenv as _load_dotenv
_load_dotenv()
except ImportError:
# python-dotenv not installed, skip
pass
def setup_logging(config: MCPConfig):
"""Configure logging based on config."""
import sys
level = getattr(logging, config.log_level.upper(), logging.INFO)
if config.log_format == "json":
fmt = '{"time": "%(asctime)s", "level": "%(levelname)s", "logger": "%(name)s", "message": "%(message)s"}'
else:
fmt = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
logging.basicConfig(
level=level,
format=fmt,
stream=sys.stderr, # Log to stderr, keep stdout for MCP
)
