mirror of
https://github.com/bunny-lab-io/Borealis.git
synced 2025-10-26 15:21:57 -06:00
223 lines
7.9 KiB
Python
223 lines
7.9 KiB
Python
"""Stage 2 Borealis Engine application factory.
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Stage 1 introduced the structural skeleton for the Engine runtime. Stage 2
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builds upon that foundation by centralising configuration handling and logging
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initialisation so the Engine mirrors the legacy server's start-up behaviour.
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The factory delegates configuration resolution to :mod:`Data.Engine.config`
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and emits structured logs to ``Logs/Engine/engine.log`` (with an accompanying
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error log) to align with the project's operational practices.
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"""
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from __future__ import annotations
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import importlib.util
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import logging
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import ssl
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import sys
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Any, Mapping, Optional, Sequence, Tuple
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def _require_dependency(module: str, friendly_name: str) -> None:
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if importlib.util.find_spec(module) is None: # pragma: no cover - import check
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raise RuntimeError(
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f"{friendly_name} (Python module '{module}') is required for the Borealis Engine runtime. "
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"Install the packaged dependencies by running Borealis.ps1 or ensure the module is present in the active environment."
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)
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_require_dependency("eventlet", "Eventlet")
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_require_dependency("flask", "Flask")
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_require_dependency("flask_socketio", "Flask-SocketIO")
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import eventlet # type: ignore # noqa: E402 # pragma: no cover - import guarded above
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from eventlet import wsgi as eventlet_wsgi # type: ignore # noqa: E402 # pragma: no cover
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from flask import Flask, request # noqa: E402
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from flask_cors import CORS # noqa: E402
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from flask_socketio import SocketIO # noqa: E402
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from werkzeug.middleware.proxy_fix import ProxyFix # noqa: E402
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eventlet.monkey_patch(thread=False) # pragma: no cover - aligns with legacy runtime
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HttpProtocol = getattr(eventlet_wsgi, "HttpProtocol", None)
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if HttpProtocol is not None: # pragma: no branch - attribute exists in supported versions
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_original_handle_one_request = HttpProtocol.handle_one_request
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def _quiet_tls_http_mismatch(self): # type: ignore[override]
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"""Mirror the legacy suppression of noisy TLS handshake errors."""
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def _close_connection_quietly():
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try:
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self.close_connection = True # type: ignore[attr-defined]
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except Exception:
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pass
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try:
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conn = getattr(self, "socket", None) or getattr(self, "connection", None)
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if conn:
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conn.close()
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except Exception:
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pass
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try:
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return _original_handle_one_request(self)
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except ssl.SSLError as exc: # type: ignore[arg-type]
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reason = getattr(exc, "reason", "")
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reason_text = str(reason).lower() if reason else ""
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message = " ".join(str(arg) for arg in exc.args if arg).lower()
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if (
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"http_request" in message
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or reason_text == "http request"
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or "unknown ca" in message
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or reason_text == "unknown ca"
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or "unknown_ca" in message
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):
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_close_connection_quietly()
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return None
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raise
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except ssl.SSLEOFError:
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_close_connection_quietly()
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return None
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except ConnectionAbortedError:
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_close_connection_quietly()
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return None
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HttpProtocol.handle_one_request = _quiet_tls_http_mismatch # type: ignore[assignment]
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_SOCKETIO_ASYNC_MODE = "eventlet"
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# Ensure the legacy ``Modules`` package is importable when running from the
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# Engine deployment directory.
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_ENGINE_DIR = Path(__file__).resolve().parent
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_SEARCH_ROOTS = [
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_ENGINE_DIR.parent / "Server",
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_ENGINE_DIR.parent.parent / "Data" / "Server",
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_ENGINE_DIR.parent.parent.parent / "Data" / "Server",
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]
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for root in _SEARCH_ROOTS:
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modules_dir = root / "Modules"
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if modules_dir.is_dir():
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root_str = str(root)
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if root_str not in sys.path:
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sys.path.insert(0, root_str)
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from .config import EngineSettings, initialise_engine_logger, load_runtime_config
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@dataclass
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class EngineContext:
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"""Shared handles that Engine services will consume."""
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database_path: str
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logger: logging.Logger
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scheduler: Any
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tls_cert_path: Optional[str]
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tls_key_path: Optional[str]
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tls_bundle_path: Optional[str]
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config: Mapping[str, Any]
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api_groups: Sequence[str]
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__all__ = ["EngineContext", "create_app", "register_engine_api"]
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def _build_engine_context(settings: EngineSettings, logger: logging.Logger) -> EngineContext:
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return EngineContext(
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database_path=settings.database_path,
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logger=logger,
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scheduler=None,
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tls_cert_path=settings.tls_cert_path,
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tls_key_path=settings.tls_key_path,
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tls_bundle_path=settings.tls_bundle_path,
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config=settings.as_dict(),
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api_groups=settings.api_groups,
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)
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def _attach_transition_logging(app: Flask, context: EngineContext, logger: logging.Logger) -> None:
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tracked = {group.strip().lower() for group in context.api_groups if group}
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if not tracked:
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tracked = {"tokens", "enrollment"}
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existing = getattr(app, "_engine_api_tracked_blueprints", set())
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if existing:
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tracked.update(existing)
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setattr(app, "_engine_api_tracked_blueprints", tracked)
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if getattr(app, "_engine_api_logging_installed", False):
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return
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@app.before_request
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def _log_engine_api_bridge() -> None: # pragma: no cover - integration behaviour exercised in higher-level tests
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blueprint = (request.blueprint or "").lower()
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if blueprint and blueprint in getattr(app, "_engine_api_tracked_blueprints", tracked):
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logger.info(
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"Engine handling API request via legacy bridge: %s %s",
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request.method,
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request.path,
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)
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setattr(app, "_engine_api_logging_installed", True)
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def create_app(config: Optional[Mapping[str, Any]] = None) -> Tuple[Flask, SocketIO, EngineContext]:
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"""Create the Stage 2 Engine Flask application."""
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settings: EngineSettings = load_runtime_config(config)
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logger = initialise_engine_logger(settings)
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static_folder = settings.static_folder
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app = Flask(__name__, static_folder=static_folder, static_url_path="")
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app.wsgi_app = ProxyFix(app.wsgi_app, x_proto=1, x_host=1)
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cors_origins = settings.cors_origins
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if cors_origins:
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CORS(app, supports_credentials=True, origins=cors_origins)
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else:
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CORS(app, supports_credentials=True)
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app.secret_key = settings.secret_key
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app.config.update(settings.to_flask_config())
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socketio = SocketIO(
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app,
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cors_allowed_origins="*",
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async_mode=_SOCKETIO_ASYNC_MODE,
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engineio_options={
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"max_http_buffer_size": 100_000_000,
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"max_websocket_message_size": 100_000_000,
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},
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)
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context = _build_engine_context(settings, logger)
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from .services import API, WebSocket, WebUI # Local import to avoid circular deps during bootstrap
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API.register_api(app, context)
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WebUI.register_web_ui(app, context)
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WebSocket.register_realtime(socketio, context)
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logger.debug("Engine application factory completed initialisation.")
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return app, socketio, context
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def register_engine_api(app: Flask, *, config: Optional[Mapping[str, Any]] = None) -> EngineContext:
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"""Register Engine-managed API blueprints onto an existing Flask app."""
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settings: EngineSettings = load_runtime_config(config)
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logger = initialise_engine_logger(settings)
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context = _build_engine_context(settings, logger)
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from .services import API # Local import avoids circular dependency at module import time
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API.register_api(app, context)
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_attach_transition_logging(app, context, logger)
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groups_display = ", ".join(context.api_groups) if context.api_groups else "none"
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logger.info("Engine API delegation activated for groups: %s", groups_display)
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return context
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