import logging import os from os import urandom from aiohttp import web from aiohttp_auth import auth from aiohttp_session import session_middleware from aiohttp_session.cookie_storage import EncryptedCookieStorage from aiohttp_swagger import setup_swagger from cbpi_api.exceptions import CBPiException from controller.job_controller import JobController from core.websocket import CBPiWebSocket from core.controller.actor_controller import ActorController from core.controller.config_controller import ConfigController from core.controller.kettle_controller import KettleController from core.controller.notification_controller import NotificationController from core.controller.plugin_controller import PluginController from core.controller.sensor_controller import SensorController from core.controller.step_controller import StepController from core.controller.system_controller import SystemController from core.database.model import DBModel from core.eventbus import CBPiEventBus from core.http_endpoints.http_login import Login from core.utils import * logger = logging.getLogger(__name__) logging.basicConfig(level=logging.INFO) @web.middleware async def error_middleware(request, handler): try: response = await handler(request) if response.status != 404: return response message = response.message except web.HTTPException as ex: if ex.status != 404: raise message = ex.reason except CBPiException as ex: message = str(ex) return web.json_response(status=500, data={'error': message}) return web.json_response({'error': message}) class CraftBeerPi(): def __init__(self): self.static_config = load_config(os.path.join(os.path.dirname(__file__), '../config/config.yaml')) self.database_file = "./craftbeerpi.db" logger.info("Init CraftBeerPI") policy = auth.SessionTktAuthentication(urandom(32), 60, include_ip=True) middlewares = [web.normalize_path_middleware(), session_middleware(EncryptedCookieStorage(urandom(32))), auth.auth_middleware(policy), error_middleware] self.app = web.Application(middlewares=middlewares) self._setup_shutdownhook() self.initializer = [] self.bus = CBPiEventBus(self.app.loop, self) self.ws = CBPiWebSocket(self) self.job = JobController(self) self.actor = ActorController(self) self.sensor = SensorController(self) self.plugin = PluginController(self) self.system = SystemController(self) self.config = ConfigController(self) self.kettle = KettleController(self) self.step = StepController(self) self.notification = NotificationController(self) self.login = Login(self) def _setup_shutdownhook(self): self.shutdown = False async def on_cleanup(app): self.shutdown = True self.app.on_cleanup.append(on_cleanup) def register_on_startup(self, obj): for method in [getattr(obj, f) for f in dir(obj) if callable(getattr(obj, f)) and hasattr(getattr(obj, f), "on_startup")]: name = method.__getattribute__("name") order = method.__getattribute__("order") self.initializer.append(dict(name=name, method=method, order=order)) def register(self, obj, url_prefix=None, static=None): ''' This method parses the provided object :param obj: the object wich will be parsed for registration :param url_prefix: that prefix for HTTP Endpoints :return: None ''' self.register_http_endpoints(obj, url_prefix, static) self.bus.register_object(obj) self.ws.register_object(obj) self.job.register_background_task(obj) self.register_on_startup(obj) def register_http_endpoints(self, obj, url_prefix=None, static=None): routes = [] for method in [getattr(obj, f) for f in dir(obj) if callable(getattr(obj, f)) and hasattr(getattr(obj, f), "route")]: http_method = method.__getattribute__("method") path = method.__getattribute__("path") class_name = method.__self__.__class__.__name__ logger.info("Register Endpoint : %s.%s %s %s%s " % (class_name, method.__name__, http_method, url_prefix, path)) def add_post(): routes.append(web.post(method.__getattribute__("path"), method)) def add_get(): routes.append(web.get(method.__getattribute__("path"), method, allow_head=False)) def add_delete(): routes.append(web.delete(path, method)) def add_put(): routes.append(web.put(path, method)) switcher = { "POST": add_post, "GET": add_get, "DELETE": add_delete, "PUT": add_put } switcher[http_method]() if url_prefix is not None: logger.debug("URL Prefix: %s " % (url_prefix,)) sub = web.Application() sub.add_routes(routes) if static is not None: sub.add_routes([web.static('/static', static, show_index=False)]) self.app.add_subapp(url_prefix, sub) else: self.app.add_routes(routes) def _swagger_setup(self): ''' Internatl method to expose REST API documentation by swagger :return: ''' long_description = """ This is the api for CraftBeerPi """ setup_swagger(self.app, description=long_description, title=self.static_config.get("name", "CraftBeerPi"), api_version=self.static_config.get("version", ""), contact="info@craftbeerpi.com") def notify(self, key, message, type="info"): ''' This is a convinience method to send notification to the client :param key: notification key :param message: notification message :param type: notification type (info,warning,danger,successs) :return: ''' self.bus.sync_fire(topic="notification/%s" % key, key=key, message=message, type=type) async def call_initializer(self, app): self.initializer = sorted(self.initializer, key=lambda k: k['order']) for i in self.initializer: logger.info("CALL INITIALIZER %s - %s " % (i["name"], i["method"].__name__)) await i["method"]() def _print_logo(self): from pyfiglet import Figlet f = Figlet(font='big') logger.info("\n%s" % f.renderText("%s %s" % (self.static_config.get("name"), self.static_config.get("version")))) def _setup_http_index(self): async def http_index(request): url = self.config.static.get("index_url") if url is not None: raise web.HTTPFound(url) else: return web.Response(text="Hello, world") self.app.add_routes([web.get('/', http_index)]) async def init_serivces(self): self._print_logo() await self.job.init() await DBModel.setup() await self.config.init() self._setup_http_index() self.plugin.load_plugins() self.plugin.load_plugins_from_evn() await self.sensor.init() await self.step.init() await self.actor.init() await self.kettle.init() await self.call_initializer(self.app) self._swagger_setup() return self.app def start(self): web.run_app(self.init_serivces(), port=self.static_config.get("port", 8080))