import asyncio import logging import os import signal from aiohttp import web from cachetools import LRUCache from datetime import datetime, timedelta from .config import RelayConfig from .database import RelayDatabase from .misc import DotDict, check_open_port, fetch_nodeinfo, set_app from .views import routes class Application(web.Application): def __init__(self, cfgpath): web.Application.__init__(self) self['starttime'] = None self['running'] = False self['is_docker'] = bool(os.environ.get('DOCKER_RUNNING')) self['config'] = RelayConfig(cfgpath, self['is_docker']) if not self['config'].load(): self['config'].save() self['cache'] = DotDict({key: Cache(maxsize=self['config'][key]) for key in self['config'].cachekeys}) self['semaphore'] = asyncio.Semaphore(self['config'].push_limit) set_app(self) self['database'] = RelayDatabase(self['config']) self['database'].load() self.set_signal_handler() @property def cache(self): return self['cache'] @property def config(self): return self['config'] @property def database(self): return self['database'] @property def is_docker(self): return self['is_docker'] @property def semaphore(self): return self['semaphore'] @property def uptime(self): if not self['starttime']: return timedelta(seconds=0) uptime = datetime.now() - self['starttime'] return timedelta(seconds=uptime.seconds) def set_signal_handler(self): for sig in {'SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGTERM'}: try: signal.signal(getattr(signal, sig), self.stop) # some signals don't exist in windows, so skip them except AttributeError: pass def run(self): if not check_open_port(self.config.listen, self.config.port): return logging.error(f'A server is already running on port {self.config.port}') for route in routes: if route[1] == '/stats' and logging.DEBUG < logging.root.level: continue self.router.add_route(*route) logging.info(f'Starting webserver at {self.config.host} ({self.config.listen}:{self.config.port})') asyncio.run(self.handle_run()) def stop(self, *_): self['running'] = False async def handle_run(self): self['running'] = True runner = web.AppRunner(self, access_log_format='%{X-Forwarded-For}i "%r" %s %b "%{User-Agent}i"') await runner.setup() site = web.TCPSite(runner, host = self.config.listen, port = self.config.port, reuse_address = True ) await site.start() self['starttime'] = datetime.now() while self['running']: await asyncio.sleep(0.25) await site.stop() self['starttime'] = None self['running'] = False class Cache(LRUCache): def set_maxsize(self, value): self.__maxsize = int(value) ## Can't sub-class web.Request, so let's just add some properties def request_actor(self): try: return self['actor'] except KeyError: pass def request_message(self): try: return self['message'] except KeyError: pass def request_signature(self): if 'signature' not in self._state: try: self['signature'] = DotDict.new_from_signature(self.headers['signature']) except KeyError: return return self['signature'] setattr(web.Request, 'actor', property(request_actor)) setattr(web.Request, 'message', property(request_message)) setattr(web.Request, 'signature', property(request_signature)) setattr(web.Request, 'cache', property(lambda self: self.app.cache)) setattr(web.Request, 'config', property(lambda self: self.app.config)) setattr(web.Request, 'database', property(lambda self: self.app.database)) setattr(web.Request, 'semaphore', property(lambda self: self.app.semaphore))