import asyncio import logging import os import queue import signal import threading from aiohttp import web from datetime import datetime, timedelta from .config import RelayConfig from .database import RelayDatabase from .http_client import HttpClient from .misc import DotDict, check_open_port, 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['config'] = RelayConfig(cfgpath) if not self['config'].load(): self['config'].save() self['workers'] = [] self['last_worker'] = 0 set_app(self) self['database'] = RelayDatabase(self['config']) self['database'].load() self['client'] = HttpClient( database = self.database, limit = self.config.push_limit, timeout = self.config.timeout, cache_size = self.config.json_cache ) self.set_signal_handler() @property def client(self): return self['client'] @property def config(self): return self['config'] @property def database(self): return self['database'] @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 push_message(self, inbox, message): if self.config.workers <= 0: return asyncio.ensure_future(self.client.post(inbox, message)) worker = self['workers'][self['last_worker']] worker.queue.put((inbox, message)) self['last_worker'] += 1 if self['last_worker'] >= len(self['workers']): self['last_worker'] = 0 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 if self.config.workers > 0: for i in range(self.config.workers): worker = PushWorker(self) worker.start() self['workers'].append(worker) 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 self['workers'].clear() class PushWorker(threading.Thread): def __init__(self, app): threading.Thread.__init__(self) self.app = app self.queue = queue.Queue() def run(self): self.client = HttpClient( database = self.app.database, limit = self.app.config.push_limit, timeout = self.app.config.timeout, cache_size = self.app.config.json_cache ) asyncio.run(self.handle_queue()) async def handle_queue(self): while self.app['running']: try: inbox, message = self.queue.get(block=True, timeout=0.25) self.queue.task_done() logging.verbose(f'New push from Thread-{threading.get_ident()}') await self.client.post(inbox, message) except queue.Empty: pass await self.client.close() ## 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_instance(self): try: return self['instance'] 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, 'instance', property(request_instance)) setattr(web.Request, 'message', property(request_message)) setattr(web.Request, 'signature', property(request_signature)) 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))