import requests from itertools import cycle from threading import RLock, local from searx import settings from time import time class HTTPAdapterWithConnParams(requests.adapters.HTTPAdapter): def __init__(self, pool_connections=requests.adapters.DEFAULT_POOLSIZE, pool_maxsize=requests.adapters.DEFAULT_POOLSIZE, max_retries=requests.adapters.DEFAULT_RETRIES, pool_block=requests.adapters.DEFAULT_POOLBLOCK, **conn_params): if max_retries == requests.adapters.DEFAULT_RETRIES: self.max_retries = requests.adapters.Retry(0, read=False) else: self.max_retries = requests.adapters.Retry.from_int(max_retries) self.config = {} self.proxy_manager = {} super(requests.adapters.HTTPAdapter, self).__init__() self._pool_connections = pool_connections self._pool_maxsize = pool_maxsize self._pool_block = pool_block self._conn_params = conn_params self.init_poolmanager(pool_connections, pool_maxsize, block=pool_block, **conn_params) def __setstate__(self, state): # Can't handle by adding 'proxy_manager' to self.__attrs__ because # because self.poolmanager uses a lambda function, which isn't pickleable. self.proxy_manager = {} self.config = {} for attr, value in state.items(): setattr(self, attr, value) self.init_poolmanager(self._pool_connections, self._pool_maxsize, block=self._pool_block, **self._conn_params) threadLocal = local() connect = settings['outgoing'].get('pool_connections', 100) # Magic number kept from previous code maxsize = settings['outgoing'].get('pool_maxsize', requests.adapters.DEFAULT_POOLSIZE) # Picked from constructor if settings['outgoing'].get('source_ips'): http_adapters = cycle(HTTPAdapterWithConnParams(pool_connections=connect, pool_maxsize=maxsize, source_address=(source_ip, 0)) for source_ip in settings['outgoing']['source_ips']) https_adapters = cycle(HTTPAdapterWithConnParams(pool_connections=connect, pool_maxsize=maxsize, source_address=(source_ip, 0)) for source_ip in settings['outgoing']['source_ips']) else: http_adapters = cycle((HTTPAdapterWithConnParams(pool_connections=connect, pool_maxsize=maxsize), )) https_adapters = cycle((HTTPAdapterWithConnParams(pool_connections=connect, pool_maxsize=maxsize), )) class SessionSinglePool(requests.Session): def __init__(self): super(SessionSinglePool, self).__init__() # reuse the same adapters with RLock(): self.adapters.clear() self.mount('https://', next(https_adapters)) self.mount('http://', next(http_adapters)) def close(self): """Call super, but clear adapters since there are managed globaly""" self.adapters.clear() super(SessionSinglePool, self).close() def set_timeout_for_thread(timeout, start_time=None): threadLocal.timeout = timeout threadLocal.start_time = start_time def reset_time_for_thread(): threadLocal.total_time = 0 def get_time_for_thread(): return threadLocal.total_time def request(method, url, **kwargs): """same as requests/requests/api.py request(...)""" time_before_request = time() # session start session = SessionSinglePool() # proxies kwargs['proxies'] = settings['outgoing'].get('proxies') or None # timeout if 'timeout' in kwargs: timeout = kwargs['timeout'] else: timeout = getattr(threadLocal, 'timeout', None) if timeout is not None: kwargs['timeout'] = timeout # do request response = session.request(method=method, url=url, **kwargs) time_after_request = time() # is there a timeout for this engine ? if timeout is not None: timeout_overhead = 0.2 # seconds # start_time = when the user request started start_time = getattr(threadLocal, 'start_time', time_before_request) search_duration = time_after_request - start_time if search_duration > timeout + timeout_overhead: raise requests.exceptions.Timeout(response=response) # session end session.close() # threadLocal.total_time += time_after_request - time_before_request return response def get(url, **kwargs): kwargs.setdefault('allow_redirects', True) return request('get', url, **kwargs) def options(url, **kwargs): kwargs.setdefault('allow_redirects', True) return request('options', url, **kwargs) def head(url, **kwargs): kwargs.setdefault('allow_redirects', False) return request('head', url, **kwargs) def post(url, data=None, **kwargs): return request('post', url, data=data, **kwargs) def put(url, data=None, **kwargs): return request('put', url, data=data, **kwargs) def patch(url, data=None, **kwargs): return request('patch', url, data=data, **kwargs) def delete(url, **kwargs): return request('delete', url, **kwargs)