349 lines
12 KiB
Python
349 lines
12 KiB
Python
import time
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from typing import List, Dict, Callable, Optional, Set
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from urllib.parse import urlparse, urlunsplit, ParseResult
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import logging
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import threading
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import requests
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from tqdm import tqdm
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from .rotating import RotatingProxy
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from ..utils.config import main_settings
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from ..utils.support_classes import DownloadResult
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from ..objects import Target
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class Connection:
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def __init__(
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self,
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host: str,
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proxies: List[dict] = None,
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tries: int = (len(main_settings["proxies"]) + 1) * 4,
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timeout: int = 7,
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logger: logging.Logger = logging.getLogger("connection"),
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header_values: Dict[str, str] = None,
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accepted_response_codes: Set[int] = None,
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semantic_not_found: bool = True,
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sleep_after_404: float = 0.0,
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hearthbeat_interval = 0,
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):
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if proxies is None:
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proxies = main_settings["proxies"]
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if header_values is None:
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header_values = dict()
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self.HEADER_VALUES = header_values
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self.LOGGER = logger
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self.HOST = urlparse(host)
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self.TRIES = tries
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self.TIMEOUT = timeout
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self.rotating_proxy = RotatingProxy(proxy_list=proxies)
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self.ACCEPTED_RESPONSE_CODES = accepted_response_codes or {200}
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self.SEMANTIC_NOT_FOUND = semantic_not_found
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self.sleep_after_404 = sleep_after_404
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self.session = requests.Session()
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self.session.headers = self.get_header(**self.HEADER_VALUES)
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self.session.proxies = self.rotating_proxy.current_proxy
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self.session_is_occupied: bool = False
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self.hearthbeat_thread = None
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self.hearthbeat_interval = hearthbeat_interval
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@property
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def user_agent(self) -> str:
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return self.session.headers.get("user-agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36")
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def start_hearthbeat(self):
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if self.hearthbeat_interval <= 0:
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self.LOGGER.warning(f"Can't start a hearthbeat with {self.hearthbeat_interval}s in between.")
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self.hearthbeat_thread = threading.Thread(target=self._hearthbeat_loop, args=(self.hearthbeat_interval, ), daemon=True)
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self.hearthbeat_thread.start()
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def hearthbeat_failed(self):
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self.LOGGER.warning(f"I just died... (The hearthbeat failed)")
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def hearthbeat(self):
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# Your code to send heartbeat requests goes here
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print("the hearth is beating, but it needs to be implemented ;-;\nFuck youuuu for setting hearthbeat in the constructor to true, but not implementing the method Connection.hearbeat()")
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def _hearthbeat_loop(self, interval: float):
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def hearthbeat_wrapper():
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self.session_is_occupied = True
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self.LOGGER.debug(f"I am living. (sending a hearthbeat)")
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self.hearthbeat()
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self.LOGGER.debug(f"finished the hearthbeat")
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self.session_is_occupied = False
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while True:
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hearthbeat_wrapper()
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time.sleep(interval)
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def base_url(self, url: ParseResult = None):
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if url is None:
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url = self.HOST
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return urlunsplit((url.scheme, url.netloc, "", "", ""))
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def get_header(self, **header_values) -> Dict[str, str]:
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return {
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"user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36",
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"Connection": "keep-alive",
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# "Host": self.HOST.netloc,
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"Referer": self.base_url(),
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**header_values
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}
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def rotate(self):
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self.session.proxies = self.rotating_proxy.rotate()
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def _update_headers(
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self,
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headers: Optional[dict],
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refer_from_origin: bool,
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url: ParseResult
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) -> Dict[str, str]:
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if headers is None:
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headers = dict()
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if not refer_from_origin:
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headers["Referer"] = self.base_url(url=url)
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return headers
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def _request(
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self,
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request: Callable,
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try_count: int,
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accepted_response_codes: set,
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url: str,
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timeout: float,
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headers: dict,
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refer_from_origin: bool = True,
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raw_url: bool = False,
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sleep_after_404: float = None,
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is_hearthbeat: bool = False,
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**kwargs
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) -> Optional[requests.Response]:
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if sleep_after_404 is None:
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sleep_after_404 = self.sleep_after_404
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if try_count >= self.TRIES:
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return
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if timeout is None:
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timeout = self.TIMEOUT
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parsed_url = urlparse(url)
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headers = self._update_headers(
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headers=headers,
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refer_from_origin=refer_from_origin,
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url=parsed_url
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)
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request_url = parsed_url.geturl() if not raw_url else url
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connection_failed = False
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try:
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if self.session_is_occupied and not is_hearthbeat:
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self.LOGGER.info(f"Waiting for the hearthbeat to finish.")
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while self.session_is_occupied and not is_hearthbeat:
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pass
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r: requests.Response = request(request_url, timeout=timeout, headers=headers, **kwargs)
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if r.status_code in accepted_response_codes:
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return r
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if self.SEMANTIC_NOT_FOUND and r.status_code == 404:
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self.LOGGER.warning(f"Couldn't find url (404): {request_url}")
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return None
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except requests.exceptions.Timeout:
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self.LOGGER.warning(f"Request timed out at \"{request_url}\": ({try_count}-{self.TRIES})")
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connection_failed = True
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except requests.exceptions.ConnectionError:
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self.LOGGER.warning(f"Couldn't connect to \"{request_url}\": ({try_count}-{self.TRIES})")
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connection_failed = True
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if not connection_failed:
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self.LOGGER.warning(f"{self.HOST.netloc} responded wit {r.status_code} "
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f"at {url}. ({try_count}-{self.TRIES})")
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self.LOGGER.debug(r.content)
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if sleep_after_404 != 0:
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self.LOGGER.warning(f"Waiting for {sleep_after_404} seconds.")
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time.sleep(sleep_after_404)
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self.rotate()
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return self._request(
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request=request,
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try_count=try_count+1,
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accepted_response_codes=accepted_response_codes,
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url=url,
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timeout=timeout,
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headers=headers,
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sleep_after_404=sleep_after_404,
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is_hearthbeat=is_hearthbeat,
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**kwargs
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)
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def get(
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self,
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url: str,
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refer_from_origin: bool = True,
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stream: bool = False,
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accepted_response_codes: set = None,
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timeout: float = None,
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headers: dict = None,
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raw_url: bool = False,
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**kwargs
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) -> Optional[requests.Response]:
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if accepted_response_codes is None:
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accepted_response_codes = self.ACCEPTED_RESPONSE_CODES
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r = self._request(
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request=self.session.get,
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try_count=0,
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accepted_response_codes=accepted_response_codes,
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url=url,
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timeout=timeout,
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headers=headers,
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raw_url=raw_url,
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refer_from_origin=refer_from_origin,
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stream=stream,
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**kwargs
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)
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if r is None:
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self.LOGGER.warning(f"Max attempts ({self.TRIES}) exceeded for: GET:{url}")
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return r
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def post(
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self,
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url: str,
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json: dict = None,
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refer_from_origin: bool = True,
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stream: bool = False,
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accepted_response_codes: set = None,
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timeout: float = None,
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headers: dict = None,
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raw_url: bool = False,
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**kwargs
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) -> Optional[requests.Response]:
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r = self._request(
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request=self.session.post,
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try_count=0,
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accepted_response_codes=accepted_response_codes or self.ACCEPTED_RESPONSE_CODES,
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url=url,
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timeout=timeout,
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headers=headers,
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refer_from_origin=refer_from_origin,
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raw_url=raw_url,
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json=json,
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stream=stream,
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**kwargs
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)
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if r is None:
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self.LOGGER.warning(f"Max attempts ({self.TRIES}) exceeded for: GET:{url}")
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self.LOGGER.warning(f"payload: {json}")
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return r
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def stream_into(
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self,
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url: str,
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target: Target,
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description: str = "download",
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refer_from_origin: bool = True,
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accepted_response_codes: set = None,
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timeout: float = None,
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headers: dict = None,
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raw_url: bool = False,
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chunk_size: int = main_settings["chunk_size"],
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try_count: int = 0,
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progress: int = 0,
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**kwargs
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) -> DownloadResult:
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if progress > 0:
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if headers is None:
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headers = dict()
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headers["Range"] = f"bytes={target.size}-"
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if accepted_response_codes is None:
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accepted_response_codes = self.ACCEPTED_RESPONSE_CODES
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r = self._request(
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request=self.session.get,
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try_count=0,
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accepted_response_codes=accepted_response_codes,
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url=url,
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timeout=timeout,
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headers=headers,
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raw_url=raw_url,
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refer_from_origin=refer_from_origin,
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stream=True,
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**kwargs
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)
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if r is None:
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return DownloadResult(error_message=f"Could not establish connection to: {url}")
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target.create_path()
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total_size = int(r.headers.get('content-length'))
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progress = 0
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retry = False
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with target.open("ab") as f:
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"""
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https://en.wikipedia.org/wiki/Kilobyte
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> The internationally recommended unit symbol for the kilobyte is kB.
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"""
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with tqdm(total=total_size-target.size, unit='B', unit_scale=True, unit_divisor=1024, desc=description) as t:
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try:
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for chunk in r.iter_content(chunk_size=chunk_size):
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size = f.write(chunk)
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progress += size
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t.update(size)
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except requests.exceptions.ConnectionError:
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if try_count >= self.TRIES:
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self.LOGGER.warning(f"Stream timed out at \"{url}\": to many retries, aborting.")
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return DownloadResult(error_message=f"Stream timed out from {url}, reducing the chunksize might help.")
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self.LOGGER.warning(f"Stream timed out at \"{url}\": ({try_count}-{self.TRIES})")
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retry = True
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if total_size > progress:
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retry = True
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if retry:
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self.LOGGER.warning(f"Retrying stream...")
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accepted_response_codes.add(206)
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return self.stream_into(
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url = url,
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target = target,
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description = description,
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try_count=try_count+1,
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progress=progress,
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accepted_response_codes=accepted_response_codes,
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timeout=timeout,
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headers=headers,
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raw_url=raw_url,
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refer_from_origin=refer_from_origin,
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chunk_size=chunk_size,
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**kwargs
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)
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return DownloadResult()
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