276 lines
10 KiB
Python
276 lines
10 KiB
Python
import asyncio
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import json
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import random
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from typing import Any, Callable, Dict, List, Optional, Union
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from urllib.parse import urlencode
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import httpx
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from playwright.async_api import BrowserContext
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from tenacity import (RetryError, retry, stop_after_attempt,
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wait_fixed)
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import config
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from base.base_crawler import AbstractApiClient
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from model.m_baidu_tieba import TiebaNote, TiebaComment
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from proxy.proxy_ip_pool import ProxyIpPool
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from tools import utils
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from .field import SearchNoteType, SearchSortType
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from .help import TieBaExtractor
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class BaiduTieBaClient(AbstractApiClient):
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def __init__(
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self,
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timeout=10,
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ip_pool=None,
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default_ip_proxy=None,
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):
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self.ip_pool: Optional[ProxyIpPool] = ip_pool
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self.timeout = timeout
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self.headers = {
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"User-Agent": utils.get_user_agent(),
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"Cookies": "",
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}
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self._host = "https://tieba.baidu.com"
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self._page_extractor = TieBaExtractor()
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self.default_ip_proxy = default_ip_proxy
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@retry(stop=stop_after_attempt(3), wait=wait_fixed(1))
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async def request(self, method, url, return_ori_content=False, proxies=None, **kwargs) -> Union[str, Any]:
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"""
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封装httpx的公共请求方法，对请求响应做一些处理
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Args:
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method: 请求方法
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url: 请求的URL
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return_ori_content: 是否返回原始内容
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proxies: 代理IP
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**kwargs: 其他请求参数，例如请求头、请求体等
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Returns:
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"""
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actual_proxies = proxies if proxies else self.default_ip_proxy
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async with httpx.AsyncClient(proxies=actual_proxies) as client:
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response = await client.request(
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method, url, timeout=self.timeout,
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headers=self.headers, **kwargs
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)
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if response.status_code != 200:
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utils.logger.error(f"Request failed, method: {method}, url: {url}, status code: {response.status_code}")
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utils.logger.error(f"Request failed, response: {response.text}")
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raise Exception(f"Request failed, method: {method}, url: {url}, status code: {response.status_code}")
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if response.text == "" or response.text == "blocked":
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utils.logger.error(f"request params incrr, response.text: {response.text}")
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raise Exception("account blocked")
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if return_ori_content:
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return response.text
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return response.json()
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async def get(self, uri: str, params=None, return_ori_content=False, **kwargs) -> Any:
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"""
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GET请求，对请求头签名
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Args:
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uri: 请求路由
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params: 请求参数
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return_ori_content: 是否返回原始内容
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Returns:
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"""
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final_uri = uri
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if isinstance(params, dict):
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final_uri = (f"{uri}?"
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f"{urlencode(params)}")
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try:
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res = await self.request(method="GET", url=f"{self._host}{final_uri}",
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return_ori_content=return_ori_content,
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**kwargs)
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return res
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except RetryError as e:
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if self.ip_pool:
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proxie_model = await self.ip_pool.get_proxy()
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_, proxies = utils.format_proxy_info(proxie_model)
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res = await self.request(method="GET", url=f"{self._host}{final_uri}",
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return_ori_content=return_ori_content,
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proxies=proxies,
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**kwargs)
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self.default_ip_proxy = proxies
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return res
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utils.logger.error(f"[BaiduTieBaClient.get] 达到了最大重试次数，IP已经被Block，请尝试更换新的IP代理: {e}")
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raise e
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async def post(self, uri: str, data: dict, **kwargs) -> Dict:
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"""
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POST请求，对请求头签名
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Args:
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uri: 请求路由
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data: 请求体参数
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Returns:
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"""
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json_str = json.dumps(data, separators=(',', ':'), ensure_ascii=False)
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return await self.request(method="POST", url=f"{self._host}{uri}",
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data=json_str, **kwargs)
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async def pong(self) -> bool:
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"""
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用于检查登录态是否失效了
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Returns:
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"""
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utils.logger.info("[BaiduTieBaClient.pong] Begin to pong tieba...")
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try:
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uri = "/mo/q/sync"
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res: Dict = await self.get(uri)
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utils.logger.info(f"[BaiduTieBaClient.pong] res: {res}")
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if res and res.get("no") == 0:
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ping_flag = True
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else:
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utils.logger.info(f"[BaiduTieBaClient.pong] user not login, will try to login again...")
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ping_flag = False
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except Exception as e:
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utils.logger.error(f"[BaiduTieBaClient.pong] Ping tieba failed: {e}, and try to login again...")
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ping_flag = False
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return ping_flag
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async def update_cookies(self, browser_context: BrowserContext):
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"""
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API客户端提供的更新cookies方法，一般情况下登录成功后会调用此方法
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Args:
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browser_context: 浏览器上下文对象
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Returns:
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"""
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pass
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async def get_notes_by_keyword(
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self, keyword: str,
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page: int = 1,
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page_size: int = 10,
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sort: SearchSortType = SearchSortType.TIME_DESC,
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note_type: SearchNoteType = SearchNoteType.FIXED_THREAD,
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) -> List[TiebaNote]:
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"""
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根据关键词搜索贴吧帖子
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Args:
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keyword: 关键词
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page: 分页第几页
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page_size: 每页大小
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sort: 结果排序方式
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note_type: 帖子类型（主题贴｜主题+回复混合模式）
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Returns:
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"""
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uri = "/f/search/res"
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params = {
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"isnew": 1,
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"qw": keyword,
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"rn": page_size,
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"pn": page,
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"sm": sort.value,
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"only_thread": note_type.value
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}
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page_content = await self.get(uri, params=params, return_ori_content=True)
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return self._page_extractor.extract_search_note_list(page_content)
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async def get_note_by_id(self, note_id: str) -> TiebaNote:
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"""
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根据帖子ID获取帖子详情
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Args:
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note_id:
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Returns:
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"""
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uri = f"/p/{note_id}"
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page_content = await self.get(uri, return_ori_content=True)
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return self._page_extractor.extract_note_detail(page_content)
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async def get_note_all_comments(self, note_detail: TiebaNote, crawl_interval: float = 1.0,
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callback: Optional[Callable] = None) -> List[TiebaComment]:
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"""
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获取指定帖子下的所有一级评论，该方法会一直查找一个帖子下的所有评论信息
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Args:
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note_detail: 帖子详情对象
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crawl_interval: 爬取一次笔记的延迟单位（秒）
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callback: 一次笔记爬取结束后
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Returns:
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"""
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uri = f"/p/{note_detail.note_id}"
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result: List[TiebaComment] = []
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current_page = 1
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while note_detail.total_replay_page >= current_page:
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params = {
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"pn": current_page
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}
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page_content = await self.get(uri, params=params, return_ori_content=True)
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comments = self._page_extractor.extract_tieba_note_parment_comments(page_content,
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note_id=note_detail.note_id)
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if not comments:
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break
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if callback:
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await callback(note_detail.note_id, comments)
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result.extend(comments)
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# 获取所有子评论
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await self.get_comments_all_sub_comments(comments, crawl_interval=crawl_interval, callback=callback)
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await asyncio.sleep(crawl_interval)
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current_page += 1
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return result
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async def get_comments_all_sub_comments(self, comments: List[TiebaComment], crawl_interval: float = 1.0,
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callback: Optional[Callable] = None) -> List[TiebaComment]:
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"""
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获取指定评论下的所有子评论
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Args:
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comments: 评论列表
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crawl_interval: 爬取一次笔记的延迟单位（秒）
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callback: 一次笔记爬取结束后
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Returns:
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"""
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uri = "/p/comment"
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if not config.ENABLE_GET_SUB_COMMENTS:
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return []
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# # 贴吧获取所有子评论需要登录态
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# if self.headers.get("Cookies") == "" or not self.pong():
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# raise Exception(f"[BaiduTieBaClient.pong] Cookies is empty, please login first...")
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all_sub_comments: List[TiebaComment] = []
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for comment in comments:
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if comment.sub_comment_count == 0:
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continue
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current_page = 1
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max_sub_page_num = comment.sub_comment_count // 10 + 1
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while max_sub_page_num >= current_page:
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params = {
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"tid": comment.note_id, # 帖子ID
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"pid": comment.comment_id, # 父级评论ID
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"fid": comment.tieba_id, # 贴吧ID
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"pn": current_page # 页码
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}
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page_content = await self.get(uri, params=params, return_ori_content=True)
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sub_comments = self._page_extractor.extract_tieba_note_sub_comments(page_content,
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parent_comment=comment)
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if not sub_comments:
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break
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if callback:
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await callback(comment.note_id, sub_comments)
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all_sub_comments.extend(sub_comments)
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await asyncio.sleep(crawl_interval)
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current_page += 1
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return all_sub_comments
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