# 声明：本代码仅供学习和研究目的使用。使用者应遵守以下原则： # 1. 不得用于任何商业用途。 # 2. 使用时应遵守目标平台的使用条款和robots.txt规则。 # 3. 不得进行大规模爬取或对平台造成运营干扰。 # 4. 应合理控制请求频率，避免给目标平台带来不必要的负担。 # 5. 不得用于任何非法或不当的用途。 # # 详细许可条款请参阅项目根目录下的LICENSE文件。 # 使用本代码即表示您同意遵守上述原则和LICENSE中的所有条款。 import asyncio import os import random from asyncio import Task from typing import Dict, List, Optional, Tuple from playwright.async_api import (BrowserContext, BrowserType, Page, async_playwright) import config from base.base_crawler import AbstractCrawler from model.m_baidu_tieba import TiebaCreator, TiebaNote from proxy.proxy_ip_pool import IpInfoModel, create_ip_pool from store import tieba as tieba_store from tools import utils from tools.crawler_util import format_proxy_info from var import crawler_type_var, source_keyword_var from .client import BaiduTieBaClient from .field import SearchNoteType, SearchSortType from .login import BaiduTieBaLogin class TieBaCrawler(AbstractCrawler): context_page: Page tieba_client: BaiduTieBaClient browser_context: BrowserContext def __init__(self) -> None: self.index_url = "https://tieba.baidu.com" self.user_agent = utils.get_user_agent() async def start(self) -> None: """ Start the crawler Returns: """ ip_proxy_pool, httpx_proxy_format = None, None if config.ENABLE_IP_PROXY: utils.logger.info("[BaiduTieBaCrawler.start] Begin create ip proxy pool ...") ip_proxy_pool = await create_ip_pool(config.IP_PROXY_POOL_COUNT, enable_validate_ip=True) ip_proxy_info: IpInfoModel = await ip_proxy_pool.get_proxy() _, httpx_proxy_format = format_proxy_info(ip_proxy_info) utils.logger.info(f"[BaiduTieBaCrawler.start] Init default ip proxy, value: {httpx_proxy_format}") # Create a client to interact with the baidutieba website. self.tieba_client = BaiduTieBaClient( ip_pool=ip_proxy_pool, default_ip_proxy=httpx_proxy_format, ) crawler_type_var.set(config.CRAWLER_TYPE) if config.CRAWLER_TYPE == "search": # Search for notes and retrieve their comment information. await self.search() await self.get_specified_tieba_notes() elif config.CRAWLER_TYPE == "detail": # Get the information and comments of the specified post await self.get_specified_notes() elif config.CRAWLER_TYPE == "creator": # Get creator's information and their notes and comments await self.get_creators_and_notes() else: pass utils.logger.info("[BaiduTieBaCrawler.start] Tieba Crawler finished ...") async def search(self) -> None: """ Search for notes and retrieve their comment information. Returns: """ utils.logger.info("[BaiduTieBaCrawler.search] Begin search baidu tieba keywords") tieba_limit_count = 10 # tieba limit page fixed value if config.CRAWLER_MAX_NOTES_COUNT < tieba_limit_count: config.CRAWLER_MAX_NOTES_COUNT = tieba_limit_count start_page = config.START_PAGE for keyword in config.KEYWORDS.split(","): source_keyword_var.set(keyword) utils.logger.info(f"[BaiduTieBaCrawler.search] Current search keyword: {keyword}") page = 1 while (page - start_page + 1) * tieba_limit_count <= config.CRAWLER_MAX_NOTES_COUNT: if page < start_page: utils.logger.info(f"[BaiduTieBaCrawler.search] Skip page {page}") page += 1 continue try: utils.logger.info(f"[BaiduTieBaCrawler.search] search tieba keyword: {keyword}, page: {page}") notes_list: List[TiebaNote] = await self.tieba_client.get_notes_by_keyword( keyword=keyword, page=page, page_size=tieba_limit_count, sort=SearchSortType.TIME_DESC, note_type=SearchNoteType.FIXED_THREAD ) if not notes_list: utils.logger.info(f"[BaiduTieBaCrawler.search] Search note list is empty") break utils.logger.info(f"[BaiduTieBaCrawler.search] Note list len: {len(notes_list)}") await self.get_specified_notes(note_id_list=[note_detail.note_id for note_detail in notes_list]) page += 1 except Exception as ex: utils.logger.error( f"[BaiduTieBaCrawler.search] Search keywords error, current page: {page}, current keyword: {keyword}, err: {ex}") break async def get_specified_tieba_notes(self): """ Get the information and comments of the specified post by tieba name Returns: """ tieba_limit_count = 50 if config.CRAWLER_MAX_NOTES_COUNT < tieba_limit_count: config.CRAWLER_MAX_NOTES_COUNT = tieba_limit_count for tieba_name in config.TIEBA_NAME_LIST: utils.logger.info( f"[BaiduTieBaCrawler.get_specified_tieba_notes] Begin get tieba name: {tieba_name}") page_number = 0 while page_number <= config.CRAWLER_MAX_NOTES_COUNT: note_list: List[TiebaNote] = await self.tieba_client.get_notes_by_tieba_name( tieba_name=tieba_name, page_num=page_number ) if not note_list: utils.logger.info( f"[BaiduTieBaCrawler.get_specified_tieba_notes] Get note list is empty") break utils.logger.info( f"[BaiduTieBaCrawler.get_specified_tieba_notes] tieba name: {tieba_name} note list len: {len(note_list)}") await self.get_specified_notes([note.note_id for note in note_list]) page_number += tieba_limit_count async def get_specified_notes(self, note_id_list: List[str] = config.TIEBA_SPECIFIED_ID_LIST): """ Get the information and comments of the specified post Args: note_id_list: Returns: """ semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) task_list = [ self.get_note_detail_async_task(note_id=note_id, semaphore=semaphore) for note_id in note_id_list ] note_details = await asyncio.gather(*task_list) note_details_model: List[TiebaNote] = [] for note_detail in note_details: if note_detail is not None: note_details_model.append(note_detail) await tieba_store.update_tieba_note(note_detail) await self.batch_get_note_comments(note_details_model) async def get_note_detail_async_task(self, note_id: str, semaphore: asyncio.Semaphore) -> Optional[TiebaNote]: """ Get note detail Args: note_id: baidu tieba note id semaphore: asyncio semaphore Returns: """ async with semaphore: try: utils.logger.info(f"[BaiduTieBaCrawler.get_note_detail] Begin get note detail, note_id: {note_id}") note_detail: TiebaNote = await self.tieba_client.get_note_by_id(note_id) if not note_detail: utils.logger.error( f"[BaiduTieBaCrawler.get_note_detail] Get note detail error, note_id: {note_id}") return None return note_detail except Exception as ex: utils.logger.error(f"[BaiduTieBaCrawler.get_note_detail] Get note detail error: {ex}") return None except KeyError as ex: utils.logger.error( f"[BaiduTieBaCrawler.get_note_detail] have not fund note detail note_id:{note_id}, err: {ex}") return None async def batch_get_note_comments(self, note_detail_list: List[TiebaNote]): """ Batch get note comments Args: note_detail_list: Returns: """ if not config.ENABLE_GET_COMMENTS: return semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) task_list: List[Task] = [] for note_detail in note_detail_list: task = asyncio.create_task(self.get_comments_async_task(note_detail, semaphore), name=note_detail.note_id) task_list.append(task) await asyncio.gather(*task_list) async def get_comments_async_task(self, note_detail: TiebaNote, semaphore: asyncio.Semaphore): """ Get comments async task Args: note_detail: semaphore: Returns: """ async with semaphore: utils.logger.info(f"[BaiduTieBaCrawler.get_comments] Begin get note id comments {note_detail.note_id}") await self.tieba_client.get_note_all_comments( note_detail=note_detail, crawl_interval=random.random(), callback=tieba_store.batch_update_tieba_note_comments, max_count=config.CRAWLER_MAX_COMMENTS_COUNT_SINGLENOTES ) async def get_creators_and_notes(self) -> None: """ Get creator's information and their notes and comments Returns: """ utils.logger.info("[WeiboCrawler.get_creators_and_notes] Begin get weibo creators") for creator_url in config.TIEBA_CREATOR_URL_LIST: creator_info: TiebaCreator = await self.tieba_client.get_creator_info_by_url(creator_url=creator_url) if creator_info: utils.logger.info(f"[WeiboCrawler.get_creators_and_notes] creator info: {creator_info}") if not creator_info: raise Exception("Get creator info error") await tieba_store.save_creator(user_info=creator_info) # Get all note information of the creator all_notes_list = await self.tieba_client.get_all_notes_by_creator_user_name( user_name=creator_info.user_name, crawl_interval=0, callback=tieba_store.batch_update_tieba_notes, max_note_count=config.CRAWLER_MAX_NOTES_COUNT ) await self.batch_get_note_comments(all_notes_list) else: utils.logger.error( f"[WeiboCrawler.get_creators_and_notes] get creator info error, creator_url:{creator_url}") async def launch_browser( self, chromium: BrowserType, playwright_proxy: Optional[Dict], user_agent: Optional[str], headless: bool = True ) -> BrowserContext: """ Launch browser and create browser Args: chromium: playwright_proxy: user_agent: headless: Returns: """ utils.logger.info("[BaiduTieBaCrawler.launch_browser] Begin create browser context ...") if config.SAVE_LOGIN_STATE: # feat issue #14 # we will save login state to avoid login every time user_data_dir = os.path.join(os.getcwd(), "browser_data", config.USER_DATA_DIR % config.PLATFORM) # type: ignore browser_context = await chromium.launch_persistent_context( user_data_dir=user_data_dir, accept_downloads=True, headless=headless, proxy=playwright_proxy, # type: ignore viewport={"width": 1920, "height": 1080}, user_agent=user_agent ) return browser_context else: browser = await chromium.launch(headless=headless, proxy=playwright_proxy) # type: ignore browser_context = await browser.new_context( viewport={"width": 1920, "height": 1080}, user_agent=user_agent ) return browser_context async def close(self): """ Close browser context Returns: """ await self.browser_context.close() utils.logger.info("[BaiduTieBaCrawler.close] Browser context closed ...")