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 proxy.proxy_ip_pool import IpInfoModel, create_ip_pool, ProxyIpPool 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 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() elif config.CRAWLER_TYPE == "detail": # Get the information and comments of the specified post await self.get_specified_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 baidutieba 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(","): 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}") note_id_list: List[str] = [] notes_list_res = 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 ) utils.logger.info(f"[BaiduTieBaCrawler.search] Search notes res:{notes_list_res}") if not notes_list_res: break for note_detail in notes_list_res: if note_detail: await tieba_store.update_tieba_note(note_detail) note_id_list.append(note_detail.get("note_id")) page += 1 utils.logger.info(f"[BaiduTieBaCrawler.search] Note details: {notes_list_res}") await self.batch_get_note_comments(note_id_list) except Exception as ex: utils.logger.error(f"[BaiduTieBaCrawler.search] Search note list error, err: {ex}") break async def fetch_creator_notes_detail(self, note_list: List[Dict]): """ Concurrently obtain the specified post list and save the data """ semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) task_list = [ self.get_note_detail( note_id=post_item.get("note_id"), semaphore=semaphore ) for post_item in note_list ] note_details = await asyncio.gather(*task_list) for note_detail in note_details: if note_detail: await tieba_store.update_tieba_note(note_detail) async def get_specified_notes(self): """Get the information and comments of the specified post""" semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) task_list = [ self.get_note_detail(note_id=note_id, semaphore=semaphore) for note_id in config.TIEBA_SPECIFIED_ID_LIST ] note_details = await asyncio.gather(*task_list) for note_detail in note_details: if note_detail is not None: await tieba_store.update_tieba_note(note_detail) await self.batch_get_note_comments(config.TIEBA_SPECIFIED_ID_LIST) async def get_note_detail(self, note_id: str, semaphore: asyncio.Semaphore) -> Optional[Dict]: """Get note detail""" async with semaphore: try: note_detail: Dict = 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_list: List[str]): """Batch get note comments""" if not config.ENABLE_GET_COMMENTS: utils.logger.info(f"[BaiduTieBaCrawler.batch_get_note_comments] Crawling comment mode is not enabled") return utils.logger.info( f"[BaiduTieBaCrawler.batch_get_note_comments] Begin batch get note comments, note list: {note_list}") semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) task_list: List[Task] = [] for note_id in note_list: task = asyncio.create_task(self.get_comments(note_id, semaphore), name=note_id) task_list.append(task) await asyncio.gather(*task_list) async def get_comments(self, note_id: str, semaphore: asyncio.Semaphore): """Get note comments with keyword filtering and quantity limitation""" async with semaphore: utils.logger.info(f"[BaiduTieBaCrawler.get_comments] Begin get note id comments {note_id}") await self.tieba_client.get_note_all_comments( note_id=note_id, crawl_interval=random.random(), callback=tieba_store.batch_update_tieba_note_comments ) async def create_tieba_client(self, ip_pool: ProxyIpPool) -> BaiduTieBaClient: """ Create tieba client Args: ip_pool: Returns: """ """Create tieba client""" utils.logger.info("[BaiduTieBaCrawler.create_tieba_client] Begin create baidutieba API client ...") cookie_str, cookie_dict = utils.convert_cookies(await self.browser_context.cookies()) tieba_client_obj = BaiduTieBaClient( ip_pool=ip_pool, ) return tieba_client_obj async def launch_browser( self, chromium: BrowserType, playwright_proxy: Optional[Dict], user_agent: Optional[str], headless: bool = True ) -> BrowserContext: """Launch browser and create browser context""" 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""" await self.browser_context.close() utils.logger.info("[BaiduTieBaCrawler.close] Browser context closed ...")