import asyncio import os from asyncio import Task from typing import Any, Dict, List, Optional, Tuple from playwright.async_api import (BrowserContext, BrowserType, Page, async_playwright) import config from base.base_crawler import AbstractCrawler from models import douyin from proxy.proxy_ip_pool import IpInfoModel, create_ip_pool from tools import utils from var import crawler_type_var from .client import DOUYINClient from .exception import DataFetchError from .login import DouYinLogin class DouYinCrawler(AbstractCrawler): platform: str login_type: str crawler_type: str context_page: Page dy_client: DOUYINClient browser_context: BrowserContext def __init__(self) -> None: self.user_agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36" # fixed self.index_url = "https://www.douyin.com" def init_config(self, platform: str, login_type: str, crawler_type: str) -> None: self.platform = platform self.login_type = login_type self.crawler_type = crawler_type async def start(self) -> None: playwright_proxy_format, httpx_proxy_format = None, None if config.ENABLE_IP_PROXY: 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() playwright_proxy_format, httpx_proxy_format = self.format_proxy_info(ip_proxy_info) async with async_playwright() as playwright: # Launch a browser context. chromium = playwright.chromium self.browser_context = await self.launch_browser( chromium, None, self.user_agent, headless=config.HEADLESS ) # stealth.min.js is a js script to prevent the website from detecting the crawler. await self.browser_context.add_init_script(path="libs/stealth.min.js") self.context_page = await self.browser_context.new_page() await self.context_page.goto(self.index_url) self.dy_client = await self.create_douyin_client(httpx_proxy_format) if not await self.dy_client.pong(browser_context=self.browser_context): login_obj = DouYinLogin( login_type=self.login_type, login_phone="", # you phone number browser_context=self.browser_context, context_page=self.context_page, cookie_str=config.COOKIES ) await login_obj.begin() await self.dy_client.update_cookies(browser_context=self.browser_context) crawler_type_var.set(self.crawler_type) if self.crawler_type == "search": # Search for notes and retrieve their comment information. await self.search() elif self.crawler_type == "detail": # Get the information and comments of the specified post await self.get_specified_awemes() utils.logger.info("Douyin Crawler finished ...") async def search(self) -> None: utils.logger.info("Begin search douyin keywords") for keyword in config.KEYWORDS.split(","): utils.logger.info(f"Current keyword: {keyword}") aweme_list: List[str] = [] dy_limit_count = 10 page = 0 while (page + 1) * dy_limit_count <= config.CRAWLER_MAX_NOTES_COUNT: try: posts_res = await self.dy_client.search_info_by_keyword(keyword=keyword, offset=page * dy_limit_count) except DataFetchError: utils.logger.error(f"search douyin keyword: {keyword} failed") break page += 1 for post_item in posts_res.get("data"): try: aweme_info: Dict = post_item.get("aweme_info") or \ post_item.get("aweme_mix_info", {}).get("mix_items")[0] except TypeError: continue aweme_list.append(aweme_info.get("aweme_id", "")) await douyin.update_douyin_aweme(aweme_item=aweme_info) utils.logger.info(f"keyword:{keyword}, aweme_list:{aweme_list}") await self.batch_get_note_comments(aweme_list) async def get_specified_awemes(self): """Get the information and comments of the specified post""" semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) task_list = [ self.get_aweme_detail(aweme_id=aweme_id, semaphore=semaphore) for aweme_id in config.DY_SPECIFIED_ID_LIST ] aweme_details = await asyncio.gather(*task_list) for aweme_detail in aweme_details: if aweme_detail is not None: await douyin.update_douyin_aweme(aweme_detail) await self.batch_get_note_comments(config.DY_SPECIFIED_ID_LIST) async def get_aweme_detail(self, aweme_id: str, semaphore: asyncio.Semaphore) -> Any: """Get note detail""" async with semaphore: try: return await self.dy_client.get_video_by_id(aweme_id) except DataFetchError as ex: utils.logger.error(f"Get aweme detail error: {ex}") return None except KeyError as ex: utils.logger.error(f"have not fund note detail aweme_id:{aweme_id}, err: {ex}") return None async def batch_get_note_comments(self, aweme_list: List[str]) -> None: task_list: List[Task] = [] semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM) for aweme_id in aweme_list: task = asyncio.create_task( self.get_comments(aweme_id, semaphore, max_comments=config.MAX_COMMENTS_PER_POST), name=aweme_id) task_list.append(task) await asyncio.wait(task_list) async def get_comments(self, aweme_id: str, semaphore: asyncio.Semaphore, max_comments: int = None) -> None: async with semaphore: try: # 将关键词列表传递给 get_aweme_all_comments 方法 comments = await self.dy_client.get_aweme_all_comments( aweme_id=aweme_id, max_comments=max_comments, # 最大数量 keywords=config.COMMENT_KEYWORDS # 关键词列表 ) # 现在返回的 comments 已经是经过关键词筛选的 await douyin.batch_update_dy_aweme_comments(aweme_id, comments) utils.logger.info(f"aweme_id: {aweme_id} comments have all been obtained and filtered ...") except DataFetchError as e: utils.logger.error(f"aweme_id: {aweme_id} get comments failed, error: {e}") @staticmethod def format_proxy_info(ip_proxy_info: IpInfoModel) -> Tuple[Optional[Dict], Optional[Dict]]: """format proxy info for playwright and httpx""" playwright_proxy = { "server": f"{ip_proxy_info.protocol}{ip_proxy_info.ip}:{ip_proxy_info.port}", "username": ip_proxy_info.user, "password": ip_proxy_info.password, } httpx_proxy = { f"{ip_proxy_info.protocol}{ip_proxy_info.ip}": f"{ip_proxy_info.protocol}{ip_proxy_info.user}:{ip_proxy_info.password}@{ip_proxy_info.ip}:{ip_proxy_info.port}" } return playwright_proxy, httpx_proxy async def create_douyin_client(self, httpx_proxy: Optional[str]) -> DOUYINClient: """Create douyin client""" cookie_str, cookie_dict = utils.convert_cookies(await self.browser_context.cookies()) # type: ignore douyin_client = DOUYINClient( proxies=httpx_proxy, headers={ "User-Agent": self.user_agent, "Cookie": cookie_str, "Host": "www.douyin.com", "Origin": "https://www.douyin.com/", "Referer": "https://www.douyin.com/", "Content-Type": "application/json;charset=UTF-8" }, playwright_page=self.context_page, cookie_dict=cookie_dict, ) return douyin_client 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""" if config.SAVE_LOGIN_STATE: user_data_dir = os.path.join(os.getcwd(), "browser_data", config.USER_DATA_DIR % self.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 ) # type: ignore 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) -> None: """Close browser context""" await self.browser_context.close() utils.logger.info("Browser context closed ...")