225 lines
10 KiB
Python
225 lines
10 KiB
Python
import asyncio
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import os
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import random
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from asyncio import Task
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from typing import Any, Dict, List, Optional, Tuple
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from playwright.async_api import (BrowserContext, BrowserType, Page,
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async_playwright)
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import config
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from base.base_crawler import AbstractCrawler
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from proxy.proxy_ip_pool import IpInfoModel, create_ip_pool
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from store import douyin as douyin_store
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from tools import utils
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from var import crawler_type_var
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from .client import DOUYINClient
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from .exception import DataFetchError
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from .field import PublishTimeType
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from .login import DouYinLogin
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class DouYinCrawler(AbstractCrawler):
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platform: str
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login_type: str
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crawler_type: str
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context_page: Page
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dy_client: DOUYINClient
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browser_context: BrowserContext
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def __init__(self) -> None:
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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
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self.index_url = "https://www.douyin.com"
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def init_config(self, platform: str, login_type: str, crawler_type: str) -> None:
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self.platform = platform
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self.login_type = login_type
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self.crawler_type = crawler_type
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async def start(self) -> None:
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playwright_proxy_format, httpx_proxy_format = None, None
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if config.ENABLE_IP_PROXY:
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ip_proxy_pool = await create_ip_pool(config.IP_PROXY_POOL_COUNT, enable_validate_ip=True)
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ip_proxy_info: IpInfoModel = await ip_proxy_pool.get_proxy()
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playwright_proxy_format, httpx_proxy_format = self.format_proxy_info(ip_proxy_info)
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async with async_playwright() as playwright:
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# Launch a browser context.
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chromium = playwright.chromium
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self.browser_context = await self.launch_browser(
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chromium,
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None,
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self.user_agent,
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headless=config.HEADLESS
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)
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# stealth.min.js is a js script to prevent the website from detecting the crawler.
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await self.browser_context.add_init_script(path="libs/stealth.min.js")
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self.context_page = await self.browser_context.new_page()
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await self.context_page.goto(self.index_url)
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self.dy_client = await self.create_douyin_client(httpx_proxy_format)
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if not await self.dy_client.pong(browser_context=self.browser_context):
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login_obj = DouYinLogin(
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login_type=self.login_type,
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login_phone="", # you phone number
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browser_context=self.browser_context,
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context_page=self.context_page,
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cookie_str=config.COOKIES
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)
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await login_obj.begin()
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await self.dy_client.update_cookies(browser_context=self.browser_context)
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crawler_type_var.set(self.crawler_type)
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if self.crawler_type == "search":
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# Search for notes and retrieve their comment information.
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await self.search()
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elif self.crawler_type == "detail":
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# Get the information and comments of the specified post
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await self.get_specified_awemes()
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utils.logger.info("[DouYinCrawler.start] Douyin Crawler finished ...")
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async def search(self) -> None:
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utils.logger.info("[DouYinCrawler.search] Begin search douyin keywords")
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for keyword in config.KEYWORDS.split(","):
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utils.logger.info(f"[DouYinCrawler.search] Current keyword: {keyword}")
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aweme_list: List[str] = []
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dy_limit_count = 10
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page = 0
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while (page + 1) * dy_limit_count <= config.CRAWLER_MAX_NOTES_COUNT:
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try:
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posts_res = await self.dy_client.search_info_by_keyword(keyword=keyword,
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offset=page * dy_limit_count,
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publish_time=PublishTimeType.UNLIMITED
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)
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except DataFetchError:
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utils.logger.error(f"[DouYinCrawler.search] search douyin keyword: {keyword} failed")
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break
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page += 1
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for post_item in posts_res.get("data"):
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try:
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aweme_info: Dict = post_item.get("aweme_info") or \
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post_item.get("aweme_mix_info", {}).get("mix_items")[0]
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except TypeError:
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continue
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aweme_list.append(aweme_info.get("aweme_id", ""))
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await douyin_store.update_douyin_aweme(aweme_item=aweme_info)
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utils.logger.info(f"[DouYinCrawler.search] keyword:{keyword}, aweme_list:{aweme_list}")
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await self.batch_get_note_comments(aweme_list)
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async def get_specified_awemes(self):
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"""Get the information and comments of the specified post"""
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semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
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task_list = [
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self.get_aweme_detail(aweme_id=aweme_id, semaphore=semaphore) for aweme_id in config.DY_SPECIFIED_ID_LIST
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]
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aweme_details = await asyncio.gather(*task_list)
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for aweme_detail in aweme_details:
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if aweme_detail is not None:
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await douyin_store.update_douyin_aweme(aweme_detail)
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await self.batch_get_note_comments(config.DY_SPECIFIED_ID_LIST)
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async def get_aweme_detail(self, aweme_id: str, semaphore: asyncio.Semaphore) -> Any:
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"""Get note detail"""
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async with semaphore:
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try:
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return await self.dy_client.get_video_by_id(aweme_id)
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except DataFetchError as ex:
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utils.logger.error(f"[DouYinCrawler.get_aweme_detail] Get aweme detail error: {ex}")
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return None
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except KeyError as ex:
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utils.logger.error(f"[DouYinCrawler.get_aweme_detail] have not fund note detail aweme_id:{aweme_id}, err: {ex}")
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return None
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async def batch_get_note_comments(self, aweme_list: List[str]) -> None:
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if not config.ENABLE_GET_COMMENTS:
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utils.logger.info(f"[DouYinCrawler.batch_get_note_comments] Crawling comment mode is not enabled")
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return
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task_list: List[Task] = []
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semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
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for aweme_id in aweme_list:
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task = asyncio.create_task(
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self.get_comments(aweme_id, semaphore), name=aweme_id)
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task_list.append(task)
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if len(task_list) > 0 :
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await asyncio.wait(task_list)
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async def get_comments(self, aweme_id: str, semaphore: asyncio.Semaphore) -> None:
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async with semaphore:
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try:
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# 将关键词列表传递给 get_aweme_all_comments 方法
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await self.dy_client.get_aweme_all_comments(
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aweme_id=aweme_id,
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crawl_interval=random.random(),
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callback=douyin_store.batch_update_dy_aweme_comments
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)
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utils.logger.info(f"[DouYinCrawler.get_comments] aweme_id: {aweme_id} comments have all been obtained and filtered ...")
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except DataFetchError as e:
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utils.logger.error(f"[DouYinCrawler.get_comments] aweme_id: {aweme_id} get comments failed, error: {e}")
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@staticmethod
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def format_proxy_info(ip_proxy_info: IpInfoModel) -> Tuple[Optional[Dict], Optional[Dict]]:
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"""format proxy info for playwright and httpx"""
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playwright_proxy = {
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"server": f"{ip_proxy_info.protocol}{ip_proxy_info.ip}:{ip_proxy_info.port}",
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"username": ip_proxy_info.user,
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"password": ip_proxy_info.password,
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}
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httpx_proxy = {
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f"{ip_proxy_info.protocol}": f"http://{ip_proxy_info.user}:{ip_proxy_info.password}@{ip_proxy_info.ip}:{ip_proxy_info.port}"
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}
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return playwright_proxy, httpx_proxy
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async def create_douyin_client(self, httpx_proxy: Optional[str]) -> DOUYINClient:
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"""Create douyin client"""
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cookie_str, cookie_dict = utils.convert_cookies(await self.browser_context.cookies()) # type: ignore
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douyin_client = DOUYINClient(
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proxies=httpx_proxy,
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headers={
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"User-Agent": self.user_agent,
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"Cookie": cookie_str,
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"Host": "www.douyin.com",
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"Origin": "https://www.douyin.com/",
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"Referer": "https://www.douyin.com/",
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"Content-Type": "application/json;charset=UTF-8"
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},
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playwright_page=self.context_page,
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cookie_dict=cookie_dict,
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)
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return douyin_client
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async def launch_browser(
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self,
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chromium: BrowserType,
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playwright_proxy: Optional[Dict],
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user_agent: Optional[str],
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headless: bool = True
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) -> BrowserContext:
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"""Launch browser and create browser context"""
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if config.SAVE_LOGIN_STATE:
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user_data_dir = os.path.join(os.getcwd(), "browser_data",
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config.USER_DATA_DIR % self.platform) # type: ignore
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browser_context = await chromium.launch_persistent_context(
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user_data_dir=user_data_dir,
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accept_downloads=True,
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headless=headless,
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proxy=playwright_proxy, # type: ignore
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viewport={"width": 1920, "height": 1080},
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user_agent=user_agent
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) # type: ignore
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return browser_context
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else:
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browser = await chromium.launch(headless=headless, proxy=playwright_proxy) # type: ignore
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browser_context = await browser.new_context(
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viewport={"width": 1920, "height": 1080},
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user_agent=user_agent
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)
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return browser_context
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async def close(self) -> None:
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"""Close browser context"""
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await self.browser_context.close()
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utils.logger.info("[DouYinCrawler.close] Browser context closed ...")
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