282 lines
12 KiB
Python
282 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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# @Author : relakkes@gmail.com
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# @Time : 2023/12/2 18:44
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# @Desc : B站爬虫
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import asyncio
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import os
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import random
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import time
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from asyncio import Task
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from typing import Dict, List, Optional, Tuple, Union
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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 models import bilibili
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from proxy.proxy_ip_pool import IpInfoModel, create_ip_pool
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from tools import utils
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from var import comment_tasks_var, crawler_type_var
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from .client import BilibiliClient
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from .exception import DataFetchError
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from .field import SearchOrderType
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from .login import BilibiliLogin
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class BilibiliCrawler(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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bili_client: BilibiliClient
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browser_context: BrowserContext
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def __init__(self):
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self.index_url = "https://www.bilibili.com"
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self.user_agent = utils.get_user_agent()
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def init_config(self, platform: str, login_type: str, crawler_type: str):
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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):
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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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# Create a client to interact with the xiaohongshu website.
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self.bili_client = await self.create_bilibili_client(httpx_proxy_format)
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if not await self.bili_client.pong():
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login_obj = BilibiliLogin(
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login_type=self.login_type,
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login_phone="", # your 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.bili_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 video 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_videos()
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else:
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pass
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utils.logger.info("[BilibiliCrawler.start] Bilibili Crawler finished ...")
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async def search(self):
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"""
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search bilibili video with keywords
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:return:
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"""
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utils.logger.info("[BilibiliCrawler.search] Begin search bilibli keywords")
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bili_limit_count = 20 # bilibili limit page fixed value
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for keyword in config.KEYWORDS.split(","):
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utils.logger.info(f"[BilibiliCrawler.search] Current search keyword: {keyword}")
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page = 1
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while page * bili_limit_count <= config.CRAWLER_MAX_NOTES_COUNT:
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video_id_list: List[str] = []
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videos_res = await self.bili_client.search_video_by_keyword(
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keyword=keyword,
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page=page,
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page_size=bili_limit_count,
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order=SearchOrderType.DEFAULT,
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)
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video_list: List[Dict] = videos_res.get("result")
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semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
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task_list = [
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self.get_video_info_task(aid=video_item.get("aid"), bvid="", semaphore=semaphore)
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for video_item in video_list
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]
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video_items = await asyncio.gather(*task_list)
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for video_item in video_items:
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if video_item:
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video_id_list.append(video_item.get("View").get("aid"))
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await bilibili.update_bilibili_video(video_item)
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page += 1
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await self.batch_get_video_comments(video_id_list)
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async def batch_get_video_comments(self, video_id_list: List[str]):
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"""
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batch get video comments
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:param video_id_list:
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:return:
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"""
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utils.logger.info(f"[BilibiliCrawler.batch_get_video_comments] video ids:{video_id_list}")
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semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
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task_list: List[Task] = []
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for video_id in video_id_list:
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task = asyncio.create_task(self.get_comments(video_id, semaphore), name=video_id)
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task_list.append(task)
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await asyncio.gather(*task_list)
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async def get_comments(self, video_id: str, semaphore: asyncio.Semaphore):
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"""
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get comment for video id
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:param video_id:
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:param semaphore:
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:return:
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"""
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async with semaphore:
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try:
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utils.logger.info(f"[BilibiliCrawler.get_comments] begin get video_id: {video_id} comments ...")
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# Read keyword and quantity from config
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keywords = config.COMMENT_KEYWORDS
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max_comments = config.MAX_COMMENTS_PER_POST
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# Download comments
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all_comments = await self.bili_client.get_video_all_comments(
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video_id=video_id,
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crawl_interval=random.random(),
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)
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# Filter comments by keyword
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if keywords:
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filtered_comments = [
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comment for comment in all_comments if
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any(keyword in comment["content"]["message"] for keyword in keywords)
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]
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else:
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filtered_comments = all_comments
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# Limit the number of comments
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if max_comments > 0:
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filtered_comments = filtered_comments[:max_comments]
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# Update bilibili video comments
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await bilibili.batch_update_bilibili_video_comments(video_id, filtered_comments)
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except DataFetchError as ex:
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utils.logger.error(f"[BilibiliCrawler.get_comments] get video_id: {video_id} comment error: {ex}")
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except Exception as e:
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utils.logger.error(f"[BilibiliCrawler.get_comments] may be been blocked, err:{e}")
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async def get_specified_videos(self):
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"""
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get specified videos info
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:return:
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"""
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semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
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task_list = [
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self.get_video_info_task(aid=0, bvid=video_id, semaphore=semaphore) for video_id in
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config.BILI_SPECIFIED_ID_LIST
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]
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video_details = await asyncio.gather(*task_list)
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video_aids_list = []
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for video_detail in video_details:
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if video_detail is not None:
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video_item_view: Dict = video_detail.get("View")
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video_aid: str = video_item_view.get("aid")
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if video_aid:
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video_aids_list.append(video_aid)
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await bilibili.update_bilibili_video(video_detail)
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await self.batch_get_video_comments(video_aids_list)
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async def get_video_info_task(self, aid: int, bvid: str, semaphore: asyncio.Semaphore) -> Optional[Dict]:
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"""
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Get video detail task
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:param aid:
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:param bvid:
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:param semaphore:
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:return:
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"""
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async with semaphore:
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try:
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result = await self.bili_client.get_video_info(aid=aid, bvid=bvid)
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return result
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except DataFetchError as ex:
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utils.logger.error(f"[BilibiliCrawler.get_video_info_task] Get video 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"[BilibiliCrawler.get_video_info_task] have not fund note detail video_id:{bvid}, err: {ex}")
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return None
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async def create_bilibili_client(self, httpx_proxy: Optional[str]) -> BilibiliClient:
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"""Create xhs client"""
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utils.logger.info("[BilibiliCrawler.create_bilibili_client] Begin create bilibili API client ...")
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cookie_str, cookie_dict = utils.convert_cookies(await self.browser_context.cookies())
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bilibili_client_obj = BilibiliClient(
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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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"Origin": "https://www.bilibili.com",
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"Referer": "https://www.bilibili.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 bilibili_client_obj
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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}{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}"
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}
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return playwright_proxy, httpx_proxy
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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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utils.logger.info("[BilibiliCrawler.launch_browser] Begin create browser context ...")
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if config.SAVE_LOGIN_STATE:
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# feat issue #14
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# we will save login state to avoid login every time
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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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)
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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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