266 lines
12 KiB
Python
266 lines
12 KiB
Python
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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 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 tieba as tieba_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 BaiduTieBaClient
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from .field import SearchNoteType, SearchSortType
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from .login import BaiduTieBaLogin
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class TieBaCrawler(AbstractCrawler):
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context_page: Page
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tieba_client: BaiduTieBaClient
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browser_context: BrowserContext
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def __init__(self) -> None:
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self.index_url = "https://tieba.baidu.com"
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self.user_agent = utils.get_user_agent()
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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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# Create a client to interact with the baidutieba website.
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self.tieba_client = await self.create_tieba_client(httpx_proxy_format)
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if not await self.tieba_client.pong():
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login_obj = BaiduTieBaLogin(
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login_type=config.LOGIN_TYPE,
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login_phone="", # input 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.tieba_client.update_cookies(browser_context=self.browser_context)
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crawler_type_var.set(config.CRAWLER_TYPE)
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if config.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 config.CRAWLER_TYPE == "detail":
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# Get the information and comments of the specified post
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await self.get_specified_notes()
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else:
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pass
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utils.logger.info("[BaiduTieBaCrawler.start] Xhs Crawler finished ...")
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async def search(self) -> None:
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"""Search for notes and retrieve their comment information."""
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utils.logger.info("[BaiduTieBaCrawler.search] Begin search baidutieba keywords")
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tieba_limit_count = 10 # tieba limit page fixed value
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if config.CRAWLER_MAX_NOTES_COUNT < tieba_limit_count:
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config.CRAWLER_MAX_NOTES_COUNT = tieba_limit_count
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start_page = config.START_PAGE
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for keyword in config.KEYWORDS.split(","):
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utils.logger.info(f"[BaiduTieBaCrawler.search] Current search keyword: {keyword}")
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page = 1
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while (page - start_page + 1) * tieba_limit_count <= config.CRAWLER_MAX_NOTES_COUNT:
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if page < start_page:
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utils.logger.info(f"[BaiduTieBaCrawler.search] Skip page {page}")
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page += 1
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continue
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try:
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utils.logger.info(f"[BaiduTieBaCrawler.search] search tieba keyword: {keyword}, page: {page}")
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note_id_list: List[str] = []
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notes_res = await self.tieba_client.get_note_by_keyword(
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keyword=keyword,
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page=page,
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page_size=tieba_limit_count,
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sort=SearchSortType.TIME_DESC,
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note_type=SearchNoteType.FIXED_THREAD
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)
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utils.logger.info(f"[BaiduTieBaCrawler.search] Search notes res:{notes_res}")
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if not notes_res or not notes_res.get('has_more', False):
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utils.logger.info("No more content!")
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break
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semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
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task_list = [
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self.get_note_detail(
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note_id=post_item.get("id"),
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semaphore=semaphore
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)
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for post_item in notes_res.get("items", {})
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if post_item.get('model_type') not in ('rec_query', 'hot_query')
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]
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note_details = await asyncio.gather(*task_list)
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for note_detail in note_details:
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if note_detail:
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await tieba_store.update_tieba_note(note_detail)
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note_id_list.append(note_detail.get("note_id"))
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page += 1
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utils.logger.info(f"[BaiduTieBaCrawler.search] Note details: {note_details}")
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await self.batch_get_note_comments(note_id_list)
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except Exception as ex:
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utils.logger.error(f"[BaiduTieBaCrawler.search] Get note detail error, err: {ex}")
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break
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async def fetch_creator_notes_detail(self, note_list: List[Dict]):
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"""
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Concurrently obtain the specified post list and save the data
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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_note_detail(
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note_id=post_item.get("note_id"),
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semaphore=semaphore
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)
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for post_item in note_list
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]
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note_details = await asyncio.gather(*task_list)
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for note_detail in note_details:
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if note_detail:
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await tieba_store.update_tieba_note(note_detail)
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async def get_specified_notes(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_note_detail(note_id=note_id, semaphore=semaphore) for note_id in config.TIEBA_SPECIFIED_ID_LIST
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]
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note_details = await asyncio.gather(*task_list)
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for note_detail in note_details:
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if note_detail is not None:
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await tieba_store.update_tieba_note(note_detail)
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await self.batch_get_note_comments(config.TIEBA_SPECIFIED_ID_LIST)
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async def get_note_detail(self, note_id: str, semaphore: asyncio.Semaphore) -> Optional[Dict]:
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"""Get note detail"""
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async with semaphore:
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try:
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note_detail: Dict = await self.tieba_client.get_note_by_id(note_id)
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if not note_detail:
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utils.logger.error(
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f"[BaiduTieBaCrawler.get_note_detail] Get note detail error, note_id: {note_id}")
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return None
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return note_detail
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except Exception as ex:
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utils.logger.error(f"[BaiduTieBaCrawler.get_note_detail] Get note detail error: {ex}")
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return None
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except KeyError as ex:
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utils.logger.error(
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f"[BaiduTieBaCrawler.get_note_detail] have not fund note detail note_id:{note_id}, err: {ex}")
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return None
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async def batch_get_note_comments(self, note_list: List[str]):
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"""Batch get note comments"""
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if not config.ENABLE_GET_COMMENTS:
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utils.logger.info(f"[BaiduTieBaCrawler.batch_get_note_comments] Crawling comment mode is not enabled")
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return
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utils.logger.info(
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f"[BaiduTieBaCrawler.batch_get_note_comments] Begin batch get note comments, note list: {note_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 note_id in note_list:
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task = asyncio.create_task(self.get_comments(note_id, semaphore), name=note_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, note_id: str, semaphore: asyncio.Semaphore):
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"""Get note comments with keyword filtering and quantity limitation"""
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async with semaphore:
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utils.logger.info(f"[BaiduTieBaCrawler.get_comments] Begin get note id comments {note_id}")
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await self.tieba_client.get_note_all_comments(
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note_id=note_id,
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crawl_interval=random.random(),
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callback=tieba_store.batch_update_tieba_note_comments
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)
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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_tieba_client(self, httpx_proxy: Optional[str]) -> BaiduTieBaClient:
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"""Create tieba client"""
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utils.logger.info("[BaiduTieBaCrawler.create_tieba_client] Begin create baidutieba API client ...")
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cookie_str, cookie_dict = utils.convert_cookies(await self.browser_context.cookies())
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tieba_client_obj = BaiduTieBaClient(
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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.baidutieba.com",
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"Referer": "https://www.baidutieba.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 tieba_client_obj
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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("[BaiduTieBaCrawler.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 % config.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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async def close(self):
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"""Close browser context"""
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await self.browser_context.close()
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utils.logger.info("[BaiduTieBaCrawler.close] Browser context closed ...")
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