312 lines
13 KiB
Python
312 lines
13 KiB
Python
# 声明：本代码仅供学习和研究目的使用。使用者应遵守以下原则：
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# 1. 不得用于任何商业用途。
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# 2. 使用时应遵守目标平台的使用条款和robots.txt规则。
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# 3. 不得进行大规模爬取或对平台造成运营干扰。
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# 4. 应合理控制请求频率，避免给目标平台带来不必要的负担。
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# 5. 不得用于任何非法或不当的用途。
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#
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# 详细许可条款请参阅项目根目录下的LICENSE文件。
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# 使用本代码即表示您同意遵守上述原则和LICENSE中的所有条款。
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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 model.m_baidu_tieba import TiebaCreator, TiebaNote
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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 tools.crawler_util import format_proxy_info
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from var import crawler_type_var, source_keyword_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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"""
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Start the crawler
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Returns:
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"""
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ip_proxy_pool, httpx_proxy_format = None, None
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if config.ENABLE_IP_PROXY:
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utils.logger.info("[BaiduTieBaCrawler.start] Begin create ip proxy pool ...")
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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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_, httpx_proxy_format = format_proxy_info(ip_proxy_info)
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utils.logger.info(f"[BaiduTieBaCrawler.start] Init default ip proxy, value: {httpx_proxy_format}")
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# Create a client to interact with the baidutieba website.
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self.tieba_client = BaiduTieBaClient(
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ip_pool=ip_proxy_pool,
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default_ip_proxy=httpx_proxy_format,
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)
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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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await self.get_specified_tieba_notes()
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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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elif config.CRAWLER_TYPE == "creator":
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# Get creator's information and their notes and comments
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await self.get_creators_and_notes()
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else:
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pass
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utils.logger.info("[BaiduTieBaCrawler.start] Tieba Crawler finished ...")
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async def search(self) -> None:
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"""
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Search for notes and retrieve their comment information.
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Returns:
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"""
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utils.logger.info("[BaiduTieBaCrawler.search] Begin search baidu tieba 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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source_keyword_var.set(keyword)
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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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notes_list: List[TiebaNote] = await self.tieba_client.get_notes_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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if not notes_list:
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utils.logger.info(f"[BaiduTieBaCrawler.search] Search note list is empty")
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break
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utils.logger.info(f"[BaiduTieBaCrawler.search] Note list len: {len(notes_list)}")
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await self.get_specified_notes(note_id_list=[note_detail.note_id for note_detail in notes_list])
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page += 1
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except Exception as ex:
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utils.logger.error(
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f"[BaiduTieBaCrawler.search] Search keywords error, current page: {page}, current keyword: {keyword}, err: {ex}")
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break
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async def get_specified_tieba_notes(self):
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"""
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Get the information and comments of the specified post by tieba name
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Returns:
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"""
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tieba_limit_count = 50
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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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for tieba_name in config.TIEBA_NAME_LIST:
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utils.logger.info(
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f"[BaiduTieBaCrawler.get_specified_tieba_notes] Begin get tieba name: {tieba_name}")
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page_number = 0
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while page_number <= config.CRAWLER_MAX_NOTES_COUNT:
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note_list: List[TiebaNote] = await self.tieba_client.get_notes_by_tieba_name(
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tieba_name=tieba_name,
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page_num=page_number
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)
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if not note_list:
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utils.logger.info(
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f"[BaiduTieBaCrawler.get_specified_tieba_notes] Get note list is empty")
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break
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utils.logger.info(
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f"[BaiduTieBaCrawler.get_specified_tieba_notes] tieba name: {tieba_name} note list len: {len(note_list)}")
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await self.get_specified_notes([note.note_id for note in note_list])
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page_number += tieba_limit_count
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async def get_specified_notes(self, note_id_list: List[str] = config.TIEBA_SPECIFIED_ID_LIST):
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"""
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Get the information and comments of the specified post
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Args:
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note_id_list:
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Returns:
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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_async_task(note_id=note_id, semaphore=semaphore) for note_id in note_id_list
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]
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note_details = await asyncio.gather(*task_list)
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note_details_model: List[TiebaNote] = []
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for note_detail in note_details:
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if note_detail is not None:
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note_details_model.append(note_detail)
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await tieba_store.update_tieba_note(note_detail)
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await self.batch_get_note_comments(note_details_model)
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async def get_note_detail_async_task(self, note_id: str, semaphore: asyncio.Semaphore) -> Optional[TiebaNote]:
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"""
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Get note detail
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Args:
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note_id: baidu tieba note id
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semaphore: asyncio semaphore
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Returns:
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"""
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async with semaphore:
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try:
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utils.logger.info(f"[BaiduTieBaCrawler.get_note_detail] Begin get note detail, note_id: {note_id}")
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note_detail: TiebaNote = 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_detail_list: List[TiebaNote]):
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"""
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Batch get note comments
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Args:
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note_detail_list:
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Returns:
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"""
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if not config.ENABLE_GET_COMMENTS:
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return
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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_detail in note_detail_list:
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task = asyncio.create_task(self.get_comments_async_task(note_detail, semaphore), name=note_detail.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_async_task(self, note_detail: TiebaNote, semaphore: asyncio.Semaphore):
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"""
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Get comments async task
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Args:
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note_detail:
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semaphore:
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Returns:
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"""
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async with semaphore:
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utils.logger.info(f"[BaiduTieBaCrawler.get_comments] Begin get note id comments {note_detail.note_id}")
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await self.tieba_client.get_note_all_comments(
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note_detail=note_detail,
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crawl_interval=random.random(),
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callback=tieba_store.batch_update_tieba_note_comments,
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max_count=config.CRAWLER_MAX_COMMENTS_COUNT_SINGLENOTES
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)
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async def get_creators_and_notes(self) -> None:
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"""
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Get creator's information and their notes and comments
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Returns:
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"""
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utils.logger.info("[WeiboCrawler.get_creators_and_notes] Begin get weibo creators")
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for creator_url in config.TIEBA_CREATOR_URL_LIST:
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creator_info: TiebaCreator = await self.tieba_client.get_creator_info_by_url(creator_url=creator_url)
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if creator_info:
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utils.logger.info(f"[WeiboCrawler.get_creators_and_notes] creator info: {creator_info}")
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if not creator_info:
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raise Exception("Get creator info error")
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await tieba_store.save_creator(user_info=creator_info)
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# Get all note information of the creator
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all_notes_list = await self.tieba_client.get_all_notes_by_creator_user_name(
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user_name=creator_info.user_name,
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crawl_interval=0,
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callback=tieba_store.batch_update_tieba_notes,
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max_note_count=config.CRAWLER_MAX_NOTES_COUNT
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)
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await self.batch_get_note_comments(all_notes_list)
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else:
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utils.logger.error(
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f"[WeiboCrawler.get_creators_and_notes] get creator info error, creator_url:{creator_url}")
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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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"""
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Launch browser and create browser
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Args:
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chromium:
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playwright_proxy:
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user_agent:
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headless:
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Returns:
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"""
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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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"""
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Close browser context
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Returns:
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"""
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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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