257 lines
8.3 KiB
Python
257 lines
8.3 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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# -*- coding: utf-8 -*-
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import asyncio
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import csv
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import json
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import os
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import pathlib
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from typing import Dict
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import aiofiles
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import config
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from base.base_crawler import AbstractStore
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from tools import utils, words
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from var import crawler_type_var
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def calculate_number_of_files(file_store_path: str) -> int:
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"""计算数据保存文件的前部分排序数字，支持每次运行代码不写到同一个文件中
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Args:
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file_store_path;
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Returns:
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file nums
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"""
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if not os.path.exists(file_store_path):
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return 1
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try:
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return max([int(file_name.split("_")[0]) for file_name in os.listdir(file_store_path)]) + 1
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except ValueError:
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return 1
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class ZhihuCsvStoreImplement(AbstractStore):
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csv_store_path: str = "data/zhihu"
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file_count: int = calculate_number_of_files(csv_store_path)
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def make_save_file_name(self, store_type: str) -> str:
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"""
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make save file name by store type
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Args:
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store_type: contents or comments
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Returns: eg: data/zhihu/search_comments_20240114.csv ...
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"""
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return f"{self.csv_store_path}/{self.file_count}_{crawler_type_var.get()}_{store_type}_{utils.get_current_date()}.csv"
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async def save_data_to_csv(self, save_item: Dict, store_type: str):
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"""
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Below is a simple way to save it in CSV format.
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Args:
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save_item: save content dict info
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store_type: Save type contains content and comments（contents | comments）
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Returns: no returns
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"""
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pathlib.Path(self.csv_store_path).mkdir(parents=True, exist_ok=True)
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save_file_name = self.make_save_file_name(store_type=store_type)
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async with aiofiles.open(save_file_name, mode='a+', encoding="utf-8-sig", newline="") as f:
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f.fileno()
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writer = csv.writer(f)
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if await f.tell() == 0:
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await writer.writerow(save_item.keys())
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await writer.writerow(save_item.values())
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async def store_content(self, content_item: Dict):
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"""
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Zhihu content CSV storage implementation
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Args:
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content_item: note item dict
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Returns:
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"""
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await self.save_data_to_csv(save_item=content_item, store_type="contents")
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async def store_comment(self, comment_item: Dict):
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"""
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Zhihu comment CSV storage implementation
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Args:
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comment_item: comment item dict
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Returns:
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"""
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await self.save_data_to_csv(save_item=comment_item, store_type="comments")
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async def store_creator(self, creator: Dict):
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"""
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Zhihu content CSV storage implementation
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Args:
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creator: creator dict
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Returns:
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"""
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await self.save_data_to_csv(save_item=creator, store_type="creator")
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class ZhihuDbStoreImplement(AbstractStore):
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async def store_content(self, content_item: Dict):
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"""
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Zhihu content DB storage implementation
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Args:
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content_item: content item dict
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Returns:
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"""
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from .zhihu_store_sql import (add_new_content,
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query_content_by_content_id,
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update_content_by_content_id)
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note_id = content_item.get("note_id")
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note_detail: Dict = await query_content_by_content_id(content_id=note_id)
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if not note_detail:
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content_item["add_ts"] = utils.get_current_timestamp()
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await add_new_content(content_item)
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else:
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await update_content_by_content_id(note_id, content_item=content_item)
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async def store_comment(self, comment_item: Dict):
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"""
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Zhihu content DB storage implementation
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Args:
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comment_item: comment item dict
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Returns:
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"""
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from .zhihu_store_sql import (add_new_comment,
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query_comment_by_comment_id,
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update_comment_by_comment_id)
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comment_id = comment_item.get("comment_id")
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comment_detail: Dict = await query_comment_by_comment_id(comment_id=comment_id)
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if not comment_detail:
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comment_item["add_ts"] = utils.get_current_timestamp()
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await add_new_comment(comment_item)
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else:
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await update_comment_by_comment_id(comment_id, comment_item=comment_item)
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async def store_creator(self, creator: Dict):
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"""
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Zhihu content DB storage implementation
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Args:
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creator: creator dict
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Returns:
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"""
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from .zhihu_store_sql import (add_new_creator,
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query_creator_by_user_id,
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update_creator_by_user_id)
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user_id = creator.get("user_id")
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user_detail: Dict = await query_creator_by_user_id(user_id)
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if not user_detail:
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creator["add_ts"] = utils.get_current_timestamp()
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await add_new_creator(creator)
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else:
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await update_creator_by_user_id(user_id, creator)
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class ZhihuJsonStoreImplement(AbstractStore):
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json_store_path: str = "data/zhihu/json"
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words_store_path: str = "data/zhihu/words"
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lock = asyncio.Lock()
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file_count: int = calculate_number_of_files(json_store_path)
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WordCloud = words.AsyncWordCloudGenerator()
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def make_save_file_name(self, store_type: str) -> (str, str):
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"""
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make save file name by store type
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Args:
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store_type: Save type contains content and comments（contents | comments）
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Returns:
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"""
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return (
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f"{self.json_store_path}/{crawler_type_var.get()}_{store_type}_{utils.get_current_date()}.json",
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f"{self.words_store_path}/{crawler_type_var.get()}_{store_type}_{utils.get_current_date()}"
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)
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async def save_data_to_json(self, save_item: Dict, store_type: str):
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"""
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Below is a simple way to save it in json format.
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Args:
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save_item: save content dict info
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store_type: Save type contains content and comments（contents | comments）
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Returns:
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"""
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pathlib.Path(self.json_store_path).mkdir(parents=True, exist_ok=True)
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pathlib.Path(self.words_store_path).mkdir(parents=True, exist_ok=True)
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save_file_name, words_file_name_prefix = self.make_save_file_name(store_type=store_type)
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save_data = []
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async with self.lock:
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if os.path.exists(save_file_name):
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async with aiofiles.open(save_file_name, 'r', encoding='utf-8') as file:
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save_data = json.loads(await file.read())
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save_data.append(save_item)
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async with aiofiles.open(save_file_name, 'w', encoding='utf-8') as file:
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await file.write(json.dumps(save_data, ensure_ascii=False, indent=4))
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if config.ENABLE_GET_COMMENTS and config.ENABLE_GET_WORDCLOUD:
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try:
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await self.WordCloud.generate_word_frequency_and_cloud(save_data, words_file_name_prefix)
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except:
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pass
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async def store_content(self, content_item: Dict):
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"""
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content JSON storage implementation
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Args:
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content_item:
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Returns:
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"""
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await self.save_data_to_json(content_item, "contents")
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async def store_comment(self, comment_item: Dict):
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"""
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comment JSON storage implementatio
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Args:
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comment_item:
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Returns:
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"""
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await self.save_data_to_json(comment_item, "comments")
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async def store_creator(self, creator: Dict):
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"""
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Zhihu content JSON storage implementation
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Args:
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creator: creator dict
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Returns:
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"""
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await self.save_data_to_json(creator, "creator")
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