try2love
299 lines
12 KiB
Python
299 lines
12 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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MindSpider AI爬虫项目 - 数据库管理工具
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提供数据库状态查看、数据统计、清理等功能
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"""
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import os
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import sys
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from sqlalchemy import create_engine, text, inspect
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from sqlalchemy.engine import Engine
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import argparse
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from pathlib import Path
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from datetime import datetime, timedelta
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from loguru import logger
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from urllib.parse import quote_plus
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# 添加项目根目录到路径
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project_root = Path(__file__).parent.parent
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sys.path.append(str(project_root))
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try:
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import config
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except ImportError:
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logger.error("错误: 无法导入config.py配置文件")
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sys.exit(1)
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from config import settings
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class DatabaseManager:
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def __init__(self):
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self.engine: Engine = None
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self.connect()
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def connect(self):
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"""连接数据库"""
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try:
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dialect = (settings.DB_DIALECT or "mysql").lower()
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if dialect in ("postgresql", "postgres"):
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url = f"postgresql+psycopg://{settings.DB_USER}:{quote_plus(settings.DB_PASSWORD)}@{settings.DB_HOST}:{settings.DB_PORT}/{settings.DB_NAME}"
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else:
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url = f"mysql+pymysql://{settings.DB_USER}:{quote_plus(settings.DB_PASSWORD)}@{settings.DB_HOST}:{settings.DB_PORT}/{settings.DB_NAME}?charset={settings.DB_CHARSET}"
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self.engine = create_engine(url, future=True)
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logger.info(f"成功连接到数据库: {settings.DB_NAME}")
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except Exception as e:
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logger.error(f"数据库连接失败: {e}")
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sys.exit(1)
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def close(self):
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"""关闭数据库连接"""
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if self.engine:
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self.engine.dispose()
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def show_tables(self):
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"""显示所有表"""
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data_list_message = ""
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data_list_message += "\n" + "=" * 60
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data_list_message += "数据库表列表"
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data_list_message += "=" * 60
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logger.info(data_list_message)
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inspector = inspect(self.engine)
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tables = inspector.get_table_names()
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if not tables:
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logger.info("数据库中没有表")
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return
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# 分类显示表
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mindspider_tables = []
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mediacrawler_tables = []
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for table_name in tables:
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if table_name in ['daily_news', 'daily_topics', 'topic_news_relation', 'crawling_tasks']:
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mindspider_tables.append(table_name)
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else:
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mediacrawler_tables.append(table_name)
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data_list_message += "MindSpider核心表:"
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data_list_message += "\n"
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for table in mindspider_tables:
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with self.engine.connect() as conn:
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count = conn.execute(text(f"SELECT COUNT(*) FROM {table}")).scalar_one()
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data_list_message += f" - {table:<25} ({count:>6} 条记录)"
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data_list_message += "\n"
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data_list_message += "\nMediaCrawler平台表:"
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data_list_message += "\n"
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for table in mediacrawler_tables:
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try:
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with self.engine.connect() as conn:
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count = conn.execute(text(f"SELECT COUNT(*) FROM {table}")).scalar_one()
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data_list_message += f" - {table:<25} ({count:>6} 条记录)"
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data_list_message += "\n"
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except:
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data_list_message += f" - {table:<25} (查询失败)"
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data_list_message += "\n"
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logger.info(data_list_message)
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def show_statistics(self):
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"""显示数据统计"""
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data_statistics_message = ""
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data_statistics_message += "\n" + "=" * 60
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data_statistics_message += "数据统计"
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data_statistics_message += "=" * 60
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data_statistics_message += "\n"
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try:
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# 新闻统计
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with self.engine.connect() as conn:
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news_count = conn.execute(text("SELECT COUNT(*) FROM daily_news")).scalar_one()
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news_days = conn.execute(text("SELECT COUNT(DISTINCT crawl_date) FROM daily_news")).scalar_one()
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platforms = conn.execute(text("SELECT COUNT(DISTINCT source_platform) FROM daily_news")).scalar_one()
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data_statistics_message += "新闻数据:"
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data_statistics_message += "\n"
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data_statistics_message += f" - 总新闻数: {news_count}"
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data_statistics_message += "\n"
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data_statistics_message += f" - 覆盖天数: {news_days}"
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data_statistics_message += "\n"
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data_statistics_message += f" - 新闻平台: {platforms}"
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data_statistics_message += "\n"
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# 话题统计
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with self.engine.connect() as conn:
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topic_count = conn.execute(text("SELECT COUNT(*) FROM daily_topics")).scalar_one()
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topic_days = conn.execute(text("SELECT COUNT(DISTINCT extract_date) FROM daily_topics")).scalar_one()
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data_statistics_message += "话题数据:"
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data_statistics_message += "\n"
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data_statistics_message += f" - 总话题数: {topic_count}"
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data_statistics_message += "\n"
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data_statistics_message += f" - 提取天数: {topic_days}"
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data_statistics_message += "\n"
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# 爬取任务统计
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with self.engine.connect() as conn:
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task_count = conn.execute(text("SELECT COUNT(*) FROM crawling_tasks")).scalar_one()
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task_status = conn.execute(text("SELECT task_status, COUNT(*) FROM crawling_tasks GROUP BY task_status")).all()
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data_statistics_message += "爬取任务:"
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data_statistics_message += "\n"
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data_statistics_message += f" - 总任务数: {task_count}"
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data_statistics_message += "\n"
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for status, count in task_status:
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data_statistics_message += f" - {status}: {count}"
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data_statistics_message += "\n"
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# 爬取内容统计
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data_statistics_message += "平台内容统计:"
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data_statistics_message += "\n"
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platform_tables = {
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'xhs_note': '小红书',
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'douyin_aweme': '抖音',
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'kuaishou_video': '快手',
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'bilibili_video': 'B站',
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'weibo_note': '微博',
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'tieba_note': '贴吧',
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'zhihu_content': '知乎'
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}
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for table, platform in platform_tables.items():
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try:
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with self.engine.connect() as conn:
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count = conn.execute(text(f"SELECT COUNT(*) FROM {table}")).scalar_one()
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data_statistics_message += f" - {platform}: {count}"
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data_statistics_message += "\n"
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except:
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data_statistics_message += f" - {platform}: 表不存在"
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data_statistics_message += "\n"
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logger.info(data_statistics_message)
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except Exception as e:
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data_statistics_message += f"统计查询失败: {e}"
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data_statistics_message += "\n"
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logger.error(data_statistics_message)
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def show_recent_data(self, days=7):
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"""显示最近几天的数据"""
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data_recent_message = ""
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data_recent_message += "\n" + "=" * 60
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data_recent_message += "最近" + str(days) + "天的数据"
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data_recent_message += "=" * 60
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from datetime import date, timedelta
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start_date = date.today() - timedelta(days=days)
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# 最近的新闻
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with self.engine.connect() as conn:
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news_data = conn.execute(
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text(
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"""
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SELECT crawl_date, COUNT(*) as news_count, COUNT(DISTINCT source_platform) as platforms
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FROM daily_news
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WHERE crawl_date >= :start_date
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GROUP BY crawl_date
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ORDER BY crawl_date DESC
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"""
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),
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{"start_date": start_date},
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).all()
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if news_data:
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data_recent_message += "每日新闻统计:"
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data_recent_message += "\n"
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for date, count, platforms in news_data:
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data_recent_message += f" {date}: {count} 条新闻, {platforms} 个平台"
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data_recent_message += "\n"
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# 最近的话题
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with self.engine.connect() as conn:
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topic_data = conn.execute(
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text(
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"""
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SELECT extract_date, COUNT(*) as topic_count
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FROM daily_topics
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WHERE extract_date >= :start_date
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GROUP BY extract_date
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ORDER BY extract_date DESC
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"""
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),
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{"start_date": start_date},
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).all()
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if topic_data:
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data_recent_message += "每日话题统计:"
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data_recent_message += "\n"
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for date, count in topic_data:
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data_recent_message += f" {date}: {count} 个话题"
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data_recent_message += "\n"
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logger.info(data_recent_message)
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def cleanup_old_data(self, days=90, dry_run=True):
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"""清理旧数据"""
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cleanup_message = ""
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cleanup_message += "\n" + "=" * 60
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cleanup_message += f"清理{days}天前的数据 ({'预览模式' if dry_run else '执行模式'})"
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cleanup_message += "=" * 60
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cutoff_date = datetime.now() - timedelta(days=days)
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# 检查要删除的数据
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cleanup_queries = [
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("daily_news", f"SELECT COUNT(*) FROM daily_news WHERE crawl_date < '{cutoff_date.date()}'"),
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("daily_topics", f"SELECT COUNT(*) FROM daily_topics WHERE extract_date < '{cutoff_date.date()}'"),
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("crawling_tasks", f"SELECT COUNT(*) FROM crawling_tasks WHERE scheduled_date < '{cutoff_date.date()}'")
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]
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with self.engine.begin() as conn:
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for table, query in cleanup_queries:
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count = conn.execute(text(query)).scalar_one()
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if count > 0:
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cleanup_message += f" {table}: {count} 条记录将被删除"
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cleanup_message += "\n"
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if not dry_run:
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delete_query = query.replace("SELECT COUNT(*)", "DELETE")
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conn.execute(text(delete_query))
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cleanup_message += f" 已删除 {count} 条记录"
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cleanup_message += "\n"
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else:
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cleanup_message += f" {table}: 无需清理"
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cleanup_message += "\n"
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if dry_run:
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cleanup_message += "\n这是预览模式，没有实际删除数据。使用 --execute 参数执行实际清理。"
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cleanup_message += "\n"
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logger.info(cleanup_message)
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def main():
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parser = argparse.ArgumentParser(description="MindSpider数据库管理工具")
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parser.add_argument("--tables", action="store_true", help="显示所有表")
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parser.add_argument("--stats", action="store_true", help="显示数据统计")
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parser.add_argument("--recent", type=int, default=7, help="显示最近N天的数据 (默认7天)")
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parser.add_argument("--cleanup", type=int, help="清理N天前的数据")
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parser.add_argument("--execute", action="store_true", help="执行实际清理操作")
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args = parser.parse_args()
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# 如果没有参数，显示所有信息
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if not any([args.tables, args.stats, args.recent != 7, args.cleanup]):
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args.tables = True
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args.stats = True
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db_manager = DatabaseManager()
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try:
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if args.tables:
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db_manager.show_tables()
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if args.stats:
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db_manager.show_statistics()
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if args.recent != 7 or not any([args.tables, args.stats, args.cleanup]):
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db_manager.show_recent_data(args.recent)
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if args.cleanup:
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db_manager.cleanup_old_data(args.cleanup, dry_run=not args.execute)
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finally:
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db_manager.close()
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if __name__ == "__main__":
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main()
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