110 lines
3.8 KiB
Python
110 lines
3.8 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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create.py - 动态生成PostgreSQL建表SQL语句
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"""
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import os
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import re
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# 1. 从环境变量获取表名，如果没有设置则使用默认值
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table_name = os.environ.get('TABLE_NAME', 'records')
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# 2. 定义SQL模板
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sql_template = f"""DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1
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FROM information_schema.tables
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WHERE table_schema = 'public'
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AND table_name = '{table_name}'
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) THEN
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CREATE TABLE {table_name} (
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id UUID DEFAULT gen_random_uuid() PRIMARY KEY, -- id
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payload JSONB NOT NULL, -- 数据
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deleted BOOLEAN NOT NULL DEFAULT FALSE, -- 删除状态
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created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP, -- 记录创建时间
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updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP -- 记录修改时间
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);
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-- 3 触发器：自动刷新 updated_at
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CREATE TRIGGER trg_{table_name}_at
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BEFORE UPDATE ON {table_name}
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FOR EACH ROW
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EXECUTE FUNCTION moddatetime(updated_at);
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RAISE NOTICE '{table_name} 表已创建';
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ELSE
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RAISE NOTICE '{table_name} 表已存在，跳过';
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END IF;
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END $$;"""
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def normalize_blank_lines(text):
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"""规范化空行：确保END $$;和DO $$之间只有一个空行"""
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# 将多个空行替换为单个空行
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text = re.sub(r'\n{3,}', '\n\n', text)
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# 确保END $$;后面有一个空行再接DO $$
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text = re.sub(r'END \$\$;(\s*)DO \$\$', r'END $$;\n\nDO $$', text)
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# 清理开头和结尾的多余空行
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text = text.strip() + '\n'
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return text
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def update_sql_file():
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"""将生成的SQL语句追加到03_create_table.sql文件中"""
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# 定义文件路径
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sql_file_path = os.path.join(
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os.path.dirname(os.path.dirname(__file__)),
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'infra',
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'postgres',
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'sql',
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'03_create_table.sql'
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)
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try:
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# 读取现有文件内容
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with open(sql_file_path, 'r', encoding='utf-8') as f:
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content = f.read()
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# 查找插入位置（在\"部署完成\"日志前）
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insert_pattern = r'(DO \$\$.*?RAISE NOTICE \'🚀============ 数据库表部署开始 ============🚀\'.*?END \$\$;)(.*?)(DO \$\$.*?RAISE NOTICE \'✅============ 数据库表部署完成 ============✅\'.*?END \$\$;)'
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match = re.search(insert_pattern, content, re.DOTALL)
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if match:
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# 分割内容
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before_insert = match.group(1)
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existing_middle = match.group(2)
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after_insert = match.group(3)
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# 规范化空行
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existing_middle = normalize_blank_lines(existing_middle)
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# 组合新内容
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new_content = f"""{before_insert}\n\n{sql_template}\n\n{existing_middle}\n{after_insert}"""
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# 规范化整个内容的空行
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new_content = normalize_blank_lines(new_content)
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# 写回文件
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with open(sql_file_path, 'w', encoding='utf-8') as f:
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f.write(new_content)
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print(f"✅ 成功更新 {sql_file_path}")
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print(f"📋 生成的表名: {table_name}")
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print(f"📝 SQL内容已追加到文件中")
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else:
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print("❌ 无法找到插入位置，请检查文件格式")
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except FileNotFoundError:
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print(f"❌ 文件 {sql_file_path} 不存在")
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except Exception as e:
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print(f"❌ 处理文件时出错: {e}")
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if __name__ == "__main__":
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print(f"🚀 开始生成表 '{table_name}' 的SQL语句...")
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update_sql_file() |