158 lines
6.0 KiB
Python
158 lines
6.0 KiB
Python
import sqlite3
|
|
import json
|
|
from http.server import HTTPServer, BaseHTTPRequestHandler
|
|
import urllib.parse
|
|
|
|
# --- 配置 ---
|
|
DATABASE_FILE = "workflows.sqlite"
|
|
PORT = 8000
|
|
|
|
|
|
# --- 数据库初始化 ---
|
|
def init_db():
|
|
"""初始化数据库，如果表不存在则创建它"""
|
|
with sqlite3.connect(DATABASE_FILE) as conn:
|
|
cursor = conn.cursor()
|
|
cursor.execute("""
|
|
CREATE TABLE IF NOT EXISTS workflows (
|
|
name TEXT PRIMARY KEY,
|
|
workflow_json TEXT NOT NULL
|
|
)
|
|
""")
|
|
conn.commit()
|
|
print(f"数据库 '{DATABASE_FILE}' 已准备就绪。")
|
|
|
|
|
|
# --- API 处理器 ---
|
|
class PersistentAPIHandler(BaseHTTPRequestHandler):
|
|
|
|
def _send_cors_headers(self):
|
|
"""发送CORS头部"""
|
|
self.send_header('Access-Control-Allow-Origin', '*')
|
|
self.send_header('Access-Control-Allow-Methods', 'GET, POST, DELETE, OPTIONS')
|
|
self.send_header("Access-Control-Allow-Headers", "X-Requested-With, Content-Type")
|
|
|
|
def do_OPTIONS(self):
|
|
"""处理预检请求"""
|
|
self.send_response(200, "ok")
|
|
self._send_cors_headers()
|
|
self.end_headers()
|
|
|
|
def do_GET(self):
|
|
"""处理获取所有工作流的请求"""
|
|
if self.path == '/api/workflow':
|
|
try:
|
|
with sqlite3.connect(DATABASE_FILE) as conn:
|
|
conn.row_factory = sqlite3.Row # 让查询结果可以像字典一样访问
|
|
cursor = conn.cursor()
|
|
cursor.execute("SELECT name, workflow_json FROM workflows")
|
|
rows = cursor.fetchall()
|
|
|
|
# 将数据库行转换为前端期望的JSON格式
|
|
workflows_list = [
|
|
{"name": row["name"], "workflow": json.loads(row["workflow_json"])}
|
|
for row in rows
|
|
]
|
|
|
|
self.send_response(200)
|
|
self.send_header('Content-type', 'application/json')
|
|
self._send_cors_headers()
|
|
self.end_headers()
|
|
self.wfile.write(json.dumps(workflows_list).encode())
|
|
|
|
except Exception as e:
|
|
self._send_error(f"获取工作流时出错: {e}")
|
|
else:
|
|
self._send_error("路径未找到", 404)
|
|
|
|
def do_POST(self):
|
|
"""处理发布/更新工作流的请求"""
|
|
if self.path == '/api/workflow':
|
|
try:
|
|
content_length = int(self.headers['Content-Length'])
|
|
post_data = self.rfile.read(content_length)
|
|
data = json.loads(post_data)
|
|
|
|
name = data.get('name')
|
|
workflow_data = data.get('workflow')
|
|
|
|
if not name or not workflow_data:
|
|
return self._send_error("请求体中缺少 'name' 或 'workflow'", 400)
|
|
|
|
workflow_json_str = json.dumps(workflow_data)
|
|
|
|
with sqlite3.connect(DATABASE_FILE) as conn:
|
|
cursor = conn.cursor()
|
|
# 使用 INSERT OR REPLACE 来处理创建和更新，非常方便
|
|
cursor.execute(
|
|
"INSERT OR REPLACE INTO workflows (name, workflow_json) VALUES (?, ?)",
|
|
(name, workflow_json_str)
|
|
)
|
|
conn.commit()
|
|
|
|
print(f"--- 已保存/更新工作流: {name} ---")
|
|
self.send_response(200)
|
|
self.send_header('Content-type', 'application/json')
|
|
self._send_cors_headers()
|
|
self.end_headers()
|
|
self.wfile.write(json.dumps({"status": "success", "name": name}).encode())
|
|
|
|
except Exception as e:
|
|
self._send_error(f"保存工作流时出错: {e}")
|
|
else:
|
|
self._send_error("路径未找到", 404)
|
|
|
|
def do_DELETE(self):
|
|
"""处理删除指定工作流的请求"""
|
|
parts = self.path.split('/api/workflow/')
|
|
if len(parts) == 2 and parts[1]:
|
|
workflow_name_to_delete = urllib.parse.unquote(parts[1])
|
|
try:
|
|
with sqlite3.connect(DATABASE_FILE) as conn:
|
|
cursor = conn.cursor()
|
|
cursor.execute("DELETE FROM workflows WHERE name = ?", (workflow_name_to_delete,))
|
|
conn.commit()
|
|
|
|
# 检查是否真的有行被删除了
|
|
if cursor.rowcount > 0:
|
|
print(f"--- 已删除工作流: {workflow_name_to_delete} ---")
|
|
self.send_response(200)
|
|
self.send_header('Content-type', 'application/json')
|
|
self._send_cors_headers()
|
|
self.end_headers()
|
|
self.wfile.write(json.dumps({"status": "deleted", "name": workflow_name_to_delete}).encode())
|
|
else:
|
|
self._send_error("工作流未找到，无法删除", 404)
|
|
|
|
except Exception as e:
|
|
self._send_error(f"删除工作流时出错: {e}")
|
|
else:
|
|
self._send_error("无效的删除路径", 400)
|
|
|
|
def _send_error(self, message, code=500):
|
|
self.send_response(code)
|
|
self.send_header('Content-type', 'application/json')
|
|
self._send_cors_headers()
|
|
self.end_headers()
|
|
self.wfile.write(json.dumps({"status": "error", "message": message}).encode())
|
|
|
|
|
|
# --- 主执行函数 ---
|
|
def run(server_class=HTTPServer, handler_class=PersistentAPIHandler, port=PORT):
|
|
# 1. 初始化数据库
|
|
init_db()
|
|
|
|
# 2. 启动服务器
|
|
server_address = ('', port)
|
|
httpd = server_class(server_address, handler_class)
|
|
print(f"\n持久化API服务器已在 http://localhost:{port} 上启动...")
|
|
print(f"数据库文件: ./{DATABASE_FILE}")
|
|
print(" - POST /api/workflow -> 发布/更新工作流")
|
|
print(" - GET /api/workflow -> 获取所有工作流")
|
|
print(" - DELETE /api/workflow/<name> -> 删除指定工作流")
|
|
print("\n按 Ctrl+C 停止服务器。")
|
|
httpd.serve_forever()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
run() |