[BUG]Further fix the at_eof problem caused by aiomysql (#9)

* fix at_eof bug

* update uv.lock

doris_mcp_server/utils/db.py

@@ -210,7 +210,8 @@ class DorisConnectionManager:
             if not self.config.database.password:
                 self.logger.warning("Database password is empty, this may cause connection issues")
             
-            # Create connection pool with additional parameters for stability
+            # Create connection pool with improved stability parameters
+            # Key change: Set minsize=0 to avoid pre-creation issues that cause at_eof errors
             self.pool = await aiomysql.create_pool(
                 host=self.config.database.host,
                 port=self.config.database.port,
@@ -218,22 +219,22 @@ class DorisConnectionManager:
                 password=self.config.database.password,
                 db=self.config.database.database,
                 charset="utf8",
-                minsize=self.config.database.min_connections or 5,
+                minsize=0,  # Avoid pre-creation issues - create connections on demand
                 maxsize=self.config.database.max_connections or 20,
                 autocommit=True,
                 connect_timeout=self.connection_timeout,
-                # Additional parameters for stability
+                # Enhanced stability parameters
-                pool_recycle=3600,  # Recycle connections every hour
+                pool_recycle=7200,  # Recycle connections every 2 hours
                 echo=False,  # Don't echo SQL statements
             )
 
-            # Test the connection pool
+            # Test the connection pool with a more robust test
-            if not await self.test_connection():
+            if not await self._robust_connection_test():
-                raise RuntimeError("Connection pool test failed")
+                raise RuntimeError("Connection pool robust test failed")
 
             self.logger.info(
-                f"Connection pool initialized successfully, min connections: {self.config.database.min_connections}, "
+                f"Connection pool initialized successfully with on-demand connection creation, "
-                f"max connections: {self.config.database.max_connections}"
+                f"max connections: {self.config.database.max_connections or 20}"
             )
 
             # Start background monitoring tasks
@@ -252,63 +253,178 @@ class DorisConnectionManager:
                 self.pool = None
             raise
 
+    async def _robust_connection_test(self) -> bool:
+        """Perform a robust connection test that validates full connection health"""
+        max_retries = 3
+        for attempt in range(max_retries):
+            try:
+                self.logger.debug(f"Testing connection pool (attempt {attempt + 1}/{max_retries})")
+                
+                # Test connection creation and validation
+                test_conn = await self._create_raw_connection_with_validation()
+                if test_conn:
+                    # Test basic query execution
+                    async with test_conn.cursor() as cursor:
+                        await cursor.execute("SELECT 1")
+                        result = await cursor.fetchone()
+                        if result and result[0] == 1:
+                            self.logger.debug("Connection pool test successful")
+                            # Return connection to pool
+                            if self.pool:
+                                self.pool.release(test_conn)
+                            return True
+                        else:
+                            self.logger.warning("Connection test query returned unexpected result")
+                    
+                    # Close test connection if we get here
+                    await test_conn.ensure_closed()
+                
+            except Exception as e:
+                self.logger.warning(f"Connection test attempt {attempt + 1} failed: {e}")
+                if attempt == max_retries - 1:
+                    self.logger.error("All connection test attempts failed")
+                    return False
+                else:
+                    # Wait before retry
+                    await asyncio.sleep(1.0 * (attempt + 1))
+        
+        return False
+
+    async def _create_raw_connection_with_validation(self, max_retries: int = 3):
+        """Create a raw connection with comprehensive validation"""
+        for attempt in range(max_retries):
+            try:
+                if not self.pool:
+                    raise RuntimeError("Connection pool not initialized")
+
+                # Acquire connection from pool
+                raw_connection = await self.pool.acquire()
+                
+                # Basic connection validation
+                if not raw_connection:
+                    self.logger.warning(f"Pool returned None connection (attempt {attempt + 1})")
+                    continue
+                
+                if raw_connection.closed:
+                    self.logger.warning(f"Pool returned closed connection (attempt {attempt + 1})")
+                    continue
+                
+                # Perform a simple ping test instead of checking internal state
+                # Internal state (_reader, _transport) might not be fully initialized yet
+                try:
+                    # Test basic connectivity with a simple query
+                    async with raw_connection.cursor() as cursor:
+                        await cursor.execute("SELECT 1")
+                        result = await cursor.fetchone()
+                        if result and result[0] == 1:
+                            self.logger.debug(f"Successfully created and validated raw connection (attempt {attempt + 1})")
+                            return raw_connection
+                        else:
+                            self.logger.warning(f"Connection test query failed (attempt {attempt + 1})")
+                            await raw_connection.ensure_closed()
+                            continue
+                            
+                except Exception as e:
+                    # Check if this is an at_eof error specifically
+                    error_str = str(e).lower()
+                    if 'at_eof' in error_str or 'nonetype' in error_str:
+                        self.logger.warning(f"Connection has at_eof issue (attempt {attempt + 1}): {e}")
+                    else:
+                        self.logger.warning(f"Connection test failed (attempt {attempt + 1}): {e}")
+                    
+                    try:
+                        await raw_connection.ensure_closed()
+                    except Exception:
+                        pass
+                    continue
+                
+            except Exception as e:
+                self.logger.warning(f"Raw connection creation attempt {attempt + 1} failed: {e}")
+                if attempt == max_retries - 1:
+                    raise RuntimeError(f"Failed to create valid connection after {max_retries} attempts: {e}")
+                else:
+                    # Exponential backoff
+                    await asyncio.sleep(0.5 * (2 ** attempt))
+        
+        raise RuntimeError("Failed to create valid connection")
+
     async def get_connection(self, session_id: str) -> DorisConnection:
-        """Get database connection
+        """Get database connection with enhanced reliability
 
         Supports session-level connection reuse to improve performance and consistency
         """
         # Check if there's an existing session connection
         if session_id in self.session_connections:
             conn = self.session_connections[session_id]
-            # Check connection health
+            # Enhanced connection health check
-            if await conn.ping():
+            if await self._comprehensive_connection_health_check(conn):
                 return conn
             else:
                 # Connection is unhealthy, clean up and create new one
+                self.logger.debug(f"Existing connection unhealthy for session {session_id}, creating new one")
                 await self._cleanup_session_connection(session_id)
 
-        # Create new connection
+        # Create new connection with retry logic
-        return await self._create_new_connection(session_id)
+        return await self._create_new_connection_with_retry(session_id)
 
-    async def _create_new_connection(self, session_id: str) -> DorisConnection:
+    async def _comprehensive_connection_health_check(self, conn: DorisConnection) -> bool:
-        """Create new database connection"""
+        """Perform comprehensive connection health check"""
         try:
-            if not self.pool:
+            # Check basic connection state
-                raise RuntimeError("Connection pool not initialized")
+            if not conn.connection or conn.connection.closed:
-
+                return False
-            # Get connection from pool
-            raw_connection = await self.pool.acquire()
             
-            # Validate the raw connection
+            # Instead of checking internal state, perform a simple ping test
-            if not raw_connection:
+            # This is more reliable and less dependent on aiomysql internals
-                raise RuntimeError(f"Failed to acquire connection from pool for session {session_id}")
+            if not await conn.ping():
+                return False
             
-            # Verify the connection is not closed
+            return True
-            if raw_connection.closed:
-                raise RuntimeError(f"Acquired connection is already closed for session {session_id}")
             
-            # Create wrapped connection
-            doris_conn = DorisConnection(raw_connection, session_id, self.security_manager)
-            
-            # Test the connection before storing it
-            if not await doris_conn.ping():
-                # If ping fails, release the connection and raise error
-                if self.pool and raw_connection and not raw_connection.closed:
-                    self.pool.release(raw_connection)
-                raise RuntimeError(f"New connection failed ping test for session {session_id}")
-            
-            # Store in session connections
-            self.session_connections[session_id] = doris_conn
-            
-            self.metrics.total_connections += 1
-            self.logger.debug(f"Created new connection for session: {session_id}")
-            
-            return doris_conn
-
         except Exception as e:
-            self.metrics.connection_errors += 1
+            # Check for at_eof errors specifically
-            self.logger.error(f"Failed to create connection for session {session_id}: {e}")
+            error_str = str(e).lower()
-            raise
+            if 'at_eof' in error_str:
+                self.logger.debug(f"Connection health check failed with at_eof error: {e}")
+            else:
+                self.logger.debug(f"Connection health check failed: {e}")
+            return False
+
+    async def _create_new_connection_with_retry(self, session_id: str, max_retries: int = 3) -> DorisConnection:
+        """Create new database connection with retry logic"""
+        for attempt in range(max_retries):
+            try:
+                # Get validated raw connection
+                raw_connection = await self._create_raw_connection_with_validation()
+                
+                # Create wrapped connection
+                doris_conn = DorisConnection(raw_connection, session_id, self.security_manager)
+                
+                # Comprehensive connection test
+                if await self._comprehensive_connection_health_check(doris_conn):
+                    # Store in session connections
+                    self.session_connections[session_id] = doris_conn
+                    self.metrics.total_connections += 1
+                    self.logger.debug(f"Successfully created new connection for session: {session_id}")
+                    return doris_conn
+                else:
+                    # Connection failed health check, clean up and retry
+                    self.logger.warning(f"New connection failed health check for session {session_id} (attempt {attempt + 1})")
+                    try:
+                        await doris_conn.close()
+                    except Exception:
+                        pass
+                    
+            except Exception as e:
+                self.logger.warning(f"Connection creation attempt {attempt + 1} failed for session {session_id}: {e}")
+                if attempt == max_retries - 1:
+                    self.metrics.connection_errors += 1
+                    raise RuntimeError(f"Failed to create connection for session {session_id} after {max_retries} attempts: {e}")
+                else:
+                    # Exponential backoff
+                    await asyncio.sleep(0.5 * (2 ** attempt))
+        
+        raise RuntimeError(f"Unexpected failure in connection creation for session {session_id}")
 
     async def release_connection(self, session_id: str):
         """Release session connection"""
@@ -316,26 +432,47 @@ class DorisConnectionManager:
             await self._cleanup_session_connection(session_id)
 
     async def _cleanup_session_connection(self, session_id: str):
-        """Clean up session connection"""
+        """Clean up session connection with enhanced safety"""
         if session_id in self.session_connections:
             conn = self.session_connections[session_id]
             try:
-                # Return connection to pool only if it's valid and not closed
+                # Simplified connection validation before returning to pool
+                connection_healthy = False
+                
                 if (self.pool and 
                     conn.connection and 
-                    not conn.connection.closed and
+                    not conn.connection.closed):
-                    hasattr(conn.connection, '_reader') and 
+                    
-                    conn.connection._reader is not None):
+                    # Test if connection is still healthy with a simple check
+                    try:
+                        # Quick ping test to see if connection is usable
+                        async with conn.connection.cursor() as cursor:
+                            await cursor.execute("SELECT 1")
+                            await cursor.fetchone()
+                        connection_healthy = True
+                    except Exception as test_error:
+                        self.logger.debug(f"Connection health test failed for session {session_id}: {test_error}")
+                        connection_healthy = False
+                
+                if connection_healthy:
+                    # Connection appears healthy, return to pool
                     try:
-                        # Try to gracefully return to pool
                         self.pool.release(conn.connection)
+                        self.logger.debug(f"Successfully returned connection to pool for session {session_id}")
                     except Exception as pool_error:
                         self.logger.debug(f"Failed to return connection to pool for session {session_id}: {pool_error}")
-                        # If pool release fails, try to close the connection directly
                         try:
                             await conn.connection.ensure_closed()
                         except Exception:
-                            pass  # Ignore errors during forced close
+                            pass
+                else:
+                    # Connection is unhealthy, force close
+                    self.logger.debug(f"Connection unhealthy for session {session_id}, force closing")
+                    try:
+                        if conn.connection and not conn.connection.closed:
+                            await conn.connection.ensure_closed()
+                    except Exception:
+                        pass
                 
                 # Close connection wrapper
                 await conn.close()
@@ -365,24 +502,24 @@ class DorisConnectionManager:
                 self.logger.error(f"Health check error: {e}")
 
     async def _perform_health_check(self):
-        """Perform health check"""
+        """Perform enhanced health check"""
         try:
             unhealthy_sessions = []
             
-            # First pass: check basic connectivity
+            # Enhanced health check with comprehensive validation
             for session_id, conn in self.session_connections.items():
-                if not await conn.ping():
+                if not await self._comprehensive_connection_health_check(conn):
                     unhealthy_sessions.append(session_id)
             
-            # Second pass: check for stale connections (over 30 minutes old)
+            # Check for stale connections (over 30 minutes old)
             current_time = datetime.utcnow()
             stale_sessions = []
             for session_id, conn in self.session_connections.items():
                 if session_id not in unhealthy_sessions:  # Don't double-check
                     last_used_delta = (current_time - conn.last_used).total_seconds()
                     if last_used_delta > 1800:  # 30 minutes
-                        # Force a ping check for stale connections
+                        # Force a comprehensive health check for stale connections
-                        if not await conn.ping():
+                        if not await self._comprehensive_connection_health_check(conn):
                             stale_sessions.append(session_id)
             
             all_problematic_sessions = list(set(unhealthy_sessions + stale_sessions))
@@ -453,9 +590,29 @@ class DorisConnectionManager:
     async def execute_query(
         self, session_id: str, sql: str, params: tuple | None = None, auth_context=None
     ) -> QueryResult:
-        """Execute query"""
+        """Execute query with enhanced error handling and retry logic"""
-        conn = await self.get_connection(session_id)
+        max_retries = 2
-        return await conn.execute(sql, params, auth_context)
+        for attempt in range(max_retries):
+            try:
+                conn = await self.get_connection(session_id)
+                return await conn.execute(sql, params, auth_context)
+            except Exception as e:
+                error_msg = str(e).lower()
+                # Check for connection-related errors that warrant retry
+                is_connection_error = any(keyword in error_msg for keyword in [
+                    'at_eof', 'connection', 'closed', 'nonetype', 'reader', 'transport'
+                ])
+                
+                if is_connection_error and attempt < max_retries - 1:
+                    self.logger.warning(f"Connection error during query execution (attempt {attempt + 1}): {e}")
+                    # Clean up the problematic connection
+                    await self.release_connection(session_id)
+                    # Wait before retry
+                    await asyncio.sleep(0.5 * (attempt + 1))
+                    continue
+                else:
+                    # Not a connection error or final retry - re-raise
+                    raise
 
     @asynccontextmanager
     async def get_connection_context(self, session_id: str):
@@ -500,20 +657,8 @@ class DorisConnectionManager:
             self.logger.error(f"Error closing connection manager: {e}")
 
     async def test_connection(self) -> bool:
-        """Test database connection"""
+        """Test database connection using robust connection test"""
-        try:
+        return await self._robust_connection_test()
-            if not self.pool:
-                return False
-
-            async with self.pool.acquire() as conn:
-                async with conn.cursor() as cursor:
-                    await cursor.execute("SELECT 1")
-                    result = await cursor.fetchone()
-                    return result is not None
-
-        except Exception as e:
-            self.logger.error(f"Connection test failed: {e}")
-            return False
 
     async def diagnose_connection_health(self) -> Dict[str, Any]:
         """Diagnose connection pool and session health"""
@@ -680,3 +825,5 @@ class ConnectionPoolMonitor:
             report["recommendations"].append("Connection pool utilization is high, consider increasing pool size")
         
         return report
+
+

uv.lock

@@ -518,6 +518,170 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/8f/d7/9322c609343d929e75e7e5e6255e614fcc67572cfd083959cdef3b7aad79/docutils-0.21.2-py3-none-any.whl", hash = "sha256:dafca5b9e384f0e419294eb4d2ff9fa826435bf15f15b7bd45723e8ad76811b2", size = 587408 },
 ]
 
+[[package]]
+name = "doris-mcp-server"
+version = "0.4.2"
+source = { editable = "." }
+dependencies = [
+    { name = "aiofiles" },
+    { name = "aiohttp" },
+    { name = "aiomysql" },
+    { name = "aioredis" },
+    { name = "asyncio-mqtt" },
+    { name = "bcrypt" },
+    { name = "click" },
+    { name = "cryptography" },
+    { name = "fastapi" },
+    { name = "httpx" },
+    { name = "mcp" },
+    { name = "numpy" },
+    { name = "orjson" },
+    { name = "pandas" },
+    { name = "passlib", extra = ["bcrypt"] },
+    { name = "prometheus-client" },
+    { name = "pydantic" },
+    { name = "pydantic-settings" },
+    { name = "pyjwt" },
+    { name = "pymysql" },
+    { name = "pytest" },
+    { name = "pytest-asyncio" },
+    { name = "pytest-cov" },
+    { name = "python-dateutil" },
+    { name = "python-dotenv" },
+    { name = "python-jose", extra = ["cryptography"] },
+    { name = "python-multipart" },
+    { name = "pyyaml" },
+    { name = "requests" },
+    { name = "rich" },
+    { name = "sqlparse" },
+    { name = "starlette" },
+    { name = "structlog" },
+    { name = "toml" },
+    { name = "tqdm" },
+    { name = "typer" },
+    { name = "uvicorn", extra = ["standard"] },
+    { name = "websockets" },
+]
+
+[package.optional-dependencies]
+dev = [
+    { name = "bandit" },
+    { name = "black" },
+    { name = "flake8" },
+    { name = "isort" },
+    { name = "mypy" },
+    { name = "myst-parser" },
+    { name = "pre-commit" },
+    { name = "pytest" },
+    { name = "pytest-asyncio" },
+    { name = "pytest-cov" },
+    { name = "pytest-mock" },
+    { name = "pytest-xdist" },
+    { name = "ruff" },
+    { name = "safety" },
+    { name = "sphinx" },
+    { name = "sphinx-rtd-theme" },
+    { name = "tox" },
+]
+docs = [
+    { name = "myst-parser" },
+    { name = "sphinx" },
+    { name = "sphinx-autoapi" },
+    { name = "sphinx-rtd-theme" },
+]
+monitoring = [
+    { name = "grafana-client" },
+    { name = "jaeger-client" },
+    { name = "opentelemetry-api" },
+    { name = "opentelemetry-sdk" },
+    { name = "prometheus-client" },
+]
+performance = [
+    { name = "cchardet" },
+    { name = "orjson" },
+    { name = "uvloop" },
+]
+
+[package.dev-dependencies]
+dev = [
+    { name = "ruff" },
+]
+
+[package.metadata]
+requires-dist = [
+    { name = "aiofiles", specifier = ">=23.0.0" },
+    { name = "aiohttp", specifier = ">=3.9.0" },
+    { name = "aiomysql", specifier = ">=0.2.0" },
+    { name = "aioredis", specifier = ">=2.0.0" },
+    { name = "asyncio-mqtt", specifier = ">=0.16.0" },
+    { name = "bandit", marker = "extra == 'dev'", specifier = ">=1.7.0" },
+    { name = "bcrypt", specifier = ">=4.1.0" },
+    { name = "black", marker = "extra == 'dev'", specifier = ">=23.12.0" },
+    { name = "cchardet", marker = "extra == 'performance'", specifier = ">=2.1.0" },
+    { name = "click", specifier = ">=8.1.0" },
+    { name = "cryptography", specifier = ">=41.0.0" },
+    { name = "fastapi", specifier = ">=0.108.0" },
+    { name = "flake8", marker = "extra == 'dev'", specifier = ">=7.0.0" },
+    { name = "grafana-client", marker = "extra == 'monitoring'", specifier = ">=3.5.0" },
+    { name = "httpx", specifier = ">=0.26.0" },
+    { name = "isort", marker = "extra == 'dev'", specifier = ">=5.13.0" },
+    { name = "jaeger-client", marker = "extra == 'monitoring'", specifier = ">=4.8.0" },
+    { name = "mcp", specifier = ">=1.8.0,<2.0.0" },
+    { name = "mypy", marker = "extra == 'dev'", specifier = ">=1.8.0" },
+    { name = "myst-parser", marker = "extra == 'dev'", specifier = ">=2.0.0" },
+    { name = "myst-parser", marker = "extra == 'docs'", specifier = ">=2.0.0" },
+    { name = "numpy", specifier = ">=1.24.0" },
+    { name = "opentelemetry-api", marker = "extra == 'monitoring'", specifier = ">=1.21.0" },
+    { name = "opentelemetry-sdk", marker = "extra == 'monitoring'", specifier = ">=1.21.0" },
+    { name = "orjson", specifier = ">=3.9.0" },
+    { name = "orjson", marker = "extra == 'performance'", specifier = ">=3.9.0" },
+    { name = "pandas", specifier = ">=2.0.0" },
+    { name = "passlib", extras = ["bcrypt"], specifier = ">=1.7.0" },
+    { name = "pre-commit", marker = "extra == 'dev'", specifier = ">=3.6.0" },
+    { name = "prometheus-client", specifier = ">=0.19.0" },
+    { name = "prometheus-client", marker = "extra == 'monitoring'", specifier = ">=0.19.0" },
+    { name = "pydantic", specifier = ">=2.5.0" },
+    { name = "pydantic-settings", specifier = ">=2.1.0" },
+    { name = "pyjwt", specifier = ">=2.8.0" },
+    { name = "pymysql", specifier = ">=1.1.0" },
+    { name = "pytest", specifier = ">=8.4.0" },
+    { name = "pytest", marker = "extra == 'dev'", specifier = ">=7.4.0" },
+    { name = "pytest-asyncio", specifier = ">=1.0.0" },
+    { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = ">=0.23.0" },
+    { name = "pytest-cov", specifier = ">=6.1.1" },
+    { name = "pytest-cov", marker = "extra == 'dev'", specifier = ">=4.1.0" },
+    { name = "pytest-mock", marker = "extra == 'dev'", specifier = ">=3.12.0" },
+    { name = "pytest-xdist", marker = "extra == 'dev'", specifier = ">=3.5.0" },
+    { name = "python-dateutil", specifier = ">=2.8.0" },
+    { name = "python-dotenv", specifier = ">=1.0.0" },
+    { name = "python-jose", extras = ["cryptography"], specifier = ">=3.3.0" },
+    { name = "python-multipart", specifier = ">=0.0.6" },
+    { name = "pyyaml", specifier = ">=6.0.0" },
+    { name = "requests", specifier = ">=2.31.0" },
+    { name = "rich", specifier = ">=13.7.0" },
+    { name = "ruff", marker = "extra == 'dev'", specifier = ">=0.1.0" },
+    { name = "safety", marker = "extra == 'dev'", specifier = ">=2.3.0" },
+    { name = "sphinx", marker = "extra == 'dev'", specifier = ">=7.2.0" },
+    { name = "sphinx", marker = "extra == 'docs'", specifier = ">=7.2.0" },
+    { name = "sphinx-autoapi", marker = "extra == 'docs'", specifier = ">=3.0.0" },
+    { name = "sphinx-rtd-theme", marker = "extra == 'dev'", specifier = ">=2.0.0" },
+    { name = "sphinx-rtd-theme", marker = "extra == 'docs'", specifier = ">=2.0.0" },
+    { name = "sqlparse", specifier = ">=0.4.4" },
+    { name = "starlette", specifier = ">=0.27.0" },
+    { name = "structlog", specifier = ">=23.2.0" },
+    { name = "toml", specifier = ">=0.10.0" },
+    { name = "tox", marker = "extra == 'dev'", specifier = ">=4.11.0" },
+    { name = "tqdm", specifier = ">=4.66.0" },
+    { name = "typer", specifier = ">=0.9.0" },
+    { name = "uvicorn", extras = ["standard"], specifier = ">=0.25.0" },
+    { name = "uvloop", marker = "extra == 'performance'", specifier = ">=0.19.0" },
+    { name = "websockets", specifier = ">=12.0" },
+]
+provides-extras = ["dev", "docs", "performance", "monitoring"]
+
+[package.metadata.requires-dev]
+dev = [{ name = "ruff", specifier = ">=0.11.13" }]
+
 [[package]]
 name = "dparse"
 version = "0.6.4"
@@ -946,170 +1110,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/79/45/823ad05504bea55cb0feb7470387f151252127ad5c72f8882e8fe6cf5c0e/mcp-1.9.3-py3-none-any.whl", hash = "sha256:69b0136d1ac9927402ed4cf221d4b8ff875e7132b0b06edd446448766f34f9b9", size = 131063 },
 ]
 
-[[package]]
-name = "mcp-doris-server"
-version = "0.4.2"
-source = { editable = "." }
-dependencies = [
-    { name = "aiofiles" },
-    { name = "aiohttp" },
-    { name = "aiomysql" },
-    { name = "aioredis" },
-    { name = "asyncio-mqtt" },
-    { name = "bcrypt" },
-    { name = "click" },
-    { name = "cryptography" },
-    { name = "fastapi" },
-    { name = "httpx" },
-    { name = "mcp" },
-    { name = "numpy" },
-    { name = "orjson" },
-    { name = "pandas" },
-    { name = "passlib", extra = ["bcrypt"] },
-    { name = "prometheus-client" },
-    { name = "pydantic" },
-    { name = "pydantic-settings" },
-    { name = "pyjwt" },
-    { name = "pymysql" },
-    { name = "pytest" },
-    { name = "pytest-asyncio" },
-    { name = "pytest-cov" },
-    { name = "python-dateutil" },
-    { name = "python-dotenv" },
-    { name = "python-jose", extra = ["cryptography"] },
-    { name = "python-multipart" },
-    { name = "pyyaml" },
-    { name = "requests" },
-    { name = "rich" },
-    { name = "sqlparse" },
-    { name = "starlette" },
-    { name = "structlog" },
-    { name = "toml" },
-    { name = "tqdm" },
-    { name = "typer" },
-    { name = "uvicorn", extra = ["standard"] },
-    { name = "websockets" },
-]
-
-[package.optional-dependencies]
-dev = [
-    { name = "bandit" },
-    { name = "black" },
-    { name = "flake8" },
-    { name = "isort" },
-    { name = "mypy" },
-    { name = "myst-parser" },
-    { name = "pre-commit" },
-    { name = "pytest" },
-    { name = "pytest-asyncio" },
-    { name = "pytest-cov" },
-    { name = "pytest-mock" },
-    { name = "pytest-xdist" },
-    { name = "ruff" },
-    { name = "safety" },
-    { name = "sphinx" },
-    { name = "sphinx-rtd-theme" },
-    { name = "tox" },
-]
-docs = [
-    { name = "myst-parser" },
-    { name = "sphinx" },
-    { name = "sphinx-autoapi" },
-    { name = "sphinx-rtd-theme" },
-]
-monitoring = [
-    { name = "grafana-client" },
-    { name = "jaeger-client" },
-    { name = "opentelemetry-api" },
-    { name = "opentelemetry-sdk" },
-    { name = "prometheus-client" },
-]
-performance = [
-    { name = "cchardet" },
-    { name = "orjson" },
-    { name = "uvloop" },
-]
-
-[package.dev-dependencies]
-dev = [
-    { name = "ruff" },
-]
-
-[package.metadata]
-requires-dist = [
-    { name = "aiofiles", specifier = ">=23.0.0" },
-    { name = "aiohttp", specifier = ">=3.9.0" },
-    { name = "aiomysql", specifier = ">=0.2.0" },
-    { name = "aioredis", specifier = ">=2.0.0" },
-    { name = "asyncio-mqtt", specifier = ">=0.16.0" },
-    { name = "bandit", marker = "extra == 'dev'", specifier = ">=1.7.0" },
-    { name = "bcrypt", specifier = ">=4.1.0" },
-    { name = "black", marker = "extra == 'dev'", specifier = ">=23.12.0" },
-    { name = "cchardet", marker = "extra == 'performance'", specifier = ">=2.1.0" },
-    { name = "click", specifier = ">=8.1.0" },
-    { name = "cryptography", specifier = ">=41.0.0" },
-    { name = "fastapi", specifier = ">=0.108.0" },
-    { name = "flake8", marker = "extra == 'dev'", specifier = ">=7.0.0" },
-    { name = "grafana-client", marker = "extra == 'monitoring'", specifier = ">=3.5.0" },
-    { name = "httpx", specifier = ">=0.26.0" },
-    { name = "isort", marker = "extra == 'dev'", specifier = ">=5.13.0" },
-    { name = "jaeger-client", marker = "extra == 'monitoring'", specifier = ">=4.8.0" },
-    { name = "mcp", specifier = ">=1.8.0,<2.0.0" },
-    { name = "mypy", marker = "extra == 'dev'", specifier = ">=1.8.0" },
-    { name = "myst-parser", marker = "extra == 'dev'", specifier = ">=2.0.0" },
-    { name = "myst-parser", marker = "extra == 'docs'", specifier = ">=2.0.0" },
-    { name = "numpy", specifier = ">=1.24.0" },
-    { name = "opentelemetry-api", marker = "extra == 'monitoring'", specifier = ">=1.21.0" },
-    { name = "opentelemetry-sdk", marker = "extra == 'monitoring'", specifier = ">=1.21.0" },
-    { name = "orjson", specifier = ">=3.9.0" },
-    { name = "orjson", marker = "extra == 'performance'", specifier = ">=3.9.0" },
-    { name = "pandas", specifier = ">=2.0.0" },
-    { name = "passlib", extras = ["bcrypt"], specifier = ">=1.7.0" },
-    { name = "pre-commit", marker = "extra == 'dev'", specifier = ">=3.6.0" },
-    { name = "prometheus-client", specifier = ">=0.19.0" },
-    { name = "prometheus-client", marker = "extra == 'monitoring'", specifier = ">=0.19.0" },
-    { name = "pydantic", specifier = ">=2.5.0" },
-    { name = "pydantic-settings", specifier = ">=2.1.0" },
-    { name = "pyjwt", specifier = ">=2.8.0" },
-    { name = "pymysql", specifier = ">=1.1.0" },
-    { name = "pytest", specifier = ">=8.4.0" },
-    { name = "pytest", marker = "extra == 'dev'", specifier = ">=7.4.0" },
-    { name = "pytest-asyncio", specifier = ">=1.0.0" },
-    { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = ">=0.23.0" },
-    { name = "pytest-cov", specifier = ">=6.1.1" },
-    { name = "pytest-cov", marker = "extra == 'dev'", specifier = ">=4.1.0" },
-    { name = "pytest-mock", marker = "extra == 'dev'", specifier = ">=3.12.0" },
-    { name = "pytest-xdist", marker = "extra == 'dev'", specifier = ">=3.5.0" },
-    { name = "python-dateutil", specifier = ">=2.8.0" },
-    { name = "python-dotenv", specifier = ">=1.0.0" },
-    { name = "python-jose", extras = ["cryptography"], specifier = ">=3.3.0" },
-    { name = "python-multipart", specifier = ">=0.0.6" },
-    { name = "pyyaml", specifier = ">=6.0.0" },
-    { name = "requests", specifier = ">=2.31.0" },
-    { name = "rich", specifier = ">=13.7.0" },
-    { name = "ruff", marker = "extra == 'dev'", specifier = ">=0.1.0" },
-    { name = "safety", marker = "extra == 'dev'", specifier = ">=2.3.0" },
-    { name = "sphinx", marker = "extra == 'dev'", specifier = ">=7.2.0" },
-    { name = "sphinx", marker = "extra == 'docs'", specifier = ">=7.2.0" },
-    { name = "sphinx-autoapi", marker = "extra == 'docs'", specifier = ">=3.0.0" },
-    { name = "sphinx-rtd-theme", marker = "extra == 'dev'", specifier = ">=2.0.0" },
-    { name = "sphinx-rtd-theme", marker = "extra == 'docs'", specifier = ">=2.0.0" },
-    { name = "sqlparse", specifier = ">=0.4.4" },
-    { name = "starlette", specifier = ">=0.27.0" },
-    { name = "structlog", specifier = ">=23.2.0" },
-    { name = "toml", specifier = ">=0.10.0" },
-    { name = "tox", marker = "extra == 'dev'", specifier = ">=4.11.0" },
-    { name = "tqdm", specifier = ">=4.66.0" },
-    { name = "typer", specifier = ">=0.9.0" },
-    { name = "uvicorn", extras = ["standard"], specifier = ">=0.25.0" },
-    { name = "uvloop", marker = "extra == 'performance'", specifier = ">=0.19.0" },
-    { name = "websockets", specifier = ">=12.0" },
-]
-provides-extras = ["dev", "docs", "performance", "monitoring"]
-
-[package.metadata.requires-dev]
-dev = [{ name = "ruff", specifier = ">=0.11.13" }]
-
 [[package]]
 name = "mdit-py-plugins"
 version = "0.4.2"