♻️ Refactor: cleanup model_managment_app.py, memory_config_app.py

backend/apps/me_model_managment_app.py

@@ -1,7 +1,7 @@
 import logging
 from http import HTTPStatus
 
-from fastapi import APIRouter, Query
+from fastapi import APIRouter, Query, HTTPException
 from fastapi.responses import JSONResponse
 
 from consts.exceptions import TimeoutException, NotFoundException, MEConnectionException
@@ -44,9 +44,9 @@ async def get_me_models(
             "data": []
         })
     except Exception as e:
-        logging.error(f"Failed to get model list: {str(e)}")
+        logging.error(f"Failed to get me model list: {str(e)}")
         return JSONResponse(status_code=HTTPStatus.INTERNAL_SERVER_ERROR, content={
-            "message": f"Failed to get model list: {str(e)}",
+            "message": f"Failed to get me model list: {str(e)}",
             "data": []
         })
 
@@ -61,23 +61,16 @@ async def check_me_connectivity(timeout: int = Query(default=2, description="Tim
         return JSONResponse(
             status_code=HTTPStatus.OK,
             content={
-                "status": "Connected",
-                "desc": "Connection successful.",
-                "connect_status": ModelConnectStatusEnum.AVAILABLE.value
+                "connectivity": True,
+                "message": "ModelEngine model connect successfully.",
             }
         )
     except MEConnectionException as e:
-        logging.error(f"Request me model connectivity failed: {str(e)}")
-        return JSONResponse(status_code=HTTPStatus.SERVICE_UNAVAILABLE, content={"status": "Disconnected",
-                                                                                 "desc": f"Connection failed.",
-                                                                                 "connect_status": ModelConnectStatusEnum.UNAVAILABLE.value})
+        logging.error(f"ModelEngine model healthcheck failed: {str(e)}")
+        raise HTTPException(status_code=HTTPStatus.SERVICE_UNAVAILABLE, detail="ModelEngine model connect failed.")
     except TimeoutException as e:
-        logging.error(f"Request me model connectivity timeout: {str(e)}")
-        return JSONResponse(status_code=HTTPStatus.REQUEST_TIMEOUT, content={"status": "Disconnected",
-                                                                             "desc": "Connection timeout.",
-                                                                             "connect_status": ModelConnectStatusEnum.UNAVAILABLE.value})
+        logging.error(f"ModelEngine model healthcheck timeout: {str(e)}")
+        raise HTTPException(status_code=HTTPStatus.REQUEST_TIMEOUT, detail="ModelEngine model connect timeout.")
     except Exception as e:
-        logging.error(f"Unknown error occurred: {str(e)}.")
-        return JSONResponse(status_code=HTTPStatus.INTERNAL_SERVER_ERROR, content={"status": "Disconnected",
-                                                                                   "desc": f"Unknown error occurred: {str(e)}",
-                                                                                   "connect_status": ModelConnectStatusEnum.UNAVAILABLE.value})
+        logging.error(f"ModelEngine model healthcheck failed with unknown error: {str(e)}.")
+        raise HTTPException(status_code=HTTPStatus.INTERNAL_SERVER_ERROR, detail="ModelEngine model connect failed.")

backend/apps/memory_config_app.py

@@ -1,22 +1,45 @@
+"""Memory configuration and CRUD API endpoints for the app layer.
+
+This module exposes HTTP endpoints under the `/memory` prefix. It follows the
+app-layer responsibilities:
+- Parse and validate HTTP inputs
+- Delegate business logic to the service layer
+- Convert unexpected exceptions to error JSON responses
+
+Routes:
+- GET `/memory/config/load`: Load memory-related configuration for current user
+- POST `/memory/config/set`: Set a single configuration entry
+- POST `/memory/config/disable_agent`: Add a disabled agent id
+- DELETE `/memory/config/disable_agent/{agent_id}`: Remove a disabled agent id
+- POST `/memory/config/disable_useragent`: Add a disabled user-agent id
+- DELETE `/memory/config/disable_useragent/{agent_id}`: Remove a disabled user-agent id
+- POST `/memory/add`: Add memory items (optionally with LLM inference)
+- POST `/memory/search`: Semantic search memory items
+- GET `/memory/list`: List memory items
+- DELETE `/memory/delete/{memory_id}`: Delete a single memory item
+- DELETE `/memory/clear`: Clear memory items by scope
+"""
 import asyncio
 import logging
 from typing import Any, Dict, List, Optional
 
-from fastapi import APIRouter, Body, Header, Path, Query
+from http import HTTPStatus
+from fastapi import APIRouter, Body, Header, Path, Query, HTTPException
 from fastapi.responses import JSONResponse
+
 from nexent.memory.memory_service import (
     add_memory as svc_add_memory,
     clear_memory as svc_clear_memory,
     delete_memory as svc_delete_memory,
     list_memory as svc_list_memory,
     search_memory as svc_search_memory,
 )
-
 from consts.const import (
     MEMORY_AGENT_SHARE_KEY,
     MEMORY_SWITCH_KEY,
 )
 from consts.model import MemoryAgentShareMode
+from consts.exceptions import UnauthorizedError
 from services.memory_config_service import (
     add_disabled_agent_id,
     add_disabled_useragent_id,
@@ -34,35 +57,26 @@
 router = APIRouter(prefix="/memory")
 
 
-# ---------------------------------------------------------------------------
-# Generic helpers
-# ---------------------------------------------------------------------------
-def _success(message: str = "success", content: Optional[Any] = None):
-    return JSONResponse(status_code=200, content={"message": message, "status": "success", "content": content})
-
-
-def _error(message: str = "error"):
-    return JSONResponse(status_code=400, content={"message": message, "status": "error"})
-
-
-# ---------------------------------------------------------------------------
-# Helper function
-# ---------------------------------------------------------------------------
-
-
 # ---------------------------------------------------------------------------
 # Configuration Endpoints
 # ---------------------------------------------------------------------------
 @router.get("/config/load")
 def load_configs(authorization: Optional[str] = Header(None)):
-    """Load all memory-related configuration for current user."""
+    """Load all memory-related configuration for the current user.
+
+    Args:
+        authorization: Optional authorization header used to identify the user.
+    """
     try:
         user_id, _ = get_current_user_id(authorization)
         configs = get_user_configs(user_id)
-        return _success(content=configs)
+        return JSONResponse(status_code=HTTPStatus.OK, content=configs)
+    except UnauthorizedError as e:
+        raise HTTPException(status_code=HTTPStatus.UNAUTHORIZED, detail=str(e))
     except Exception as e:
         logger.error("load_configs failed: %s", e)
-        return _error("Failed to load configuration")
+        raise HTTPException(status_code=HTTPStatus.BAD_REQUEST,
+                            detail="Failed to load configuration")
 
 
 @router.post("/config/set")
@@ -71,7 +85,17 @@ def set_single_config(
     value: Any = Body(..., embed=True, description="Configuration value"),
     authorization: Optional[str] = Header(None),
 ):
-    """Unified endpoint to set single-value configuration items."""
+    """Set a single-value configuration item for the current user.
+
+    Supported keys:
+    - `MEMORY_SWITCH_KEY`: Toggle memory system on/off (boolean-like values accepted)
+    - `MEMORY_AGENT_SHARE_KEY`: Set agent share mode (`always`/`ask`/`never`)
+
+    Args:
+        key: Configuration key to update.
+        value: New value for the configuration key.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, _ = get_current_user_id(authorization)
 
     if key == MEMORY_SWITCH_KEY:
@@ -82,52 +106,93 @@ def set_single_config(
         try:
             mode = MemoryAgentShareMode(str(value))
         except ValueError:
-            return _error("Invalid value for MEMORY_AGENT_SHARE (expected always/ask/never)")
+            raise HTTPException(status_code=HTTPStatus.NOT_ACCEPTABLE,
+                                detail="Invalid value for MEMORY_AGENT_SHARE (expected always/ask/never)")
         ok = set_agent_share(user_id, mode)
     else:
-        return _error("Unsupported configuration key")
+        raise HTTPException(status_code=HTTPStatus.NOT_ACCEPTABLE,
+                            detail="Unsupported configuration key")
 
-    return _success() if ok else _error("Failed to update configuration")
+    if ok:
+        return JSONResponse(status_code=HTTPStatus.OK, content={"success": True})
+    raise HTTPException(status_code=HTTPStatus.BAD_REQUEST,
+                        detail="Failed to update configuration")
 
 
 @router.post("/config/disable_agent")
 def add_disable_agent(
     agent_id: str = Body(..., embed=True),
     authorization: Optional[str] = Header(None),
 ):
+    """Add an agent id to the user's disabled agent list.
+
+    Args:
+        agent_id: Identifier of the agent to disable.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, _ = get_current_user_id(authorization)
     ok = add_disabled_agent_id(user_id, agent_id)
-    return _success() if ok else _error("Failed to add disable agent id")
+    if ok:
+        return JSONResponse(status_code=HTTPStatus.OK, content={"success": True})
+    raise HTTPException(status_code=HTTPStatus.BAD_REQUEST,
+                        detail="Failed to add disable agent id")
 
 
 @router.delete("/config/disable_agent/{agent_id}")
 def remove_disable_agent(
     agent_id: str = Path(...),
     authorization: Optional[str] = Header(None),
 ):
+    """Remove an agent id from the user's disabled agent list.
+
+    Args:
+        agent_id: Identifier of the agent to remove from the disabled list.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, _ = get_current_user_id(authorization)
     ok = remove_disabled_agent_id(user_id, agent_id)
-    return _success() if ok else _error("Failed to remove disable agent id")
+    if ok:
+        return JSONResponse(status_code=HTTPStatus.OK, content={"success": True})
+    raise HTTPException(status_code=HTTPStatus.BAD_REQUEST,
+                        detail="Failed to remove disable agent id")
 
 
 @router.post("/config/disable_useragent")
 def add_disable_useragent(
     agent_id: str = Body(..., embed=True),
     authorization: Optional[str] = Header(None),
 ):
+    """Add a user-agent id to the user's disabled user-agent list.
+
+    Args:
+        agent_id: Identifier of the user-agent to disable.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, _ = get_current_user_id(authorization)
     ok = add_disabled_useragent_id(user_id, agent_id)
-    return _success() if ok else _error("Failed to add disable user-agent id")
+    if ok:
+        return JSONResponse(status_code=HTTPStatus.OK, content={"success": True})
+    raise HTTPException(status_code=HTTPStatus.BAD_REQUEST,
+                        detail="Failed to add disable user-agent id")
 
 
 @router.delete("/config/disable_useragent/{agent_id}")
 def remove_disable_useragent(
     agent_id: str = Path(...),
     authorization: Optional[str] = Header(None),
 ):
+    """Remove a user-agent id from the user's disabled user-agent list.
+
+    Args:
+        agent_id: Identifier of the user-agent to remove from the disabled list.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, _ = get_current_user_id(authorization)
     ok = remove_disabled_useragent_id(user_id, agent_id)
-    return _success() if ok else _error("Failed to remove disable user-agent id")
+    if ok:
+        return JSONResponse(status_code=HTTPStatus.OK, content={"success": True})
+    raise HTTPException(status_code=HTTPStatus.BAD_REQUEST,
+                        detail="Failed to remove disable user-agent id")
 
 
 # ---------------------------------------------------------------------------
@@ -144,6 +209,15 @@ def add_memory(
         True, embed=True, description="Whether to run LLM inference during add"),
     authorization: Optional[str] = Header(None),
 ):
+    """Add memory records for the given scope.
+
+    Args:
+        messages: List of chat messages as dictionaries.
+        memory_level: Scope for the memory record (tenant/agent/user/user_agent).
+        agent_id: Optional agent identifier when scope is agent-related.
+        infer: Whether to run LLM inference during add.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, tenant_id = get_current_user_id(authorization)
     try:
         result = asyncio.run(svc_add_memory(
@@ -155,10 +229,10 @@ def add_memory(
             agent_id=agent_id,
             infer=infer,
         ))
-        return _success(content=result)
+        return JSONResponse(status_code=HTTPStatus.OK, content=result)
     except Exception as e:
         logger.error("add_memory error: %s", e, exc_info=True)
-        return _error(str(e))
+        raise HTTPException(status_code=HTTPStatus.BAD_REQUEST, detail=str(e))
 
 
 @router.post("/search")
@@ -169,6 +243,15 @@ def search_memory(
     agent_id: Optional[str] = Body(None, embed=True),
     authorization: Optional[str] = Header(None),
 ):
+    """Search memory semantically for the given scope.
+
+    Args:
+        query_text: Natural language query to search memory.
+        memory_level: Scope for search (tenant/agent/user/user_agent).
+        top_k: Maximum number of results to return.
+        agent_id: Optional agent identifier when scope is agent-related.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, tenant_id = get_current_user_id(authorization)
     try:
         results = asyncio.run(svc_search_memory(
@@ -180,10 +263,10 @@ def search_memory(
             top_k=top_k,
             agent_id=agent_id,
         ))
-        return _success(content=results)
+        return JSONResponse(status_code=HTTPStatus.OK, content=results)
     except Exception as e:
         logger.error("search_memory error: %s", e, exc_info=True)
-        return _error(str(e))
+        raise HTTPException(status_code=HTTPStatus.BAD_REQUEST, detail=str(e))
 
 
 @router.get("/list")
@@ -194,6 +277,13 @@ def list_memory(
         None, description="Filter by agent id if applicable"),
     authorization: Optional[str] = Header(None),
 ):
+    """List memory for the given scope.
+
+    Args:
+        memory_level: Scope for listing (tenant/agent/user/user_agent).
+        agent_id: Optional agent filter when scope is agent-related.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, tenant_id = get_current_user_id(authorization)
     try:
         payload = asyncio.run(svc_list_memory(
@@ -203,25 +293,31 @@ def list_memory(
             user_id=user_id,
             agent_id=agent_id,
         ))
-        return _success(content=payload)
+        return JSONResponse(status_code=HTTPStatus.OK, content=payload)
     except Exception as e:
         logger.error("list_memory error: %s", e, exc_info=True)
-        return _error(str(e))
+        raise HTTPException(status_code=HTTPStatus.BAD_REQUEST, detail=str(e))
 
 
 @router.delete("/delete/{memory_id}")
 def delete_memory(
     memory_id: str = Path(..., description="ID of memory to delete"),
     authorization: Optional[str] = Header(None),
 ):
+    """Delete a specific memory record by id.
+
+    Args:
+        memory_id: Identifier of the memory record to delete.
+        authorization: Optional authorization header used to identify the user.
+    """
     _user_id, tenant_id = get_current_user_id(authorization)
     try:
         result = asyncio.run(svc_delete_memory(
             memory_id=memory_id, memory_config=build_memory_config(tenant_id)))
-        return _success(content=result)
+        return JSONResponse(status_code=HTTPStatus.OK, content=result)
     except Exception as e:
         logger.error("delete_memory error: %s", e, exc_info=True)
-        return _error(str(e))
+        raise HTTPException(status_code=HTTPStatus.BAD_REQUEST, detail=str(e))
 
 
 @router.delete("/clear")
@@ -232,6 +328,13 @@ def clear_memory(
         None, description="Filter by agent id if applicable"),
     authorization: Optional[str] = Header(None),
 ):
+    """Clear memory records for the given scope.
+
+    Args:
+        memory_level: Scope for clearing (tenant/agent/user/user_agent).
+        agent_id: Optional agent filter when scope is agent-related.
+        authorization: Optional authorization header used to identify the user.
+    """
     user_id, tenant_id = get_current_user_id(authorization)
     try:
         result = asyncio.run(svc_clear_memory(
@@ -241,7 +344,7 @@ def clear_memory(
             user_id=user_id,
             agent_id=agent_id,
         ))
-        return _success(content=result)
+        return JSONResponse(status_code=HTTPStatus.OK, content=result)
     except Exception as e:
         logger.error("clear_memory error: %s", e, exc_info=True)
-        return _error(str(e))
+        raise HTTPException(status_code=HTTPStatus.BAD_REQUEST, detail=str(e))