[dashboards][core] Make do_reply accept status_code, instead of success: bool

python/ray/dashboard/modules/state/state_head.py

@@ -30,7 +30,7 @@
 from ray.dashboard.subprocesses.module import SubprocessModule
 from ray.dashboard.subprocesses.routes import SubprocessRouteTable as routes
 from ray.dashboard.subprocesses.utils import ResponseType
-from ray.dashboard.utils import RateLimitedModule
+from ray.dashboard.utils import HTTPStatusCode, RateLimitedModule
 from ray.util.state.common import (
     DEFAULT_DOWNLOAD_FILENAME,
     DEFAULT_LOG_LIMIT,
@@ -86,7 +86,7 @@ def __init__(self, *args, **kwargs):
 
     async def limit_handler_(self):
         return do_reply(
-            success=False,
+            status_code=HTTPStatusCode.TOO_MANY_REQUESTS,
             error_message=(
                 "Max number of in-progress requests="
                 f"{self.max_num_call_} reached. "
@@ -110,12 +110,16 @@ async def list_jobs(self, req: aiohttp.web.Request) -> aiohttp.web.Response:
         try:
             result = await self._state_api.list_jobs(option=options_from_req(req))
             return do_reply(
-                success=True,
+                status_code=HTTPStatusCode.OK,
                 error_message="",
                 result=asdict(result),
             )
         except DataSourceUnavailable as e:
-            return do_reply(success=False, error_message=str(e), result=None)
+            return do_reply(
+                status_code=HTTPStatusCode.INTERNAL_ERROR,
+                error_message=str(e),
+                result=None,
+            )
 
     @routes.get("/api/v0/nodes")
     @RateLimitedModule.enforce_max_concurrent_calls
@@ -171,7 +175,7 @@ async def list_logs(self, req: aiohttp.web.Request) -> aiohttp.web.Response:
 
         if not node_id and not node_ip:
             return do_reply(
-                success=False,
+                status_code=HTTPStatusCode.BAD_REQUEST,
                 error_message=(
                     "Both node id and node ip are not provided. "
                     "Please provide at least one of them."
@@ -182,7 +186,7 @@ async def list_logs(self, req: aiohttp.web.Request) -> aiohttp.web.Response:
             node_id = await self._log_api.ip_to_node_id(node_ip)
         if not node_id:
             return do_reply(
-                success=False,
+                status_code=HTTPStatusCode.NOT_FOUND,
                 error_message=(
                     f"Cannot find matching node_id for a given node ip {node_ip}"
                 ),
@@ -195,12 +199,16 @@ async def list_logs(self, req: aiohttp.web.Request) -> aiohttp.web.Response:
             )
         except DataSourceUnavailable as e:
             return do_reply(
-                success=False,
+                status_code=HTTPStatusCode.INTERNAL_ERROR,
                 error_message=str(e),
                 result=None,
             )
 
-        return do_reply(success=True, error_message="", result=result)
+        return do_reply(
+            status_code=HTTPStatusCode.OK,
+            error_message="",
+            result=result,
+        )
 
     @routes.get("/api/v0/logs/{media_type}", resp_type=ResponseType.STREAM)
     @RateLimitedModule.enforce_max_concurrent_calls
@@ -330,7 +338,7 @@ async def delayed_response(self, req: aiohttp.web.Request):
         delay = int(req.match_info.get("delay_s", 10))
         await asyncio.sleep(delay)
         return do_reply(
-            success=True,
+            status_code=HTTPStatusCode.OK,
             error_message="",
             result={},
             partial_failure_warning=None,

python/ray/dashboard/state_api_utils.py

@@ -23,9 +23,11 @@
 from ray.util.state.util import convert_string_to_type
 
 
-def do_reply(success: bool, error_message: str, result: ListApiResponse, **kwargs):
+def do_reply(
+    status_code: HTTPStatusCode, error_message: str, result: ListApiResponse, **kwargs
+):
     return rest_response(
-        status_code=HTTPStatusCode.OK if success else HTTPStatusCode.INTERNAL_ERROR,
+        status_code=status_code,
         message=error_message,
         result=result,
         convert_google_style=False,
@@ -40,14 +42,22 @@ async def handle_list_api(
     try:
         result = await list_api_fn(option=options_from_req(req))
         return do_reply(
-            success=True,
+            status_code=HTTPStatusCode.OK,
             error_message="",
             result=asdict(result),
         )
     except ValueError as e:
-        return do_reply(success=False, error_message=str(e), result=None)
+        return do_reply(
+            status_code=HTTPStatusCode.BAD_REQUEST,
+            error_message=str(e),
+            result=None,
+        )
     except DataSourceUnavailable as e:
-        return do_reply(success=False, error_message=str(e), result=None)
+        return do_reply(
+            status_code=HTTPStatusCode.INTERNAL_ERROR,
+            error_message=str(e),
+            result=None,
+        )
 
 
 def _get_filters_from_req(
@@ -104,7 +114,7 @@ async def handle_summary_api(
 ):
     result = await summary_fn(option=summary_options_from_req(req))
     return do_reply(
-        success=True,
+        status_code=HTTPStatusCode.OK,
         error_message="",
         result=asdict(result),
     )

python/ray/dashboard/utils.py

@@ -48,7 +48,9 @@ class HTTPStatusCode(IntEnum):
     OK = 200
 
     # 4xx Client Errors
+    BAD_REQUEST = 400
     NOT_FOUND = 404
+    TOO_MANY_REQUESTS = 429
 
     # 5xx Server Errors
     INTERNAL_ERROR = 500

python/ray/tests/test_state_api.py

@@ -5,7 +5,7 @@
 import time
 from collections import Counter
 from concurrent.futures import ThreadPoolExecutor
-from typing import List
+from typing import List, Optional
 from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
@@ -860,6 +860,59 @@ async def test_api_manager_list_workers(state_api_manager):
     assert exc_info.value.args[0] == GCS_QUERY_FAILURE_WARNING
 
 
+@pytest.mark.asyncio
+@pytest.mark.parametrize(
+    ("exception", "status_code"),
+    [
+        (None, 200),
+        (ValueError("Invalid filter parameter"), 400),
+        (DataSourceUnavailable("GCS connection failed"), 500),
+    ],
+)
+async def test_handle_list_api_status_codes(
+    exception: Optional[Exception], status_code: int
+):
+    """Test that handle_list_api calls do_reply with correct status codes.
+
+    This directly tests the HTTP layer logic that maps exceptions to status codes:
+    - Success → HTTP 200 OK
+    - ValueError → HTTP 400 BAD_REQUEST
+    - DataSourceUnavailable → HTTP 500 INTERNAL_ERROR
+    """
+    from unittest.mock import AsyncMock, MagicMock
+
+    from ray.dashboard.state_api_utils import handle_list_api
+    from ray.util.state.common import ListApiResponse
+
+    # 1. Mock aiohttp request with proper query interface
+    mock_request = MagicMock()
+
+    def mock_get(key, default=None):
+        return default
+
+    mock_request.query = MagicMock()
+    mock_request.query.get = mock_get
+
+    # 2. Mock response whether success or failure.
+    if exception is None:
+        mock_backend = AsyncMock(
+            return_value=ListApiResponse(
+                result=[],
+                total=0,
+                num_after_truncation=0,
+                num_filtered=0,
+                partial_failure_warning="",
+            )
+        )
+    else:
+        mock_backend = AsyncMock(side_effect=exception)
+
+    response = await handle_list_api(mock_backend, mock_request)
+
+    # 3. Assert status_code is correct.
+    assert response.status == status_code
+
+
 @pytest.mark.asyncio
 async def test_api_manager_list_tasks(state_api_manager):
     data_source_client = state_api_manager.data_source_client