fix(api): synchronize hydraulic playback binary contract

app/api/v1/endpoints/timeseries/playback.py

@@ -13,6 +13,8 @@ from app.domain.time import parse_utc_time
 from .dependencies import get_timescale_connection
 
 router = APIRouter(prefix="/timeseries/realtime/playback")
+BINARY_RESPONSE = {200: {"description": "Versioned little-endian Float32 packet",
+                         "content": {"application/octet-stream": {"schema": {"type": "string", "format": "binary"}}}}}
 # Bounded per-process cache, private to the authorized project and database route.
 _cache: OrderedDict[tuple, tuple[float, PlaybackGeometry]] = OrderedDict()
 _load_lock = asyncio.Lock()
@@ -36,7 +38,8 @@ async def geometry_for_project(ctx: ProjectContext, conn: AsyncConnection) -> Pl
         return geometry
 
 
-@router.get("/geometry", summary="读取带版本的水力专题层静态几何")
+@router.get("/geometry", summary="读取带版本的水力专题层静态几何",
+            response_class=Response, responses=BINARY_RESPONSE)
 async def playback_geometry(ctx: ProjectContext = Depends(get_project_context),
                             conn: AsyncConnection = Depends(get_project_pg_connection)):
     try:
@@ -47,7 +50,8 @@ async def playback_geometry(ctx: ProjectContext = Depends(get_project_context),
                     headers={"Cache-Control": "private, no-store", "ETag": f'"{geometry.version}"'})
 
 
-@router.get("/frames", summary="读取索引一致的 Float32 水力时间块")
+@router.get("/frames", summary="读取索引一致的 Float32 水力时间块",
+            response_class=Response, responses=BINARY_RESPONSE)
 async def playback_frames(
     start_time: str,
     model_version: str = Query(min_length=24, max_length=24),

contracts/manifest.json

@@ -3,7 +3,7 @@
   "contracts": {
     "server": {
       "file": "server-v1.openapi.json",
-      "sha256": "9801087d40ac0e1f67871f9a1db850cbcce47614cceec0a7e8771cdf58385f53"
+      "sha256": "04aeed6f1a7414b37267d84141d036d00d2f8579ee28af37590bd4b92137e712"
     }
   }
 }

contracts/server-v1.openapi.json

@@ -50912,6 +50912,246 @@
         ]
       }
     },
+    "/api/v1/timeseries/realtime/playback/frames": {
+      "get": {
+        "operationId": "get_timeseries_realtime_playback_frames",
+        "parameters": [
+          {
+            "in": "query",
+            "name": "start_time",
+            "required": true,
+            "schema": {
+              "title": "Start Time",
+              "type": "string"
+            }
+          },
+          {
+            "in": "query",
+            "name": "model_version",
+            "required": true,
+            "schema": {
+              "maxLength": 24,
+              "minLength": 24,
+              "title": "Model Version",
+              "type": "string"
+            }
+          },
+          {
+            "in": "query",
+            "name": "frame_count",
+            "required": false,
+            "schema": {
+              "default": 4,
+              "maximum": 8,
+              "minimum": 1,
+              "title": "Frame Count",
+              "type": "integer"
+            }
+          },
+          {
+            "in": "query",
+            "name": "step_seconds",
+            "required": false,
+            "schema": {
+              "default": 900,
+              "maximum": 3600,
+              "minimum": 60,
+              "title": "Step Seconds",
+              "type": "integer"
+            }
+          },
+          {
+            "in": "header",
+            "name": "X-Project-Id",
+            "required": true,
+            "schema": {
+              "title": "X-Project-Id",
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "content": {
+              "application/octet-stream": {
+                "schema": {
+                  "format": "binary",
+                  "type": "string"
+                }
+              }
+            },
+            "description": "Versioned little-endian Float32 packet"
+          },
+          "401": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Authentication required"
+          },
+          "403": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Insufficient permission"
+          },
+          "404": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Resource not found"
+          },
+          "409": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Resource conflict"
+          },
+          "422": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Validation error"
+          },
+          "503": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Dependency unavailable"
+          }
+        },
+        "security": [
+          {
+            "OAuth2PasswordBearer": []
+          }
+        ],
+        "summary": "读取索引一致的 Float32 水力时间块",
+        "tags": [
+          "TimescaleDB - Hydraulic Playback"
+        ]
+      }
+    },
+    "/api/v1/timeseries/realtime/playback/geometry": {
+      "get": {
+        "operationId": "get_timeseries_realtime_playback_geometry",
+        "parameters": [
+          {
+            "in": "header",
+            "name": "X-Project-Id",
+            "required": true,
+            "schema": {
+              "title": "X-Project-Id",
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "content": {
+              "application/octet-stream": {
+                "schema": {
+                  "format": "binary",
+                  "type": "string"
+                }
+              }
+            },
+            "description": "Versioned little-endian Float32 packet"
+          },
+          "401": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Authentication required"
+          },
+          "403": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Insufficient permission"
+          },
+          "404": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Resource not found"
+          },
+          "409": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Resource conflict"
+          },
+          "422": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Validation error"
+          },
+          "503": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            },
+            "description": "Dependency unavailable"
+          }
+        },
+        "security": [
+          {
+            "OAuth2PasswordBearer": []
+          }
+        ],
+        "summary": "读取带版本的水力专题层静态几何",
+        "tags": [
+          "TimescaleDB - Hydraulic Playback"
+        ]
+      }
+    },
     "/api/v1/timeseries/realtime/records": {
       "get": {
         "description": "查询指定时间点的实时属性值。query_time 必须显式带时区；允许传 UTC+8，服务端会先归一化为 UTC 再执行查询。",

tests/api/test_hydraulic_playback_endpoints.py

@@ -77,3 +77,10 @@ def test_cache_separates_projects_and_database_routes(monkeypatch):
     asyncio.run(run())
     assert calls == ["one", "two", "one"]
     playback._cache.clear()
+
+
+def test_contract_advertises_binary_packets_instead_of_json():
+    schema = build_test_app(playback.router, "/api/v1").openapi()
+    for suffix in ("geometry", "frames"):
+        content = schema["paths"][f"/api/v1/timeseries/realtime/playback/{suffix}"]["get"]["responses"]["200"]["content"]
+        assert content == {"application/octet-stream": {"schema": {"type": "string", "format": "binary"}}}