Pin nexusrpc and revert recent nexus updates

.github/workflows/build-binaries.yml

@@ -3,6 +3,7 @@ on:
   push:
     branches:
       - main
+      - dan-9999-pin-nexus
       - "releases/*"
 
 jobs:
@@ -74,8 +75,3 @@ jobs:
         with:
           name: packages-${{ matrix.package-suffix }}
           path: dist
-
-      - name: Deliberately fail to prevent releasing nexus-rpc w/ GitHub link in pyproject.toml
-        run: |
-          echo "This is a deliberate failure to prevent releasing nexus-rpc with a GitHub link in pyproject.toml"
-          exit 1

pyproject.toml

@@ -11,7 +11,7 @@ keywords = [
     "workflow",
 ]
 dependencies = [
-    "nexus-rpc>=1.1.0",
+    "nexus-rpc==1.1.0",
     "protobuf>=3.20,<6",
     "python-dateutil>=2.8.2,<3 ; python_version < '3.11'",
     "types-protobuf>=3.20",
@@ -231,6 +231,3 @@ exclude = [
 [tool.uv]
 # Prevent uv commands from building the package by default
 package = false
-
-[tool.uv.sources]
-nexus-rpc = { git = "https://github.com/nexus-rpc/sdk-python.git", rev = "35f574c711193a6e2560d3e6665732a5bb7ae92c" }

temporalio/nexus/_decorators.py

@@ -123,7 +123,7 @@ async def _start(
             return WorkflowRunOperationHandler(_start, input_type, output_type)
 
         method_name = get_callable_name(start)
-        nexusrpc.set_operation(
+        nexusrpc.set_operation_definition(
             operation_handler_factory,
             nexusrpc.Operation(
                 name=name or method_name,

temporalio/nexus/_util.py

@@ -13,6 +13,7 @@
     TypeVar,
 )
 
+import nexusrpc
 from nexusrpc import (
     InputT,
     OutputT,
@@ -78,10 +79,19 @@ def _get_start_method_input_and_output_type_annotations(
     try:
         type_annotations = typing.get_type_hints(start)
     except TypeError:
+        warnings.warn(
+            f"Expected decorated start method {start} to have type annotations"
+        )
         return None, None
     output_type = type_annotations.pop("return", None)
 
     if len(type_annotations) != 2:
+        suffix = f": {type_annotations}" if type_annotations else ""
+        warnings.warn(
+            f"Expected decorated start method {start} to have exactly 2 "
+            f"type-annotated parameters (ctx and input), but it has {len(type_annotations)}"
+            f"{suffix}."
+        )
         input_type = None
     else:
         ctx_type, input_type = type_annotations.values()
@@ -108,6 +118,28 @@ def get_callable_name(fn: Callable[..., Any]) -> str:
     return method_name
 
 
+# TODO(nexus-preview) Copied from nexusrpc
+def get_operation_factory(
+    obj: Any,
+) -> tuple[
+    Optional[Callable[[Any], Any]],
+    Optional[nexusrpc.Operation[Any, Any]],
+]:
+    """Return the :py:class:`Operation` for the object along with the factory function.
+
+    ``obj`` should be a decorated operation start method.
+    """
+    op_defn = nexusrpc.get_operation_definition(obj)
+    if op_defn:
+        factory = obj
+    else:
+        if factory := getattr(obj, "__nexus_operation_factory__", None):
+            op_defn = nexusrpc.get_operation_definition(factory)
+    if not isinstance(op_defn, nexusrpc.Operation):
+        return None, None
+    return factory, op_defn
+
+
 # TODO(nexus-preview) Copied from nexusrpc
 def set_operation_factory(
     obj: Any,

temporalio/worker/_interceptor.py

@@ -299,14 +299,15 @@ class StartNexusOperationInput(Generic[InputT, OutputT]):
     input: InputT
     schedule_to_close_timeout: Optional[timedelta]
     headers: Optional[Mapping[str, str]]
-    output_type: Optional[type[OutputT]] = None
+    output_type: Optional[Type[OutputT]] = None
 
     def __post_init__(self) -> None:
         """Initialize operation-specific attributes after dataclass creation."""
         if isinstance(self.operation, nexusrpc.Operation):
             self.output_type = self.operation.output_type
         elif callable(self.operation):
-            if op := nexusrpc.get_operation(self.operation):
+            _, op = temporalio.nexus._util.get_operation_factory(self.operation)
+            if isinstance(op, nexusrpc.Operation):
                 self.output_type = op.output_type
             else:
                 raise ValueError(
@@ -325,7 +326,8 @@ def operation_name(self) -> str:
         elif isinstance(self.operation, str):
             return self.operation
         elif callable(self.operation):
-            if op := nexusrpc.get_operation(self.operation):
+            _, op = temporalio.nexus._util.get_operation_factory(self.operation)
+            if isinstance(op, nexusrpc.Operation):
                 return op.name
             else:
                 raise ValueError(

temporalio/workflow.py

@@ -5145,7 +5145,7 @@ async def start_operation(
         operation: nexusrpc.Operation[InputT, OutputT],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> NexusOperationHandle[OutputT]: ...
@@ -5158,7 +5158,7 @@ async def start_operation(
         operation: str,
         input: Any,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> NexusOperationHandle[OutputT]: ...
@@ -5174,7 +5174,7 @@ async def start_operation(
         ],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> NexusOperationHandle[OutputT]: ...
@@ -5190,7 +5190,7 @@ async def start_operation(
         ],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> NexusOperationHandle[OutputT]: ...
@@ -5206,7 +5206,7 @@ async def start_operation(
         ],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> NexusOperationHandle[OutputT]: ...
@@ -5217,7 +5217,7 @@ async def start_operation(
         operation: Any,
         input: Any,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> Any:
@@ -5246,7 +5246,7 @@ async def execute_operation(
         operation: nexusrpc.Operation[InputT, OutputT],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> OutputT: ...
@@ -5259,7 +5259,7 @@ async def execute_operation(
         operation: str,
         input: Any,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> OutputT: ...
@@ -5275,7 +5275,7 @@ async def execute_operation(
         ],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> OutputT: ...
@@ -5294,7 +5294,7 @@ async def execute_operation(
         ],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> OutputT: ...
@@ -5310,7 +5310,7 @@ async def execute_operation(
         ],
         input: InputT,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> OutputT: ...
@@ -5321,7 +5321,7 @@ async def execute_operation(
         operation: Any,
         input: Any,
         *,
-        output_type: Optional[type[OutputT]] = None,
+        output_type: Optional[Type[OutputT]] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> Any:
@@ -5345,7 +5345,7 @@ def __init__(
         self,
         *,
         endpoint: str,
-        service: Union[type[ServiceT], str],
+        service: Union[Type[ServiceT], str],
     ) -> None:
         """Create a Nexus client.
 
@@ -5372,7 +5372,7 @@ async def start_operation(
         operation: Any,
         input: Any,
         *,
-        output_type: Optional[type] = None,
+        output_type: Optional[Type] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> Any:
@@ -5393,7 +5393,7 @@ async def execute_operation(
         operation: Any,
         input: Any,
         *,
-        output_type: Optional[type] = None,
+        output_type: Optional[Type] = None,
         schedule_to_close_timeout: Optional[timedelta] = None,
         headers: Optional[Mapping[str, str]] = None,
     ) -> Any:
@@ -5410,7 +5410,7 @@ async def execute_operation(
 @overload
 def create_nexus_client(
     *,
-    service: type[ServiceT],
+    service: Type[ServiceT],
     endpoint: str,
 ) -> NexusClient[ServiceT]: ...
 
@@ -5425,9 +5425,9 @@ def create_nexus_client(
 
 def create_nexus_client(
     *,
-    service: Union[type[ServiceT], str],
+    service: Union[Type[ServiceT], str],
     endpoint: str,
-) -> NexusClient[Any]:
+) -> NexusClient[ServiceT]:
     """Create a Nexus client.
 
     .. warning::

tests/nexus/test_dynamic_creation_of_user_handler_classes.py

@@ -3,9 +3,11 @@
 import httpx
 import nexusrpc.handler
 import pytest
+from nexusrpc.handler import sync_operation
 
 from temporalio import nexus, workflow
 from temporalio.client import Client
+from temporalio.nexus._util import get_operation_factory
 from temporalio.testing import WorkflowEnvironment
 from temporalio.worker import Worker
 from tests.helpers.nexus import ServiceClient, create_nexus_endpoint
@@ -76,8 +78,8 @@ async def test_run_nexus_service_from_programmatically_created_service_handler(
     service_handler = nexusrpc.handler._core.ServiceHandler(
         service=nexusrpc.ServiceDefinition(
             name="MyService",
-            operation_definitions={
-                "increment": nexusrpc.OperationDefinition[int, int](
+            operations={
+                "increment": nexusrpc.Operation[int, int](
                     name="increment",
                     method_name="increment",
                     input_type=int,
@@ -105,3 +107,70 @@ async def test_run_nexus_service_from_programmatically_created_service_handler(
                 json=1,
             )
             assert response.status_code == 201
+
+
+def make_incrementer_user_service_definition_and_service_handler_classes(
+    op_names: list[str],
+) -> tuple[type, type]:
+    #
+    # service contract
+    #
+
+    ops = {name: nexusrpc.Operation[int, int] for name in op_names}
+    service_cls: type = nexusrpc.service(type("ServiceContract", (), ops))
+
+    #
+    # service handler
+    #
+    @sync_operation
+    async def _increment_op(
+        self,
+        ctx: nexusrpc.handler.StartOperationContext,
+        input: int,
+    ) -> int:
+        return input + 1
+
+    op_handler_factories = {}
+    for name in op_names:
+        op_handler_factory, _ = get_operation_factory(_increment_op)
+        assert op_handler_factory
+        op_handler_factories[name] = op_handler_factory
+
+    handler_cls: type = nexusrpc.handler.service_handler(service=service_cls)(
+        type("ServiceImpl", (), op_handler_factories)
+    )
+
+    return service_cls, handler_cls
+
+
+@pytest.mark.skip(
+    reason="Dynamic creation of service contract using type() is not supported"
+)
+async def test_dynamic_creation_of_user_handler_classes(
+    client: Client, env: WorkflowEnvironment
+):
+    task_queue = str(uuid.uuid4())
+
+    service_cls, handler_cls = (
+        make_incrementer_user_service_definition_and_service_handler_classes(
+            ["increment"]
+        )
+    )
+
+    assert (service_defn := nexusrpc.get_service_definition(service_cls))
+    service_name = service_defn.name
+
+    endpoint = (await create_nexus_endpoint(task_queue, client)).endpoint.id
+    async with Worker(
+        client,
+        task_queue=task_queue,
+        nexus_service_handlers=[handler_cls()],
+    ):
+        server_address = ServiceClient.default_server_address(env)
+        async with httpx.AsyncClient() as http_client:
+            response = await http_client.post(
+                f"http://{server_address}/nexus/endpoints/{endpoint}/services/{service_name}/increment",
+                json=1,
+            )
+            assert response.status_code == 200
+            assert response.json() == 2