Make interface explicit in imports

Author: dandavison

hello_nexus/caller/app.py

@@ -5,7 +5,7 @@
 from temporalio.client import Client
 from temporalio.worker import UnsandboxedWorkflowRunner, Worker
 
-from hello_nexus.caller.workflows import (
+from hello_nexus.caller.workflows_via_interface import (
     Echo2CallerWorkflow,
     Echo3CallerWorkflow,
     EchoCallerWorkflow,
@@ -17,7 +17,9 @@
 
 
 async def execute_workflow(workflow_cls: Type[Any], input: Any) -> None:
-    client = await Client.connect("localhost:7233", namespace="my-caller-namespace-python")
+    client = await Client.connect(
+        "localhost:7233", namespace="my-caller-namespace-python"
+    )
     task_queue = "my-caller-task-queue"
 
     async with Worker(

hello_nexus/caller/workflows.py …_nexus/caller/workflows_via_interface.pyhello_nexus/caller/workflows.py renamed to hello_nexus/caller/workflows_via_interface.py hello_nexus/caller/workflows.py renamed to hello_nexus/caller/workflows_via_interface.py

@@ -23,11 +23,13 @@ class EchoOutput:
     message: str
 
 
-@nexusrpc.service
+# TODO(dan): for now, making interface explicit in imports to distinguish from handler
+# implementation. Final import scheme and names TBD.
+@nexusrpc.interface.service
 class MyNexusService:
-    echo: nexusrpc.Operation[EchoInput, EchoOutput]
-    hello: nexusrpc.Operation[HelloInput, HelloOutput]
-    echo2: nexusrpc.Operation[EchoInput, EchoOutput]
-    hello2: nexusrpc.Operation[HelloInput, HelloOutput]
-    echo3: nexusrpc.Operation[EchoInput, EchoOutput]
-    hello3: nexusrpc.Operation[HelloInput, HelloOutput]
+    echo: nexusrpc.interface.Operation[EchoInput, EchoOutput]
+    hello: nexusrpc.interface.Operation[HelloInput, HelloOutput]
+    echo2: nexusrpc.interface.Operation[EchoInput, EchoOutput]
+    hello2: nexusrpc.interface.Operation[HelloInput, HelloOutput]
+    echo3: nexusrpc.interface.Operation[EchoInput, EchoOutput]
+    hello3: nexusrpc.interface.Operation[HelloInput, HelloOutput]