Use Protocol instead of init with properties

Author: andystaples

durabletask/internal/proto_task_hub_sidecar_service_stub.py

@@ -1,38 +1,34 @@
-from typing import Any, Callable
+from typing import Any, Callable, Protocol
 
 
-class ProtoTaskHubSidecarServiceStub(object):
+class ProtoTaskHubSidecarServiceStub(Protocol):
     """A stub class roughly matching the TaskHubSidecarServiceStub generated from the .proto file.
     Used by Azure Functions during orchestration and entity executions to inject custom behavior,
     as no real sidecar stub is available.
     """
-
-    def __init__(self):
-        """Constructor.
-        """
-        self.Hello: Callable[..., Any]
-        self.StartInstance: Callable[..., Any]
-        self.GetInstance: Callable[..., Any]
-        self.RewindInstance: Callable[..., Any]
-        self.WaitForInstanceStart: Callable[..., Any]
-        self.WaitForInstanceCompletion: Callable[..., Any]
-        self.RaiseEvent: Callable[..., Any]
-        self.TerminateInstance: Callable[..., Any]
-        self.SuspendInstance: Callable[..., Any]
-        self.ResumeInstance: Callable[..., Any]
-        self.QueryInstances: Callable[..., Any]
-        self.PurgeInstances: Callable[..., Any]
-        self.GetWorkItems: Callable[..., Any]
-        self.CompleteActivityTask: Callable[..., Any]
-        self.CompleteOrchestratorTask: Callable[..., Any]
-        self.CompleteEntityTask: Callable[..., Any]
-        self.StreamInstanceHistory: Callable[..., Any]
-        self.CreateTaskHub: Callable[..., Any]
-        self.DeleteTaskHub: Callable[..., Any]
-        self.SignalEntity: Callable[..., Any]
-        self.GetEntity: Callable[..., Any]
-        self.QueryEntities: Callable[..., Any]
-        self.CleanEntityStorage: Callable[..., Any]
-        self.AbandonTaskActivityWorkItem: Callable[..., Any]
-        self.AbandonTaskOrchestratorWorkItem: Callable[..., Any]
-        self.AbandonTaskEntityWorkItem: Callable[..., Any]
+    Hello: Callable[..., Any]
+    StartInstance: Callable[..., Any]
+    GetInstance: Callable[..., Any]
+    RewindInstance: Callable[..., Any]
+    WaitForInstanceStart: Callable[..., Any]
+    WaitForInstanceCompletion: Callable[..., Any]
+    RaiseEvent: Callable[..., Any]
+    TerminateInstance: Callable[..., Any]
+    SuspendInstance: Callable[..., Any]
+    ResumeInstance: Callable[..., Any]
+    QueryInstances: Callable[..., Any]
+    PurgeInstances: Callable[..., Any]
+    GetWorkItems: Callable[..., Any]
+    CompleteActivityTask: Callable[..., Any]
+    CompleteOrchestratorTask: Callable[..., Any]
+    CompleteEntityTask: Callable[..., Any]
+    StreamInstanceHistory: Callable[..., Any]
+    CreateTaskHub: Callable[..., Any]
+    DeleteTaskHub: Callable[..., Any]
+    SignalEntity: Callable[..., Any]
+    GetEntity: Callable[..., Any]
+    QueryEntities: Callable[..., Any]
+    CleanEntityStorage: Callable[..., Any]
+    AbandonTaskActivityWorkItem: Callable[..., Any]
+    AbandonTaskOrchestratorWorkItem: Callable[..., Any]
+    AbandonTaskEntityWorkItem: Callable[..., Any]