fix: Fix circular import due to make_admin_client and AdminClient being in the same file

google/cloud/pubsublite/admin_client.py

@@ -1,15 +1,10 @@
 from abc import ABC, abstractmethod
-from typing import List, Optional
+from typing import List
 
-from google.api_core.client_options import ClientOptions
-from google.protobuf.field_mask_pb2 import FieldMask
-
-from google.cloud.pubsublite.endpoints import regional_endpoint
-from google.cloud.pubsublite.internal.wire.admin_client_impl import AdminClientImpl
 from google.cloud.pubsublite.location import CloudRegion
 from google.cloud.pubsublite.paths import TopicPath, LocationPath, SubscriptionPath
-from google.cloud.pubsublite_v1 import Topic, Subscription, AdminServiceClient
-from google.auth.credentials import Credentials
+from google.cloud.pubsublite_v1 import Topic, Subscription
+from google.protobuf.field_mask_pb2 import FieldMask
 
 
 class AdminClient(ABC):
@@ -66,16 +61,3 @@ def update_subscription(
     @abstractmethod
     def delete_subscription(self, subscription_path: SubscriptionPath):
         """Delete a subscription and all associated messages."""
-
-
-def make_admin_client(
-    region: CloudRegion,
-    credentials: Optional[Credentials] = None,
-    client_options: Optional[ClientOptions] = None,
-) -> AdminClient:
-    if client_options is None:
-        client_options = ClientOptions(api_endpoint=regional_endpoint(region))
-    return AdminClientImpl(
-        AdminServiceClient(client_options=client_options, credentials=credentials),
-        region,
-    )

google/cloud/pubsublite/internal/wire/make_publisher.py

@@ -1,6 +1,6 @@
 from typing import AsyncIterator, Mapping, Optional, MutableMapping
 
-from google.cloud.pubsublite.admin_client import make_admin_client
+from google.cloud.pubsublite.make_admin_client import make_admin_client
 from google.cloud.pubsublite.endpoints import regional_endpoint
 from google.cloud.pubsublite.internal.wire.default_routing_policy import (
     DefaultRoutingPolicy,

google/cloud/pubsublite/make_admin_client.py

@@ -0,0 +1,23 @@
+from typing import Optional
+
+from google.api_core.client_options import ClientOptions
+
+from google.cloud.pubsublite.admin_client import AdminClient
+from google.cloud.pubsublite.endpoints import regional_endpoint
+from google.cloud.pubsublite.internal.wire.admin_client_impl import AdminClientImpl
+from google.cloud.pubsublite.location import CloudRegion
+from google.cloud.pubsublite_v1 import AdminServiceClient
+from google.auth.credentials import Credentials
+
+
+def make_admin_client(
+    region: CloudRegion,
+    credentials: Optional[Credentials] = None,
+    client_options: Optional[ClientOptions] = None,
+) -> AdminClient:
+    if client_options is None:
+        client_options = ClientOptions(api_endpoint=regional_endpoint(region))
+    return AdminClientImpl(
+        AdminServiceClient(client_options=client_options, credentials=credentials),
+        region,
+    )