fix: configure keepAlive time for gRPC TCP connections

Author: rahul2393

google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py

@@ -276,6 +276,7 @@ def __init__(
                 options=[
                     ("grpc.max_send_message_length", -1),
                     ("grpc.max_receive_message_length", -1),
+                    ("grpc.keepalive_time_ms", 120000),
                 ],
             )
 

google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py

@@ -325,6 +325,7 @@ def __init__(
                 options=[
                     ("grpc.max_send_message_length", -1),
                     ("grpc.max_receive_message_length", -1),
+                    ("grpc.keepalive_time_ms", 120000),
                 ],
             )
 

google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py

@@ -285,6 +285,7 @@ def __init__(
                 options=[
                     ("grpc.max_send_message_length", -1),
                     ("grpc.max_receive_message_length", -1),
+                    ("grpc.keepalive_time_ms", 120000),
                 ],
             )
 

google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py

@@ -334,6 +334,7 @@ def __init__(
                 options=[
                     ("grpc.max_send_message_length", -1),
                     ("grpc.max_receive_message_length", -1),
+                    ("grpc.keepalive_time_ms", 120000),
                 ],
             )
 

google/cloud/spanner_v1/services/spanner/transports/grpc.py

@@ -267,6 +267,7 @@ def __init__(
                 options=[
                     ("grpc.max_send_message_length", -1),
                     ("grpc.max_receive_message_length", -1),
+                    ("grpc.keepalive_time_ms", 120000),
                 ],
             )
 

google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py

@@ -315,6 +315,7 @@ def __init__(
                 options=[
                     ("grpc.max_send_message_length", -1),
                     ("grpc.max_receive_message_length", -1),
+                    ("grpc.keepalive_time_ms", 120000),
                 ],
             )