fix: add DNS resolution configuration for Docker networking

Co-Authored-By: Rushil Srivastava <[email protected]>

Author: devin-ai-integration[bot]

fastapi_gcp_tasks/utils.py

@@ -49,15 +49,22 @@ def emulator_client() -> tasks_v2.CloudTasksClient:
     host = os.getenv("CLOUD_TASKS_EMULATOR_HOST", "localhost")
     port = os.getenv("CLOUD_TASKS_EMULATOR_PORT", "8123")
     target = f"{host}:{port}"
-    channel = grpc.insecure_channel(
-        target,
-        options=[
-            ('grpc.enable_http_proxy', 0),
-            ('grpc.enable_retries', 0),
-            ('grpc.max_receive_message_length', -1),
-            ('grpc.max_send_message_length', -1),
-            ('grpc.keepalive_time_ms', 30000),
-        ],
-    )
+    
+    # Configure DNS resolution for Docker networking
+    options = [
+        ('grpc.enable_http_proxy', 0),
+        ('grpc.enable_retries', 0),
+        ('grpc.max_receive_message_length', -1),
+        ('grpc.max_send_message_length', -1),
+        ('grpc.keepalive_time_ms', 30000),
+        ('grpc.dns_resolver_query_timeout_ms', 1000),
+        ('grpc.dns_resolver_backoff_multiplier', 1.0),
+        ('grpc.dns_resolver_backoff_jitter', 0.0),
+        ('grpc.dns_resolver_backoff_min_seconds', 1),
+        ('grpc.dns_resolver_backoff_max_seconds', 5),
+    ]
+    
+    # Create channel with DNS resolution options
+    channel = grpc.insecure_channel(target, options=options)
     transport = transports.CloudTasksGrpcTransport(channel=channel)
     return tasks_v2.CloudTasksClient(transport=transport)