feat: Add autoscaled node pool upgrade strategy

Google APIs · copybara-github · commit f33842a86cfc · 2023-12-18T09:32:40.000-08:00
PiperOrigin-RevId: 591922529
diff --git a/google/container/v1beta1/cluster_service.proto b/google/container/v1beta1/cluster_service.proto
@@ -3761,10 +3761,17 @@ message BlueGreenSettings {
     optional google.protobuf.Duration batch_soak_duration = 3;
   }
 
+  // Autoscaled rollout policy uses cluster autoscaler during
+  // blue-green upgrades to scale both the green and blue pools.
+  message AutoscaledRolloutPolicy {}
+
   // The rollout policy controls the general rollout progress of blue-green.
   oneof rollout_policy {
     // Standard policy for the blue-green upgrade.
     StandardRolloutPolicy standard_rollout_policy = 1;
+
+    // Autoscaled policy for cluster autoscaler enabled blue-green upgrade.
+    AutoscaledRolloutPolicy autoscaled_rollout_policy = 3;
   }
 
   // Time needed after draining entire blue pool. After this period, blue pool
