From c85f9d682ce774af1717775f0a2c4f09e4299708 Mon Sep 17 00:00:00 2001
From: Grayson Guarino <graysonguarino@gmail.com>
Date: Tue, 25 Aug 2026 11:40:37 -0400
Subject: [PATCH] feat(control): add ZoneMemoryPressureChangedEvent

---
 protect/control/v1/common.proto  |  8 ++++++++
 protect/control/v1/control.proto | 14 ++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/protect/control/v1/common.proto b/protect/control/v1/common.proto
index 18ceb99..94d2355 100644
--- a/protect/control/v1/common.proto
+++ b/protect/control/v1/common.proto
@@ -827,6 +827,14 @@ message ZoneDiskStatus {
   bool delete = 6;
 }
 
+enum ZoneMemoryPressureState {
+  ZONE_MEMORY_PRESSURE_STATE_UNKNOWN = 0;
+  ZONE_MEMORY_PRESSURE_STATE_OK = 1;
+  ZONE_MEMORY_PRESSURE_STATE_SOFT = 2;
+  ZONE_MEMORY_PRESSURE_STATE_HARD = 3;
+  ZONE_MEMORY_PRESSURE_STATE_CRITICAL = 4;
+}
+
 message ZoneMountStatus {
   uint64 device_id = 1;
   string host_path = 2;
diff --git a/protect/control/v1/control.proto b/protect/control/v1/control.proto
index 783dcae..c69a86f 100644
--- a/protect/control/v1/control.proto
+++ b/protect/control/v1/control.proto
@@ -550,6 +550,7 @@ message WatchEventsReply {
     WorkloadChangedEvent workload_changed = 2;
     AdvertiseServiceEvent advertise_service = 3;
     UnadvertiseServiceEvent unadvertise_service = 4;
+    ZoneMemoryPressureChangedEvent zone_memory_pressure_changed = 5;
   }
 }
 
@@ -1004,3 +1005,16 @@ message ListObjectCapabilitiesRequest {}
 message ListObjectCapabilitiesReply {
   repeated ObjectCapabilityInfo object_capabilities = 1;
 }
+
+// Carries a guest NUMA node's memory-pressure state transition for a zone.
+message ZoneMemoryPressureChangedEvent {
+  string zone_id = 1;
+  uint32 nid = 2;
+  ZoneMemoryPressureState old_state = 3;
+  ZoneMemoryPressureState new_state = 4;
+  uint64 transition_timestamp = 5;
+  // Set only for kube-managed zones.
+  optional string namespace = 6;
+  optional string pod = 7;
+}
+