From a00ee1d8336be8e87535edc27387c6066aa2b574 Mon Sep 17 00:00:00 2001
From: Roman Hros <roman.hros@dnation.cloud>
Date: Fri, 19 Jul 2024 09:15:08 +0200
Subject: [PATCH] Add Openstack server hostId as k8s node label

Signed-off-by: Roman Hros <roman.hros@dnation.cloud>
---
 pkg/openstack/instances.go   | 10 ++++++++++
 pkg/openstack/instancesv2.go | 11 ++++++-----
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/pkg/openstack/instances.go b/pkg/openstack/instances.go
index f799c6137c..fdc0a70aab 100644
--- a/pkg/openstack/instances.go
+++ b/pkg/openstack/instances.go
@@ -60,6 +60,7 @@ const (
 	instanceShutoff       = "SHUTOFF"
 	RegionalProviderIDEnv = "OS_CCM_REGIONAL"
 	noSortPriority        = 0
+	LabelHostID           = "topology.openstack.org/host-id"
 )
 
 var _ cloudprovider.Instances = &Instances{}
@@ -441,6 +442,15 @@ func srvInstanceType(client *gophercloud.ServiceClient, srv *servers.Server) (st
 	return "", fmt.Errorf("flavor original_name/id not found")
 }
 
+func getAdditionalLabels(srv *servers.Server) map[string]string {
+	additionalLabels := map[string]string{}
+
+	// Add the host ID to the additional labels
+	additionalLabels[LabelHostID] = srv.HostID
+
+	return additionalLabels
+}
+
 func isValidLabelValue(v string) bool {
 	if errs := validation.IsValidLabelValue(v); len(errs) != 0 {
 		return false
diff --git a/pkg/openstack/instancesv2.go b/pkg/openstack/instancesv2.go
index c27c7a6ce3..a29eb0cba2 100644
--- a/pkg/openstack/instancesv2.go
+++ b/pkg/openstack/instancesv2.go
@@ -134,11 +134,12 @@ func (i *InstancesV2) InstanceMetadata(ctx context.Context, node *v1.Node) (*clo
 	}
 
 	return &cloudprovider.InstanceMetadata{
-		ProviderID:    i.makeInstanceID(&server),
-		InstanceType:  instanceType,
-		NodeAddresses: addresses,
-		Zone:          server.AvailabilityZone,
-		Region:        i.region,
+		ProviderID:       i.makeInstanceID(&server),
+		InstanceType:     instanceType,
+		NodeAddresses:    addresses,
+		Zone:             server.AvailabilityZone,
+		Region:           i.region,
+		AdditionalLabels: getAdditionalLabels(&server),
 	}, nil
 }