Import ExtraMounts to keystone-operator

This patch introduces the extraMounts feature and the Propagation keys
provided by storage. The purpose is to allow entities to provide files
(via Secrets, ConfigMaps, regular PVCs and so forth) to the KeystoneAPI
pods via the existing Volume/VolumeMounts interface.

Signed-off-by: Francesco Pantano <fpantano@redhat.com>

Author: fmount

api/bases/keystone.openstack.org_keystoneapis.yaml

@@ -10,6 +10,7 @@ require (
 	github.com/openstack-k8s-operators/infra-operator/apis v0.6.1-0.20250328101744-699b0b8f418d
 	github.com/openstack-k8s-operators/lib-common/modules/common v0.6.1-0.20250324161140-e9964a1b2266
 	github.com/openstack-k8s-operators/lib-common/modules/openstack v0.6.1-0.20250324161140-e9964a1b2266
+	github.com/openstack-k8s-operators/lib-common/modules/storage v0.6.1-0.20250402133843-5a4c5f4fb4f1
 	github.com/openstack-k8s-operators/lib-common/modules/test v0.6.1-0.20250324161140-e9964a1b2266
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56
 	k8s.io/api v0.29.15

api/go.mod

@@ -86,6 +86,8 @@ github.com/openstack-k8s-operators/lib-common/modules/common v0.6.1-0.2025032416
 github.com/openstack-k8s-operators/lib-common/modules/common v0.6.1-0.20250324161140-e9964a1b2266/go.mod h1:1CtBP0MQffdjE6buOv5jP2rB3+h7WH0a11lcyrpmxOk=
 github.com/openstack-k8s-operators/lib-common/modules/openstack v0.6.1-0.20250324161140-e9964a1b2266 h1:YpJtUjf/CX48D1qteG33EQCe0o5wXae2FtSn/H/Mi28=
 github.com/openstack-k8s-operators/lib-common/modules/openstack v0.6.1-0.20250324161140-e9964a1b2266/go.mod h1:fesgTbs2j30Fhw2hebXkPgbeAIqG0Yk2oaeOklAInZg=
+github.com/openstack-k8s-operators/lib-common/modules/storage v0.6.1-0.20250402133843-5a4c5f4fb4f1 h1:KcltUDbUA0sjtf6bV60L7GDpC0pmokhtdK3579yytS4=
+github.com/openstack-k8s-operators/lib-common/modules/storage v0.6.1-0.20250402133843-5a4c5f4fb4f1/go.mod h1:5+v92XC/PRATIiBrhNLEpJ+T4R9JpxBCgRP6QvbfwgE=
 github.com/openstack-k8s-operators/lib-common/modules/test v0.6.1-0.20250324161140-e9964a1b2266 h1:TIkLc7L4NaByud0qnlVGouRgDoVQgwxufayPKduzcJ0=
 github.com/openstack-k8s-operators/lib-common/modules/test v0.6.1-0.20250324161140-e9964a1b2266/go.mod h1:oKvVb28i6wwBR5uQO2B2KMzZnCFTPCUCj31c5Zvz2lo=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=

api/go.sum

@@ -25,6 +25,7 @@ import (
 	"github.com/openstack-k8s-operators/lib-common/modules/common/service"
 	"github.com/openstack-k8s-operators/lib-common/modules/common/tls"
 	"github.com/openstack-k8s-operators/lib-common/modules/common/util"
+	"github.com/openstack-k8s-operators/lib-common/modules/storage"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -201,6 +202,10 @@ type KeystoneAPISpecCore struct {
 	// TopologyRef to apply the Topology defined by the associated CR referenced
 	// by name
 	TopologyRef *topologyv1.TopoRef `json:"topologyRef,omitempty"`
+
+	// ExtraMounts containing conf files
+	// +kubebuilder:default={}
+	ExtraMounts []KeystoneExtraMounts `json:"extraMounts,omitempty"`
 }
 
 // APIOverrideSpec to override the generated manifest of several child resources.
@@ -334,6 +339,27 @@ func SetupDefaults() {
 	SetupKeystoneAPIDefaults(keystoneDefaults)
 }
 
+// KeystoneExtraVolMounts exposes additional parameters processed by keystone-operator
+// and defines the common VolMounts structure provided by the main storage module
+type KeystoneExtraMounts struct {
+	// +kubebuilder:validation:Optional
+	Name string `json:"name,omitempty"`
+	// +kubebuilder:validation:Optional
+	Region string `json:"region,omitempty"`
+	// +kubebuilder:validation:Required
+	VolMounts []storage.VolMounts `json:"extraVol"`
+}
+
+// Propagate is a function used to filter VolMounts according to the specified
+// PropagationType array
+func (c *KeystoneExtraMounts) Propagate(svc []storage.PropagationType) []storage.VolMounts {
+	var vl []storage.VolMounts
+	for _, gv := range c.VolMounts {
+		vl = append(vl, gv.Propagate(svc)...)
+	}
+	return vl
+}
+
 // GetLastTopologyRef - Returns a TopoRef object that can be passed to the
 // Handle topology logic
 func (instance KeystoneAPI) GetLastAppliedTopologyRef() *topologyv1.TopoRef {