zones: introduce Zones.CephFSID and Zones.GetCephFSID()

the accessor doesn't generate one if needed yet

Signed-off-by: Alejandro Mery <amery@jpi.io>

pkg/zones/ceph.go

@@ -0,0 +1,15 @@
+package zones
+
+import (
+	"darvaza.org/core"
+	"github.com/gofrs/uuid/v5"
+)
+
+// GetCephFSID returns our Ceph's FSID
+func (m *Zones) GetCephFSID() (uuid.UUID, error) {
+	if core.IsZero(m.CephFSID) {
+		// TODO: generate one
+		return uuid.Nil, nil
+	}
+	return m.CephFSID, nil
+}

pkg/zones/zones.go

@@ -6,6 +6,7 @@ import (
 	"sort"
 
 	"darvaza.org/resolver"
+	"github.com/gofrs/uuid/v5"
 )
 
 var (
@@ -135,15 +136,21 @@ func (z *Zone) GatewayIDs() ([]int, int) {
 	return out, len(out)
 }
 
+// revive:disable:line-length-limit
+
 // Zones represents all zones in a cluster
 type Zones struct {
 	dir      fs.FS
 	resolver resolver.Resolver
 	domain   string
 
+	CephFSID uuid.UUID `toml:"ceph_fsid,omitempty" json:"ceph_fsid,omitempty" yaml:"ceph_fsid,omitempty"`
+
 	Zones []*Zone `toml:"zones"`
 }
 
+// revive:enable:line-length-limit
+
 // ForEachMachine calls a function for each Machine in the cluster
 // until instructed to terminate the loop
 func (m *Zones) ForEachMachine(fn func(*Machine) bool) {