zones: introduce Zones.GetMachineByName()

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

pkg/zones/zones.go

@@ -53,6 +53,24 @@ func (m *Zones) ForEachZone(fn func(*Zone) bool) {
 	}
 }
 
+// GetMachineByName looks for a machine with the specified
+// name on any zone
+func (m *Zones) GetMachineByName(name string) (*Machine, bool) {
+	var out *Machine
+
+	if name != "" {
+		m.ForEachMachine(func(p *Machine) bool {
+			if p.Name == name {
+				out = p
+			}
+
+			return out != nil
+		})
+	}
+
+	return out, out != nil
+}
+
 // NewFS builds a [Zones] tree using the given directory
 func NewFS(dir fs.FS, domain string) (*Zones, error) {
 	lockuper := resolver.NewCloudflareLookuper()