🐛 fix: harden operator reconciliation and install

operator/internal/resources/naming.go

@@ -1,23 +1,39 @@
 package resources
 
 import (
+	"crypto/sha256"
 	"fmt"
 	"strings"
 
 	v1alpha1 "github.com/YuzuZensai/Minikura/operator/api/v1alpha1"
 )
 
-func ServerName(name string) string { return fmt.Sprintf("minecraft-%s", name) }
+const dnsLabelMaxLength = 63
+
+func ServerName(name string) string { return limitedName("minecraft-"+name, dnsLabelMaxLength) }
 func ProxyName(kind v1alpha1.ProxyKind, name string) string {
-	return fmt.Sprintf("%s-%s", strings.ToLower(string(kind)), name)
+	return limitedName(fmt.Sprintf("%s-%s", strings.ToLower(string(kind)), name), dnsLabelMaxLength)
+}
+func ConfigMapName(base string) string { return limitedName(base+"-config", dnsLabelMaxLength) }
+
+func limitedName(name string, limit int) string {
+	if len(name) <= limit {
+		return name
+	}
+	sum := sha256.Sum256([]byte(name))
+	suffix := fmt.Sprintf("-%x", sum[:4])
+	return strings.TrimRight(name[:limit-len(suffix)], "-") + suffix
+}
+
+func labelValue(value string) string {
+	return limitedName(value, dnsLabelMaxLength)
 }
-func ConfigMapName(base string) string { return base + "-config" }
 
 func ServerLabels(mc *v1alpha1.MinecraftServer) map[string]string {
 	return map[string]string{
 		"app":                    ServerName(mc.Name),
 		v1alpha1.LabelServerType: strings.ToLower(string(mc.Spec.Type)),
-		v1alpha1.LabelServerID:   mc.Name,
+		v1alpha1.LabelServerID:   labelValue(mc.Name),
 		v1alpha1.LabelManagedBy:  v1alpha1.ManagerName,
 	}
 }
@@ -26,7 +42,7 @@ func ProxyLabels(rp *v1alpha1.ReverseProxyServer) map[string]string {
 	return map[string]string{
 		"app":                    ProxyName(rp.Spec.Type, rp.Name),
 		v1alpha1.LabelServerType: strings.ToLower(string(rp.Spec.Type)),
-		v1alpha1.LabelProxyID:    rp.Name,
+		v1alpha1.LabelProxyID:    labelValue(rp.Name),
 		v1alpha1.LabelManagedBy:  v1alpha1.ManagerName,
 	}
 }