✨ feat: add Go Kubernetes operator

2026-09-13 10:49:21 +00:00 · 2026-08-13 02:19:14 +07:00
parent 31a2b8ef28
commit da6eafcae6
30 changed files with 3066 additions and 0 deletions
@@ -0,0 +1,154 @@
+package resources
+
+import (
+	"testing"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	v1alpha1 "github.com/YuzuZensai/Minikura/operator/api/v1alpha1"
+)
+
+func testServer() *v1alpha1.MinecraftServer {
+	return &v1alpha1.MinecraftServer{
+		ObjectMeta: metav1.ObjectMeta{Name: "smp", Namespace: "minikura"},
+		Spec: v1alpha1.MinecraftServerSpec{
+			Type:             v1alpha1.ServerStateful,
+			ListenPort:       25565,
+			ServiceType:      v1alpha1.ExposureClusterIP,
+			JarType:          "PAPER",
+			MinecraftVersion: "1.20.4",
+			StorageSize:      "10Gi",
+			Resources:        v1alpha1.Resources{MemoryLimitMB: 4096},
+		},
+	}
+}
+
+func envValue(env []corev1.EnvVar, name string) (string, bool) {
+	for i := len(env) - 1; i >= 0; i-- {
+		if env[i].Name == name {
+			return env[i].Value, true
+		}
+	}
+	return "", false
+}
+
+func TestMinecraftEnvCarriesSpecConfig(t *testing.T) {
+	mc := testServer()
+	mc.Spec.Properties = v1alpha1.MinecraftProperties{
+		Difficulty: "HARD",
+		GameMode:   "SURVIVAL",
+		MaxPlayers: 50,
+		MOTD:       "welcome",
+	}
+
+	env := minecraftEnv(mc)
+
+	for _, want := range []struct{ key, value string }{
+		{"TYPE", "PAPER"},
+		{"VERSION", "1.20.4"},
+		{"DIFFICULTY", "HARD"},
+		{"MAX_PLAYERS", "50"},
+		{"MOTD", "welcome"},
+	} {
+		got, ok := envValue(env, want.key)
+		if !ok {
+			t.Errorf("%s missing from env", want.key)
+			continue
+		}
+		if got != want.value {
+			t.Errorf("%s = %q, want %q", want.key, got, want.value)
+		}
+	}
+}
+
+func TestOptionalPropertiesOmitted(t *testing.T) {
+	env := minecraftEnv(testServer())
+	for _, key := range []string{"MOTD", "SEED", "LEVEL_TYPE"} {
+		if _, ok := envValue(env, key); ok {
+			t.Errorf("%s should be omitted when unset", key)
+		}
+	}
+}
+
+func TestServiceNodePortPinned(t *testing.T) {
+	mc := testServer()
+	mc.Spec.ServiceType = v1alpha1.ExposureNodePort
+	mc.Spec.NodePort = 30123
+
+	svc := MinecraftService(mc)
+	if svc.Spec.Type != corev1.ServiceTypeNodePort {
+		t.Fatalf("type = %v, want NodePort", svc.Spec.Type)
+	}
+	if svc.Spec.Ports[0].NodePort != 30123 {
+		t.Errorf("nodePort = %d, want 30123", svc.Spec.Ports[0].NodePort)
+	}
+}
+
+func TestServiceNodePortUnsetLeavesAllocation(t *testing.T) {
+	mc := testServer()
+	mc.Spec.ServiceType = v1alpha1.ExposureNodePort
+
+	svc := MinecraftService(mc)
+	if svc.Spec.Ports[0].NodePort != 0 {
+		t.Errorf("nodePort = %d, want 0 so the API server allocates one", svc.Spec.Ports[0].NodePort)
+	}
+}
+
+func TestSelectorExcludesMutableLabels(t *testing.T) {
+	mc := testServer()
+	sts, err := MinecraftStatefulSet(mc)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	selector := sts.Spec.Selector.MatchLabels
+	if _, ok := selector[v1alpha1.LabelServerType]; ok {
+		t.Error("selector must not include the mutable server-type label")
+	}
+	if selector["app"] != ServerName(mc.Name) {
+		t.Errorf("selector app = %q, want %q", selector["app"], ServerName(mc.Name))
+	}
+
+	for k, v := range selector {
+		if sts.Spec.Template.Labels[k] != v {
+			t.Errorf("pod template missing selector label %s=%s", k, v)
+		}
+	}
+}
+
+func TestStatefulSetStorage(t *testing.T) {
+	sts, err := MinecraftStatefulSet(testServer())
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	claims := sts.Spec.VolumeClaimTemplates
+	if len(claims) != 1 {
+		t.Fatalf("volumeClaimTemplates = %d, want 1", len(claims))
+	}
+	if got := claims[0].Spec.Resources.Requests.Storage().String(); got != "10Gi" {
+		t.Errorf("storage = %s, want 10Gi", got)
+	}
+}
+
+func TestStatefulSetRejectsBadStorageSize(t *testing.T) {
+	mc := testServer()
+	mc.Spec.StorageSize = "ten-gigs"
+
+	if _, err := MinecraftStatefulSet(mc); err == nil {
+		t.Error("expected an error for an unparseable storageSize")
+	}
+}
+
+func TestStatelessHasNoDataVolume(t *testing.T) {
+	mc := testServer()
+	mc.Spec.Type = v1alpha1.ServerStateless
+
+	dep := MinecraftDeployment(mc)
+	for _, m := range dep.Spec.Template.Spec.Containers[0].VolumeMounts {
+		if m.Name == "data" {
+			t.Error("stateless server should not mount a data volume")
+		}
+	}
+}