fix(operator): Allow structured metadata only if V13 schema provided

operator/internal/handlers/internal/storage/storage.go

@@ -45,8 +45,9 @@ func BuildOptions(ctx context.Context, k k8s.Client, stack *lokiv1.LokiStack, fg
 		}
 	}
 
+	now := time.Now().UTC()
 	storageSchemas, err := storage.BuildSchemaConfig(
-		time.Now().UTC(),
+		now,
 		stack.Spec.Storage,
 		stack.Status.Storage,
 	)
@@ -59,6 +60,7 @@ func BuildOptions(ctx context.Context, k k8s.Client, stack *lokiv1.LokiStack, fg
 	}
 
 	objStore.Schemas = storageSchemas
+	objStore.AllowStructuredMetadata = allowStructuredMetadata(storageSchemas, now)
 
 	if stack.Spec.Storage.TLS == nil {
 		return objStore, nil
@@ -98,3 +100,16 @@ func BuildOptions(ctx context.Context, k k8s.Client, stack *lokiv1.LokiStack, fg
 
 	return objStore, nil
 }
+
+func allowStructuredMetadata(schemas []lokiv1.ObjectStorageSchema, now time.Time) bool {
+	activeVersion := lokiv1.ObjectStorageSchemaV11
+	for _, s := range schemas {
+		time, _ := s.EffectiveDate.UTCTime()
+		if time.Before(now) {
+			activeVersion = s.Version
+		}
+	}
+
+	return activeVersion != lokiv1.ObjectStorageSchemaV11 &&
+		activeVersion != lokiv1.ObjectStorageSchemaV12
+}

operator/internal/handlers/internal/storage/storage_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 	corev1 "k8s.io/api/core/v1"
@@ -560,3 +561,124 @@ func TestBuildOptions_WhenInvalidCAConfigMap_SetDegraded(t *testing.T) {
 	require.Error(t, err)
 	require.Equal(t, degradedErr, err)
 }
+
+func TestAllowStructuredMetadata(t *testing.T) {
+	testTime := time.Date(2024, 7, 1, 1, 0, 0, 0, time.UTC)
+	tt := []struct {
+		desc      string
+		schemas   []lokiv1.ObjectStorageSchema
+		wantAllow bool
+	}{
+		{
+			desc:      "disallow - no schemas",
+			schemas:   []lokiv1.ObjectStorageSchema{},
+			wantAllow: false,
+		},
+		{
+			desc: "disallow - only v12",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV12,
+					EffectiveDate: "2024-07-01",
+				},
+			},
+			wantAllow: false,
+		},
+		{
+			desc: "allow - only v13",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-07-01",
+				},
+			},
+			wantAllow: true,
+		},
+		{
+			desc: "disallow - v13 in future",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV12,
+					EffectiveDate: "2024-07-01",
+				},
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-07-02",
+				},
+			},
+			wantAllow: false,
+		},
+		{
+			desc: "disallow - v13 in past",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-06-01",
+				},
+				{
+					Version:       lokiv1.ObjectStorageSchemaV12,
+					EffectiveDate: "2024-07-01",
+				},
+			},
+			wantAllow: false,
+		},
+		{
+			desc: "disallow - v13 in past and future",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-06-01",
+				},
+				{
+					Version:       lokiv1.ObjectStorageSchemaV12,
+					EffectiveDate: "2024-07-01",
+				},
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-07-02",
+				},
+			},
+			wantAllow: false,
+		},
+		{
+			desc: "allow - v13 active",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV12,
+					EffectiveDate: "2024-06-01",
+				},
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-07-01",
+				},
+			},
+			wantAllow: true,
+		},
+		{
+			desc: "allow - v13 active, v12 in future",
+			schemas: []lokiv1.ObjectStorageSchema{
+				{
+					Version:       lokiv1.ObjectStorageSchemaV13,
+					EffectiveDate: "2024-07-01",
+				},
+				{
+					Version:       lokiv1.ObjectStorageSchemaV12,
+					EffectiveDate: "2024-08-01",
+				},
+			},
+			wantAllow: true,
+		},
+	}
+
+	for _, tc := range tt {
+		tc := tc
+		t.Run(tc.desc, func(t *testing.T) {
+			t.Parallel()
+
+			allow := allowStructuredMetadata(tc.schemas, testTime)
+			if allow != tc.wantAllow {
+				t.Errorf("got %v, want %v", allow, tc.wantAllow)
+			}
+		})
+	}
+}