fix(s3): lifecycle TTL rules inherit replication and volumeGrowthCount from filer config (#8321)

* fix(s3): lifecycle TTL rules inherit replication from parent path and filer config

PutBucketLifecycleConfiguration wrote filer.conf entries with empty replication,
so effective replication could differ from operator default. Now we resolve
replication from parent path rule (MatchStorageRule) then filer global config;
only Replication is set on the rule (no DataCenter/Rack/DataNode for S3).

* add volumeGrowthCount

* review

---------

Co-authored-by: Dmitiy Gushchin <dag@fivegen.ru>

weed/s3api/s3api_bucket_handlers_lifecycle_test.go

@@ -0,0 +1,80 @@
+package s3api
+
+import (
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/weed/filer"
+	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestResolveLifecycleDefaultsFromFilerConf(t *testing.T) {
+	// Precedence: global (lowest), then path rules top-down (parent overrides global), then query (highest).
+	// So parent path rule has priority over filer global config.
+
+	t.Run("parent_rule_replication_takes_precedence_over_filer_config", func(t *testing.T) {
+		fc := filer.NewFilerConf()
+		fc.SetLocationConf(&filer_pb.FilerConf_PathConf{
+			LocationPrefix: "/buckets/",
+			Replication:    "001",
+		})
+		repl, vgc, err := resolveLifecycleDefaultsFromFilerConf(fc, "010", "/buckets", "mybucket")
+		assert.NoError(t, err)
+		assert.Equal(t, "001", repl, "parent path rule must override filer global config")
+		assert.Equal(t, uint32(2), vgc, "volumeGrowthCount derived from replication 001 copy count (SameRackCount=1 -> 2 copies)")
+	})
+
+	t.Run("falls_back_to_filer_config_when_parent_rule_replication_empty", func(t *testing.T) {
+		fc := filer.NewFilerConf()
+		fc.SetLocationConf(&filer_pb.FilerConf_PathConf{
+			LocationPrefix: "/buckets/",
+			Replication:    "", // no replication on parent
+		})
+		repl, vgc, err := resolveLifecycleDefaultsFromFilerConf(fc, "010", "/buckets", "mybucket")
+		assert.NoError(t, err)
+		assert.Equal(t, "010", repl, "replication should come from filer config when parent rule has none")
+		assert.Equal(t, uint32(2), vgc, "volumeGrowthCount derived from replication 010 copy count")
+	})
+
+	t.Run("parent_rule_empty_when_no_matching_prefix_uses_filer_config", func(t *testing.T) {
+		fc := filer.NewFilerConf()
+		// no rules; parent path /buckets/mybucket/ matches nothing
+		repl, vgc, err := resolveLifecycleDefaultsFromFilerConf(fc, "010", "/buckets", "mybucket")
+		assert.NoError(t, err)
+		assert.Equal(t, "010", repl, "when no path rule, use filer config replication")
+		assert.Equal(t, uint32(2), vgc, "volumeGrowthCount derived from replication 010")
+	})
+
+	t.Run("all_empty_when_no_parent_rule_and_no_filer_config", func(t *testing.T) {
+		fc := filer.NewFilerConf()
+		repl, vgc, err := resolveLifecycleDefaultsFromFilerConf(fc, "", "/buckets", "mybucket")
+		assert.NoError(t, err)
+		assert.Empty(t, repl)
+		assert.Equal(t, uint32(0), vgc)
+	})
+
+	t.Run("parent_rule_volume_growth_count_used_when_set", func(t *testing.T) {
+		fc := filer.NewFilerConf()
+		fc.SetLocationConf(&filer_pb.FilerConf_PathConf{
+			LocationPrefix:    "/buckets/",
+			Replication:       "010",
+			VolumeGrowthCount: 4,
+		})
+		repl, vgc, err := resolveLifecycleDefaultsFromFilerConf(fc, "010", "/buckets", "mybucket")
+		assert.NoError(t, err)
+		assert.Equal(t, "010", repl)
+		assert.Equal(t, uint32(4), vgc, "parent VolumeGrowthCount must be used when set")
+	})
+
+	t.Run("invalid_replication_returns_error", func(t *testing.T) {
+		fc := filer.NewFilerConf()
+		fc.SetLocationConf(&filer_pb.FilerConf_PathConf{
+			LocationPrefix: "/buckets/",
+			Replication:    "0x1", // invalid: non-digit
+		})
+		repl, vgc, err := resolveLifecycleDefaultsFromFilerConf(fc, "", "/buckets", "mybucket")
+		assert.Error(t, err)
+		assert.Equal(t, "0x1", repl, "replication string is still returned")
+		assert.Equal(t, uint32(0), vgc, "volumeGrowthCount remains 0 when parse fails")
+	})
+}