Support bucket versioning (#9377)

- Implement a new xl.json 2.0.0 format to support,
  this moves the entire marshaling logic to POSIX
  layer, top layer always consumes a common FileInfo
  construct which simplifies the metadata reads.
- Implement list object versions
- Migrate to siphash from crchash for new deployments
  for object placements.

Fixes #2111

cmd/erasure-list-objects.go

@@ -0,0 +1,58 @@
+/*
+ * MinIO Cloud Storage, (C) 2016-2020 MinIO, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"context"
+
+	"github.com/minio/minio/pkg/madmin"
+)
+
+// ListObjectVersions - This is not implemented, look for erasure-zones.ListObjectVersions()
+func (er erasureObjects) ListObjectVersions(ctx context.Context, bucket, prefix, marker, versionMarker, delimiter string, maxKeys int) (loi ListObjectVersionsInfo, e error) {
+	return loi, NotImplemented{}
+}
+
+// ListObjectsV2 - This is not implemented/needed anymore, look for erasure-zones.ListObjectsV2()
+func (er erasureObjects) ListObjectsV2(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (loi ListObjectsV2Info, e error) {
+	return loi, NotImplemented{}
+}
+
+// ListObjects - This is not implemented/needed anymore, look for erasure-zones.ListObjects()
+func (er erasureObjects) ListObjects(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (loi ListObjectsInfo, e error) {
+	return loi, NotImplemented{}
+}
+
+// ListBucketsHeal - This is not implemented/needed anymore, look for erasure-zones.ListBucketHeal()
+func (er erasureObjects) ListBucketsHeal(ctx context.Context) ([]BucketInfo, error) {
+	return nil, NotImplemented{}
+}
+
+// ListObjectsHeal - This is not implemented, look for erasure-zones.ListObjectsHeal()
+func (er erasureObjects) ListObjectsHeal(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (loi ListObjectsInfo, err error) {
+	return ListObjectsInfo{}, NotImplemented{}
+}
+
+// HealObjects - This is not implemented/needed anymore, look for erasure-zones.HealObjects()
+func (er erasureObjects) HealObjects(ctx context.Context, bucket, prefix string, _ madmin.HealOpts, _ HealObjectFn) (e error) {
+	return NotImplemented{}
+}
+
+// Walk - This is not implemented/needed anymore, look for erasure-zones.Walk()
+func (er erasureObjects) Walk(ctx context.Context, bucket, prefix string, results chan<- ObjectInfo) error {
+	return NotImplemented{}
+}