xl: Moved to minio/minio - fixes #1112

pkg/xl/heal.go

@@ -0,0 +1,69 @@
+/*
+ * Minio Cloud Storage, (C) 2015 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 xl
+
+import (
+	"encoding/json"
+	"fmt"
+	"path/filepath"
+
+	"github.com/minio/minio/pkg/probe"
+	"github.com/minio/minio/pkg/xl/block"
+)
+
+// healBuckets heal bucket slices
+func (xl API) healBuckets() *probe.Error {
+	if err := xl.listXLBuckets(); err != nil {
+		return err.Trace()
+	}
+	bucketMetadata, err := xl.getXLBucketMetadata()
+	if err != nil {
+		return err.Trace()
+	}
+	disks := make(map[int]block.Block)
+	for _, node := range xl.nodes {
+		nDisks, err := node.ListDisks()
+		if err != nil {
+			return err.Trace()
+		}
+		for k, v := range nDisks {
+			disks[k] = v
+		}
+	}
+	for order, disk := range disks {
+		if disk.IsUsable() {
+			disk.MakeDir(xl.config.XLName)
+			bucketMetadataWriter, err := disk.CreateFile(filepath.Join(xl.config.XLName, bucketMetadataConfig))
+			if err != nil {
+				return err.Trace()
+			}
+			defer bucketMetadataWriter.Close()
+			jenc := json.NewEncoder(bucketMetadataWriter)
+			if err := jenc.Encode(bucketMetadata); err != nil {
+				return probe.NewError(err)
+			}
+			for bucket := range bucketMetadata.Buckets {
+				bucketSlice := fmt.Sprintf("%s$0$%d", bucket, order) // TODO handle node slices
+				err := disk.MakeDir(filepath.Join(xl.config.XLName, bucketSlice))
+				if err != nil {
+					return err.Trace()
+				}
+			}
+		}
+	}
+	return nil
+}