xl: Moved to minio/minio - fixes #1112

pkg/xl/management.go

@@ -0,0 +1,81 @@
+/*
+ * 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 (
+	"github.com/minio/minio/pkg/probe"
+	"github.com/minio/minio/pkg/xl/block"
+)
+
+// Info - return info about xl configuration
+func (xl API) Info() (nodeDiskMap map[string][]string, err *probe.Error) {
+	nodeDiskMap = make(map[string][]string)
+	for nodeName, n := range xl.nodes {
+		disks, err := n.ListDisks()
+		if err != nil {
+			return nil, err.Trace()
+		}
+		diskList := make([]string, len(disks))
+		for diskOrder, disk := range disks {
+			diskList[diskOrder] = disk.GetPath()
+		}
+		nodeDiskMap[nodeName] = diskList
+	}
+	return nodeDiskMap, nil
+}
+
+// AttachNode - attach node
+func (xl API) AttachNode(hostname string, disks []string) *probe.Error {
+	if hostname == "" || len(disks) == 0 {
+		return probe.NewError(InvalidArgument{})
+	}
+	n, err := newNode(hostname)
+	if err != nil {
+		return err.Trace()
+	}
+	xl.nodes[hostname] = n
+	for i, d := range disks {
+		newDisk, err := block.New(d)
+		if err != nil {
+			continue
+		}
+		if err := newDisk.MakeDir(xl.config.XLName); err != nil {
+			return err.Trace()
+		}
+		if err := n.AttachDisk(newDisk, i); err != nil {
+			return err.Trace()
+		}
+	}
+	return nil
+}
+
+// DetachNode - detach node
+func (xl API) DetachNode(hostname string) *probe.Error {
+	delete(xl.nodes, hostname)
+	return nil
+}
+
+// Rebalance - rebalance an existing xl with new disks and nodes
+func (xl API) Rebalance() *probe.Error {
+	return probe.NewError(APINotImplemented{API: "management.Rebalance"})
+}
+
+// Heal - heal your xls
+func (xl API) Heal() *probe.Error {
+	// TODO handle data heal
+	return xl.healBuckets()
+}