Add disk detection for Linux, add new RPC service GetDiskInfoService(), remove dummy HelloService()

pkg/server/rpc/diskinfo.go

@@ -0,0 +1,58 @@
+/*
+ * Minimalist Object 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 rpc
+
+import (
+	"net/http"
+	"os"
+
+	"github.com/minio/minio/pkg/iodine"
+	"github.com/minio/minio/pkg/utils/scsi"
+)
+
+// GetDiskInfoService disk info service
+type GetDiskInfoService struct{}
+
+// GetDiskInfoReply disk info reply for disk info service
+type GetDiskInfoReply struct {
+	Hostname       string                     `json:"hostname"`
+	Disks          []string                   `json:"disks"`
+	DiskAttributes map[string]scsi.Attributes `json:"disk-attrs"`
+}
+
+func setDiskInfoReply(sis *GetDiskInfoReply) error {
+	var err error
+	sis.Hostname, err = os.Hostname()
+	if err != nil {
+		return iodine.New(err, nil)
+	}
+	disks, err := scsi.GetDisks()
+	if err != nil {
+		return iodine.New(err, nil)
+	}
+	sis.DiskAttributes = make(map[string]scsi.Attributes)
+	for k, v := range disks {
+		sis.Disks = append(sis.Disks, k)
+		sis.DiskAttributes[k] = v
+	}
+	return nil
+}
+
+// Get method
+func (s *GetDiskInfoService) Get(r *http.Request, args *Args, reply *GetDiskInfoReply) error {
+	return setDiskInfoReply(reply)
+}