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

pkg/server/rpc/sysinfo.go

@@ -0,0 +1,64 @@
+/*
+ * 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"
+	"runtime"
+
+	"github.com/minio/minio/pkg/iodine"
+)
+
+// GetSysInfoService -
+type GetSysInfoService struct{}
+
+// GetSysInfoReply -
+type GetSysInfoReply struct {
+	Hostname  string           `json:"hostname"`
+	SysARCH   string           `json:"sys.arch"`
+	SysOS     string           `json:"sys.os"`
+	SysCPUS   int              `json:"sys.ncpus"`
+	Routines  int              `json:"goroutines"`
+	GOVersion string           `json:"goversion"`
+	MemStats  runtime.MemStats `json:"memstats"`
+}
+
+func setSysInfoReply(sis *GetSysInfoReply) error {
+	sis.SysARCH = runtime.GOARCH
+	sis.SysOS = runtime.GOOS
+	sis.SysCPUS = runtime.NumCPU()
+	sis.Routines = runtime.NumGoroutine()
+	sis.GOVersion = runtime.Version()
+
+	var err error
+	sis.Hostname, err = os.Hostname()
+	if err != nil {
+		return iodine.New(err, nil)
+	}
+
+	var memStats runtime.MemStats
+	runtime.ReadMemStats(&memStats)
+	sis.MemStats = memStats
+
+	return nil
+}
+
+// Get method
+func (s *GetSysInfoService) Get(r *http.Request, args *Args, reply *GetSysInfoReply) error {
+	return setSysInfoReply(reply)
+}