ServerInfo() will gather information from all nodes before returning it back to the client.
127 lines
3.4 KiB
Go
127 lines
3.4 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2017 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 madmin
|
|
|
|
import (
|
|
"encoding/json"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"net/url"
|
|
"time"
|
|
)
|
|
|
|
// BackendType - represents different backend types.
|
|
type BackendType int
|
|
|
|
// Enum for different backend types.
|
|
const (
|
|
Unknown BackendType = iota
|
|
// Filesystem backend.
|
|
FS
|
|
// Multi disk Erasure (single, distributed) backend.
|
|
Erasure
|
|
|
|
// Add your own backend.
|
|
)
|
|
|
|
// StorageInfo - represents total capacity of underlying storage.
|
|
type StorageInfo struct {
|
|
// Total disk space.
|
|
Total int64
|
|
// Free available disk space.
|
|
Free int64
|
|
// Backend type.
|
|
Backend struct {
|
|
// Represents various backend types, currently on FS and Erasure.
|
|
Type BackendType
|
|
|
|
// Following fields are only meaningful if BackendType is Erasure.
|
|
OnlineDisks int // Online disks during server startup.
|
|
OfflineDisks int // Offline disks during server startup.
|
|
ReadQuorum int // Minimum disks required for successful read operations.
|
|
WriteQuorum int // Minimum disks required for successful write operations.
|
|
}
|
|
}
|
|
|
|
// ServerProperties holds some of the server's information such as uptime,
|
|
// version, region, ..
|
|
type ServerProperties struct {
|
|
Uptime time.Duration `json:"uptime"`
|
|
Version string `json:"version"`
|
|
CommitID string `json:"commitID"`
|
|
Region string `json:"region"`
|
|
SQSARN []string `json:"sqsARN"`
|
|
}
|
|
|
|
// ServerConnStats holds network information
|
|
type ServerConnStats struct {
|
|
TotalInputBytes uint64 `json:"transferred"`
|
|
TotalOutputBytes uint64 `json:"received"`
|
|
}
|
|
|
|
// ServerInfoData holds storage, connections and other
|
|
// information of a given server
|
|
type ServerInfoData struct {
|
|
StorageInfo StorageInfo `json:"storage"`
|
|
ConnStats ServerConnStats `json:"network"`
|
|
Properties ServerProperties `json:"server"`
|
|
}
|
|
|
|
// ServerInfo holds server information result of one node
|
|
type ServerInfo struct {
|
|
Error error `json:"error"`
|
|
Addr string `json:"addr"`
|
|
Data *ServerInfoData `json:"data"`
|
|
}
|
|
|
|
// ServerInfo - Connect to a minio server and call Server Info Management API
|
|
// to fetch server's information represented by ServerInfo structure
|
|
func (adm *AdminClient) ServerInfo() ([]ServerInfo, error) {
|
|
// Prepare web service request
|
|
reqData := requestData{}
|
|
reqData.queryValues = make(url.Values)
|
|
reqData.queryValues.Set("info", "")
|
|
reqData.customHeaders = make(http.Header)
|
|
|
|
resp, err := adm.executeMethod("GET", reqData)
|
|
defer closeResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Check response http status code
|
|
if resp.StatusCode != http.StatusOK {
|
|
return nil, httpRespToErrorResponse(resp)
|
|
}
|
|
|
|
// Unmarshal the server's json response
|
|
var serversInfo []ServerInfo
|
|
|
|
respBytes, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = json.Unmarshal(respBytes, &serversInfo)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return serversInfo, nil
|
|
}
|