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149 lines
4.5 KiB
149 lines
4.5 KiB
/*
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* Minio Cloud Storage, (C) 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package madmin
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import (
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"encoding/json"
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"io/ioutil"
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"net/http"
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"net/url"
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"time"
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)
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// BackendType - represents different backend types.
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type BackendType int
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// Enum for different backend types.
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const (
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Unknown BackendType = iota
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// Filesystem backend.
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FS
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// Multi disk Erasure (single, distributed) backend.
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Erasure
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// Add your own backend.
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)
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// StorageInfo - represents total capacity of underlying storage.
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type StorageInfo struct {
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// Total disk space.
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Total int64
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// Free available disk space.
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Free int64
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// Backend type.
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Backend struct {
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// Represents various backend types, currently on FS and Erasure.
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Type BackendType
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// Following fields are only meaningful if BackendType is Erasure.
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OnlineDisks int // Online disks during server startup.
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OfflineDisks int // Offline disks during server startup.
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StandardSCParity int // Parity disks for currently configured Standard storage class.
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RRSCParity int // Parity disks for currently configured Reduced Redundancy storage class.
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}
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}
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// ServerProperties holds some of the server's information such as uptime,
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// version, region, ..
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type ServerProperties struct {
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Uptime time.Duration `json:"uptime"`
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Version string `json:"version"`
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CommitID string `json:"commitID"`
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Region string `json:"region"`
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SQSARN []string `json:"sqsARN"`
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}
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// ServerConnStats holds network information
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type ServerConnStats struct {
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TotalInputBytes uint64 `json:"transferred"`
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TotalOutputBytes uint64 `json:"received"`
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}
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// ServerHTTPMethodStats holds total number of HTTP operations from/to the server,
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// including the average duration the call was spent.
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type ServerHTTPMethodStats struct {
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Count uint64 `json:"count"`
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AvgDuration string `json:"avgDuration"`
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}
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// ServerHTTPStats holds all type of http operations performed to/from the server
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// including their average execution time.
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type ServerHTTPStats struct {
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TotalHEADStats ServerHTTPMethodStats `json:"totalHEADs"`
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SuccessHEADStats ServerHTTPMethodStats `json:"successHEADs"`
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TotalGETStats ServerHTTPMethodStats `json:"totalGETs"`
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SuccessGETStats ServerHTTPMethodStats `json:"successGETs"`
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TotalPUTStats ServerHTTPMethodStats `json:"totalPUTs"`
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SuccessPUTStats ServerHTTPMethodStats `json:"successPUTs"`
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TotalPOSTStats ServerHTTPMethodStats `json:"totalPOSTs"`
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SuccessPOSTStats ServerHTTPMethodStats `json:"successPOSTs"`
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TotalDELETEStats ServerHTTPMethodStats `json:"totalDELETEs"`
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SuccessDELETEStats ServerHTTPMethodStats `json:"successDELETEs"`
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}
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// ServerInfoData holds storage, connections and other
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// information of a given server
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type ServerInfoData struct {
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StorageInfo StorageInfo `json:"storage"`
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ConnStats ServerConnStats `json:"network"`
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HTTPStats ServerHTTPStats `json:"http"`
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Properties ServerProperties `json:"server"`
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}
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// ServerInfo holds server information result of one node
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type ServerInfo struct {
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Error string `json:"error"`
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Addr string `json:"addr"`
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Data *ServerInfoData `json:"data"`
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}
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// ServerInfo - Connect to a minio server and call Server Info Management API
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// to fetch server's information represented by ServerInfo structure
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func (adm *AdminClient) ServerInfo() ([]ServerInfo, error) {
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// Prepare web service request
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reqData := requestData{}
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reqData.queryValues = make(url.Values)
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reqData.queryValues.Set("info", "")
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reqData.customHeaders = make(http.Header)
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resp, err := adm.executeMethod("GET", reqData)
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defer closeResponse(resp)
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if err != nil {
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return nil, err
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}
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// Check response http status code
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if resp.StatusCode != http.StatusOK {
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return nil, httpRespToErrorResponse(resp)
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}
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// Unmarshal the server's json response
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var serversInfo []ServerInfo
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respBytes, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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err = json.Unmarshal(respBytes, &serversInfo)
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if err != nil {
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return nil, err
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}
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return serversInfo, nil
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}
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