minio/pkg/madmin/service-commands.go
Aditya Manthramurthy a337ea4d11 Move admin APIs to new path and add redesigned heal APIs (#5351)
- Changes related to moving admin APIs
   - admin APIs now have an endpoint under /minio/admin
   - admin APIs are now versioned - a new API to server the version is
     added at "GET /minio/admin/version" and all API operations have the
     path prefix /minio/admin/v1/<operation>
   - new service stop API added
   - credentials change API is moved to /minio/admin/v1/config/credential
   - credentials change API and configuration get/set API now require TLS
     so that credentials are protected
   - all API requests now receive JSON
   - heal APIs are disabled as they will be changed substantially

- Heal API changes
   Heal API is now provided at a single endpoint with the ability for a
   client to start a heal sequence on all the data in the server, a
   single bucket, or under a prefix within a bucket.

   When a heal sequence is started, the server returns a unique token
   that needs to be used for subsequent 'status' requests to fetch heal
   results.

   On each status request from the client, the server returns heal result
   records that it has accumulated since the previous status request. The
   server accumulates upto 1000 records and pauses healing further
   objects until the client requests for status. If the client does not
   request any further records for a long time, the server aborts the
   heal sequence automatically.

   A heal result record is returned for each entity healed on the server,
   such as system metadata, object metadata, buckets and objects, and has
   information about the before and after states on each disk.

   A client may request to force restart a heal sequence - this causes
   the running heal sequence to be aborted at the next safe spot and
   starts a new heal sequence.
2018-01-22 14:54:55 -08:00

104 lines
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Go

/*
* Minio Cloud Storage, (C) 2016, 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 (
"bytes"
"encoding/json"
"io/ioutil"
"net/http"
"time"
)
// ServerVersion - server version
type ServerVersion struct {
Version string `json:"version"`
CommitID string `json:"commitID"`
}
// ServiceStatus - contains the response of service status API
type ServiceStatus struct {
ServerVersion ServerVersion `json:"serverVersion"`
Uptime time.Duration `json:"uptime"`
}
// ServiceStatus - Connect to a minio server and call Service Status
// Management API to fetch server's storage information represented by
// ServiceStatusMetadata structure
func (adm *AdminClient) ServiceStatus() (ss ServiceStatus, err error) {
// Request API to GET service status
resp, err := adm.executeMethod("GET", requestData{relPath: "/v1/service"})
defer closeResponse(resp)
if err != nil {
return ss, err
}
// Check response http status code
if resp.StatusCode != http.StatusOK {
return ss, httpRespToErrorResponse(resp)
}
respBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return ss, err
}
err = json.Unmarshal(respBytes, &ss)
return ss, err
}
// ServiceActionValue - type to restrict service-action values
type ServiceActionValue string
const (
// ServiceActionValueRestart represents restart action
ServiceActionValueRestart ServiceActionValue = "restart"
// ServiceActionValueStop represents stop action
ServiceActionValueStop = "stop"
)
// ServiceAction - represents POST body for service action APIs
type ServiceAction struct {
Action ServiceActionValue `json:"action"`
}
// ServiceSendAction - Call Service Restart/Stop API to restart/stop a
// Minio server
func (adm *AdminClient) ServiceSendAction(action ServiceActionValue) error {
body, err := json.Marshal(ServiceAction{action})
if err != nil {
return err
}
// Request API to Restart server
resp, err := adm.executeMethod("POST", requestData{
relPath: "/v1/service",
contentBody: bytes.NewReader(body),
contentSHA256Bytes: sum256(body),
})
defer closeResponse(resp)
if err != nil {
return err
}
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp)
}
return nil
}