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/*
* Minio Cloud Storage, (C) 2017, 2018 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"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"time"
)
// HealOpts - collection of options for a heal sequence
type HealOpts struct {
Recursive bool `json:"recursive"`
DryRun bool `json:"dryRun"`
}
// HealStartSuccess - holds information about a successfully started
// heal operation
type HealStartSuccess struct {
ClientToken string `json:"clientToken"`
ClientAddress string `json:"clientAddress"`
StartTime time.Time `json:"startTime"`
}
// HealStopSuccess - holds information about a successfully stopped
// heal operation.
type HealStopSuccess HealStartSuccess
// HealTaskStatus - status struct for a heal task
type HealTaskStatus struct {
Summary string `json:"summary"`
FailureDetail string `json:"detail"`
StartTime time.Time `json:"startTime"`
HealSettings HealOpts `json:"settings"`
NumDisks int `json:"numDisks"`
Items []HealResultItem `json:"items,omitempty"`
}
// HealItemType - specify the type of heal operation in a healing
// result
type HealItemType string
// HealItemType constants
const (
HealItemMetadata HealItemType = "metadata"
HealItemBucket = "bucket"
HealItemBucketMetadata = "bucket-metadata"
HealItemObject = "object"
)
// Drive state constants
const (
DriveStateOk string = "ok"
DriveStateOffline = "offline"
DriveStateCorrupt = "corrupt"
DriveStateMissing = "missing"
)
// HealDriveInfo - struct for an individual drive info item.
type HealDriveInfo struct {
UUID string `json:"uuid"`
Endpoint string `json:"endpoint"`
State string `json:"state"`
}
// HealResultItem - struct for an individual heal result item
type HealResultItem struct {
ResultIndex int64 `json:"resultId"`
Type HealItemType `json:"type"`
Bucket string `json:"bucket"`
Object string `json:"object"`
Detail string `json:"detail"`
ParityBlocks int `json:"parityBlocks,omitempty"`
DataBlocks int `json:"dataBlocks,omitempty"`
DiskCount int `json:"diskCount"`
SetCount int `json:"setCount"`
// below slices are from drive info.
Before struct {
Drives []HealDriveInfo `json:"drives"`
} `json:"before"`
After struct {
Drives []HealDriveInfo `json:"drives"`
} `json:"after"`
ObjectSize int64 `json:"objectSize"`
}
// GetMissingCounts - returns the number of missing disks before
// and after heal
func (hri *HealResultItem) GetMissingCounts() (b, a int) {
if hri == nil {
return
}
for _, v := range hri.Before.Drives {
if v.State == DriveStateMissing {
b++
}
}
for _, v := range hri.After.Drives {
if v.State == DriveStateMissing {
a++
}
}
return
}
// GetOfflineCounts - returns the number of offline disks before
// and after heal
func (hri *HealResultItem) GetOfflineCounts() (b, a int) {
if hri == nil {
return
}
for _, v := range hri.Before.Drives {
if v.State == DriveStateOffline {
b++
}
}
for _, v := range hri.After.Drives {
if v.State == DriveStateOffline {
a++
}
}
}
// GetCorruptedCounts - returns the number of corrupted disks before
// and after heal
func (hri *HealResultItem) GetCorruptedCounts() (b, a int) {
if hri == nil {
return
}
for _, v := range hri.Before.Drives {
if v.State == DriveStateCorrupt {
b++
}
}
for _, v := range hri.After.Drives {
if v.State == DriveStateCorrupt {
a++
}
}
return
}
// GetOnlineCounts - returns the number of online disks before
// and after heal
func (hri *HealResultItem) GetOnlineCounts() (b, a int) {
if hri == nil {
return
}
for _, v := range hri.Before.Drives {
if v.State == DriveStateOk {
b++
}
}
for _, v := range hri.After.Drives {
if v.State == DriveStateOk {
a++
}
}
return
}
// Heal - API endpoint to start heal and to fetch status
// forceStart and forceStop are mutually exclusive, you can either
// set one of them to 'true'. If both are set 'forceStart' will be
// honored.
func (adm *AdminClient) Heal(bucket, prefix string, healOpts HealOpts,
clientToken string, forceStart, forceStop bool) (
healStart HealStartSuccess, healTaskStatus HealTaskStatus, err error) {
if forceStart && forceStop {
return healStart, healTaskStatus, ErrInvalidArgument("forceStart and forceStop set to true is not allowed")
}
body, err := json.Marshal(healOpts)
if err != nil {
return healStart, healTaskStatus, err
}
path := fmt.Sprintf("/v1/heal/%s", bucket)
if bucket != "" && prefix != "" {
path += "/" + prefix
}
// execute POST request to heal api
queryVals := make(url.Values)
if clientToken != "" {
queryVals.Set("clientToken", clientToken)
body = []byte{}
}
// Anyone can be set, either force start or forceStop.
if forceStart {
queryVals.Set("forceStart", "true")
} else if forceStop {
queryVals.Set("forceStop", "true")
}
resp, err := adm.executeMethod("POST", requestData{
relPath: path,
content: body,
queryValues: queryVals,
})
defer closeResponse(resp)
if err != nil {
return healStart, healTaskStatus, err
}
if resp.StatusCode != http.StatusOK {
return healStart, healTaskStatus, httpRespToErrorResponse(resp)
}
respBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return healStart, healTaskStatus, err
}
// Was it a status request?
if clientToken == "" {
// As a special operation forceStop would return a
// similar struct as healStart will have the
// heal sequence information about the heal which
// was stopped.
err = json.Unmarshal(respBytes, &healStart)
} else {
err = json.Unmarshal(respBytes, &healTaskStatus)
}
if err != nil {
// May be the server responded with error after success
// message, handle it separately here.
var errResp ErrorResponse
err = json.Unmarshal(respBytes, &errResp)
if err != nil {
// Unknown structure return error anyways.
return healStart, healTaskStatus, err
}
return healStart, healTaskStatus, errResp
}
return healStart, healTaskStatus, nil
}