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/*
* 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"
"encoding/xml"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"time"
)
const (
maxUploadsList = 1000
)
// listBucketHealResult container for listObjects response.
type listBucketHealResult struct {
// A response can contain CommonPrefixes only if you have
// specified a delimiter.
CommonPrefixes []commonPrefix
// Metadata about each object returned.
Contents []ObjectInfo
Delimiter string
// Encoding type used to encode object keys in the response.
EncodingType string
// A flag that indicates whether or not ListObjects returned all of the results
// that satisfied the search criteria.
IsTruncated bool
Marker string
MaxKeys int64
Name string
// When response is truncated (the IsTruncated element value in
// the response is true), you can use the key name in this field
// as marker in the subsequent request to get next set of objects.
// Object storage lists objects in alphabetical order Note: This
// element is returned only if you have delimiter request
// parameter specified. If response does not include the NextMaker
// and it is truncated, you can use the value of the last Key in
// the response as the marker in the subsequent request to get the
// next set of object keys.
NextMarker string
Prefix string
}
// commonPrefix container for prefix response.
type commonPrefix struct {
Prefix string
}
// Owner - bucket owner/principal
type Owner struct {
ID string
DisplayName string
}
// Bucket container for bucket metadata
type Bucket struct {
Name string
CreationDate string // time string of format "2006-01-02T15:04:05.000Z"
HealBucketInfo *HealBucketInfo `xml:"HealBucketInfo,omitempty"`
}
// ListBucketsHealResponse - format for list buckets response
type ListBucketsHealResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListAllMyBucketsResult" json:"-"`
Owner Owner
// Container for one or more buckets.
Buckets struct {
Buckets []Bucket `xml:"Bucket"`
} // Buckets are nested
}
// HealStatus - represents different states of healing an object could be in.
type HealStatus int
const (
// Healthy - Object that is already healthy
Healthy HealStatus = iota
// CanHeal - Object can be healed
CanHeal
// Corrupted - Object can't be healed
Corrupted
// QuorumUnavailable - Object can't be healed until read
// quorum is available
QuorumUnavailable
// CanPartiallyHeal - Object can't be healed completely until
// disks with missing parts come online
CanPartiallyHeal
)
// HealBucketInfo - represents healing related information of a bucket.
type HealBucketInfo struct {
Status HealStatus
}
// BucketInfo - represents bucket metadata.
type BucketInfo struct {
// Name of the bucket.
Name string
// Date and time when the bucket was created.
Created time.Time
// Healing information
HealBucketInfo *HealBucketInfo `xml:"HealBucketInfo,omitempty"`
}
// HealObjectInfo - represents healing related information of an object.
type HealObjectInfo struct {
Status HealStatus
MissingDataCount int
MissingParityCount int
}
// ObjectInfo container for object metadata.
type ObjectInfo struct {
// An ETag is optionally set to md5sum of an object. In case of multipart objects,
// ETag is of the form MD5SUM-N where MD5SUM is md5sum of all individual md5sums of
// each parts concatenated into one string.
ETag string `json:"etag"`
Key string `json:"name"` // Name of the object
LastModified time.Time `json:"lastModified"` // Date and time the object was last modified.
Size int64 `json:"size"` // Size in bytes of the object.
ContentType string `json:"contentType"` // A standard MIME type describing the format of the object data.
// Collection of additional metadata on the object.
// eg: x-amz-meta-*, content-encoding etc.
Metadata http.Header `json:"metadata"`
// Owner name.
Owner struct {
DisplayName string `json:"name"`
ID string `json:"id"`
} `json:"owner"`
// The class of stora
10BC8
ge used to store the object.
StorageClass string `json:"storageClass"`
// Error
Err error `json:"-"`
HealObjectInfo *HealObjectInfo `json:"healObjectInfo,omitempty"`
}
// UploadInfo - represents an ongoing upload that needs to be healed.
type UploadInfo struct {
Key string `json:"name"` // Name of the object being uploaded.
UploadID string `json:"uploadId"` // UploadID
// Owner name.
Owner struct {
DisplayName string `json:"name"`
ID string `json:"id"`
} `json:"owner"`
// The class of storage used to store the object.
StorageClass string `json:"storageClass"`
Initiated time.Time `json:"initiated"` // Time at which upload was initiated.
// Error
Err error `json:"-"`
HealUploadInfo *HealObjectInfo `json:"healObjectInfo,omitempty"`
}
// Initiator - has same properties as Owner.
type Initiator Owner
// upload - represents an ongoing multipart upload.
type upload struct {
Key string
UploadID string `xml:"UploadId"`
Initiator Initiator
Owner Owner
StorageClass string
Initiated time.Time
HealUploadInfo *HealObjectInfo `xml:"HealObjectInfo,omitempty"`
}
// listUploadsHealResponse - represents ListUploadsHeal response.
type listUploadsHealResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListMultipartUploadsResult" json:"-"`
Bucket string
KeyMarker string
UploadIDMarker string `xml:"UploadIdMarker"`
NextKeyMarker string
NextUploadIDMarker string `xml:"NextUploadIdMarker"`
Delimiter string
Prefix string
EncodingType string `xml:"EncodingType,omitempty"`
MaxUploads int
IsTruncated bool
// List of pending uploads.
Uploads []upload `xml:"Upload"`
// Delimed common prefixes.
CommonPrefixes []commonPrefix
}
type healQueryKey string
const (
healBucket healQueryKey = "bucket"
healObject healQueryKey = "object"
healPrefix healQueryKey = "prefix"
healMarker healQueryKey = "marker"
healDelimiter healQueryKey = "delimiter"
healMaxKey healQueryKey = "max-key"
healDryRun healQueryKey = "dry-run"
healUploadIDMarker healQueryKey = "upload-id-marker"
healMaxUpload healQueryKey = "max-uploads"
healUploadID healQueryKey = "upload-id"
)
// mkHealQueryVal - helper function to construct heal REST API query params.
func mkHealQueryVal(bucket, prefix, marker, delimiter, maxKeyStr string) url.Values {
queryVal := make(url.Values)
queryVal.Set("heal", "")
queryVal.Set(string(healBucket), bucket)
queryVal.Set(string(healPrefix), prefix)
queryVal.Set(string(healMarker), marker)
queryVal.Set(string(healDelimiter), delimiter)
queryVal.Set(string(healMaxKey), maxKeyStr)
return queryVal
}
// listObjectsHeal - issues heal list API request for a batch of maxKeys objects to be healed.
func (adm *AdminClient) listObjectsHeal(bucket, prefix, marker, delimiter string, maxKeys int) (listBucketHealResult, error) {
// Construct query params.
maxKeyStr := fmt.Sprintf("%d", maxKeys)
queryVal := mkHealQueryVal(bucket, prefix, marker, delimiter, maxKeyStr)
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "list-objects")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Empty 'list' of objects to be healed.
toBeHealedObjects := listBucketHealResult{}
// Execute GET on /?heal to list objects needing heal.
resp, err := adm.executeMethod("GET", reqData)
defer closeResponse(resp)
if err != nil {
return listBucketHealResult{}, err
}
if resp.StatusCode != http.StatusOK {
return toBeHealedObjects, httpRespToErrorResponse(resp)
}
err = xml.NewDecoder(resp.Body).Decode(&toBeHealedObjects)
return toBeHealedObjects, err
}
// ListObjectsHeal - Lists upto maxKeys objects that needing heal matching bucket, prefix, marker, delimiter.
func (adm *AdminClient) ListObjectsHeal(bucket, prefix string, recursive bool, doneCh <-chan struct{}) (<-chan ObjectInfo, error) {
// Allocate new list objects channel.
objectStatCh := make(chan ObjectInfo, 1)
// Default listing is delimited at "/"
delimiter := "/"
if recursive {
// If recursive we do not delimit.
delimiter = ""
}
// Initiate list objects goroutine here.
go func(objectStatCh chan<- ObjectInfo) {
defer close(objectStatCh)
// Save marker for next request.
var marker string
for {
// Get list of objects a maximum of 1000 per request.
result, err := adm.listObjectsHeal(bucket, prefix, marker, delimiter, 1000)
if err != nil {
objectStatCh <- ObjectInfo{
Err: err,
}
return
}
// If contents are available loop through and send over channel.
for _, object := range result.Contents {
// Save the marker.
marker = object.Key
select {
// Send object content.
case objectStatCh <- object:
// If receives done from the caller, return here.
case <-doneCh:
return
}
}
// Send all common prefixes if any.
// NOTE: prefixes are only present if the request is delimited.
for _, obj := range result.CommonPrefixes {
object := ObjectInfo{}
object.Key = obj.Prefix
object.Size = 0
select {
// Send object prefixes.
case objectStatCh <- object:
// If receives done from the caller, return here.
case <-doneCh:
return
}
}
// If next marker present, save it for next request.
if result.NextMarker != "" {
marker = result.NextMarker
}
// Listing ends result is not truncated, return right here.
if !result.IsTruncated {
return
}
}
}(objectStatCh)
return objectStatCh, nil
}
const timeFormatAMZLong = "2006-01-02T15:04:05.000Z" // Reply date format with nanosecond precision.
// ListBucketsHeal - issues heal bucket list API request
func (adm *AdminClient) ListBucketsHeal() ([]BucketInfo, error) {
queryVal := url.Values{}
queryVal.Set("heal", "")
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "list-buckets")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Execute GET on /?heal to list objects needing heal.
resp, err := adm.executeMethod("GET", reqData)
defer closeResponse(resp)
if err != nil {
return []BucketInfo{}, err
}
if resp.StatusCode != http.StatusOK {
return []BucketInfo{}, httpRespToErrorResponse(resp)
}
var listBucketsHealResult ListBucketsHealResponse
err = xml.NewDecoder(resp.Body).Decode(&listBucketsHealResult)
if err != nil {
return []BucketInfo{}, err
}
var bucketsToBeHealed []BucketInfo
for _, bucket := range listBucketsHealResult.Buckets.Buckets {
creationDate, err := time.Parse(timeFormatAMZLong, bucket.CreationDate)
if err != nil {
return []BucketInfo{}, err
}
bucketsToBeHealed = append(bucketsToBeHealed,
BucketInfo{
Name: bucket.Name,
Created: creationDate,
HealBucketInfo: bucket.HealBucketInfo,
})
}
return bucketsToBeHealed, nil
}
// HealBucket - Heal the given bucket
func (adm *AdminClient) HealBucket(bucket string, dryrun bool) error {
// Construct query params.
queryVal := url.Values{}
queryVal.Set("heal", "")
queryVal.Set(string(healBucket), bucket)
if dryrun {
queryVal.Set(string(healDryRun), "")
}
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "bucket")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Execute POST on /?heal&bucket=mybucket to heal a bucket.
resp, err := adm.executeMethod("POST", reqData)
defer closeResponse(resp)
if err != nil {
return err
}
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp)
}
return nil
}
// HealUpload - Heal the given upload.
func (adm *AdminClient) HealUpload(bucket, object, uploadID string, dryrun bool) (HealResult, error) {
// Construct query params.
queryVal := url.Values{}
queryVal.Set("heal", "")
queryVal.Set(string(healBucket), bucket)
queryVal.Set(string(healObject), object)
queryVal.Set(string(healUploadID), uploadID)
if dryrun {
queryVal.Set(string(healDryRun), "")
}
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "upload")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Execute POST on
// /?heal&bucket=mybucket&object=myobject&upload-id=uploadID
// to heal an upload.
resp, err := adm.executeMethod("POST", reqData)
defer closeResponse(resp)
if err != nil {
return HealResult{}, err
}
if resp.StatusCode != http.StatusOK {
return HealResult{}, httpRespToErrorResponse(resp)
}
// Healing is not performed so heal object result is empty.
if dryrun {
return HealResult{}, nil
}
jsonBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return HealResult{}, err
}
healResult := HealResult{}
err = json.Unmarshal(jsonBytes, &healResult)
if err != nil {
return HealResult{}, err
}
return healResult, nil
}
// HealResult - represents result of heal-object admin API.
type HealResult struct {
State HealState `json:"state"`
}
// HealState - different states of heal operation
type HealState int
const (
// HealNone - none of the disks healed
HealNone HealState = iota
// HealPartial - some disks were healed, others were offline
HealPartial
// HealOK - all disks were healed
HealOK
)
// HealObject - Heal the given object.
func (adm *AdminClient) HealObject(bucket, object string, dryrun bool) (HealResult, error) {
// Construct query params.
queryVal := url.Values{}
queryVal.Set("heal", "")
queryVal.Set(string(healBucket), bucket)
queryVal.Set(string(healObject), object)
if dryrun {
queryVal.Set(string(healDryRun), "")
}
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "object")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Execute POST on /?heal&bucket=mybucket&object=myobject to heal an object.
resp, err := adm.executeMethod("POST", reqData)
defer closeResponse(resp)
if err != nil {
return HealResult{}, err
}
if resp.StatusCode != http.StatusOK {
return HealResult{}, httpRespToErrorResponse(resp)
}
// Healing is not performed so heal object result is empty.
if dryrun {
return HealResult{}, nil
}
jsonBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return HealResult{}, err
}
healResult := HealResult{}
err = json.Unmarshal(jsonBytes, &healResult)
if err != nil {
return HealResult{}, err
}
return healResult, nil
}
// HealFormat - heal storage format on available disks.
func (adm *AdminClient) HealFormat(dryrun bool) error {
queryVal := url.Values{}
queryVal.Set("heal", "")
if dryrun {
queryVal.Set(string(healDryRun), "")
}
// Set x-minio-operation to format.
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "format")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Execute POST on /?heal to heal storage format.
resp, err := adm.executeMethod("POST", reqData)
defer closeResponse(resp)
if err != nil {
return err
}
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp)
}
return nil
}
// mkUploadsHealQuery - helper function to construct query params for
// ListUploadsHeal API.
func mkUploadsHealQuery(bucket, prefix, marker, uploadIDMarker, delimiter, maxUploadsStr string) url.Values {
queryVal := make(url.Values)
queryVal.Set("heal", "")
queryVal.Set(string(healBucket), bucket)
queryVal.Set(string(healPrefix), prefix)
queryVal.Set(string(healMarker), marker)
queryVal.Set(string(healUploadIDMarker), uploadIDMarker)
queryVal.Set(string(healDelimiter), delimiter)
queryVal.Set(string(healMaxUpload), maxUploadsStr)
return queryVal
}
func (adm *AdminClient) listUploadsHeal(bucket, prefix, marker, uploadIDMarker, delimiter string, maxUploads int) (listUploadsHealResponse, error) {
// Construct query params.
maxUploadsStr := fmt.Sprintf("%d", maxUploads)
queryVal := mkUploadsHealQuery(bucket, prefix, marker, uploadIDMarker, delimiter, maxUploadsStr)
hdrs := make(http.Header)
hdrs.Set(minioAdminOpHeader, "list-uploads")
reqData := requestData{
queryValues: queryVal,
customHeaders: hdrs,
}
// Empty 'list' of objects to be healed.
toBeHealedUploads := listUploadsHealResponse{}
// Execute GET on /?heal to list objects needing heal.
resp, err := adm.executeMethod("GET", reqData)
defer closeResponse(resp)
if err != nil {
return listUploadsHealResponse{}, err
}
if resp.StatusCode != http.StatusOK {
return toBeHealedUploads, httpRespToErrorResponse(resp)
}
err = xml.NewDecoder(resp.Body).Decode(&toBeHealedUploads)
if err != nil {
return listUploadsHealResponse{}, err
}
return toBeHealedUploads, nil
}
// ListUploadsHeal - issues list heal uploads API request
func (adm *AdminClient) ListUploadsHeal(bucket, prefix string, recursive bool,
doneCh <-chan struct{}) (<-chan UploadInfo, error) {
// Default listing is delimited at "/"
delimiter := "/"
if recursive {
// If recursive we do not delimit.
delimiter = ""
}
uploadIDMarker := ""
// Allocate new list objects channel.
uploadStatCh := make(chan UploadInfo, maxUploadsList)
// Initiate list objects goroutine here.
go func(uploadStatCh chan<- UploadInfo) {
defer close(uploadStatCh)
// Save marker for next request.
var marker string
for {
// Get list of objects a maximum of 1000 per request.
result, err := adm.listUploadsHeal(bucket, prefix, marker,
uploadIDMarker, delimiter, maxUploadsList)
if err != nil {
uploadStatCh <- UploadInfo{
Err: err,
}
return
}
// If contents are available loop through and
// send over channel.
for _, upload := range result.Uploads {
select {
// Send upload info.
case uploadStatCh <- UploadInfo{
Key: upload.Key,
UploadID: upload.UploadID,
Initiated: upload.Initiated,
HealUploadInfo: upload.HealUploadInfo,
}:
// If receives done from the caller, return here.
case <-doneCh:
return
}
}
// Send all common prefixes if any. NOTE:
// prefixes are only present if the request is
// delimited.
for _, prefix := range result.CommonPrefixes {
upload := UploadInfo{}
upload.Key = prefix.Prefix
select {
// Send object prefixes.
case uploadStatCh <- upload:
// If receives done from the caller, return here.
case <-doneCh:
return
}
}
// If next uploadID marker is present, set it
// for the nex
8
t reques
3F03
t.
if result.NextUploadIDMarker != "" {
uploadIDMarker = result.NextUploadIDMarker
}
// If next marker present, save it for next request.
if result.KeyMarker != "" {
marker = result.KeyMarker
}
// Listing ends result is not truncated,
// return right here.
if !result.IsTruncated {
return
}
}
}(uploadStatCh)
return uploadStatCh, nil
}