frostfs-s3-gw/api/handler/delete.go

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package handler
import (
"encoding/xml"
"net/http"
"strconv"
"strings"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/errors"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/middleware"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
"go.uber.org/zap"
)
// limitation of AWS https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteObjects.html
const maxObjectsToDelete = 1000
// DeleteObjectsRequest -- xml carrying the object key names which should be deleted.
type DeleteObjectsRequest struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Delete" json:"-"`
// Element to enable quiet mode for the request
Quiet bool `xml:"Quiet,omitempty"`
// List of objects to be deleted
Objects []ObjectIdentifier `xml:"Object"`
}
// ObjectIdentifier carries the key name for the object to delete.
type ObjectIdentifier struct {
ObjectName string `xml:"Key"`
VersionID string `xml:"VersionId,omitempty"`
}
// DeletedObject carries the key name for the object to delete.
type DeletedObject struct {
ObjectIdentifier
DeleteMarker bool `xml:"DeleteMarker,omitempty"`
DeleteMarkerVersionID string `xml:"DeleteMarkerVersionId,omitempty"`
}
// DeleteError structure.
type DeleteError struct {
Code string `xml:"Code,omitempty"`
Message string `xml:"Message,omitempty"`
Key string `xml:"Key,omitempty"`
VersionID string `xml:"VersionId,omitempty"`
}
// DeleteObjectsResponse container for multiple object deletes.
type DeleteObjectsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ DeleteResult" json:"-"`
// Collection of all deleted objects
DeletedObjects []DeletedObject `xml:"Deleted,omitempty"`
// Collection of errors deleting certain objects.
Errors []DeleteError `xml:"Error,omitempty"`
}
func (h *handler) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
reqInfo := middleware.GetReqInfo(ctx)
versionID := reqInfo.URL.Query().Get(api.QueryVersionID)
versionedObject := []*layer.VersionedObject{{
Name: reqInfo.ObjectName,
VersionID: versionID,
}}
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
bktSettings, err := h.obj.GetBucketSettings(ctx, bktInfo)
if err != nil {
h.logAndSendError(w, "could not get bucket settings", reqInfo, err)
return
}
p := &layer.DeleteObjectParams{
BktInfo: bktInfo,
Objects: versionedObject,
Settings: bktSettings,
}
deletedObjects := h.obj.DeleteObjects(ctx, p)
deletedObject := deletedObjects[0]
if deletedObject.Error != nil {
if isErrObjectLocked(deletedObject.Error) {
h.logAndSendError(w, "object is locked", reqInfo, errors.GetAPIError(errors.ErrAccessDenied))
} else {
h.logAndSendError(w, "could not delete object", reqInfo, deletedObject.Error)
}
return
}
var m *SendNotificationParams
if bktSettings.VersioningEnabled() && len(versionID) == 0 {
m = &SendNotificationParams{
Event: EventObjectRemovedDeleteMarkerCreated,
NotificationInfo: &data.NotificationInfo{
Name: reqInfo.ObjectName,
HashSum: deletedObject.DeleteMarkerEtag,
},
BktInfo: bktInfo,
ReqInfo: reqInfo,
}
} else {
var objID oid.ID
if len(versionID) != 0 {
if err = objID.DecodeString(versionID); err != nil {
h.reqLogger(ctx).Error(logs.CouldntSendNotification, zap.Error(err))
}
}
m = &SendNotificationParams{
Event: EventObjectRemovedDelete,
NotificationInfo: &data.NotificationInfo{
Name: reqInfo.ObjectName,
Version: objID.EncodeToString(),
},
BktInfo: bktInfo,
ReqInfo: reqInfo,
}
}
if err = h.sendNotifications(ctx, m); err != nil {
h.reqLogger(ctx).Error(logs.CouldntSendNotification, zap.Error(err))
}
if deletedObject.VersionID != "" {
w.Header().Set(api.AmzVersionID, deletedObject.VersionID)
}
if deletedObject.DeleteMarkVersion != "" {
w.Header().Set(api.AmzDeleteMarker, strconv.FormatBool(true))
if deletedObject.VersionID == "" {
w.Header().Set(api.AmzVersionID, deletedObject.DeleteMarkVersion)
}
}
w.WriteHeader(http.StatusNoContent)
}
func isErrObjectLocked(err error) bool {
switch err.(type) {
default:
return strings.Contains(err.Error(), "object is locked")
case *apistatus.ObjectLocked:
return true
}
}
2021-05-13 19:25:32 +00:00
// DeleteMultipleObjectsHandler handles multiple delete requests.
func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
reqInfo := middleware.GetReqInfo(ctx)
// Content-Md5 is required and should be set
// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
if _, ok := r.Header[api.ContentMD5]; !ok {
h.logAndSendError(w, "missing Content-MD5", reqInfo, errors.GetAPIError(errors.ErrMissingContentMD5))
return
}
// Content-Length is required and should be non-zero
// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
if r.ContentLength <= 0 {
h.logAndSendError(w, "missing Content-Length", reqInfo, errors.GetAPIError(errors.ErrMissingContentLength))
return
}
// Unmarshal list of keys to be deleted.
requested := &DeleteObjectsRequest{}
if err := h.cfg.NewXMLDecoder(r.Body).Decode(requested); err != nil {
h.logAndSendError(w, "couldn't decode body", reqInfo, errors.GetAPIError(errors.ErrMalformedXML))
return
}
if len(requested.Objects) == 0 || len(requested.Objects) > maxObjectsToDelete {
h.logAndSendError(w, "number of objects to delete must be greater than 0 and less or equal to 1000", reqInfo, errors.GetAPIError(errors.ErrMalformedXML))
return
}
removed := make(map[string]*layer.VersionedObject)
toRemove := make([]*layer.VersionedObject, 0, len(requested.Objects))
for _, obj := range requested.Objects {
versionedObj := &layer.VersionedObject{
Name: obj.ObjectName,
VersionID: obj.VersionID,
}
toRemove = append(toRemove, versionedObj)
removed[versionedObj.String()] = versionedObj
}
response := &DeleteObjectsResponse{
Errors: make([]DeleteError, 0, len(toRemove)),
DeletedObjects: make([]DeletedObject, 0, len(toRemove)),
}
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
bktSettings, err := h.obj.GetBucketSettings(ctx, bktInfo)
if err != nil {
h.logAndSendError(w, "could not get bucket settings", reqInfo, err)
return
}
p := &layer.DeleteObjectParams{
BktInfo: bktInfo,
Objects: toRemove,
Settings: bktSettings,
IsMultiple: true,
}
deletedObjects := h.obj.DeleteObjects(ctx, p)
for _, obj := range deletedObjects {
if obj.Error != nil {
code := "BadRequest"
if s3err, ok := obj.Error.(errors.Error); ok {
code = s3err.Code
}
response.Errors = append(response.Errors, DeleteError{
Code: code,
Message: obj.Error.Error(),
Key: obj.Name,
VersionID: obj.VersionID,
})
} else if !requested.Quiet {
deletedObj := DeletedObject{
ObjectIdentifier: ObjectIdentifier{
ObjectName: obj.Name,
VersionID: obj.VersionID,
},
DeleteMarkerVersionID: obj.DeleteMarkVersion,
}
if deletedObj.DeleteMarkerVersionID != "" {
deletedObj.DeleteMarker = true
}
response.DeletedObjects = append(response.DeletedObjects, deletedObj)
}
}
if err = middleware.EncodeToResponse(w, response); err != nil {
h.logAndSendError(w, "could not write response", reqInfo, err)
return
}
}
func (h *handler) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := middleware.GetReqInfo(r.Context())
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
var sessionToken *session.Container
boxData, err := middleware.GetBoxData(r.Context())
if err == nil {
sessionToken = boxData.Gate.SessionTokenForDelete()
}
if err = h.obj.DeleteBucket(r.Context(), &layer.DeleteBucketParams{
BktInfo: bktInfo,
SessionToken: sessionToken,
}); err != nil {
h.logAndSendError(w, "couldn't delete bucket", reqInfo, err)
}
chainIDs := []chain.ID{
getBucketChainID(chain.S3, bktInfo),
getBucketChainID(chain.Ingress, bktInfo),
getBucketCannedChainID(chain.S3, bktInfo.CID),
getBucketCannedChainID(chain.Ingress, bktInfo.CID),
}
if err = h.ape.DeleteBucketPolicy(reqInfo.Namespace, bktInfo.CID, chainIDs); err != nil {
h.logAndSendError(w, "failed to delete policy from storage", reqInfo, err)
return
}
w.WriteHeader(http.StatusNoContent)
}