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