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

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package handler
import (
"encoding/xml"
"net/http"
"strconv"
"github.com/nspcc-dev/neofs-s3-gw/api"
"github.com/nspcc-dev/neofs-s3-gw/api/errors"
"github.com/nspcc-dev/neofs-s3-gw/api/layer"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
// DeleteObjectsRequest - xml carrying the object key names which needs to be deleted.
type DeleteObjectsRequest struct {
// Element to enable quiet mode for the request
Quiet bool
// List of objects to be deleted
Objects []ObjectIdentifier `xml:"Object"`
}
// ObjectIdentifier carries key name for the object to delete.
type ObjectIdentifier struct {
ObjectName string `xml:"Key"`
VersionID string `xml:"VersionId,omitempty"`
}
// DeletedObject carries 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
Message string
Key string
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) {
reqInfo := api.GetReqInfo(r.Context())
versionedObject := []*layer.VersionedObject{{
Name: reqInfo.ObjectName,
VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
}}
if err := h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
return
}
deletedObjects, err := h.obj.DeleteObjects(r.Context(), reqInfo.BucketName, versionedObject)
deletedObject := deletedObjects[0]
if err == nil {
err = deletedObject.Error
}
if err != nil {
h.log.Error("could not delete object",
zap.String("request_id", reqInfo.RequestID),
zap.String("bucket_name", reqInfo.BucketName),
zap.String("object_name", reqInfo.ObjectName),
zap.Error(err))
}
if deletedObject.DeleteMarkVersion != "" {
w.Header().Set(api.AmzDeleteMarker, strconv.FormatBool(true))
w.Header().Set(api.AmzVersionID, deletedObject.DeleteMarkVersion)
}
w.WriteHeader(http.StatusNoContent)
}
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// DeleteMultipleObjectsHandler handles multiple delete requests.
func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
// Content-Md5 is requied 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 := xml.NewDecoder(r.Body).Decode(requested); err != nil {
h.logAndSendError(w, "couldn't decode body", reqInfo, err)
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)),
}
if err := h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
return
}
marshaler := zapcore.ArrayMarshalerFunc(func(encoder zapcore.ArrayEncoder) error {
for _, obj := range toRemove {
encoder.AppendString(obj.String())
}
return nil
})
deletedObjects, err := h.obj.DeleteObjects(r.Context(), reqInfo.BucketName, toRemove)
if !requested.Quiet && err != nil {
h.logAndSendError(w, "couldn't delete objects", reqInfo, err)
return
}
var errs []error
for _, obj := range deletedObjects {
if obj.Error == nil {
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)
} else if !requested.Quiet {
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,
})
errs = append(errs, obj.Error)
}
}
if !requested.Quiet && len(errs) != 0 {
additional := []zap.Field{
zap.Array("objects", marshaler),
zap.Errors("errors", errs),
}
h.logAndSendError(w, "could not delete objects", reqInfo, nil, additional...)
}
if err := api.EncodeToResponse(w, response); err != nil {
h.logAndSendError(w, "could not write response", reqInfo, err, zap.Array("objects", marshaler))
return
}
}
func (h *handler) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
if err := h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
return
}
if err := h.obj.DeleteBucket(r.Context(), &layer.DeleteBucketParams{Name: reqInfo.BucketName}); err != nil {
h.logAndSendError(w, "couldn't delete bucket", reqInfo, err)
}
}