447 lines
12 KiB
Go
447 lines
12 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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"time"
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"github.com/nspcc-dev/neofs-api-go/pkg/owner"
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"github.com/nspcc-dev/neofs-s3-gw/api"
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"github.com/nspcc-dev/neofs-s3-gw/api/layer"
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"go.uber.org/zap"
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)
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type listObjectsArgs struct {
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Bucket string
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Delimiter string
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Encode string
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Marker string
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StartAfter string
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MaxKeys int
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Prefix string
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APIVersion int
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}
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// VersioningConfiguration contains VersioningConfiguration XML representation.
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type VersioningConfiguration struct {
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XMLName xml.Name `xml:"VersioningConfiguration"`
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Text string `xml:",chardata"`
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Xmlns string `xml:"xmlns,attr"`
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}
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// ListMultipartUploadsResult contains ListMultipartUploadsResult XML representation.
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type ListMultipartUploadsResult struct {
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XMLName xml.Name `xml:"ListMultipartUploadsResult"`
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Text string `xml:",chardata"`
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Xmlns string `xml:"xmlns,attr"`
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}
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const maxObjectList = 1000 // Limit number of objects in a listObjectsResponse/listObjectsVersionsResponse.
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func (h *handler) registerAndSendError(w http.ResponseWriter, r *http.Request, err error, logText string) {
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rid := api.GetRequestID(r.Context())
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h.log.Error(logText,
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrBadRequest).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusBadRequest,
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}, r.URL)
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}
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// ListBucketsHandler handles bucket listing requests.
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func (h *handler) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
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var (
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err error
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own = owner.NewID()
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res *ListBucketsResponse
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rid = api.GetRequestID(r.Context())
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)
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list, err := h.obj.ListBuckets(r.Context())
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if err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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return
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}
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if len(list) > 0 {
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own = list[0].Owner
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}
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res = &ListBucketsResponse{
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Owner: Owner{
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ID: own.String(),
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DisplayName: own.String(),
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},
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}
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for _, item := range list {
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res.Buckets.Buckets = append(res.Buckets.Buckets, Bucket{
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Name: item.Name,
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CreationDate: item.Created.Format(time.RFC3339),
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})
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}
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if err = api.EncodeToResponse(w, res); err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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}
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}
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func (h *handler) listObjects(w http.ResponseWriter, r *http.Request) (*listObjectsArgs, *layer.ListObjectsInfo, error) {
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var (
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err error
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arg *listObjectsArgs
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rid = api.GetRequestID(r.Context())
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)
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if arg, err = parseListObjectArgs(r); err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrBadRequest).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusBadRequest,
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}, r.URL)
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return nil, nil, err
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}
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marker := arg.Marker
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if arg.APIVersion == 2 {
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marker = arg.StartAfter
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}
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list, err := h.obj.ListObjects(r.Context(), &layer.ListObjectsParams{
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Bucket: arg.Bucket,
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Prefix: arg.Prefix,
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MaxKeys: arg.MaxKeys,
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Delimiter: arg.Delimiter,
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Marker: marker,
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Version: arg.APIVersion,
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})
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if err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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return nil, nil, err
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}
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return arg, list, nil
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}
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// ListObjectsV1Handler handles objects listing requests for API version 1.
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func (h *handler) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) {
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var rid = api.GetRequestID(r.Context())
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if arg, list, err := h.listObjects(w, r); err != nil {
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// error already sent to client
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return
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} else if err := api.EncodeToResponse(w, encodeV1(arg, list)); err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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}
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}
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func encodeV1(arg *listObjectsArgs, list *layer.ListObjectsInfo) *ListObjectsResponse {
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res := &ListObjectsResponse{
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Name: arg.Bucket,
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EncodingType: arg.Encode,
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Marker: arg.Marker,
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Prefix: arg.Prefix,
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MaxKeys: arg.MaxKeys,
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Delimiter: arg.Delimiter,
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IsTruncated: list.IsTruncated,
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NextMarker: list.NextMarker,
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}
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// fill common prefixes
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for i := range list.Prefixes {
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res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{
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Prefix: s3PathEncode(list.Prefixes[i], arg.Encode),
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})
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}
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// fill contents
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for _, obj := range list.Objects {
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res.Contents = append(res.Contents, Object{
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Key: s3PathEncode(obj.Name, arg.Encode),
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Size: obj.Size,
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LastModified: obj.Created.Format(time.RFC3339),
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Owner: Owner{
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ID: obj.Owner.String(),
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DisplayName: obj.Owner.String(),
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},
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ETag: obj.HashSum,
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// StorageClass: "",
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})
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}
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return res
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}
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// ListObjectsV2Handler handles objects listing requests for API version 2.
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func (h *handler) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) {
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var rid = api.GetRequestID(r.Context())
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if arg, list, err := h.listObjects(w, r); err != nil {
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// error already sent to client
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return
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} else if err := api.EncodeToResponse(w, encodeV2(arg, list)); err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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}
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}
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func encodeV2(arg *listObjectsArgs, list *layer.ListObjectsInfo) *ListObjectsV2Response {
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res := &ListObjectsV2Response{
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Name: arg.Bucket,
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EncodingType: arg.Encode,
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Prefix: s3PathEncode(arg.Prefix, arg.Encode),
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KeyCount: len(list.Objects) + len(list.Prefixes),
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MaxKeys: arg.MaxKeys,
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Delimiter: s3PathEncode(arg.Delimiter, arg.Encode),
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StartAfter: s3PathEncode(arg.StartAfter, arg.Encode),
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IsTruncated: list.IsTruncated,
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ContinuationToken: arg.Marker,
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NextContinuationToken: list.NextContinuationToken,
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}
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// fill common prefixes
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for i := range list.Prefixes {
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res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{
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Prefix: s3PathEncode(list.Prefixes[i], arg.Encode),
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})
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}
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// fill contents
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for _, obj := range list.Objects {
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res.Contents = append(res.Contents, Object{
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Key: s3PathEncode(obj.Name, arg.Encode),
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Size: obj.Size,
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LastModified: obj.Created.Format(time.RFC3339),
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Owner: Owner{
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ID: obj.Owner.String(),
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DisplayName: obj.Owner.String(),
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},
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ETag: obj.HashSum,
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// StorageClass: "",
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})
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}
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return res
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}
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func parseListObjectArgs(r *http.Request) (*listObjectsArgs, error) {
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var (
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err error
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res listObjectsArgs
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)
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if r.URL.Query().Get("max-keys") == "" {
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res.MaxKeys = maxObjectList
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} else if res.MaxKeys, err = strconv.Atoi(r.URL.Query().Get("max-keys")); err != nil || res.MaxKeys <= 0 {
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return nil, api.GetAPIError(api.ErrInvalidMaxKeys)
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}
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res.Prefix = r.URL.Query().Get("prefix")
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res.Marker = r.URL.Query().Get("marker")
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res.Delimiter = r.URL.Query().Get("delimiter")
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res.Encode = r.URL.Query().Get("encoding-type")
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res.StartAfter = r.URL.Query().Get("start-after")
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apiVersionStr := r.URL.Query().Get("list-type")
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res.APIVersion = 1
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if len(apiVersionStr) != 0 {
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if apiVersion, err := strconv.Atoi(apiVersionStr); err != nil || apiVersion != 2 {
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return nil, api.GetAPIError(api.ErrIllegalVersioningConfigurationException)
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}
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res.APIVersion = 2
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}
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if info := api.GetReqInfo(r.Context()); info != nil {
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res.Bucket = info.BucketName
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}
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return &res, nil
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}
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// GetBucketVersioningHandler implements bucket versioning getter handler.
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func (h *handler) GetBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
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var (
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rid = api.GetRequestID(r.Context())
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res = new(VersioningConfiguration)
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)
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res.Xmlns = "http://s3.amazonaws.com/doc/2006-03-01/"
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if err := api.EncodeToResponse(w, res); err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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}
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}
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// ListMultipartUploadsHandler implements multipart uploads listing handler.
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func (h *handler) ListMultipartUploadsHandler(w http.ResponseWriter, r *http.Request) {
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var (
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rid = api.GetRequestID(r.Context())
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res = new(ListMultipartUploadsResult)
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)
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res.Xmlns = "http://s3.amazonaws.com/doc/2006-03-01/"
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if err := api.EncodeToResponse(w, res); err != nil {
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h.log.Error("something went wrong",
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zap.String("request_id", rid),
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zap.Error(err))
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api.WriteErrorResponse(r.Context(), w, api.Error{
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Code: api.GetAPIError(api.ErrInternalError).Code,
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Description: err.Error(),
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HTTPStatusCode: http.StatusInternalServerError,
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}, r.URL)
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}
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}
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func (h *handler) ListBucketObjectVersionsHandler(w http.ResponseWriter, r *http.Request) {
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p, err := parseListObjectVersionsRequest(r)
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if err != nil {
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h.registerAndSendError(w, r, err, "failed to parse request ")
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return
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}
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info, err := h.obj.ListObjectVersions(r.Context(), p)
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if err != nil {
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h.registerAndSendError(w, r, err, "something went wrong")
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return
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}
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response := encodeListObjectVersionsToResponse(info, p.Bucket)
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if err := api.EncodeToResponse(w, response); err != nil {
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h.registerAndSendError(w, r, err, "something went wrong")
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}
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}
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func parseListObjectVersionsRequest(r *http.Request) (*layer.ListObjectVersionsParams, error) {
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var (
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err error
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res layer.ListObjectVersionsParams
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)
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if r.URL.Query().Get("max-keys") == "" {
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res.MaxKeys = maxObjectList
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} else if res.MaxKeys, err = strconv.Atoi(r.URL.Query().Get("max-keys")); err != nil || res.MaxKeys <= 0 {
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return nil, api.GetAPIError(api.ErrInvalidMaxKeys)
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}
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res.Prefix = r.URL.Query().Get("prefix")
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res.KeyMarker = r.URL.Query().Get("marker")
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res.Delimiter = r.URL.Query().Get("delimiter")
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res.Encode = r.URL.Query().Get("encoding-type")
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res.VersionIDMarker = r.URL.Query().Get("version-id-marker")
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if info := api.GetReqInfo(r.Context()); info != nil {
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res.Bucket = info.BucketName
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}
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return &res, nil
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}
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func encodeListObjectVersionsToResponse(info *layer.ListObjectVersionsInfo, bucketName string) *ListObjectsVersionsResponse {
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res := ListObjectsVersionsResponse{
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Name: bucketName,
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IsTruncated: info.IsTruncated,
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KeyMarker: info.KeyMarker,
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NextKeyMarker: info.NextKeyMarker,
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NextVersionIDMarker: info.NextVersionIDMarker,
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VersionIDMarker: info.VersionIDMarker,
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}
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for _, prefix := range info.CommonPrefixes {
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res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{Prefix: *prefix})
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}
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for _, ver := range info.Version {
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res.Version = append(res.Version, ObjectVersionResponse{
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IsLatest: ver.IsLatest,
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Key: ver.Object.Name,
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LastModified: ver.Object.Created.Format(time.RFC3339),
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Owner: Owner{
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ID: ver.Object.Owner.String(),
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DisplayName: ver.Object.Owner.String(),
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},
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Size: ver.Object.Size,
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VersionID: ver.VersionID,
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ETag: ver.Object.HashSum,
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})
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}
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// this loop is not starting till versioning is not implemented
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for _, del := range info.DeleteMarker {
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res.DeleteMarker = append(res.DeleteMarker, DeleteMarkerEntry{
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IsLatest: del.IsLatest,
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Key: del.Key,
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LastModified: del.LastModified,
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Owner: Owner{
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ID: del.Owner.String(),
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DisplayName: del.Owner.String(),
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},
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VersionID: del.VersionID,
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})
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}
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return &res
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}
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