forked from TrueCloudLab/frostfs-s3-gw
309 lines
8.7 KiB
Go
309 lines
8.7 KiB
Go
package handler
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import (
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"net/http"
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"net/url"
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"strconv"
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"time"
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"github.com/nspcc-dev/neofs-s3-gw/api"
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"github.com/nspcc-dev/neofs-s3-gw/api/data"
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"github.com/nspcc-dev/neofs-s3-gw/api/errors"
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"github.com/nspcc-dev/neofs-s3-gw/api/layer"
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"github.com/nspcc-dev/neofs-sdk-go/object"
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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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reqInfo := api.GetReqInfo(r.Context())
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params, err := parseListObjectsArgsV1(reqInfo)
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if err != nil {
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h.logAndSendError(w, "failed to parse arguments", reqInfo, err)
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return
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}
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if err = h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
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h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
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return
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}
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list, err := h.obj.ListObjectsV1(r.Context(), params)
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if err != nil {
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h.logAndSendError(w, "something went wrong", reqInfo, err)
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return
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}
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if err = api.EncodeToResponse(w, encodeV1(params, list)); err != nil {
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h.logAndSendError(w, "something went wrong", reqInfo, err)
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}
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}
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func encodeV1(p *layer.ListObjectsParamsV1, list *layer.ListObjectsInfoV1) *ListObjectsV1Response {
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res := &ListObjectsV1Response{
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Name: p.Bucket,
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EncodingType: p.Encode,
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Marker: p.Marker,
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Prefix: p.Prefix,
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MaxKeys: p.MaxKeys,
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Delimiter: p.Delimiter,
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IsTruncated: list.IsTruncated,
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NextMarker: list.NextMarker,
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}
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res.CommonPrefixes = fillPrefixes(list.Prefixes, p.Encode)
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res.Contents = fillContentsWithOwner(list.Objects, p.Encode)
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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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reqInfo := api.GetReqInfo(r.Context())
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params, err := parseListObjectsArgsV2(reqInfo)
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if err != nil {
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h.logAndSendError(w, "failed to parse arguments", reqInfo, err)
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return
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}
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if err = h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
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h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
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return
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}
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list, err := h.obj.ListObjectsV2(r.Context(), params)
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if err != nil {
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h.logAndSendError(w, "something went wrong", reqInfo, err)
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return
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}
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if err = api.EncodeToResponse(w, encodeV2(params, list)); err != nil {
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h.logAndSendError(w, "something went wrong", reqInfo, err)
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}
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}
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func encodeV2(p *layer.ListObjectsParamsV2, list *layer.ListObjectsInfoV2) *ListObjectsV2Response {
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res := &ListObjectsV2Response{
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Name: p.Bucket,
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EncodingType: p.Encode,
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Prefix: s3PathEncode(p.Prefix, p.Encode),
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KeyCount: len(list.Objects) + len(list.Prefixes),
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MaxKeys: p.MaxKeys,
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Delimiter: s3PathEncode(p.Delimiter, p.Encode),
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StartAfter: s3PathEncode(p.StartAfter, p.Encode),
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IsTruncated: list.IsTruncated,
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ContinuationToken: p.ContinuationToken,
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NextContinuationToken: list.NextContinuationToken,
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}
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res.CommonPrefixes = fillPrefixes(list.Prefixes, p.Encode)
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res.Contents = fillContents(list.Objects, p.Encode, p.FetchOwner)
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return res
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}
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func parseListObjectsArgsV1(reqInfo *api.ReqInfo) (*layer.ListObjectsParamsV1, error) {
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var (
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res layer.ListObjectsParamsV1
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queryValues = reqInfo.URL.Query()
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)
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common, err := parseListObjectArgs(reqInfo)
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if err != nil {
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return nil, err
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}
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res.ListObjectsParamsCommon = *common
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res.Marker = queryValues.Get("marker")
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return &res, nil
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}
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func parseListObjectsArgsV2(reqInfo *api.ReqInfo) (*layer.ListObjectsParamsV2, error) {
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var (
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res layer.ListObjectsParamsV2
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queryValues = reqInfo.URL.Query()
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)
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common, err := parseListObjectArgs(reqInfo)
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if err != nil {
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return nil, err
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}
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res.ListObjectsParamsCommon = *common
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res.ContinuationToken, err = parseContinuationToken(queryValues)
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if err != nil {
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return nil, err
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}
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res.StartAfter = queryValues.Get("start-after")
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res.FetchOwner, _ = strconv.ParseBool(queryValues.Get("fetch-owner"))
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return &res, nil
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}
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func parseListObjectArgs(reqInfo *api.ReqInfo) (*layer.ListObjectsParamsCommon, error) {
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var (
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err error
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res layer.ListObjectsParamsCommon
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queryValues = reqInfo.URL.Query()
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)
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res.Bucket = reqInfo.BucketName
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res.Delimiter = queryValues.Get("delimiter")
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res.Encode = queryValues.Get("encoding-type")
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if queryValues.Get("max-keys") == "" {
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res.MaxKeys = maxObjectList
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} else if res.MaxKeys, err = strconv.Atoi(queryValues.Get("max-keys")); err != nil || res.MaxKeys < 0 {
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return nil, errors.GetAPIError(errors.ErrInvalidMaxKeys)
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}
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res.Prefix = queryValues.Get("prefix")
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return &res, nil
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}
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func parseContinuationToken(queryValues url.Values) (string, error) {
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if val, ok := queryValues["continuation-token"]; ok {
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if err := object.NewID().Parse(val[0]); err != nil {
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return "", errors.GetAPIError(errors.ErrIncorrectContinuationToken)
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}
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return val[0], nil
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}
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return "", nil
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}
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func fillPrefixes(src []string, encode string) []CommonPrefix {
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var dst []CommonPrefix
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for _, obj := range src {
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dst = append(dst, CommonPrefix{
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Prefix: s3PathEncode(obj, encode),
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})
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}
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return dst
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}
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func fillContentsWithOwner(src []*data.ObjectInfo, encode string) []Object {
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return fillContents(src, encode, true)
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}
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func fillContents(src []*data.ObjectInfo, encode string, fetchOwner bool) []Object {
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var dst []Object
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for _, obj := range src {
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res := Object{
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Key: s3PathEncode(obj.Name, encode),
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Size: obj.Size,
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LastModified: obj.Created.UTC().Format(time.RFC3339),
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ETag: obj.HashSum,
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}
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if fetchOwner {
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res.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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}
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dst = append(dst, res)
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}
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return dst
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}
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func (h *handler) ListBucketObjectVersionsHandler(w http.ResponseWriter, r *http.Request) {
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reqInfo := api.GetReqInfo(r.Context())
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p, err := parseListObjectVersionsRequest(reqInfo)
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if err != nil {
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h.logAndSendError(w, "failed to parse request", reqInfo, err)
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return
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}
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bktInfo, err := h.obj.GetBucketInfo(r.Context(), 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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if err = checkOwner(bktInfo, r.Header.Get(api.AmzExpectedBucketOwner)); err != nil {
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h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
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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.logAndSendError(w, "something went wrong", reqInfo, err)
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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.logAndSendError(w, "something went wrong", reqInfo, err)
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}
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}
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func parseListObjectVersionsRequest(reqInfo *api.ReqInfo) (*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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queryValues = reqInfo.URL.Query()
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)
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if queryValues.Get("max-keys") == "" {
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res.MaxKeys = maxObjectList
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} else if res.MaxKeys, err = strconv.Atoi(queryValues.Get("max-keys")); err != nil || res.MaxKeys <= 0 {
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return nil, errors.GetAPIError(errors.ErrInvalidMaxKeys)
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}
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res.Prefix = queryValues.Get("prefix")
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res.KeyMarker = queryValues.Get("marker")
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res.Delimiter = queryValues.Get("delimiter")
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res.Encode = queryValues.Get("encoding-type")
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res.VersionIDMarker = queryValues.Get("version-id-marker")
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res.Bucket = reqInfo.BucketName
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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.UTC().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.Object.NullableVersion(),
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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.Object.Name,
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LastModified: del.Object.Created.UTC().Format(time.RFC3339),
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Owner: Owner{
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ID: del.Object.Owner.String(),
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DisplayName: del.Object.Owner.String(),
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},
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VersionID: del.Object.Version(),
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})
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}
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return &res
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}
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