forked from TrueCloudLab/frostfs-s3-gw
[#96] Support ranges for GetObject
Signed-off-by: Denis Kirillov <denis@nspcc.ru>
This commit is contained in:
Denis Kirillov
parent
39a43c21a1
commit
c4fef3d948
4 changed files with 151 additions and 33 deletions
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@ -2,9 +2,11 @@ package handler
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"strconv"
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"strings"
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"sync"
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"github.com/gorilla/mux"
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@ -39,7 +41,14 @@ func (d *detector) Write(data []byte) (int, error) {
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}
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func (h *handler) contentTypeFetcher(ctx context.Context, w io.Writer, info *layer.ObjectInfo) (string, error) {
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return h.contentTypeFetcherWithRange(ctx, w, info, nil)
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}
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func (h *handler) contentTypeFetcherWithRange(ctx context.Context, w io.Writer, info *layer.ObjectInfo, rangeParams *layer.RangeParams) (string, error) {
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if info.IsDir() {
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if rangeParams != nil {
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return "", fmt.Errorf("it is forbidden to request for a range in the directory")
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}
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return info.ContentType, nil
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}
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@ -49,6 +58,7 @@ func (h *handler) contentTypeFetcher(ctx context.Context, w io.Writer, info *lay
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Bucket: info.Bucket,
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Object: info.Name,
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Writer: writer,
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Range: rangeParams,
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}
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// params.Length = inf.Size
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@ -60,6 +70,42 @@ func (h *handler) contentTypeFetcher(ctx context.Context, w io.Writer, info *lay
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return writer.contentType, nil
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}
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func fetchRangeHeader(headers http.Header, fullSize uint64) (*layer.RangeParams, error) {
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const prefix = "bytes="
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rangeHeader := headers.Get("Range")
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if len(rangeHeader) == 0 {
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return nil, nil
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}
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if !strings.HasPrefix(rangeHeader, prefix) {
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return nil, fmt.Errorf("unknown unit in range header")
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}
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arr := strings.Split(strings.TrimPrefix(rangeHeader, prefix), "-")
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if len(arr) != 2 || (len(arr[0]) == 0 && len(arr[1]) == 0) {
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return nil, fmt.Errorf("unknown byte-range-set")
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}
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var end, start uint64
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var err0, err1 error
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base, bitSize := 10, 64
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if len(arr[0]) == 0 {
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end, err1 = strconv.ParseUint(arr[1], base, bitSize)
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start = fullSize - end
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end = fullSize - 1
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} else if len(arr[1]) == 0 {
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start, err0 = strconv.ParseUint(arr[0], base, bitSize)
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end = fullSize - 1
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} else {
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start, err0 = strconv.ParseUint(arr[0], base, bitSize)
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end, err1 = strconv.ParseUint(arr[1], base, bitSize)
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}
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if err0 != nil || err1 != nil || start > end {
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return nil, fmt.Errorf("invalid Range header")
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}
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return &layer.RangeParams{Start: start, End: end}, nil
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}
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func writeHeaders(h http.Header, info *layer.ObjectInfo) {
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h.Set("Content-Type", info.ContentType)
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h.Set("Last-Modified", info.Created.Format(http.TimeFormat))
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@ -72,8 +118,9 @@ func writeHeaders(h http.Header, info *layer.ObjectInfo) {
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func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
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var (
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err error
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inf *layer.ObjectInfo
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err error
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inf *layer.ObjectInfo
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params *layer.RangeParams
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req = mux.Vars(r)
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bkt = req["bucket"]
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@ -82,34 +129,40 @@ func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
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)
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if inf, err = h.obj.GetObjectInfo(r.Context(), bkt, obj); err != nil {
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h.log.Error("could not find object",
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zap.String("request_id", rid),
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zap.String("bucket_name", bkt),
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zap.String("object_name", obj),
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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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writeError(w, r, h.log, "could not find object", rid, bkt, obj, err)
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return
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} else if inf.ContentType, err = h.contentTypeFetcher(r.Context(), w, inf); err != nil {
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h.log.Error("could not get object",
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zap.String("request_id", rid),
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zap.String("bucket_name", bkt),
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zap.String("object_name", obj),
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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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if params, err = fetchRangeHeader(r.Header, uint64(inf.Size)); err != nil {
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writeError(w, r, h.log, "could not parse range header", rid, bkt, obj, err)
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return
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}
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if inf.ContentType, err = h.contentTypeFetcherWithRange(r.Context(), w, inf, params); err != nil {
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writeError(w, r, h.log, "could not get object", rid, bkt, obj, err)
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return
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}
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writeHeaders(w.Header(), inf)
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if params != nil {
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writeRangeHeaders(w, params, inf.Size)
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}
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}
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func writeRangeHeaders(w http.ResponseWriter, params *layer.RangeParams, size int64) {
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w.Header().Set("Accept-Ranges", "bytes")
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w.Header().Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", params.Start, params.End, size))
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w.WriteHeader(http.StatusPartialContent)
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}
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func writeError(w http.ResponseWriter, r *http.Request, log *zap.Logger, msg, rid, bkt, obj string, err error) {
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log.Error(msg,
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zap.String("request_id", rid),
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zap.String("bucket_name", bkt),
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zap.String("object_name", obj),
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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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41
api/handler/get_test.go
Normal file
41
api/handler/get_test.go
Normal file
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@ -0,0 +1,41 @@
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package handler
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import (
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"net/http"
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"testing"
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"github.com/nspcc-dev/neofs-s3-gw/api/layer"
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"github.com/stretchr/testify/require"
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)
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func TestFetchRangeHeader(t *testing.T) {
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for _, tc := range []struct {
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header string
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expected *layer.RangeParams
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fullSize uint64
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err bool
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}{
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{header: "bytes=0-256", expected: &layer.RangeParams{Start: 0, End: 256}, err: false},
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{header: "bytes=0-0", expected: &layer.RangeParams{Start: 0, End: 0}, err: false},
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{header: "bytes=0-", expected: &layer.RangeParams{Start: 0, End: 99}, fullSize: 100, err: false},
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{header: "bytes=-10", expected: &layer.RangeParams{Start: 90, End: 99}, fullSize: 100, err: false},
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{header: "", err: false},
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{header: "bytes=-1-256", err: true},
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{header: "bytes=256-0", err: true},
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{header: "bytes=string-0", err: true},
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{header: "bytes=0-string", err: true},
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{header: "bytes:0-256", err: true},
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{header: "bytes:-", err: true},
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} {
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h := make(http.Header)
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h.Add("Range", tc.header)
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params, err := fetchRangeHeader(h, tc.fullSize)
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if tc.err {
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require.Error(t, err)
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continue
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}
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require.NoError(t, err)
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require.Equal(t, tc.expected, params)
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}
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}
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@ -38,6 +38,7 @@ type (
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// GetObjectParams stores object get request parameters.
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GetObjectParams struct {
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Range *RangeParams
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Bucket string
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Object string
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Offset int64
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@ -45,6 +46,12 @@ type (
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Writer io.Writer
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}
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// RangeParams stores range header request parameters.
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RangeParams struct {
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Start uint64
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End uint64
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}
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// PutObjectParams stores object put request parameters.
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PutObjectParams struct {
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Bucket string
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@ -274,14 +281,23 @@ func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error {
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addr.SetObjectID(oid)
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addr.SetContainerID(bkt.CID)
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_, err = n.objectGet(ctx, &getParams{
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Writer: p.Writer,
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params := &getParams{
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Writer: p.Writer,
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address: addr,
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offset: p.Offset,
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length: p.Length,
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}
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offset: p.Offset,
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length: p.Length,
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})
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if p.Range != nil {
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objRange := object.NewRange()
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objRange.SetOffset(p.Range.Start)
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// Range header is inclusive
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objRange.SetLength(p.Range.End - p.Range.Start + 1)
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params.Range = objRange
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_, err = n.objectRange(ctx, params)
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} else {
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_, err = n.objectGet(ctx, params)
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}
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if err != nil {
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return fmt.Errorf("couldn't get object, cid: %s : %w", bkt.CID, err)
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@ -24,6 +24,7 @@ type (
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getParams struct {
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io.Writer
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*object.Range
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offset int64
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length int64
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@ -73,6 +74,13 @@ func (n *layer) objectGet(ctx context.Context, p *getParams) (*object.Object, er
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return n.pool.GetObject(ctx, ops, n.BearerOpt(ctx))
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}
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// objectRange gets object range and writes it into provided io.Writer.
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func (n *layer) objectRange(ctx context.Context, p *getParams) ([]byte, error) {
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w := newWriter(p.Writer, p.offset, p.length)
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ops := new(client.RangeDataParams).WithAddress(p.address).WithDataWriter(w).WithRange(p.Range)
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return n.pool.ObjectPayloadRangeData(ctx, ops, n.BearerOpt(ctx))
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}
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// objectPut into NeoFS, took payload from io.Reader.
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func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) {
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var (
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