forked from TrueCloudLab/frostfs-http-gw
122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
package downloader
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import (
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"context"
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"io"
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"net/http"
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"strconv"
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"time"
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"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
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"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
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"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
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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/pool"
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"github.com/valyala/fasthttp"
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"go.uber.org/zap"
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)
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// max bytes needed to detect content type according to http.DetectContentType docs.
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const sizeToDetectType = 512
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const (
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hdrObjectID = "X-Object-Id"
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hdrOwnerID = "X-Owner-Id"
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hdrContainerID = "X-Container-Id"
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)
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func headObject(ctx context.Context, req request, clnt *pool.Pool, objectAddress oid.Address) {
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var start = time.Now()
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btoken := bearerToken(ctx)
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var prm pool.PrmObjectHead
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prm.SetAddress(objectAddress)
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if btoken != nil {
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prm.UseBearer(*btoken)
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}
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obj, err := clnt.HeadObject(ctx, prm)
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if err != nil {
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req.handleFrostFSErr(err, start)
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return
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}
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req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(obj.PayloadSize(), 10))
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var contentType string
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for _, attr := range obj.Attributes() {
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key := attr.Key()
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val := attr.Value()
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if !isValidToken(key) || !isValidValue(val) {
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continue
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}
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key = utils.BackwardTransformIfSystem(key)
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req.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
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switch key {
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case object.AttributeTimestamp:
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value, err := strconv.ParseInt(val, 10, 64)
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if err != nil {
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req.log.Info(logs.CouldntParseCreationDate,
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zap.String("key", key),
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zap.String("val", val),
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zap.Error(err))
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continue
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}
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req.Response.Header.Set(fasthttp.HeaderLastModified, time.Unix(value, 0).UTC().Format(http.TimeFormat))
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case object.AttributeContentType:
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contentType = val
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}
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}
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idsToResponse(&req.Response, &obj)
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if len(contentType) == 0 {
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contentType, _, err = readContentType(obj.PayloadSize(), func(sz uint64) (io.Reader, error) {
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var prmRange pool.PrmObjectRange
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prmRange.SetAddress(objectAddress)
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prmRange.SetLength(sz)
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if btoken != nil {
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prmRange.UseBearer(*btoken)
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}
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resObj, err := clnt.ObjectRange(ctx, prmRange)
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if err != nil {
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return nil, err
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}
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return &resObj, nil
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})
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if err != nil && err != io.EOF {
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req.handleFrostFSErr(err, start)
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return
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}
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}
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req.SetContentType(contentType)
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}
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func idsToResponse(resp *fasthttp.Response, obj *object.Object) {
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objID, _ := obj.ID()
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cnrID, _ := obj.ContainerID()
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resp.Header.Set(hdrObjectID, objID.String())
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resp.Header.Set(hdrOwnerID, obj.OwnerID().String())
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resp.Header.Set(hdrContainerID, cnrID.String())
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}
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// HeadByAddressOrBucketName handles head requests using simple cid/oid or bucketname/key format.
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func (d *Downloader) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
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test, _ := c.UserValue("oid").(string)
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var id oid.ID
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err := id.DecodeString(test)
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if err != nil {
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d.byBucketname(c, headObject)
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} else {
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d.byAddress(c, headObject)
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}
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}
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// HeadByAttribute handles attribute-based head requests.
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func (d *Downloader) HeadByAttribute(c *fasthttp.RequestCtx) {
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d.byAttribute(c, headObject)
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}
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