frostfs-http-gw/internal/handler/upload.go

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package handler
import (
"context"
"encoding/json"
"io"
"net/http"
"strconv"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
"github.com/valyala/fasthttp"
"go.uber.org/zap"
)
const (
jsonHeader = "application/json; charset=UTF-8"
drainBufSize = 4096
)
type putResponse struct {
ObjectID string `json:"object_id"`
ContainerID string `json:"container_id"`
}
func newPutResponse(addr oid.Address) *putResponse {
return &putResponse{
ObjectID: addr.Object().EncodeToString(),
ContainerID: addr.Container().EncodeToString(),
}
}
func (pr *putResponse) encode(w io.Writer) error {
enc := json.NewEncoder(w)
enc.SetIndent("", "\t")
return enc.Encode(pr)
}
// Upload handles multipart upload request.
func (h *Handler) Upload(req *fasthttp.RequestCtx) {
var (
file MultipartFile
idObj oid.ID
addr oid.Address
scid, _ = req.UserValue("cid").(string)
log = h.log.With(zap.String("cid", scid))
bodyStream = req.RequestBodyStream()
drainBuf = make([]byte, drainBufSize)
)
ctx := utils.GetContextFromRequest(req)
idCnr, err := h.getContainerID(ctx, scid)
if err != nil {
log.Error(logs.WrongContainerID, zap.Error(err))
response.Error(req, "wrong container id", fasthttp.StatusBadRequest)
return
}
defer func() {
// If the temporary reader can be closed - let's close it.
if file == nil {
return
}
err := file.Close()
log.Debug(
logs.CloseTemporaryMultipartFormFile,
zap.Stringer("address", addr),
zap.String("filename", file.FileName()),
zap.Error(err),
)
}()
boundary := string(req.Request.Header.MultipartFormBoundary())
if file, err = fetchMultipartFile(h.log, bodyStream, boundary); err != nil {
log.Error(logs.CouldNotReceiveMultipartForm, zap.Error(err))
response.Error(req, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
return
}
filtered, err := filterHeaders(h.log, &req.Request.Header)
if err != nil {
log.Error(logs.CouldNotProcessHeaders, zap.Error(err))
response.Error(req, err.Error(), fasthttp.StatusBadRequest)
return
}
now := time.Now()
if rawHeader := req.Request.Header.Peek(fasthttp.HeaderDate); rawHeader != nil {
if parsed, err := time.Parse(http.TimeFormat, string(rawHeader)); err != nil {
log.Warn(logs.CouldNotParseClientTime, zap.String("Date header", string(rawHeader)), zap.Error(err))
} else {
now = parsed
}
}
if err = utils.PrepareExpirationHeader(req, h.pool, filtered, now); err != nil {
log.Error(logs.CouldNotPrepareExpirationHeader, zap.Error(err))
response.Error(req, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
return
}
attributes := make([]object.Attribute, 0, len(filtered))
// prepares attributes from filtered headers
for key, val := range filtered {
attribute := object.NewAttribute()
attribute.SetKey(key)
attribute.SetValue(val)
attributes = append(attributes, *attribute)
}
// sets FileName attribute if it wasn't set from header
if _, ok := filtered[object.AttributeFileName]; !ok {
filename := object.NewAttribute()
filename.SetKey(object.AttributeFileName)
filename.SetValue(file.FileName())
attributes = append(attributes, *filename)
}
// sets Timestamp attribute if it wasn't set from header and enabled by settings
if _, ok := filtered[object.AttributeTimestamp]; !ok && h.settings.DefaultTimestamp() {
timestamp := object.NewAttribute()
timestamp.SetKey(object.AttributeTimestamp)
timestamp.SetValue(strconv.FormatInt(time.Now().Unix(), 10))
attributes = append(attributes, *timestamp)
}
obj := object.New()
obj.SetContainerID(*idCnr)
obj.SetOwnerID(h.ownerID)
obj.SetAttributes(attributes...)
var prm pool.PrmObjectPut
prm.SetHeader(*obj)
prm.SetPayload(file)
bt := h.fetchBearerToken(ctx)
if bt != nil {
prm.UseBearer(*bt)
}
if idObj, err = h.pool.PutObject(ctx, prm); err != nil {
h.handlePutFrostFSErr(req, err)
return
}
addr.SetObject(idObj)
addr.SetContainer(*idCnr)
// Try to return the response, otherwise, if something went wrong, throw an error.
if err = newPutResponse(addr).encode(req); err != nil {
log.Error(logs.CouldNotEncodeResponse, zap.Error(err))
response.Error(req, "could not encode response", fasthttp.StatusBadRequest)
return
}
// Multipart is multipart and thus can contain more than one part which
// we ignore at the moment. Also, when dealing with chunked encoding
// the last zero-length chunk might be left unread (because multipart
// reader only cares about its boundary and doesn't look further) and
// it will be (erroneously) interpreted as the start of the next
// pipelined header. Thus we need to drain the body buffer.
for {
_, err = bodyStream.Read(drainBuf)
if err == io.EOF || err == io.ErrUnexpectedEOF {
break
}
}
// Report status code and content type.
req.Response.SetStatusCode(fasthttp.StatusOK)
req.Response.Header.SetContentType(jsonHeader)
}
func (h *Handler) handlePutFrostFSErr(r *fasthttp.RequestCtx, err error) {
statusCode, msg, additionalFields := response.FormErrorResponse("could not store file in frostfs", err)
logFields := append([]zap.Field{zap.Error(err)}, additionalFields...)
h.log.Error(logs.CouldNotStoreFileInFrostfs, logFields...)
response.Error(r, msg, statusCode)
}
func (h *Handler) fetchBearerToken(ctx context.Context) *bearer.Token {
if tkn, err := tokens.LoadBearerToken(ctx); err == nil && tkn != nil {
return tkn
}
return nil
}