frostfs-http-gw/uploader/upload.go

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package uploader
import (
"context"
"encoding/json"
"io"
"strconv"
"time"
"github.com/nspcc-dev/neofs-http-gw/response"
"github.com/nspcc-dev/neofs-http-gw/tokens"
"github.com/nspcc-dev/neofs-sdk-go/client"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
"github.com/nspcc-dev/neofs-sdk-go/object"
"github.com/nspcc-dev/neofs-sdk-go/owner"
"github.com/nspcc-dev/neofs-sdk-go/pool"
"github.com/nspcc-dev/neofs-sdk-go/token"
"github.com/valyala/fasthttp"
"go.uber.org/zap"
)
const (
jsonHeader = "application/json; charset=UTF-8"
drainBufSize = 4096
)
// Uploader is an upload request handler.
type Uploader struct {
log *zap.Logger
pool pool.Pool
enableDefaultTimestamp bool
}
// New creates a new Uploader using specified logger, connection pool and
// other options.
func New(log *zap.Logger, conns pool.Pool, enableDefaultTimestamp bool) *Uploader {
return &Uploader{log, conns, enableDefaultTimestamp}
}
// Upload handles multipart upload request.
func (u *Uploader) Upload(c *fasthttp.RequestCtx) {
var (
err error
file MultipartFile
obj *object.ID
addr = object.NewAddress()
cid = cid.New()
scid, _ = c.UserValue("cid").(string)
log = u.log.With(zap.String("cid", scid))
bodyStream = c.RequestBodyStream()
drainBuf = make([]byte, drainBufSize)
)
if err = tokens.StoreBearerToken(c); err != nil {
log.Error("could not fetch bearer token", zap.Error(err))
response.Error(c, "could not fetch bearer token", fasthttp.StatusBadRequest)
return
}
if err = cid.Parse(scid); err != nil {
log.Error("wrong container id", zap.Error(err))
response.Error(c, "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(
"close temporary multipart/form file",
zap.Stringer("address", addr),
zap.String("filename", file.FileName()),
zap.Error(err),
)
}()
boundary := string(c.Request.Header.MultipartFormBoundary())
if file, err = fetchMultipartFile(u.log, bodyStream, boundary); err != nil {
log.Error("could not receive multipart/form", zap.Error(err))
response.Error(c, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
return
}
filtered := filterHeaders(u.log, &c.Request.Header)
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 && u.enableDefaultTimestamp {
timestamp := object.NewAttribute()
timestamp.SetKey(object.AttributeTimestamp)
timestamp.SetValue(strconv.FormatInt(time.Now().Unix(), 10))
attributes = append(attributes, timestamp)
}
oid, bt := u.fetchOwnerAndBearerToken(c)
rawObject := object.NewRaw()
rawObject.SetContainerID(cid)
rawObject.SetOwnerID(oid)
rawObject.SetAttributes(attributes...)
ops := new(client.PutObjectParams).WithObject(rawObject.Object()).WithPayloadReader(file)
if obj, err = u.pool.PutObject(c, ops, pool.WithBearer(bt)); err != nil {
log.Error("could not store file in neofs", zap.Error(err))
response.Error(c, "could not store file in neofs", fasthttp.StatusBadRequest)
return
}
addr.SetObjectID(obj)
addr.SetContainerID(cid)
// Try to return the response, otherwise, if something went wrong, throw an error.
if err = newPutResponse(addr).encode(c); err != nil {
log.Error("could not prepare response", zap.Error(err))
response.Error(c, "could not prepare 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.
c.Response.SetStatusCode(fasthttp.StatusOK)
c.Response.Header.SetContentType(jsonHeader)
}
func (u *Uploader) fetchOwnerAndBearerToken(ctx context.Context) (*owner.ID, *token.BearerToken) {
if tkn, err := tokens.LoadBearerToken(ctx); err == nil && tkn != nil {
return tkn.Issuer(), tkn
}
return u.pool.OwnerID(), nil
}
type putResponse struct {
ObjectID string `json:"object_id"`
ContainerID string `json:"container_id"`
}
func newPutResponse(addr *object.Address) *putResponse {
return &putResponse{
ObjectID: addr.ObjectID().String(),
ContainerID: addr.ContainerID().String(),
}
}
func (pr *putResponse) encode(w io.Writer) error {
enc := json.NewEncoder(w)
enc.SetIndent("", "\t")
return enc.Encode(pr)
}