frostfs-s3-gw/api/handler/list-objects.go

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package handler
import (
"net/http"
"strconv"
"time"
"github.com/gorilla/mux"
"github.com/nspcc-dev/neofs-s3-gate/api"
"github.com/nspcc-dev/neofs-s3-gate/api/layer"
"go.uber.org/zap"
)
type listObjectsArgs struct {
Bucket string
Delimeter string
Encode string
Marker string
MaxKeys int
Prefix string
Version string
}
var maxObjectList = 10000 // Limit number of objects in a listObjectsResponse/listObjectsVersionsResponse.
func (h *handler) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) {
var (
err error
arg *listObjectsArgs
res *ListObjectsResponse
rid = api.GetRequestID(r.Context())
)
if arg, err = parseListObjectArgs(r); err != nil {
h.log.Error("something went wrong",
zap.String("request_id", rid),
zap.Error(err))
api.WriteErrorResponse(r.Context(), w, api.Error{
Code: api.GetAPIError(api.ErrBadRequest).Code,
Description: err.Error(),
HTTPStatusCode: http.StatusBadRequest,
}, r.URL)
return
}
list, err := h.obj.ListObjects(r.Context(), &layer.ListObjectsParams{
Bucket: arg.Bucket,
Prefix: arg.Prefix,
MaxKeys: arg.MaxKeys,
Delimiter: arg.Delimeter,
})
if err != nil {
h.log.Error("something went wrong",
zap.String("request_id", rid),
zap.Error(err))
api.WriteErrorResponse(r.Context(), w, api.Error{
Code: api.GetAPIError(api.ErrInternalError).Code,
Description: err.Error(),
HTTPStatusCode: http.StatusInternalServerError,
}, r.URL)
return
}
res = &ListObjectsResponse{
Name: arg.Bucket,
EncodingType: arg.Encode,
Marker: arg.Marker,
Prefix: arg.Prefix,
MaxKeys: arg.MaxKeys,
Delimiter: arg.Delimeter,
IsTruncated: list.IsTruncated,
NextMarker: list.NextContinuationToken,
}
// fill common prefixes
for i := range list.Prefixes {
res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{
Prefix: list.Prefixes[i],
})
}
// fill contents
for _, obj := range list.Objects {
res.Contents = append(res.Contents, Object{
Key: obj.Name,
Size: obj.Size,
UserMetadata: obj.Headers,
LastModified: obj.Created.Format(time.RFC3339),
// ETag: "",
// Owner: Owner{},
// StorageClass: "",
})
}
if err := api.EncodeToResponse(w, res); err != nil {
h.log.Error("something went wrong",
zap.String("request_id", rid),
zap.Error(err))
api.WriteErrorResponse(r.Context(), w, api.Error{
Code: "XNeoFSUnimplemented",
Description: "implement me " + mux.CurrentRoute(r).GetName(),
HTTPStatusCode: http.StatusNotImplemented,
}, r.URL)
}
}
func parseListObjectArgs(r *http.Request) (*listObjectsArgs, error) {
var (
err error
res listObjectsArgs
)
if r.URL.Query().Get("max-keys") == "" {
res.MaxKeys = maxObjectList
} else if res.MaxKeys, err = strconv.Atoi(r.URL.Query().Get("max-keys")); err != nil {
return nil, api.GetAPIError(api.ErrInvalidMaxKeys)
}
res.Prefix = r.URL.Query().Get("prefix")
res.Marker = r.URL.Query().Get("key-marker")
res.Delimeter = r.URL.Query().Get("delimiter")
res.Encode = r.URL.Query().Get("encoding-type")
res.Version = r.URL.Query().Get("version-id-marker")
if info := api.GetReqInfo(r.Context()); info != nil {
res.Bucket = info.BucketName
}
return &res, nil
}