frostfs-s3-gw/api/handler/util.go

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package handler
import (
"context"
"errors"
"fmt"
"net/http"
"strconv"
"strings"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
s3errors "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/errors"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/middleware"
frosterrors "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/frostfs/errors"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
"go.opentelemetry.io/otel/trace"
"go.uber.org/zap"
)
func (h *handler) reqLogger(ctx context.Context) *zap.Logger {
reqLogger := middleware.GetReqLog(ctx)
if reqLogger != nil {
return reqLogger
}
return h.log
}
func (h *handler) logAndSendError(w http.ResponseWriter, logText string, reqInfo *middleware.ReqInfo, err error, additional ...zap.Field) {
err = handleDeleteMarker(w, err)
code := middleware.WriteErrorResponse(w, reqInfo, transformToS3Error(err))
fields := []zap.Field{
zap.Int("status", code),
zap.String("request_id", reqInfo.RequestID),
zap.String("method", reqInfo.API),
zap.String("bucket", reqInfo.BucketName),
zap.String("object", reqInfo.ObjectName),
zap.String("description", logText),
zap.Error(err)}
fields = append(fields, additional...)
if traceID, err := trace.TraceIDFromHex(reqInfo.TraceID); err == nil && traceID.IsValid() {
fields = append(fields, zap.String("trace_id", reqInfo.TraceID))
}
h.log.Error(logs.RequestFailed, fields...) // consider using h.reqLogger (it requires accept context.Context or http.Request)
}
func handleDeleteMarker(w http.ResponseWriter, err error) error {
var target layer.DeleteMarkerError
if !errors.As(err, &target) {
return err
}
w.Header().Set(api.AmzDeleteMarker, "true")
return fmt.Errorf("%w: %s", s3errors.GetAPIError(target.ErrorCode), err)
}
func (h *handler) logAndSendErrorNoHeader(w http.ResponseWriter, logText string, reqInfo *middleware.ReqInfo, err error, additional ...zap.Field) {
middleware.WriteErrorResponseNoHeader(w, reqInfo, transformToS3Error(err))
fields := []zap.Field{
zap.String("request_id", reqInfo.RequestID),
zap.String("method", reqInfo.API),
zap.String("bucket", reqInfo.BucketName),
zap.String("object", reqInfo.ObjectName),
zap.String("description", logText),
zap.Error(err)}
fields = append(fields, additional...)
if traceID, err := trace.TraceIDFromHex(reqInfo.TraceID); err == nil && traceID.IsValid() {
fields = append(fields, zap.String("trace_id", reqInfo.TraceID))
}
h.log.Error(logs.RequestFailed, fields...) // consider using h.reqLogger (it requires accept context.Context or http.Request)
}
func transformToS3Error(err error) error {
err = frosterrors.UnwrapErr(err) // this wouldn't work with errors.Join
if _, ok := err.(s3errors.Error); ok {
return err
}
if errors.Is(err, layer.ErrAccessDenied) ||
errors.Is(err, layer.ErrNodeAccessDenied) {
return s3errors.GetAPIError(s3errors.ErrAccessDenied)
}
if errors.Is(err, layer.ErrGatewayTimeout) {
return s3errors.GetAPIError(s3errors.ErrGatewayTimeout)
}
return s3errors.GetAPIError(s3errors.ErrInternalError)
}
func (h *handler) ResolveBucket(ctx context.Context, bucket string) (*data.BucketInfo, error) {
return h.obj.GetBucketInfo(ctx, bucket)
}
func (h *handler) getBucketAndCheckOwner(r *http.Request, bucket string, header ...string) (*data.BucketInfo, error) {
bktInfo, err := h.obj.GetBucketInfo(r.Context(), bucket)
if err != nil {
return nil, err
}
var expected string
if len(header) == 0 {
expected = r.Header.Get(api.AmzExpectedBucketOwner)
} else {
expected = r.Header.Get(header[0])
}
if len(expected) == 0 {
return bktInfo, nil
}
return bktInfo, checkOwner(bktInfo, expected)
}
func parseRange(s string) (*layer.RangeParams, error) {
if s == "" {
return nil, nil
}
prefix := "bytes="
if !strings.HasPrefix(s, prefix) {
return nil, s3errors.GetAPIError(s3errors.ErrInvalidRange)
}
s = strings.TrimPrefix(s, prefix)
valuesStr := strings.Split(s, "-")
if len(valuesStr) != 2 {
return nil, s3errors.GetAPIError(s3errors.ErrInvalidRange)
}
values := make([]uint64, 0, len(valuesStr))
for _, v := range valuesStr {
num, err := strconv.ParseUint(v, 10, 64)
if err != nil {
return nil, s3errors.GetAPIError(s3errors.ErrInvalidRange)
}
values = append(values, num)
}
if values[0] > values[1] {
return nil, s3errors.GetAPIError(s3errors.ErrInvalidRange)
}
return &layer.RangeParams{
Start: values[0],
End: values[1],
}, nil
}
func getSessionTokenSetEACL(ctx context.Context) (*session.Container, error) {
boxData, err := middleware.GetBoxData(ctx)
if err != nil {
return nil, err
}
sessionToken := boxData.Gate.SessionTokenForSetEACL()
if sessionToken == nil {
return nil, s3errors.GetAPIError(s3errors.ErrAccessDenied)
}
return sessionToken, nil
}