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[#328] Log error on failed response writing

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Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>
This commit is contained in:
Denis Kirillov 2024-03-04 15:53:00 +03:00
parent 6788306998
commit 62cc5a04a7
10 changed files with 94 additions and 34 deletions
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10
api/handler/cors.go
View file

@ -66,7 +66,10 @@ func (h *handler) PutBucketCorsHandler(w http.ResponseWriter, r *http.Request) {
return
}
middleware.WriteSuccessResponseHeadersOnly(w)
if err = middleware.WriteSuccessResponseHeadersOnly(w); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
}
func (h *handler) DeleteBucketCorsHandler(w http.ResponseWriter, r *http.Request) {
@ -200,7 +203,10 @@ func (h *handler) Preflight(w http.ResponseWriter, r *http.Request) {
if o != wildcard {
w.Header().Set(api.AccessControlAllowCredentials, "true")
}
middleware.WriteSuccessResponseHeadersOnly(w)
if err = middleware.WriteSuccessResponseHeadersOnly(w); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
return
}
}

5
api/handler/head.go
View file

@ -140,7 +140,10 @@ func (h *handler) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set(api.ContainerZone, bktInfo.Zone)
}
middleware.WriteResponse(w, http.StatusOK, nil, middleware.MimeNone)
if err = middleware.WriteResponse(w, http.StatusOK, nil, middleware.MimeNone); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
}
func (h *handler) setLockingHeaders(bktInfo *data.BucketInfo, lockInfo data.LockInfo, header http.Header) error {

5
api/handler/multipart_upload.go
View file

@ -266,7 +266,10 @@ func (h *handler) UploadPartHandler(w http.ResponseWriter, r *http.Request) {
}
w.Header().Set(api.ETag, data.Quote(hash))
middleware.WriteSuccessResponseHeadersOnly(w)
if err = middleware.WriteSuccessResponseHeadersOnly(w); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
}
func (h *handler) UploadPartCopy(w http.ResponseWriter, r *http.Request) {

21
api/handler/put.go
View file

@ -337,7 +337,10 @@ func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set(api.ETag, data.Quote(objInfo.ETag(h.cfg.MD5Enabled())))
middleware.WriteSuccessResponseHeadersOnly(w)
if err = middleware.WriteSuccessResponseHeadersOnly(w); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
}
func (h *handler) getBodyReader(r *http.Request) (io.ReadCloser, error) {
@ -602,7 +605,11 @@ func (h *handler) PostObject(w http.ResponseWriter, r *http.Request) {
ETag: data.Quote(objInfo.ETag(h.cfg.MD5Enabled())),
}
w.WriteHeader(status)
if _, err = w.Write(middleware.EncodeResponse(resp)); err != nil {
respData, err := middleware.EncodeResponse(resp)
if err != nil {
h.logAndSendError(w, "encode response", reqInfo, err)
}
if _, err = w.Write(respData); err != nil {
h.logAndSendError(w, "something went wrong", reqInfo, err)
}
return
@ -873,7 +880,10 @@ func (h *handler) createBucketHandlerPolicy(w http.ResponseWriter, r *http.Reque
return
}
middleware.WriteSuccessResponseHeadersOnly(w)
if err = middleware.WriteSuccessResponseHeadersOnly(w); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
}
func (h *handler) createBucketHandlerACL(w http.ResponseWriter, r *http.Request) {
@ -942,7 +952,10 @@ func (h *handler) createBucketHandlerACL(w http.ResponseWriter, r *http.Request)
return
}
middleware.WriteSuccessResponseHeadersOnly(w)
if err = middleware.WriteSuccessResponseHeadersOnly(w); err != nil {
h.logAndSendError(w, "write response", reqInfo, err)
return
}
}
const s3ActionPrefix = "s3:"

7
api/handler/util.go
View file

@ -31,9 +31,12 @@ func (h *handler) reqLogger(ctx context.Context) *zap.Logger {
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))
if code, wrErr := middleware.WriteErrorResponse(w, reqInfo, transformToS3Error(err)); wrErr != nil {
additional = append(additional, zap.NamedError("write_response_error", wrErr))
} else {
additional = append(additional, zap.Int("status", code))
}
fields := []zap.Field{
zap.Int("status", code),
zap.String("request_id", reqInfo.RequestID),
zap.String("method", reqInfo.API),
zap.String("bucket", reqInfo.BucketName),

8
api/middleware/auth.go
View file

@ -59,7 +59,9 @@ func Auth(center Center, log *zap.Logger) Func {
if _, ok := err.(apiErrors.Error); !ok {
err = apiErrors.GetAPIError(apiErrors.ErrAccessDenied)
}
WriteErrorResponse(w, GetReqInfo(r.Context()), err)
if _, wrErr := WriteErrorResponse(w, GetReqInfo(r.Context()), err); wrErr != nil {
reqLogOrDefault(ctx, log).Error(logs.FailedToWriteResponse, zap.Error(wrErr))
}
return
}
} else {
@ -97,7 +99,9 @@ func FrostfsIDValidation(frostfsID FrostFSIDValidator, log *zap.Logger) Func {
if err = validateBearerToken(frostfsID, bd.Gate.BearerToken); err != nil {
reqLogOrDefault(ctx, log).Error(logs.FrostfsIDValidationFailed, zap.Error(err))
WriteErrorResponse(w, GetReqInfo(r.Context()), err)
if _, wrErr := WriteErrorResponse(w, GetReqInfo(r.Context()), err); wrErr != nil {
reqLogOrDefault(ctx, log).Error(logs.FailedToWriteResponse, zap.Error(wrErr))
}
return
}

4
api/middleware/policy.go
View file

@ -47,7 +47,9 @@ func PolicyCheck(cfg PolicyConfig) Func {
ctx := r.Context()
if err := policyCheck(r, cfg); err != nil {
reqLogOrDefault(ctx, cfg.Log).Error(logs.PolicyValidationFailed, zap.Error(err))
WriteErrorResponse(w, GetReqInfo(ctx), err)
if _, wrErr := WriteErrorResponse(w, GetReqInfo(ctx), err); wrErr != nil {
reqLogOrDefault(ctx, cfg.Log).Error(logs.FailedToWriteResponse, zap.Error(wrErr))
}
return
}

53
api/middleware/response.go
View file

@ -118,7 +118,8 @@ var s3ErrorResponseMap = map[string]string{
}
// WriteErrorResponse writes error headers.
func WriteErrorResponse(w http.ResponseWriter, reqInfo *ReqInfo, err error) int {
// returns http error code and error in case of failure of response writing.
func WriteErrorResponse(w http.ResponseWriter, reqInfo *ReqInfo, err error) (int, error) {
code := http.StatusInternalServerError
if e, ok := err.(errors.Error); ok {
@ -134,9 +135,14 @@ func WriteErrorResponse(w http.ResponseWriter, reqInfo *ReqInfo, err error) int
// Generates error response.
errorResponse := getAPIErrorResponse(reqInfo, err)
encodedErrorResponse := EncodeResponse(errorResponse)
WriteResponse(w, code, encodedErrorResponse, MimeXML)
return code
encodedErrorResponse, err := EncodeResponse(errorResponse)
if err != nil {
return 0, fmt.Errorf("encode response: %w", err)
}
if err = WriteResponse(w, code, encodedErrorResponse, MimeXML); err != nil {
return 0, fmt.Errorf("write response: %w", err)
}
return code, nil
}
// Write http common headers.
@ -157,7 +163,7 @@ func removeSensitiveHeaders(h http.Header) {
}
// WriteResponse writes given statusCode and response into w (with mType header if set).
func WriteResponse(w http.ResponseWriter, statusCode int, response []byte, mType mimeType) {
func WriteResponse(w http.ResponseWriter, statusCode int, response []byte, mType mimeType) error {
setCommonHeaders(w)
if mType != MimeNone {
w.Header().Set(hdrContentType, string(mType))
@ -165,37 +171,46 @@ func WriteResponse(w http.ResponseWriter, statusCode int, response []byte, mType
w.Header().Set(hdrContentLength, strconv.Itoa(len(response)))
w.WriteHeader(statusCode)
if response == nil {
return
return nil
}
WriteResponseBody(w, response)
return WriteResponseBody(w, response)
}
// WriteResponseBody writes response into w.
func WriteResponseBody(w http.ResponseWriter, response []byte) {
_, _ = w.Write(response)
func WriteResponseBody(w http.ResponseWriter, response []byte) error {
if _, err := w.Write(response); err != nil {
return err
}
if flusher, ok := w.(http.Flusher); ok {
flusher.Flush()
}
return nil
}
// EncodeResponse encodes the response headers into XML format.
func EncodeResponse(response interface{}) []byte {
func EncodeResponse(response interface{}) ([]byte, error) {
var bytesBuffer bytes.Buffer
bytesBuffer.WriteString(xml.Header)
_ = xml.
NewEncoder(&bytesBuffer).
Encode(response)
return bytesBuffer.Bytes()
if err := xml.NewEncoder(&bytesBuffer).Encode(response); err != nil {
return nil, err
}
return bytesBuffer.Bytes(), nil
}
// EncodeResponseNoHeader encodes response without setting xml.Header.
// Should be used with periodicXMLWriter which sends xml.Header to the client
// with whitespaces to keep connection alive.
func EncodeResponseNoHeader(response interface{}) []byte {
func EncodeResponseNoHeader(response interface{}) ([]byte, error) {
var bytesBuffer bytes.Buffer
_ = xml.NewEncoder(&bytesBuffer).Encode(response)
return bytesBuffer.Bytes()
if err := xml.NewEncoder(&bytesBuffer).Encode(response); err != nil {
return nil, err
}
return bytesBuffer.Bytes(), nil
}
// EncodeToResponse encodes the response into ResponseWriter.
@ -227,8 +242,8 @@ func EncodeToResponseNoHeader(w http.ResponseWriter, response interface{}) error
// WriteSuccessResponseHeadersOnly writes HTTP (200) OK response with no data
// to the client.
func WriteSuccessResponseHeadersOnly(w http.ResponseWriter) {
WriteResponse(w, http.StatusOK, nil, MimeNone)
func WriteSuccessResponseHeadersOnly(w http.ResponseWriter) error {
return WriteResponse(w, http.StatusOK, nil, MimeNone)
}
// Error -- Returns S3 error string.

14
api/router.go
View file

@ -178,14 +178,24 @@ func errorResponseHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := s3middleware.GetReqInfo(ctx)
desc := fmt.Sprintf("Unknown API request at %s", r.URL.Path)
s3middleware.WriteErrorResponse(w, reqInfo, errors.Error{
_, wrErr := s3middleware.WriteErrorResponse(w, reqInfo, errors.Error{
Code: "UnknownAPIRequest",
Description: desc,
HTTPStatusCode: http.StatusBadRequest,
})
if log := s3middleware.GetReqLog(ctx); log != nil {
log.Error(logs.RequestUnmatched, zap.String("method", reqInfo.API), zap.String("http method", r.Method), zap.String("url", r.RequestURI))
fields := []zap.Field{
zap.String("method", reqInfo.API),
zap.String("http method", r.Method),
zap.String("url", r.RequestURI),
}
if wrErr != nil {
fields = append(fields, zap.NamedError("write_response_error", wrErr))
}
log.Error(logs.RequestUnmatched, fields...)
}
}

1
internal/logs/logs.go
View file

@ -149,4 +149,5 @@ const (
FailedToGenerateRequestID = "failed to generate request id"
InvalidBucketObjectLockEnabledHeader = "invalid X-Amz-Bucket-Object-Lock-Enabled header"
InvalidTreeKV = "invalid tree service meta KV"
FailedToWriteResponse = "failed to write response"
)