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Add more context to rpc version mismatch errors (#8271)

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Fixes #5665
This commit is contained in:
Praveen raj Mani 2019-10-03 12:38:12 +05:30 committed by Harshavardhana
parent 83066f953c
commit e48005ddc7
7 changed files with 36 additions and 4 deletions
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2
cmd/admin-router.go
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@ -142,5 +142,5 @@ func registerAdminRouter(router *mux.Router, enableConfigOps, enableIAMOps bool)
adminV1Router.Methods(http.MethodGet).Path("/kms/key/status").HandlerFunc(httpTraceAll(adminAPI.KMSKeyStatusHandler))
// If none of the routes match, return error.
adminV1Router.NotFoundHandler = http.HandlerFunc(httpTraceHdrs(notFoundHandlerJSON))
adminV1Router.MethodNotAllowedHandler = http.HandlerFunc(httpTraceAll(versionMismatchHandler))
}

6
cmd/api-errors.go
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@ -141,6 +141,7 @@ const (
ErrInvalidPrefixMarker
ErrBadRequest
ErrKeyTooLongError
ErrInvalidAPIVersion
// Add new error codes here.
// SSE-S3 related API errors
@ -1502,6 +1503,11 @@ var errorCodes = errorCodeMap{
Description: "Invalid according to Policy: Policy Condition failed",
HTTPStatusCode: http.StatusForbidden,
},
ErrInvalidAPIVersion: {
Code: "ErrInvalidAPIVersion",
Description: "Invalid version found in the request",
HTTPStatusCode: http.StatusNotFound,
},
// Add your error structure here.
}

11
cmd/api-response.go
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@ -703,6 +703,17 @@ func writeErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIE
writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeJSON)
}
// writeVersionMismatchResponse - writes custom error responses for version mismatches.
func writeVersionMismatchResponse(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL, isJSON bool) {
if isJSON {
// Generate error response.
errorResponse := getAPIErrorResponse(ctx, err, reqURL.String(), w.Header().Get(xhttp.AmzRequestID), globalDeploymentID)
writeResponse(w, err.HTTPStatusCode, encodeResponseJSON(errorResponse), mimeJSON)
} else {
writeResponse(w, err.HTTPStatusCode, []byte(err.Description), mimeNone)
}
}
// writeCustomErrorResponseJSON - similar to writeErrorResponseJSON,
// but accepts the error message directly (this allows messages to be
// dynamically generated.)

15
cmd/handler-utils.go
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@ -385,6 +385,21 @@ func notFoundHandler(w http.ResponseWriter, r *http.Request) {
writeErrorResponse(context.Background(), w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
}
// If the API version does not match with current version.
func versionMismatchHandler(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
switch {
case strings.HasPrefix(path, minioReservedBucketPath+"/peer/"):
writeVersionMismatchResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInvalidAPIVersion), r.URL, false)
case strings.HasPrefix(path, minioReservedBucketPath+"/storage/"):
writeVersionMismatchResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInvalidAPIVersion), r.URL, false)
case strings.HasPrefix(path, minioReservedBucketPath+"/lock/"):
writeVersionMismatchResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInvalidAPIVersion), r.URL, false)
default:
writeVersionMismatchResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInvalidAPIVersion), r.URL, true)
}
}
// gets host name for current node
func getHostName(r *http.Request) (hostName string) {
if globalIsDistXL {

2
cmd/lock-rest-server.go
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@ -255,7 +255,7 @@ func registerLockRESTHandlers(router *mux.Router) {
subrouter.Methods(http.MethodPost).Path(SlashSeparator + lockRESTMethodForceUnlock).HandlerFunc(httpTraceHdrs(globalLockServer.ForceUnlockHandler)).Queries(queries...)
subrouter.Methods(http.MethodPost).Path(SlashSeparator + lockRESTMethodExpired).HandlerFunc(httpTraceAll(globalLockServer.ExpiredHandler)).Queries(queries...)
router.NotFoundHandler = http.HandlerFunc(httpTraceAll(notFoundHandler))
router.MethodNotAllowedHandler = http.HandlerFunc(httpTraceAll(versionMismatchHandler))
// Start lock maintenance from all lock servers.
go startLockMaintenance(globalLockServer)

2
cmd/peer-rest-server.go
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@ -1007,5 +1007,5 @@ func registerPeerRESTHandlers(router *mux.Router) {
subrouter.Methods(http.MethodPost).Path(SlashSeparator + peerRESTMethodBackgroundHealStatus).HandlerFunc(server.BackgroundHealStatusHandler)
subrouter.Methods(http.MethodPost).Path(SlashSeparator + peerRESTMethodLog).HandlerFunc(server.ConsoleLogHandler)
router.NotFoundHandler = http.HandlerFunc(httpTraceAll(notFoundHandler))
router.MethodNotAllowedHandler = http.HandlerFunc(httpTraceAll(versionMismatchHandler))
}

2
cmd/storage-rest-server.go
View File

@ -617,5 +617,5 @@ func registerStorageRESTHandlers(router *mux.Router, endpoints EndpointList) {
subrouter.Methods(http.MethodPost).Path(SlashSeparator + storageRESTMethodGetInstanceID).HandlerFunc(httpTraceAll(server.GetInstanceID))
}
router.NotFoundHandler = http.HandlerFunc(httpTraceAll(notFoundHandler))
router.MethodNotAllowedHandler = http.HandlerFunc(httpTraceAll(versionMismatchHandler))
}