fix: add error code no such process

This error code will be returned when trying to stop a
non-existing checksum hash.

Longhorn 10563

Signed-off-by: Shuo Wu <shuo.wu@suse.com>

Author: shuo-wu

pkg/jsonrpc/types.go

@@ -27,8 +27,9 @@ type RespErrorMsg string
 type RespErrorCode int32
 
 const (
-	RespErrorCodeNoFileExists = -17
-	RespErrorCodeNoSuchDevice = -19
+	RespErrorCodeNoSuchProcess = -3
+	RespErrorCodeNoFileExists  = -17
+	RespErrorCodeNoSuchDevice  = -19
 )
 
 type Response struct {
@@ -59,6 +60,19 @@ func (re JSONClientError) Error() string {
 		re.ID, re.Method, re.Params, re.ErrorDetail)
 }
 
+func IsJSONRPCRespErrorNoSuchProcess(err error) bool {
+	jsonRPCError, ok := err.(JSONClientError)
+	if !ok {
+		return false
+	}
+	responseError, ok := jsonRPCError.ErrorDetail.(*ResponseError)
+	if !ok {
+		return false
+	}
+
+	return responseError.Code == RespErrorCodeNoSuchProcess
+}
+
 func IsJSONRPCRespErrorNoSuchDevice(err error) bool {
 	jsonRPCError, ok := err.(JSONClientError)
 	if !ok {