Small refactoring

1 files changed, 42 insertions, 0 deletions

diff --git a/rpc/errors.go b/rpc/errors.go
new file mode 100644
index 0000000..1af84ee
--- /dev/null
+++ b/rpc/errors.go
@@ -0,0 +1,42 @@
+package rpc
+
+import "fmt"
+
+const (
+	ErrCodeParseError     = -32700
+	ErrCodeInvalidRequest = -32600
+	ErrCodeMethodNotFound = -32601
+	ErrCodeInvalidParams  = -32602
+	ErrCodeInternalError  = -32603
+	ErrUser               = -32000
+)
+
+var errorMap = map[int]string{
+	-32700: "Parse error",      // Invalid JSON was received by the server. An error occurred on the server while parsing the JSON text.
+	-32600: "Invalid Request",  // The JSON sent is not a valid Request object.
+	-32601: "Method not found", // The method does not exist / is not available.
+	-32602: "Invalid params",   // Invalid method parameter(s).
+	-32603: "Internal error",   // Internal JSON-RPC error.
+	-32000: "Other error",
+}
+
+//-32000 to -32099 	RpcServer error 	Reserved for implementation-defined server-errors.
+
+type Error struct {
+	Code    int    `json:"code"`
+	Message string `json:"message"`
+}
+
+func (e Error) Error() string {
+	return fmt.Sprintf("jsonrpc2 error: code: %d message: %s", e.Code, e.Message)
+}
+
+func NewError(code int) Error {
+	if _, ok := errorMap[code]; ok {
+		return Error{
+			Code:    code,
+			Message: errorMap[code],
+		}
+	}
+	return Error{Code: code}
+}