x

internal/mcp/error.go

@@ -0,0 +1,55 @@
+package mcp
+
+import (
+	"fmt"
+)
+
+// enum ErrorCode {
+// 	// Standard JSON-RPC error codes
+// 	ParseError = -32700,
+// 	InvalidRequest = -32600,
+// 	MethodNotFound = -32601,
+// 	InvalidParams = -32602,
+// 	InternalError = -32603
+// }
+
+// Error
+type Error struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+var (
+	ErrParseError     = &Error{Code: -32700, Message: "Parse error"}
+	ErrInvalidRequest = &Error{Code: -32600, Message: "Invalid Request"}
+	ErrMethodNotFound = &Error{Code: -32601, Message: "Method not found"}
+	ErrInvalidParams  = &Error{Code: -32602, Message: "Invalid params"}
+	ErrInternalError  = &Error{Code: -32603, Message: "Internal error"}
+
+	ErrInvalidSessionID = &Error{Code: 400, Message: "Invalid session ID"}
+	ErrSessionNotFound  = &Error{Code: 404, Message: "Could not find session"}
+	ErrTooManyRequests  = &Error{Code: 429, Message: "Too many requests"}
+)
+
+func (e *Error) Error() string {
+	return fmt.Sprintf("%d: %s", e.Code, e.Message)
+}
+
+func (e *Error) JsonRPC() Response {
+	return Response{
+		JsonRPC: JsonRPCVersion,
+		Error:   e,
+	}
+}
+
+func NewErrorResponse(id interface{}, code int, err error) *Response {
+	return &Response{
+		JsonRPC: JsonRPCVersion,
+		ID:      id,
+		Error: &Error{
+			Code:    code,
+			Message: err.Error(),
+		},
+	}
+}