service backend

api/fx/ingestor/internal/fmerrors/market.go

@@ -0,0 +1,35 @@
+package fmerrors
+
+type Error struct {
+	message string
+	cause   error
+}
+
+func (e *Error) Error() string {
+	if e == nil {
+		return ""
+	}
+	if e.cause == nil {
+		return e.message
+	}
+	return e.message + ": " + e.cause.Error()
+}
+
+func (e *Error) Unwrap() error {
+	if e == nil {
+		return nil
+	}
+	return e.cause
+}
+
+func New(message string) error {
+	return &Error{message: message}
+}
+
+func Wrap(message string, cause error) error {
+	return &Error{message: message, cause: cause}
+}
+
+func NewDecimal(value string) error {
+	return &Error{message: "invalid decimal \"" + value + "\""}
+}