Initial cloud-services repo - gateway service + pkg modules

pkg/dbc/state/errors.go

@@ -0,0 +1,17 @@
+package state
+
+import (
+	"github.com/pkg/errors"
+)
+
+func IncorrectSignalsLength(expected int, received int) error {
+	return errors.Errorf("incorrect number of signals in message expected %d received %d", expected, received)
+}
+
+func IncorrectSignalError(expected string, received string) error {
+	return errors.Errorf("wrong signal in message expected %s received %s", expected, received)
+}
+
+func IncorrectSignalValue(expected interface{}, received interface{}) error {
+	return errors.Errorf("wrong value in message expected one of %v received %v", expected, received)
+}