1 files changed, 29 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/systemdunits/init.go b/src/go/collectors/go.d.plugin/modules/systemdunits/init.go
new file mode 100644
index 000000000..e59290ace
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/systemdunits/init.go
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+//go:build linux
+// +build linux
+
+package systemdunits
+
+import (
+	"errors"
+	"strings"
+
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/matcher"
+)
+
+func (s *SystemdUnits) validateConfig() error {
+	if len(s.Include) == 0 {
+		return errors.New("'include' option not set")
+	}
+	return nil
+}
+
+func (s *SystemdUnits) initSelector() (matcher.Matcher, error) {
+	if len(s.Include) == 0 {
+		return matcher.TRUE(), nil
+	}
+
+	expr := strings.Join(s.Include, " ")
+	return matcher.NewSimplePatternsMatcher(expr)
+}