1 files changed, 63 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/example/init.go b/src/go/collectors/go.d.plugin/modules/example/init.go
new file mode 100644
index 000000000..6ee39ef4f
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/example/init.go
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package example
+
+import (
+	"errors"
+	"github.com/netdata/netdata/go/go.d.plugin/agent/module"
+)
+
+func (e *Example) validateConfig() error {
+	if e.Config.Charts.Num <= 0 && e.Config.HiddenCharts.Num <= 0 {
+		return errors.New("'charts->num' or `hidden_charts->num` must be > 0")
+	}
+	if e.Config.Charts.Num > 0 && e.Config.Charts.Dims <= 0 {
+		return errors.New("'charts->dimensions' must be > 0")
+	}
+	if e.Config.HiddenCharts.Num > 0 && e.Config.HiddenCharts.Dims <= 0 {
+		return errors.New("'hidden_charts->dimensions' must be > 0")
+	}
+	return nil
+}
+
+func (e *Example) initCharts() (*module.Charts, error) {
+	charts := &module.Charts{}
+
+	var ctx int
+	v := calcContextEvery(e.Config.Charts.Num, e.Config.Charts.Contexts)
+	for i := 0; i < e.Config.Charts.Num; i++ {
+		if i != 0 && v != 0 && ctx < (e.Config.Charts.Contexts-1) && i%v == 0 {
+			ctx++
+		}
+		chart := newChart(i, ctx, e.Config.Charts.Labels, module.ChartType(e.Config.Charts.Type))
+
+		if err := charts.Add(chart); err != nil {
+			return nil, err
+		}
+	}
+
+	ctx = 0
+	v = calcContextEvery(e.Config.HiddenCharts.Num, e.Config.HiddenCharts.Contexts)
+	for i := 0; i < e.Config.HiddenCharts.Num; i++ {
+		if i != 0 && v != 0 && ctx < (e.Config.HiddenCharts.Contexts-1) && i%v == 0 {
+			ctx++
+		}
+		chart := newHiddenChart(i, ctx, e.Config.HiddenCharts.Labels, module.ChartType(e.Config.HiddenCharts.Type))
+
+		if err := charts.Add(chart); err != nil {
+			return nil, err
+		}
+	}
+
+	return charts, nil
+}
+
+func calcContextEvery(charts, contexts int) int {
+	if contexts <= 1 {
+		return 0
+	}
+	if contexts > charts {
+		return 1
+	}
+	return charts / contexts
+}