Add example for collector

collectors/likwid.go

@@ -0,0 +1,64 @@
+package collectors
+
+import (
+	"bytes"
+	"fmt"
+	"time"
+
+	protocol "github.com/influxdata/line-protocol"
+)
+
+type LikwidCollector struct {
+	name    string
+	tags    []*protocol.Tag
+	fields  []*protocol.Field
+	t       time.Time
+	encoder *protocol.Encoder
+}
+
+func (c *LikwidCollector) Name() string {
+	return c.name
+}
+func (c *LikwidCollector) TagList() []*protocol.Tag {
+	return c.tags
+}
+
+func (c *LikwidCollector) FieldList() []*protocol.Field {
+	return c.fields
+}
+
+func (c *LikwidCollector) Time() time.Time {
+	return c.t
+}
+
+func (c *LikwidCollector) New() {
+	buf := &bytes.Buffer{}
+	c.encoder = protocol.NewEncoder(buf)
+	c.encoder.SetMaxLineBytes(1024)
+}
+
+func (c *LikwidCollector) Start(
+	level string,
+	frequency time.Duration,
+	duration int) {
+	ticker := time.NewTicker(frequency * time.Second)
+	done := make(chan bool)
+
+	go func() {
+		for {
+			select {
+			case <-done:
+				return
+			case t := <-ticker.C:
+				fmt.Println("Tick at", t)
+
+				c.encoder.Encode(c)
+			}
+		}
+	}()
+
+	time.Sleep(1600 * time.Second)
+	ticker.Stop()
+	done <- true
+	fmt.Println("Ticker stopped")
+}

go.mod

@@ -0,0 +1,5 @@
+module github.com/ClusterCockpit/cc-metric-collector
+
+go 1.16
+
+require github.com/influxdata/line-protocol v0.0.0-20210311194329-9aa0e372d097

go.sum

@@ -0,0 +1,2 @@
+github.com/influxdata/line-protocol v0.0.0-20210311194329-9aa0e372d097 h1:vilfsDSy7TDxedi9gyBkMvAirat/oRcL0lFdJBf6tdM=
+github.com/influxdata/line-protocol v0.0.0-20210311194329-9aa0e372d097/go.mod h1:xaLFMmpvUxqXtVkUJfg9QmT88cDaCJ3ZKgdZ78oO8Qo=