Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/serializers/msgpack/msgpack.go

@@ -0,0 +1,47 @@
+package msgpack
+
+import (
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/serializers"
+)
+
+// Serializer encodes metrics in MessagePack format
+type Serializer struct{}
+
+func marshalMetric(buf []byte, metric telegraf.Metric) ([]byte, error) {
+	return (&Metric{
+		Name:   metric.Name(),
+		Time:   MessagePackTime{time: metric.Time()},
+		Tags:   metric.Tags(),
+		Fields: metric.Fields(),
+	}).MarshalMsg(buf)
+}
+
+// Serialize implements serializers.Serializer.Serialize
+// github.com/influxdata/telegraf/plugins/serializers/Serializer
+func (*Serializer) Serialize(metric telegraf.Metric) ([]byte, error) {
+	return marshalMetric(nil, metric)
+}
+
+// SerializeBatch implements serializers.Serializer.SerializeBatch
+// github.com/influxdata/telegraf/plugins/serializers/Serializer
+func (*Serializer) SerializeBatch(metrics []telegraf.Metric) ([]byte, error) {
+	buf := make([]byte, 0)
+	for _, m := range metrics {
+		var err error
+		buf, err = marshalMetric(buf, m)
+
+		if err != nil {
+			return nil, err
+		}
+	}
+	return buf, nil
+}
+
+func init() {
+	serializers.Add("msgpack",
+		func() telegraf.Serializer {
+			return &Serializer{}
+		},
+	)
+}