Adding upstream version 1.34.4.

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

plugins/processors/streamingprocessor.go

@@ -0,0 +1,61 @@
+package processors
+
+import (
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/models"
+)
+
+// NewStreamingProcessorFromProcessor is a converter that turns a standard
+// processor into a streaming processor
+func NewStreamingProcessorFromProcessor(p telegraf.Processor) telegraf.StreamingProcessor {
+	sp := &streamingProcessor{
+		processor: p,
+	}
+	return sp
+}
+
+type streamingProcessor struct {
+	processor telegraf.Processor
+	acc       telegraf.Accumulator
+	Log       telegraf.Logger
+}
+
+func (sp *streamingProcessor) SampleConfig() string {
+	return sp.processor.SampleConfig()
+}
+
+func (sp *streamingProcessor) Start(acc telegraf.Accumulator) error {
+	sp.acc = acc
+	return nil
+}
+
+func (sp *streamingProcessor) Add(m telegraf.Metric, acc telegraf.Accumulator) error {
+	for _, m := range sp.processor.Apply(m) {
+		acc.AddMetric(m)
+	}
+	return nil
+}
+
+func (*streamingProcessor) Stop() {
+}
+
+// Make the streamingProcessor of type Initializer to be able
+// to call the Init method of the wrapped processor if
+// needed
+func (sp *streamingProcessor) Init() error {
+	models.SetLoggerOnPlugin(sp.processor, sp.Log)
+	if p, ok := sp.processor.(telegraf.Initializer); ok {
+		err := p.Init()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Unwrap lets you retrieve the original telegraf.Processor from the
+// StreamingProcessor. This is necessary because the toml Unmarshaller won't
+// look inside composed types.
+func (sp *streamingProcessor) Unwrap() telegraf.Processor {
+	return sp.processor
+}