Adding upstream version 1.34.4.

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

plugins/common/shim/output.go

@@ -0,0 +1,54 @@
+package shim
+
+import (
+	"bufio"
+	"fmt"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/models"
+	"github.com/influxdata/telegraf/plugins/parsers/influx"
+)
+
+// AddOutput adds the input to the shim. Later calls to Run() will run this.
+func (s *Shim) AddOutput(output telegraf.Output) error {
+	models.SetLoggerOnPlugin(output, s.Log())
+	if p, ok := output.(telegraf.Initializer); ok {
+		err := p.Init()
+		if err != nil {
+			return fmt.Errorf("failed to init input: %w", err)
+		}
+	}
+
+	s.Output = output
+	return nil
+}
+
+func (s *Shim) RunOutput() error {
+	parser := influx.Parser{}
+	err := parser.Init()
+	if err != nil {
+		return fmt.Errorf("failed to create new parser: %w", err)
+	}
+
+	err = s.Output.Connect()
+	if err != nil {
+		return fmt.Errorf("failed to start processor: %w", err)
+	}
+	defer s.Output.Close()
+
+	var m telegraf.Metric
+
+	scanner := bufio.NewScanner(s.stdin)
+	for scanner.Scan() {
+		m, err = parser.ParseLine(scanner.Text())
+		if err != nil {
+			fmt.Fprintf(s.stderr, "Failed to parse metric: %s\n", err)
+			continue
+		}
+		if err = s.Output.Write([]telegraf.Metric{m}); err != nil {
+			fmt.Fprintf(s.stderr, "Failed to write metric: %s\n", err)
+		}
+	}
+
+	return nil
+}