Adding upstream version 1.34.4.

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

plugins/inputs/multifile/multifile.go

@@ -0,0 +1,116 @@
+//go:generate ../../../tools/readme_config_includer/generator
+package multifile
+
+import (
+	"bytes"
+	_ "embed"
+	"fmt"
+	"math"
+	"os"
+	"path"
+	"strconv"
+	"time"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/inputs"
+)
+
+//go:embed sample.conf
+var sampleConfig string
+
+type MultiFile struct {
+	BaseDir   string `toml:"base_dir"`
+	FailEarly bool   `toml:"fail_early"`
+	Files     []file `toml:"file"`
+}
+
+type file struct {
+	Name       string `toml:"file"`
+	Dest       string `toml:"dest"`
+	Conversion string `toml:"conversion"`
+}
+
+func (*MultiFile) SampleConfig() string {
+	return sampleConfig
+}
+
+func (m *MultiFile) Init() error {
+	for i, file := range m.Files {
+		if m.BaseDir != "" {
+			m.Files[i].Name = path.Join(m.BaseDir, file.Name)
+		}
+		if file.Dest == "" {
+			m.Files[i].Dest = path.Base(file.Name)
+		}
+	}
+	return nil
+}
+
+func (m *MultiFile) Gather(acc telegraf.Accumulator) error {
+	now := time.Now()
+	fields := make(map[string]interface{})
+	tags := make(map[string]string)
+
+	for _, file := range m.Files {
+		fileContents, err := os.ReadFile(file.Name)
+
+		if err != nil {
+			if m.FailEarly {
+				return err
+			}
+			continue
+		}
+
+		vStr := string(bytes.TrimSpace(bytes.Trim(fileContents, "\x00")))
+
+		if file.Conversion == "tag" {
+			tags[file.Dest] = vStr
+			continue
+		}
+
+		var value interface{}
+
+		var d int
+		if _, errfmt := fmt.Sscanf(file.Conversion, "float(%d)", &d); errfmt == nil || file.Conversion == "float" {
+			var v float64
+			v, err = strconv.ParseFloat(vStr, 64)
+			value = v / math.Pow10(d)
+		}
+
+		if file.Conversion == "int" {
+			value, err = strconv.ParseInt(vStr, 10, 64)
+		}
+
+		if file.Conversion == "string" || file.Conversion == "" {
+			value = vStr
+		}
+
+		if file.Conversion == "bool" {
+			value, err = strconv.ParseBool(vStr)
+		}
+
+		if err != nil {
+			if m.FailEarly {
+				return err
+			}
+			continue
+		}
+
+		if value == nil {
+			return fmt.Errorf("invalid conversion %v", file.Conversion)
+		}
+
+		fields[file.Dest] = value
+	}
+
+	acc.AddGauge("multifile", fields, tags, now)
+	return nil
+}
+
+func init() {
+	inputs.Add("multifile", func() telegraf.Input {
+		return &MultiFile{
+			FailEarly: true,
+		}
+	})
+}