Adding upstream version 1.34.4.

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

plugins/common/starlark/logging.go

@@ -0,0 +1,48 @@
+package starlark
+
+import (
+	"errors"
+	"fmt"
+
+	"go.starlark.net/starlark"
+	"go.starlark.net/starlarkstruct"
+
+	"github.com/influxdata/telegraf"
+)
+
+// Builds a module that defines all the supported logging functions which will log using the provided logger
+func LogModule(logger telegraf.Logger) *starlarkstruct.Module {
+	var logFunc = func(_ *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
+		return log(b, args, kwargs, logger)
+	}
+	return &starlarkstruct.Module{
+		Name: "log",
+		Members: starlark.StringDict{
+			"debug": starlark.NewBuiltin("log.debug", logFunc),
+			"info":  starlark.NewBuiltin("log.info", logFunc),
+			"warn":  starlark.NewBuiltin("log.warn", logFunc),
+			"error": starlark.NewBuiltin("log.error", logFunc),
+		},
+	}
+}
+
+// Logs the provided message according to the level chosen
+func log(b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple, logger telegraf.Logger) (starlark.Value, error) {
+	var msg starlark.String
+	if err := starlark.UnpackPositionalArgs(b.Name(), args, kwargs, 1, &msg); err != nil {
+		return starlark.None, fmt.Errorf("%s: %w", b.Name(), err)
+	}
+	switch b.Name() {
+	case "log.debug":
+		logger.Debug(string(msg))
+	case "log.info":
+		logger.Info(string(msg))
+	case "log.warn":
+		logger.Warn(string(msg))
+	case "log.error":
+		logger.Error(string(msg))
+	default:
+		return nil, errors.New("method " + b.Name() + " is unknown")
+	}
+	return starlark.None, nil
+}