Adding upstream version 1.34.4.

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

migrations/inputs_sflow/migration.go

@@ -0,0 +1,68 @@
+package inputs_sflow
+
+import (
+	"fmt"
+
+	"github.com/influxdata/toml"
+	"github.com/influxdata/toml/ast"
+
+	"github.com/influxdata/telegraf/migrations"
+	"github.com/influxdata/telegraf/migrations/common"
+)
+
+const msg = `
+    Replacement 'inputs.netflow' will output a different metric format.
+	Please adapt your queries!
+`
+
+// Define "old" data structure
+type sflow struct {
+	ServiceAddress string `toml:"service_address"`
+	ReadBufferSize string `toml:"read_buffer_size"`
+	common.InputOptions
+}
+
+// Migration function
+func migrate(tbl *ast.Table) ([]byte, string, error) {
+	// Decode the old data structure
+	var old sflow
+	if err := toml.UnmarshalTable(tbl, &old); err != nil {
+		return nil, "", err
+	}
+
+	// Fill common options
+	plugin := make(map[string]interface{})
+	old.InputOptions.Migrate()
+	general, err := toml.Marshal(old.InputOptions)
+	if err != nil {
+		return nil, "", fmt.Errorf("marshalling general options failed: %w", err)
+	}
+	if err := toml.Unmarshal(general, &plugin); err != nil {
+		return nil, "", fmt.Errorf("re-unmarshalling general options failed: %w", err)
+	}
+
+	// Use a map for the new plugin and fill in the data
+	plugin["service_address"] = old.ServiceAddress
+	if old.ReadBufferSize != "" {
+		plugin["read_buffer_size"] = old.ReadBufferSize
+	}
+
+	// Create the corresponding metric configurations
+	cfg := migrations.CreateTOMLStruct("inputs", "netflow")
+	cfg.Add("inputs", "netflow", plugin)
+
+	// Marshal the new configuration
+	buf, err := toml.Marshal(cfg)
+	if err != nil {
+		return nil, "", err
+	}
+	buf = append(buf, []byte("\n")...)
+
+	// Create the new content to output
+	return buf, msg, nil
+}
+
+// Register the migration function for the plugin type
+func init() {
+	migrations.AddPluginMigration("inputs.sflow", migrate)
+}