Adding upstream version 1.34.4.

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

plugins/inputs/powerdns_recursor/powerdns_recursor.go

@@ -0,0 +1,84 @@
+//go:generate ../../../tools/readme_config_includer/generator
+package powerdns_recursor
+
+import (
+	_ "embed"
+	"fmt"
+	"strconv"
+	"time"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/inputs"
+)
+
+//go:embed sample.conf
+var sampleConfig string
+
+const defaultTimeout = 5 * time.Second
+
+type PowerdnsRecursor struct {
+	UnixSockets            []string `toml:"unix_sockets"`
+	SocketDir              string   `toml:"socket_dir"`
+	SocketMode             string   `toml:"socket_mode"`
+	ControlProtocolVersion int      `toml:"control_protocol_version"`
+
+	Log telegraf.Logger `toml:"-"`
+
+	mode             uint32
+	gatherFromServer func(address string, acc telegraf.Accumulator) error
+}
+
+func (*PowerdnsRecursor) SampleConfig() string {
+	return sampleConfig
+}
+
+func (p *PowerdnsRecursor) Init() error {
+	if p.SocketMode != "" {
+		mode, err := strconv.ParseUint(p.SocketMode, 8, 32)
+		if err != nil {
+			return fmt.Errorf("could not parse socket_mode: %w", err)
+		}
+
+		p.mode = uint32(mode)
+	}
+
+	if p.SocketDir == "" {
+		p.SocketDir = "/var/run"
+	}
+
+	switch p.ControlProtocolVersion {
+	// We treat 0 the same as 1 since it's the default value if a user doesn't explicitly specify one.
+	case 0, 1:
+		p.gatherFromServer = p.gatherFromV1Server
+	case 2:
+		p.gatherFromServer = p.gatherFromV2Server
+	case 3:
+		p.gatherFromServer = gatherFromV3Server
+	default:
+		return fmt.Errorf("unknown control protocol version '%d', allowed values are 1, 2, 3", p.ControlProtocolVersion)
+	}
+
+	if len(p.UnixSockets) == 0 {
+		p.UnixSockets = []string{"/var/run/pdns_recursor.controlsocket"}
+	}
+
+	return nil
+}
+
+func (p *PowerdnsRecursor) Gather(acc telegraf.Accumulator) error {
+	for _, serverSocket := range p.UnixSockets {
+		if err := p.gatherFromServer(serverSocket, acc); err != nil {
+			acc.AddError(err)
+		}
+	}
+
+	return nil
+}
+
+func init() {
+	inputs.Add("powerdns_recursor", func() telegraf.Input {
+		return &PowerdnsRecursor{
+			mode: uint32(0666),
+		}
+	})
+}