Adding upstream version 1.34.4.

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

plugins/inputs/powerdns/powerdns_linux_test.go

@@ -0,0 +1,71 @@
+//go:build !windows
+
+package powerdns
+
+import (
+	"fmt"
+	"net"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/testutil"
+)
+
+func serverSocket(l net.Listener) {
+	for {
+		conn, err := l.Accept()
+		if err != nil {
+			return
+		}
+
+		go func(c net.Conn) {
+			buf := make([]byte, 1024)
+			n, _ := c.Read(buf) //nolint:errcheck // ignore the returned error as we need to close the socket anyway
+
+			data := buf[:n]
+			if string(data) == "show * \n" {
+				c.Write([]byte(metrics)) //nolint:errcheck // ignore the returned error as we need to close the socket anyway
+				c.Close()
+			}
+		}(conn)
+	}
+}
+
+func TestPowerdnsGeneratesMetrics(t *testing.T) {
+	// We create a fake server to return test data
+	randomNumber := int64(5239846799706671610)
+	sockname := filepath.Join(t.TempDir(), fmt.Sprintf("pdns%d.controlsocket", randomNumber))
+	socket, err := net.Listen("unix", sockname)
+	if err != nil {
+		t.Fatal("Cannot initialize server on port ")
+	}
+
+	defer socket.Close()
+
+	go serverSocket(socket)
+
+	p := &Powerdns{
+		UnixSockets: []string{sockname},
+	}
+
+	var acc testutil.Accumulator
+	err = acc.GatherError(p.Gather)
+	require.NoError(t, err)
+
+	intMetrics := []string{"corrupt-packets", "deferred-cache-inserts",
+		"deferred-cache-lookup", "dnsupdate-answers", "dnsupdate-changes",
+		"dnsupdate-queries", "dnsupdate-refused", "packetcache-hit",
+		"packetcache-miss", "packetcache-size", "query-cache-hit", "query-cache-miss",
+		"rd-queries", "recursing-answers", "recursing-questions",
+		"recursion-unanswered", "security-status", "servfail-packets", "signatures",
+		"tcp-answers", "tcp-queries", "timedout-packets", "udp-answers",
+		"udp-answers-bytes", "udp-do-queries", "udp-queries", "udp4-answers",
+		"udp4-queries", "udp6-answers", "udp6-queries", "key-cache-size", "latency",
+		"meta-cache-size", "qsize-q", "signature-cache-size", "sys-msec", "uptime", "user-msec"}
+
+	for _, metric := range intMetrics {
+		require.True(t, acc.HasInt64Field("powerdns", metric), metric)
+	}
+}