Adding upstream version 1.34.4.

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

plugins/inputs/rethinkdb/rethinkdb.go

@@ -0,0 +1,92 @@
+//go:generate ../../../tools/readme_config_includer/generator
+package rethinkdb
+
+import (
+	_ "embed"
+	"fmt"
+	"net/url"
+	"sync"
+
+	"gopkg.in/gorethink/gorethink.v3"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/inputs"
+)
+
+//go:embed sample.conf
+var sampleConfig string
+
+var localhost = &server{url: &url.URL{Host: "127.0.0.1:28015"}}
+
+type RethinkDB struct {
+	Servers []string `toml:"servers"`
+}
+
+func (*RethinkDB) SampleConfig() string {
+	return sampleConfig
+}
+
+func (r *RethinkDB) Gather(acc telegraf.Accumulator) error {
+	if len(r.Servers) == 0 {
+		return gatherServer(localhost, acc)
+	}
+
+	var wg sync.WaitGroup
+
+	for _, serv := range r.Servers {
+		u, err := url.Parse(serv)
+		if err != nil {
+			acc.AddError(fmt.Errorf("unable to parse to address %q: %w", serv, err))
+			continue
+		} else if u.Scheme == "" {
+			// fallback to simple string based address (i.e. "10.0.0.1:10000")
+			u.Host = serv
+		}
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			acc.AddError(gatherServer(&server{url: u}, acc))
+		}()
+	}
+
+	wg.Wait()
+
+	return nil
+}
+
+func gatherServer(server *server, acc telegraf.Accumulator) error {
+	var err error
+	connectOpts := gorethink.ConnectOpts{
+		Address:       server.url.Host,
+		DiscoverHosts: false,
+	}
+	if server.url.User != nil {
+		pwd, set := server.url.User.Password()
+		if set && pwd != "" {
+			connectOpts.AuthKey = pwd
+			connectOpts.HandshakeVersion = gorethink.HandshakeV0_4
+		}
+	}
+	if server.url.Scheme == "rethinkdb2" && server.url.User != nil {
+		pwd, set := server.url.User.Password()
+		if set && pwd != "" {
+			connectOpts.Username = server.url.User.Username()
+			connectOpts.Password = pwd
+			connectOpts.HandshakeVersion = gorethink.HandshakeV1_0
+		}
+	}
+
+	server.session, err = gorethink.Connect(connectOpts)
+	if err != nil {
+		return fmt.Errorf("unable to connect to RethinkDB: %w", err)
+	}
+	defer server.session.Close()
+
+	return server.gatherData(acc)
+}
+
+func init() {
+	inputs.Add("rethinkdb", func() telegraf.Input {
+		return &RethinkDB{}
+	})
+}