Adding upstream version 1.34.4.

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

plugins/inputs/dcos/creds.go

@@ -0,0 +1,72 @@
+package dcos
+
+import (
+	"context"
+	"crypto/rsa"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+const (
+	// How long before expiration to renew token
+	relogDuration = 5 * time.Minute
+)
+
+type credentials interface {
+	token(ctx context.Context, client client) (string, error)
+	isExpired() bool
+}
+
+type serviceAccount struct {
+	accountID  string
+	privateKey *rsa.PrivateKey
+
+	auth *authToken
+}
+
+type tokenCreds struct {
+	Path string
+}
+
+type nullCreds struct {
+}
+
+func (c *serviceAccount) token(ctx context.Context, client client) (string, error) {
+	auth, err := client.login(ctx, c)
+	if err != nil {
+		return "", err
+	}
+	c.auth = auth
+	return auth.Text, nil
+}
+
+func (c *serviceAccount) isExpired() bool {
+	return c.auth.Text != "" || c.auth.Expire.Add(relogDuration).After(time.Now())
+}
+
+func (c *tokenCreds) token(_ context.Context, _ client) (string, error) {
+	octets, err := os.ReadFile(c.Path)
+	if err != nil {
+		return "", fmt.Errorf("error reading token file %q: %w", c.Path, err)
+	}
+	if !utf8.Valid(octets) {
+		return "", fmt.Errorf("token file does not contain utf-8 encoded text: %s", c.Path)
+	}
+	token := strings.TrimSpace(string(octets))
+	return token, nil
+}
+
+func (*tokenCreds) isExpired() bool {
+	return true
+}
+
+func (*nullCreds) token(context.Context, client) (string, error) {
+	return "", nil
+}
+
+func (*nullCreds) isExpired() bool {
+	return true
+}