}

// UnmarshalXML - decodes XML data.
func (arn *ARN) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	var s string
	if err := d.DecodeElement(&s, &start); err != nil {
		return err
	}

	parsedARN, err := parseARN(s)
	if err != nil {
		return err
	}

	*arn = *parsedARN
	return nil
}

// parseARN - parses string to ARN.
func parseARN(s string) (*ARN, error) {

// SASLprep fails, the method returns an error.
func (x *XDGSCRAMClient) Begin(userName, password, authzID string) (err error) {
	x.Client, err = x.HashGeneratorFcn.NewClient(userName, password, authzID)
	if err != nil {
		return err
	}
	x.ClientConversation = x.Client.NewConversation()
	return nil
}

// Step takes a string provided from a server (or just an empty string for the

				var zb0002 uint8
				zb0002, err = dc.ReadUint8()
				if err != nil {
					err = msgp.WrapError(err, "Code")
					return
				}
				z.Code = ResponseCode(zb0002)
			}
		case "Err":
			z.Err, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Err")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}

			if err != nil {
				err = msgp.WrapError(err, "Version")
				return
			}
		case "ss":
			err = z.Status.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Status")
				return
			}
		case "did":
			z.DeplID, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "DeplID")
				return
			}
		case "bkts":
			var zb0002 uint32
			zb0002, err = dc.ReadMapHeader()

	retryTicker := time.NewTicker(retryInterval)
	defer retryTicker.Stop()

	send := func(key Key) bool {
		for {
			err := target.SendFromStore(key)
			if err == nil {
				break
			}

			logger(
				context.Background(),
				fmt.Errorf("unable to send log entry to '%s' err '%w'", target.Name(), err),
				target.Name(),
			)

			select {
			// Retrying after 3secs back-off
			case <-retryTicker.C:

///

Agora, obtenha os dados do usuário do banco de dados (falso), usando o `username` do campo do formulário.

Se não existir tal usuário, retornaremos um erro dizendo "Incorrect username or password" (Nome de usuário ou senha incorretos).

Para o erro, usamos a exceção `HTTPException`:

//// tab | Python 3.10+

```Python hl_lines="3  79-81"
{!> ../../docs_src/security/tutorial003_an_py310.py!}
```

////

	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "LimitInBytesPerSecond":
			z.LimitInBytesPerSecond, err = dc.ReadInt64()
			if err != nil {

		}

		if err := tx.First(&User{}, "name = ?", user2.Name).Error; err != nil {
			t.Fatalf("Should find saved record")
		}
		return nil
	}); err != nil {
		t.Fatalf("no error should return, but got %v", err)
	}

	if err := DB.First(&User{}, "name = ?", user.Name).Error; err != nil {
		t.Fatalf("Should find saved record")
	}

	if err := DB.First(&User{}, "name = ?", user1.Name).Error; err == nil {

	// Make subtype to avoid recursive UnmarshalXML().
	type subReaderArgs ReaderArgs
	parsedArgs := subReaderArgs{}
	if err := d.DecodeElement(&parsedArgs, &start); err != nil {
		return err
	}

	parsedArgs.ContentType = strings.ToLower(parsedArgs.ContentType)
	switch parsedArgs.ContentType {
	case document, lines:
	default:

			z.Deleted, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Deleted")
				return
			}
		case "Cached":
			z.Cached, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Cached")
				return
			}
		case "NoMetadata":
			z.NoMetadata, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "NoMetadata")
				return
			}