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auth_response.go
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auth_response.go
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// Copyright 2020 DataStax
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package message
import (
"errors"
"fmt"
"io"
"github.com/datastax/go-cassandra-native-protocol/primitive"
)
// AuthResponse is a request message sent in reply to an Authenticate or AuthChallenge response, and contains the
// authentication data requested by the server. The server will then reply with either an AuthSuccess response message,
// or with an AuthChallenge response message, if it requires additional authentication data.
// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=github.com/datastax/go-cassandra-native-protocol/message.Message
type AuthResponse struct {
// Token is a protocol [bytes]; the details of what this token contains (and when it can be null/empty, if ever)
// depends on the actual authenticator used.
Token []byte
}
func (m *AuthResponse) IsResponse() bool {
return false
}
func (m *AuthResponse) GetOpCode() primitive.OpCode {
return primitive.OpCodeAuthResponse
}
func (m *AuthResponse) String() string {
return "AUTH_RESPONSE"
}
type authResponseCodec struct{}
func (c *authResponseCodec) Encode(msg Message, dest io.Writer, _ primitive.ProtocolVersion) error {
authResponse, ok := msg.(*AuthResponse)
if !ok {
return errors.New(fmt.Sprintf("expected *message.AuthResponse, got %T", msg))
}
return primitive.WriteBytes(authResponse.Token, dest)
}
func (c *authResponseCodec) EncodedLength(msg Message, _ primitive.ProtocolVersion) (int, error) {
authResponse, ok := msg.(*AuthResponse)
if !ok {
return -1, errors.New(fmt.Sprintf("expected *message.AuthResponse, got %T", msg))
}
return primitive.LengthOfBytes(authResponse.Token), nil
}
func (c *authResponseCodec) Decode(source io.Reader, _ primitive.ProtocolVersion) (Message, error) {
if token, err := primitive.ReadBytes(source); err != nil {
return nil, err
} else {
return &AuthResponse{Token: token}, nil
}
}
func (c *authResponseCodec) GetOpCode() primitive.OpCode {
return primitive.OpCodeAuthResponse
}