| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.kafka.common.requests; |
| |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.apache.kafka.common.protocol.ApiKeys; |
| import org.apache.kafka.common.protocol.ProtoUtils; |
| import org.apache.kafka.common.protocol.types.Schema; |
| import org.apache.kafka.common.protocol.types.Struct; |
| |
| |
| /** |
| * Response from SASL server which indicates if the client-chosen mechanism is enabled in the server. |
| * For error responses, the list of enabled mechanisms is included in the response. |
| */ |
| public class SaslHandshakeResponse extends AbstractRequestResponse { |
| |
| private static final Schema CURRENT_SCHEMA = ProtoUtils.currentResponseSchema(ApiKeys.SASL_HANDSHAKE.id); |
| |
| private static final String ERROR_CODE_KEY_NAME = "error_code"; |
| private static final String ENABLED_MECHANISMS_KEY_NAME = "enabled_mechanisms"; |
| |
| /** |
| * Possible error codes: |
| * UNSUPPORTED_SASL_MECHANISM(33): Client mechanism not enabled in server |
| * ILLEGAL_SASL_STATE(34) : Invalid request during SASL handshake |
| */ |
| private final short errorCode; |
| private final List<String> enabledMechanisms; |
| |
| public SaslHandshakeResponse(short errorCode, Collection<String> enabledMechanisms) { |
| super(new Struct(CURRENT_SCHEMA)); |
| struct.set(ERROR_CODE_KEY_NAME, errorCode); |
| struct.set(ENABLED_MECHANISMS_KEY_NAME, enabledMechanisms.toArray()); |
| this.errorCode = errorCode; |
| this.enabledMechanisms = new ArrayList<>(enabledMechanisms); |
| } |
| |
| public SaslHandshakeResponse(Struct struct) { |
| super(struct); |
| errorCode = struct.getShort(ERROR_CODE_KEY_NAME); |
| Object[] mechanisms = struct.getArray(ENABLED_MECHANISMS_KEY_NAME); |
| ArrayList<String> enabledMechanisms = new ArrayList<>(); |
| for (Object mechanism : mechanisms) |
| enabledMechanisms.add((String) mechanism); |
| this.enabledMechanisms = enabledMechanisms; |
| } |
| |
| public short errorCode() { |
| return errorCode; |
| } |
| |
| public List<String> enabledMechanisms() { |
| return enabledMechanisms; |
| } |
| |
| public static SaslHandshakeResponse parse(ByteBuffer buffer) { |
| return new SaslHandshakeResponse(CURRENT_SCHEMA.read(buffer)); |
| } |
| |
| public static SaslHandshakeResponse parse(ByteBuffer buffer, int version) { |
| return new SaslHandshakeResponse(ProtoUtils.parseResponse(ApiKeys.SASL_HANDSHAKE.id, version, buffer)); |
| } |
| } |
| |