| /** |
| * 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.storm.messaging.netty; |
| |
| import org.apache.storm.shade.io.netty.buffer.ByteBuf; |
| import org.apache.storm.shade.io.netty.buffer.Unpooled; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Send and receive SASL tokens. |
| */ |
| public class SaslMessageToken implements INettySerializable { |
| public static final short IDENTIFIER = -500; |
| private static final Logger LOG = LoggerFactory.getLogger(SaslMessageToken.class); |
| |
| /** |
| * Used for client or server's token to send or receive from each other. |
| */ |
| private byte[] token; |
| |
| /** |
| * Constructor used for reflection only. |
| */ |
| public SaslMessageToken() { |
| } |
| |
| /** |
| * Constructor used to send request. |
| * |
| * @param token the SASL token, generated by a SaslClient or SaslServer. |
| */ |
| public SaslMessageToken(byte[] token) { |
| this.token = token; |
| } |
| |
| public static SaslMessageToken read(byte[] serial) { |
| ByteBuf smBuffer = Unpooled.wrappedBuffer(serial); |
| try { |
| short identifier = smBuffer.readShort(); |
| int payloadLen = smBuffer.readInt(); |
| if (identifier != IDENTIFIER) { |
| return null; |
| } |
| byte[] token = new byte[payloadLen]; |
| smBuffer.readBytes(token, 0, payloadLen); |
| return new SaslMessageToken(token); |
| } finally { |
| smBuffer.release(); |
| } |
| } |
| |
| /** |
| * Read accessor for SASL token. |
| * |
| * @return saslToken SASL token |
| */ |
| public byte[] getSaslToken() { |
| return token; |
| } |
| |
| /** |
| * Write accessor for SASL token. |
| * |
| * @param token SASL token |
| */ |
| public void setSaslToken(byte[] token) { |
| this.token = token; |
| } |
| |
| @Override |
| public int encodeLength() { |
| return 2 + 4 + token.length; |
| } |
| |
| /** |
| * encode the current SaslToken Message into a ByteBuf. |
| * |
| * <p>SaslTokenMessageRequest is encoded as: identifier .... short(2) payload |
| * length .... int payload .... byte[] |
| */ |
| @Override |
| public void write(ByteBuf dest) { |
| int payloadLen = 0; |
| if (token != null) { |
| payloadLen = token.length; |
| } |
| |
| dest.writeShort(IDENTIFIER); |
| dest.writeInt(payloadLen); |
| |
| if (payloadLen > 0) { |
| dest.writeBytes(token); |
| } |
| } |
| } |