| /* |
| * 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.cassandra.transport; |
| |
| import org.apache.cassandra.exceptions.ExceptionCode; |
| import org.apache.cassandra.exceptions.TransportException; |
| |
| /** |
| * Exceptions thrown when a client didn't respect the protocol. |
| */ |
| public class ProtocolException extends RuntimeException implements TransportException |
| { |
| private final Integer attemptedLowProtocolVersion; |
| |
| public ProtocolException(String msg) |
| { |
| this(msg, null); |
| } |
| |
| public ProtocolException(String msg, Integer attemptedLowProtocolVersion) |
| { |
| super(msg); |
| this.attemptedLowProtocolVersion = attemptedLowProtocolVersion; |
| } |
| |
| public ExceptionCode code() |
| { |
| return ExceptionCode.PROTOCOL_ERROR; |
| } |
| |
| /** |
| * If the ProtocolException is due to a connection being made with a protocol version that is lower |
| * than Server.MIN_SUPPORTED_VERSION, this will return that unsupported protocol version. Otherwise, |
| * null is returned. |
| */ |
| public Integer getAttemptedLowProtocolVersion() |
| { |
| return attemptedLowProtocolVersion; |
| } |
| } |