/*
* Copyright (C) 2012-2015 DataStax Inc.
*
* 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 com.datastax.driver.core.exceptions;
import com.datastax.driver.core.ProtocolVersion;
import java.net.InetAddress;
import java.net.InetSocketAddress;
/**
* Indicates that we've attempted to connect to a Cassandra node with a protocol version
* that it cannot handle (e.g., connecting to a C* 1.2 node with protocol version 2).
*/
public class UnsupportedProtocolVersionException extends DriverException implements CoordinatorException {
private static final long serialVersionUID = 0;
private final InetSocketAddress address;
private final ProtocolVersion unsupportedVersion;
private final ProtocolVersion serverVersion;
public UnsupportedProtocolVersionException(InetSocketAddress address, ProtocolVersion unsupportedVersion, ProtocolVersion serverVersion) {
super(makeErrorMessage(address, unsupportedVersion, serverVersion));
this.address = address;
this.unsupportedVersion = unsupportedVersion;
this.serverVersion = serverVersion;
}
public UnsupportedProtocolVersionException(InetSocketAddress address, ProtocolVersion unsupportedVersion, ProtocolVersion serverVersion, Throwable cause) {
super(makeErrorMessage(address, unsupportedVersion, serverVersion), cause);
this.address = address;
this.unsupportedVersion = unsupportedVersion;
this.serverVersion = serverVersion;
}
private static String makeErrorMessage(InetSocketAddress address, ProtocolVersion unsupportedVersion, ProtocolVersion serverVersion) {
return unsupportedVersion == serverVersion
? String.format("[%s] Host does not support protocol version %s", address, unsupportedVersion)
: String.format("[%s] Host does not support protocol version %s but %s", address, unsupportedVersion, serverVersion);
}
@Override
public InetAddress getHost() {
return address.getAddress();
}
@Override
public InetSocketAddress getAddress() {
return address;
}
/**
* The version with which the server replied.
* <p/>
* Note that this version is not necessarily a supported version.
* While this is usually the case, in rare situations,
* the server might respond with an unsupported version,
* to ensure that the client can decode its response properly.
* See CASSANDRA-11464 for more details.
*
* @return The version with which the server replied.
*/
public ProtocolVersion getServerVersion() {
return serverVersion;
}
/**
* The version with which the client sent its request.
*
* @return The version with which the client sent its request.
*/
public ProtocolVersion getUnsupportedVersion() {
return unsupportedVersion;
}
@Override
public UnsupportedProtocolVersionException copy() {
return new UnsupportedProtocolVersionException(address, unsupportedVersion, serverVersion, this);
}
}