/*
* 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.ConsistencyLevel;
import java.net.InetAddress;
import java.net.InetSocketAddress;
/**
* A failure to reach the required consistency level during the execution of a query.
* <p/>
* Such an exception is returned when the query has been tried by Cassandra but
* cannot be achieved with the requested consistency level because either:
* <ul>
* <li>the coordinator did not receive enough replica responses within the rpc timeout
* set for Cassandra;</li>
* <li>some replicas replied with an error.</li>
* </ul>.
*/
@SuppressWarnings("serial")
public abstract class QueryConsistencyException extends QueryExecutionException implements CoordinatorException {
private final InetSocketAddress address;
private final ConsistencyLevel consistency;
private final int received;
private final int required;
protected QueryConsistencyException(InetSocketAddress address, String msg, ConsistencyLevel consistency, int received, int required) {
super(msg);
this.address = address;
this.consistency = consistency;
this.received = received;
this.required = required;
}
protected QueryConsistencyException(InetSocketAddress address, String msg, Throwable cause, ConsistencyLevel consistency, int received, int required) {
super(msg, cause);
this.address = address;
this.consistency = consistency;
this.received = received;
this.required = required;
}
/**
* The consistency level of the operation that failed.
*
* @return the consistency level of the operation that failed.
*/
public ConsistencyLevel getConsistencyLevel() {
return consistency;
}
/**
* The number of replica that had acknowledged/responded to the operation
* before it failed.
*
* @return the number of replica that had acknowledged/responded the
* operation before it failed.
*/
public int getReceivedAcknowledgements() {
return received;
}
/**
* The minimum number of replica acknowledgements/responses that were
* required to fulfill the operation.
*
* @return The minimum number of replica acknowledgements/response that
* were required to fulfill the operation.
*/
public int getRequiredAcknowledgements() {
return required;
}
/**
* The coordinator host that caused this exception to be thrown.
* Note that this is the query coordinator host, <em>not</em> the host which timed out.
*
* @return The coordinator host that caused this exception to be thrown, or {@code null} if this exception has been generated driver-side.
*/
@Override
public InetAddress getHost() {
return address.getAddress();
}
/**
* The full address of the coordinator host that caused this exception to be thrown.
* Note that this is the query coordinator host, <em>not</em> the host which timed out.
*
* @return the full address of the coordinator host that caused this exception to be thrown,
* or {@code null} if this exception has been generated driver-side.
*/
@Override
public InetSocketAddress getAddress() {
return address;
}
}