/*
* 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.policies;
import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.ConsistencyLevel;
import com.datastax.driver.core.Statement;
import com.datastax.driver.core.WriteType;
import com.datastax.driver.core.exceptions.DriverException;
/**
* A retry policy that never retries (nor ignores).
* <p/>
* All of the methods of this retry policy unconditionally return {@link RetryPolicy.RetryDecision#rethrow()}.
* If this policy is used, retry logic will have to be implemented in business code.
*/
public class FallthroughRetryPolicy implements RetryPolicy {
public static final FallthroughRetryPolicy INSTANCE = new FallthroughRetryPolicy();
private FallthroughRetryPolicy() {
}
/**
* {@inheritDoc}
* <p/>
* This implementation always returns {@code RetryDecision.rethrow()}.
*/
@Override
public RetryDecision onReadTimeout(Statement statement, ConsistencyLevel cl, int requiredResponses, int receivedResponses, boolean dataRetrieved, int nbRetry) {
return RetryDecision.rethrow();
}
/**
* {@inheritDoc}
* <p/>
* This implementation always returns {@code RetryDecision.rethrow()}.
*/
@Override
public RetryDecision onWriteTimeout(Statement statement, ConsistencyLevel cl, WriteType writeType, int requiredAcks, int receivedAcks, int nbRetry) {
return RetryDecision.rethrow();
}
/**
* {@inheritDoc}
* <p/>
* This implementation always returns {@code RetryDecision.rethrow()}.
*/
@Override
public RetryDecision onUnavailable(Statement statement, ConsistencyLevel cl, int requiredReplica, int aliveReplica, int nbRetry) {
return RetryDecision.rethrow();
}
/**
* {@inheritDoc}
* <p/>
* This implementation always returns {@code RetryDecision.rethrow()}.
*/
@Override
public RetryDecision onRequestError(Statement statement, ConsistencyLevel cl, DriverException e, int nbRetry) {
return RetryDecision.rethrow();
}
@Override
public void init(Cluster cluster) {
// nothing to do
}
@Override
public void close() {
// nothing to do
}
}