zipkin.storage.cassandra.ZipkinRetryPolicy Maven / Gradle / Ivy
/**
* Copyright 2015-2016 The OpenZipkin Authors
*
* 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 zipkin.storage.cassandra;
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;
import com.datastax.driver.core.policies.RetryPolicy;
/** This class was copied from org.twitter.zipkin.storage.cassandra.ZipkinRetryPolicy */
final class ZipkinRetryPolicy implements RetryPolicy {
public static final ZipkinRetryPolicy INSTANCE = new ZipkinRetryPolicy();
private ZipkinRetryPolicy() {
}
@Override
public RetryDecision onReadTimeout(Statement statement, ConsistencyLevel cl,
int requiredResponses, int receivedResponses, boolean dataRetrieved, int nbRetry) {
return RetryDecision.retry(ConsistencyLevel.ONE);
}
@Override
public RetryDecision onWriteTimeout(Statement statement, ConsistencyLevel cl, WriteType writeType,
int requiredAcks, int receivedAcks, int nbRetry) {
return RetryDecision.retry(ConsistencyLevel.ONE);
}
@Override
public RetryDecision onUnavailable(Statement statement, ConsistencyLevel cl, int requiredReplica,
int aliveReplica, int nbRetry) {
return RetryDecision.retry(ConsistencyLevel.ONE);
}
@Override
public RetryDecision onRequestError(Statement statement, ConsistencyLevel cl,
DriverException e, int nbRetry) {
return RetryDecision.tryNextHost(ConsistencyLevel.ONE);
}
@Override
public void init(Cluster cluster) {
// nothing to do
}
@Override
public void close() {
// nothing to do
}
}