package org.apache.cassandra.stress.operations;
/*
*
* 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.
*
*/
import java.io.IOException;
import java.nio.ByteBuffer;
import org.apache.cassandra.db.ColumnFamilyType;
import org.apache.cassandra.stress.Session;
import org.apache.cassandra.stress.util.Operation;
import org.apache.cassandra.thrift.Cassandra;
import org.apache.cassandra.thrift.Compression;
import org.apache.cassandra.thrift.CqlResult;
public class CqlRangeSlicer extends Operation
{
public CqlRangeSlicer(Session client, int idx)
{
super(client, idx);
}
public void run(Cassandra.Client client) throws IOException
{
if (session.getColumnFamilyType() == ColumnFamilyType.Super)
throw new RuntimeException("Super columns are not implemented for CQL");
String key = String.format("%0" + session.getTotalKeysLength() + "d", index);
StringBuilder query = new StringBuilder("SELECT FIRST ").append(session.getColumnsPerKey())
.append(" ''..'' FROM Standard1 USING CONSISTENCY ").append(session.getConsistencyLevel().toString())
.append(" WHERE KEY > ").append(getQuotedCqlBlob(key));
long startTime = System.currentTimeMillis();
boolean success = false;
String exceptionMessage = null;
int rowCount = 0;
for (int t = 0; t < session.getRetryTimes(); t++)
{
if (success)
break;
try
{
CqlResult result = client.execute_cql_query(ByteBuffer.wrap(query.toString().getBytes()),
Compression.NONE);
rowCount = result.rows.size();
success = (rowCount != 0);
}
catch (Exception e)
{
System.err.println(e);
exceptionMessage = getExceptionMessage(e);
success = false;
}
}
if (!success)
{
error(String.format("Operation [%d] retried %d times - error executing range slice with offset %s %s%n",
index,
session.getRetryTimes(),
key,
(exceptionMessage == null) ? "" : "(" + exceptionMessage + ")"));
}
session.operations.getAndIncrement();
session.keys.getAndAdd(rowCount);
session.latency.getAndAdd(System.currentTimeMillis() - startTime);
}
}