/**
* 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.
*/
package org.apache.cassandra.stress.operations;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.apache.cassandra.stress.Operation;
import org.apache.cassandra.stress.util.ThriftClient;
import org.apache.cassandra.thrift.ColumnParent;
import org.apache.cassandra.thrift.KeyRange;
import org.apache.cassandra.thrift.SlicePredicate;
import org.apache.cassandra.thrift.SliceRange;
import org.apache.cassandra.utils.ByteBufferUtil;
public final class ThriftRangeSlicer extends Operation
{
public ThriftRangeSlicer(State state, long index)
{
super(state, index);
}
@Override
public void run(final ThriftClient client) throws IOException
{
final SlicePredicate predicate = new SlicePredicate()
.setSlice_range(
new SliceRange(
ByteBufferUtil.EMPTY_BYTE_BUFFER,
ByteBufferUtil.EMPTY_BYTE_BUFFER,
false,
state.settings.columns.maxColumnsPerKey
)
);
final ByteBuffer start = getKey();
final KeyRange range =
new KeyRange(state.settings.columns.maxColumnsPerKey)
.setStart_key(start)
.setEnd_key(ByteBufferUtil.EMPTY_BYTE_BUFFER)
.setCount(state.settings.command.keysAtOnce);
for (final ColumnParent parent : state.columnParents)
{
timeWithRetry(new RunOp()
{
private int count = 0;
@Override
public boolean run() throws Exception
{
return (count = client.get_range_slices(parent, predicate, range, state.settings.command.consistencyLevel).size()) != 0;
}
@Override
public String key()
{
return new String(range.bufferForStart_key().array());
}
@Override
public int keyCount()
{
return count;
}
});
}
}
}