| 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.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.cassandra.stress.Operation; |
| import org.apache.cassandra.stress.StressAction.MeasurementSink; |
| import org.apache.cassandra.stress.generate.DistributionFactory; |
| import org.apache.cassandra.stress.generate.DistributionFixed; |
| import org.apache.cassandra.stress.generate.PartitionGenerator; |
| import org.apache.cassandra.stress.report.Timer; |
| import org.apache.commons.math3.distribution.EnumeratedDistribution; |
| import org.apache.commons.math3.util.Pair; |
| |
| public abstract class SampledOpDistributionFactory<T> implements OpDistributionFactory |
| { |
| |
| final Map<T, Double> ratios; |
| final DistributionFactory clustering; |
| protected SampledOpDistributionFactory(Map<T, Double> ratios, DistributionFactory clustering) |
| { |
| this.ratios = ratios; |
| this.clustering = clustering; |
| } |
| |
| protected abstract List<? extends Operation> get(Timer timer, T key, boolean isWarmup); |
| |
| public OpDistribution get(boolean isWarmup, MeasurementSink sink) |
| { |
| List<Pair<Operation, Double>> operations = new ArrayList<>(); |
| for (Map.Entry<T, Double> ratio : ratios.entrySet()) |
| { |
| List<? extends Operation> ops = get(new Timer(ratio.getKey().toString(), sink), |
| ratio.getKey(), isWarmup); |
| for (Operation op : ops) |
| operations.add(new Pair<>(op, ratio.getValue() / ops.size())); |
| } |
| return new SampledOpDistribution(new EnumeratedDistribution<>(operations), clustering.get()); |
| } |
| |
| public String desc() |
| { |
| List<T> keys = new ArrayList<>(); |
| for (Map.Entry<T, Double> ratio : ratios.entrySet()) |
| keys.add(ratio.getKey()); |
| return keys.toString(); |
| } |
| |
| public Iterable<OpDistributionFactory> each() |
| { |
| List<OpDistributionFactory> out = new ArrayList<>(); |
| for (final Map.Entry<T, Double> ratio : ratios.entrySet()) |
| { |
| out.add(new OpDistributionFactory() |
| { |
| public OpDistribution get(boolean isWarmup, MeasurementSink sink) |
| { |
| List<? extends Operation> ops = SampledOpDistributionFactory.this.get(new Timer(ratio.getKey().toString(), sink), |
| ratio.getKey(), |
| isWarmup); |
| if (ops.size() == 1) |
| return new FixedOpDistribution(ops.get(0)); |
| List<Pair<Operation, Double>> ratios = new ArrayList<>(); |
| for (Operation op : ops) |
| ratios.add(new Pair<>(op, 1d / ops.size())); |
| return new SampledOpDistribution(new EnumeratedDistribution<>(ratios), new DistributionFixed(1)); |
| } |
| |
| public String desc() |
| { |
| return ratio.getKey().toString(); |
| } |
| |
| public Iterable<OpDistributionFactory> each() |
| { |
| return Collections.<OpDistributionFactory>singleton(this); |
| } |
| }); |
| } |
| return out; |
| } |
| |
| } |