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The engine API for nosqlbench;
Provides the interfaces needed to build internal modules for the
nosqlbench core engine
/*
*
* Copyright 2016 jshook
* 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 io.nosqlbench.engine.api.activityapi.planning;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;
import java.util.ArrayList;
import java.util.List;
import java.util.function.ToLongFunction;
public class SequencePlanner {
private final static Logger logger = LogManager.getLogger(SequencePlanner.class);
private final SequencerType sequencerType;
private final List elements = new ArrayList<>();
private final List ratios = new ArrayList<>();
private int[] elementIndex;
public SequencePlanner(SequencerType sequencerType) {
this.sequencerType = sequencerType;
}
public void addOp(T elem, ToLongFunction ratioFunc) {
this.elements.add(elem);
this.ratios.add(ratioFunc.applyAsLong(elem));
}
public void addOp(T elem, long func) {
this.elements.add(elem);
this.ratios.add(func);
}
public OpSequence resolve() {
switch (sequencerType) {
case bucket:
logger.trace("sequencing elements by simple round-robin");
this.elementIndex = new BucketSequencer().seqIndexesByRatios(elements, ratios);
break;
case interval:
logger.trace("sequencing elements by interval and position");
this.elementIndex = new IntervalSequencer().seqIndexesByRatios(elements, ratios);
break;
case concat:
logger.trace("sequencing elements by concatenation");
this.elementIndex = new ConcatSequencer().seqIndexesByRatios(elements, ratios);
}
return new Sequence<>(sequencerType, elements, elementIndex);
}
public List getElements() {
return elements;
}
public List getRatios() {
return ratios;
}
}
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