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LocalhostSplitManager.java
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LocalhostSplitManager.java
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package io.split.client;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import io.split.client.api.SplitView;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeoutException;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* An implementation of SplitClient that considers all partitions
* passed in the constructor to be 100% on for all users, and
* any other split to be 100% off for all users. This implementation
* is useful for using Codigo in localhost environment.
*
* @author adil
*/
public final class LocalhostSplitManager implements SplitManager {
private Map<SplitAndKey, LocalhostSplit> _splitAndKeyToTreatmentMap;
private Map<String, Set<String>> _splitToTreatmentsMap;
public static LocalhostSplitManager of(Map<SplitAndKey, LocalhostSplit> featureToTreatmentMap) {
checkNotNull(featureToTreatmentMap, "featureToTreatmentMap must not be null");
return new LocalhostSplitManager(featureToTreatmentMap, splitsToTreatments(featureToTreatmentMap));
}
private static Map<String, Set<String>> splitsToTreatments(Map<SplitAndKey, LocalhostSplit> splitAndKeyStringMap) {
Map<String, Set<String>> splitsToTreatments = Maps.newHashMap();
for (Map.Entry<SplitAndKey, LocalhostSplit> entry : splitAndKeyStringMap.entrySet()) {
String split = entry.getKey().split();
if (!splitsToTreatments.containsKey(split)) {
splitsToTreatments.put(split, Sets.<String>newHashSet());
}
Set<String> treatments = splitsToTreatments.get(split);
treatments.add(entry.getValue().treatment);
}
return splitsToTreatments;
}
private LocalhostSplitManager(Map<SplitAndKey, LocalhostSplit> featureToTreatmentMap, Map<String, Set<String>> splitToTreatmentsMap) {
checkNotNull(featureToTreatmentMap, "featureToTreatmentMap must not be null");
_splitAndKeyToTreatmentMap = featureToTreatmentMap;
_splitToTreatmentsMap = splitToTreatmentsMap;
}
@Override
public List<SplitView> splits() {
List<SplitView> result = new ArrayList<SplitView>();
for (Map.Entry<String, Set<String>> entry : _splitToTreatmentsMap.entrySet()) {
result.add(toSplitView(entry.getKey(), entry.getValue()));
}
return result;
}
@Override
public List<String> splitNames() {
Set<String> splits = Sets.newHashSet();
for (Map.Entry<SplitAndKey, LocalhostSplit> entry : _splitAndKeyToTreatmentMap.entrySet()) {
splits.add(entry.getKey().split());
}
return Lists.newArrayList(splits);
}
@Override
public void blockUntilReady() throws TimeoutException, InterruptedException {
// It is always ready
}
@Override
public SplitView split(String featureName) {
if (!_splitAndKeyToTreatmentMap.containsKey(featureName)) {
return null;
}
return toSplitView(featureName, _splitToTreatmentsMap.get(featureName));
}
void updateFeatureToTreatmentMap(Map<SplitAndKey, LocalhostSplit> featureToTreatmentMap) {
checkNotNull(featureToTreatmentMap, "featureToTreatmentMap must not be null");
_splitAndKeyToTreatmentMap = featureToTreatmentMap;
_splitToTreatmentsMap = splitsToTreatments(_splitAndKeyToTreatmentMap);
}
private SplitView toSplitView(String featureName, Set<String> treatments) {
SplitView view = new SplitView();
view.name = featureName;
view.killed = false;
view.trafficType = null;
view.changeNumber = 0;
view.treatments = new ArrayList<String>();
if (treatments != null) {
view.treatments.addAll(treatments);
}
return view;
}
}