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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.debug;
import static com.yahoo.search.debug.SearcherUtils.clusterSearchers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang.ArrayUtils;
import com.yahoo.fs4.mplex.Backend;
import com.yahoo.jrt.Int32Array;
import com.yahoo.jrt.Request;
import com.yahoo.jrt.StringArray;
import com.yahoo.jrt.Value;
import com.yahoo.jrt.Values;
import com.yahoo.prelude.cluster.ClusterSearcher;
import com.yahoo.yolean.Exceptions;
/**
* @author tonytv
*/
public class BackendStatistics implements DebugMethodHandler {
public JrtMethodSignature getSignature() {
String returnTypes = "" + (char)Value.STRING_ARRAY + (char)Value.INT32_ARRAY + (char)Value.INT32_ARRAY;
String parametersTypes = "" + (char)Value.STRING;
return new JrtMethodSignature(returnTypes, parametersTypes);
}
public void invoke(Request request) {
try {
Collection<ClusterSearcher> searchers = clusterSearchers(request);
List<String> backendIdentificators = new ArrayList<>();
List<Integer> activeConnections = new ArrayList<>();
List<Integer> totalConnections = new ArrayList<>();
for (ClusterSearcher searcher : searchers) {
for (Map.Entry<String,Backend.BackendStatistics> statistics : searcher.getBackendStatistics().entrySet()) {
backendIdentificators.add(statistics.getKey());
activeConnections.add(statistics.getValue().activeConnections);
totalConnections.add(statistics.getValue().totalConnections());
}
}
Values returnValues = request.returnValues();
returnValues.add(new StringArray(backendIdentificators.toArray(new String[0])));
addInt32Array(returnValues, activeConnections);
addInt32Array(returnValues, totalConnections);
} catch (Exception e) {
request.setError(1000, Exceptions.toMessageString(e));
}
}
private void addInt32Array(Values returnValues, List<Integer> ints) {
returnValues.add(new Int32Array(ArrayUtils.toPrimitive(ints.toArray(new Integer[0]))));
}
}
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