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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.searchers.test;
import com.yahoo.jdisc.Metric;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* @author bratseth
*/
class MockMetric implements Metric {
private Map<Context, Map<String, Number>> metrics = new HashMap<>();
public Map<String, Number> values(Context context) {
return metricsForContext(context);
}
@Override
public void set(String key, Number val, Context context) {
metricsForContext(context).put(key, val);
}
@Override
public void add(String key, Number value, Context context) {
Number previousValue = metricsForContext(context).get(key);
if (previousValue == null)
previousValue = 0;
metricsForContext(context).put(key, value.doubleValue() + previousValue.doubleValue());
}
/** Returns the metrics for a given context, never null */
private Map<String, Number> metricsForContext(Context context) {
Map<String, Number> metricsForContext = metrics.get(context);
if (metricsForContext == null) {
metricsForContext = new HashMap<>();
metrics.put(context, metricsForContext);
}
return metricsForContext;
}
@Override
public Context createContext(Map<String, ?> dimensions) {
return new MapContext(dimensions);
}
/** Creates a context containing a single dimension */
public Metric.Context createContext(String dimensionName, String dimensionValue) {
if (dimensionName.isEmpty())
return createContext(Collections.emptyMap());
return createContext(Collections.singletonMap(dimensionName, dimensionValue));
}
private class MapContext implements Metric.Context {
private final Map<String, ?> dimensions;
public MapContext(Map<String, ?> dimensions) {
this.dimensions = dimensions;
}
@Override
public int hashCode() {
return dimensions.hashCode();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if ( ! (o instanceof MapContext)) return false;
return dimensions.equals(((MapContext)o).dimensions);
}
}
}
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