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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.vespa.streamingvisitors;
import com.yahoo.log.event.Event;
import com.yahoo.search.query.context.QueryContext;
import com.yahoo.search.result.ErrorMessage;
import com.yahoo.search.searchchain.Execution;
import com.yahoo.search.Query;
import com.yahoo.search.Result;
import com.yahoo.search.Searcher;
import com.yahoo.processing.request.CompoundName;
import com.yahoo.vdslib.VisitorStatistics;
import java.util.Map;
import java.util.TreeMap;
import java.util.logging.Logger;
import static com.yahoo.vespa.streamingvisitors.StreamingSearcher.STREAMING_STATISTICS;
/**
* Generates mail-specific query metrics.
*/
public class MetricsSearcher extends Searcher {
private static final CompoundName metricsearcherId = CompoundName.from("metricsearcher.id");
private static final CompoundName streamingLoadtype = CompoundName.from("streaming.loadtype");
private static final Logger log = Logger.getLogger(MetricsSearcher.class.getName());
static class Stats {
long latency = 0;
int count = 0;
int ok = 0;
int failed = 0;
long dataStreamed = 0;
long documentsStreamed = 0;
}
Map<String, Stats> statMap = new TreeMap<>();
private long lastMetricLog = 0;
@Override
public Result search(Query query, Execution execution) {
long timeMs = System.currentTimeMillis();
// Backwards compatibility - convert metricsearcher.id to streaming.loadtype
// TODO Cleanup at some point
String metricName = query.properties().getString(metricsearcherId);
if (metricName != null) {
query.properties().set(streamingLoadtype, metricName);
}
Result result = execution.search(query);
long latency = System.currentTimeMillis() - timeMs;
metricName = query.properties().getString(streamingLoadtype);
if (metricName == null) {
return result;
}
synchronized(this) {
Stats stats = statMap.get(metricName);
if (stats == null) {
stats = new Stats();
statMap.put(metricName, stats);
}
stats.count++;
stats.latency += latency;
if (result.hits().getError() != null &&
!result.hits().getErrorHit().hasOnlyErrorCode(ErrorMessage.NULL_QUERY) &&
!result.hits().getErrorHit().hasOnlyErrorCode(3)) {
stats.failed++;
} else {
stats.ok++;
}
VisitorStatistics visitorstats = null;
final QueryContext queryContext = query.getContext(false);
if (queryContext != null) {
visitorstats = (VisitorStatistics)queryContext.getProperty(STREAMING_STATISTICS);
}
if (visitorstats != null) {
stats.dataStreamed += visitorstats.getBytesVisited();
stats.documentsStreamed += visitorstats.getDocumentsVisited();
} else {
log.fine("No visitor statistics set in query! - don't use metrics searcher without streaming search");
}
if ((timeMs - lastMetricLog) > 60000) {
for (Map.Entry<String, Stats> entry : statMap.entrySet()) {
stats = entry.getValue();
Event.value(entry.getKey() + "_latency", stats.count > 0 ? (double)stats.latency / (double)stats.count : 0);
Event.value(entry.getKey() + "_ok", stats.ok);
Event.value(entry.getKey() + "_failed", stats.failed);
Event.value(entry.getKey() + "_bytesstreamed", stats.dataStreamed);
Event.value(entry.getKey() + "_documentsstreamed", stats.documentsStreamed);
stats.latency = 0;
stats.count = 0;
}
lastMetricLog = timeMs;
}
}
return result;
}
}
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