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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.metricsproxy.node;
import ai.vespa.metricsproxy.core.MetricsManager;
import ai.vespa.metricsproxy.metric.dimensions.ApplicationDimensions;
import ai.vespa.metricsproxy.metric.dimensions.NodeDimensions;
import ai.vespa.metricsproxy.metric.model.ConsumerId;
import ai.vespa.metricsproxy.metric.model.DimensionId;
import ai.vespa.metricsproxy.metric.model.MetricId;
import ai.vespa.metricsproxy.metric.model.MetricsPacket;
import ai.vespa.metricsproxy.metric.model.ServiceId;
import ai.vespa.metricsproxy.service.SystemPollerProvider;
import com.fasterxml.jackson.databind.JsonNode;
import com.yahoo.component.annotation.Inject;
import com.yahoo.container.jdisc.state.FileWrapper;
import com.yahoo.container.jdisc.state.HostLifeGatherer;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* Fetches miscellaneous system metrics for node, including
* - Current coredump processing
* - Health of Vespa services
* - Host life
*
* @author olaa
*/
public class NodeMetricGatherer {
private final ApplicationDimensions applicationDimensions;
private final NodeDimensions nodeDimensions;
private final MetricsManager metricsManager;
@Inject
public NodeMetricGatherer(MetricsManager metricsManager, ApplicationDimensions applicationDimensions, NodeDimensions nodeDimensions) {
this.metricsManager = metricsManager;
this.applicationDimensions = applicationDimensions;
this.nodeDimensions = nodeDimensions;
}
public List<MetricsPacket> gatherMetrics() {
List<MetricsPacket.Builder> metricPacketBuilders = new ArrayList<>();
addObjectToBuilders(metricPacketBuilders, HostLifeGatherer.getHostLifePacket());
return metricPacketBuilders.stream()
.map(metricPacketBuilder ->
metricPacketBuilder.putDimensionsIfAbsent(applicationDimensions.getDimensions())
.putDimensionsIfAbsent(nodeDimensions.getDimensions())
.putDimensionsIfAbsent(metricsManager.getExtraDimensions()).build()
).toList();
}
protected static void addObjectToBuilders(List<MetricsPacket.Builder> builders, JsonNode object) {
MetricsPacket.Builder builder = new MetricsPacket.Builder(ServiceId.toServiceId(object.get("application").textValue()));
builder.timestamp(object.get("timestamp").longValue());
if (object.has("metrics")) {
JsonNode metrics = object.get("metrics");
Iterator<?> keys = metrics.fieldNames();
while(keys.hasNext()) {
String key = (String) keys.next();
builder.putMetric(MetricId.toMetricId(key), metrics.get(key).asLong());
}
}
if (object.has("dimensions")) {
JsonNode dimensions = object.get("dimensions");
Iterator<?> keys = dimensions.fieldNames();
while(keys.hasNext()) {
String key = (String) keys.next();
builder.putDimension(DimensionId.toDimensionId(key), dimensions.get(key).asText());
}
}
builder.addConsumers(Set.of(ConsumerId.toConsumerId("Vespa")));
builders.add(builder);
}
}
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