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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.http;
import ai.vespa.metricsproxy.core.MetricsConsumers;
import ai.vespa.metricsproxy.core.MetricsManager;
import ai.vespa.metricsproxy.metric.model.ConsumerId;
import ai.vespa.metricsproxy.metric.model.MetricsPacket;
import ai.vespa.metricsproxy.metric.model.json.JsonRenderingException;
import ai.vespa.metricsproxy.service.VespaServices;
import java.time.Instant;
import java.util.List;
import java.util.Optional;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import static ai.vespa.metricsproxy.metric.model.ConsumerId.toConsumerId;
/**
* Generates metrics values in json format for the metrics/v1 rest api.
*
* @author gjoranv
*/
public class ValuesFetcher {
private static final Logger log = Logger.getLogger(ValuesFetcher.class.getName());
public static final ConsumerId defaultMetricsConsumerId = toConsumerId("default");
private final MetricsManager metricsManager;
private final VespaServices vespaServices;
private final MetricsConsumers metricsConsumers;
public ValuesFetcher(MetricsManager metricsManager,
VespaServices vespaServices,
MetricsConsumers metricsConsumers) {
this.metricsManager = metricsManager;
this.vespaServices = vespaServices;
this.metricsConsumers = metricsConsumers;
}
public List<MetricsPacket> fetch(String requestedConsumer) throws JsonRenderingException {
ConsumerId consumer = getConsumerOrDefault(requestedConsumer, metricsConsumers);
return metricsManager.getMetrics(vespaServices.getVespaServices(), Instant.now(), consumer)
.stream()
.filter(metricsPacket -> metricsPacket.consumers().contains(consumer))
.collect(Collectors.toList());
}
public MetricsPacket.Builder[] fetchMetricsAsBuilders(String requestedConsumer) throws JsonRenderingException {
ConsumerId consumer = getConsumerOrDefault(requestedConsumer, metricsConsumers);
List<MetricsPacket.Builder> builders = metricsManager.getMetricsAsBuilders(vespaServices.getVespaServices(), Instant.now(), consumer)
.stream()
.filter(builder -> builder.hasConsumer(consumer))
.collect(Collectors.toList());
return builders.toArray(new MetricsPacket.Builder[builders.size()]);
}
public List<MetricsPacket> fetchAllMetrics() throws JsonRenderingException {
return metricsManager.getMetrics(vespaServices.getVespaServices(), Instant.now());
}
public static ConsumerId getConsumerOrDefault(String requestedConsumer, MetricsConsumers consumers) {
if (requestedConsumer == null) return defaultMetricsConsumerId;
Optional<ConsumerId> consumerId = consumers.getAllConsumers().stream()
.filter(consumer -> consumer.id.equalsIgnoreCase(requestedConsumer))
.findFirst();
if (consumerId.isPresent()) return consumerId.get();
log.info("No consumer with id '" + requestedConsumer + "' - using the default consumer instead.");
return defaultMetricsConsumerId;
}
}
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