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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.metricsproxy.http.yamas;
import ai.vespa.metricsproxy.core.MetricsConsumers;
import ai.vespa.metricsproxy.core.MetricsManager;
import ai.vespa.metricsproxy.http.ValuesFetcher;
import ai.vespa.metricsproxy.metric.dimensions.ApplicationDimensions;
import ai.vespa.metricsproxy.metric.dimensions.NodeDimensions;
import ai.vespa.metricsproxy.metric.model.MetricsPacket;
import ai.vespa.metricsproxy.metric.model.json.JsonRenderingException;
import ai.vespa.metricsproxy.node.NodeMetricGatherer;
import ai.vespa.metricsproxy.service.VespaServices;
import com.yahoo.component.annotation.Inject;
import com.yahoo.container.handler.metrics.ErrorResponse;
import com.yahoo.container.handler.metrics.HttpHandlerBase;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.restapi.Path;
import com.yahoo.slime.JsonFormat;
import com.yahoo.slime.Slime;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.Executor;
import static com.yahoo.jdisc.Response.Status.INTERNAL_SERVER_ERROR;
import static com.yahoo.jdisc.Response.Status.OK;
/**
* @author olaa
*/
public class YamasHandler extends HttpHandlerBase {
public static final String V1_PATH = "/yamas/v1";
public static final String VALUES_PATH = V1_PATH + "/values";
public static final String CONSUMERS_PATH = V1_PATH + "/consumers";
private final ValuesFetcher valuesFetcher;
private final NodeMetricGatherer nodeMetricGatherer;
private final MetricsConsumers metricsConsumers;
@Inject
public YamasHandler(Executor executor,
MetricsManager metricsManager,
VespaServices vespaServices,
MetricsConsumers metricsConsumers,
ApplicationDimensions applicationDimensions,
NodeDimensions nodeDimensions) {
super(executor);
valuesFetcher = new ValuesFetcher(metricsManager, vespaServices, metricsConsumers);
this.nodeMetricGatherer = new NodeMetricGatherer(metricsManager, applicationDimensions, nodeDimensions);
this.metricsConsumers = metricsConsumers;
}
@Override
public Optional<HttpResponse> doHandle(URI requestUri, Path apiPath, String consumer) {
if (apiPath.matches(V1_PATH)) return Optional.of(resourceListResponse(requestUri, List.of(VALUES_PATH, CONSUMERS_PATH)));
if (apiPath.matches(VALUES_PATH)) return Optional.of(valuesResponse(consumer, requestUri.getQuery()));
if (apiPath.matches(CONSUMERS_PATH)) return Optional.of(consumersResponse());
return Optional.empty();
}
private HttpResponse valuesResponse(String consumer, String query) {
try {
List<MetricsPacket> metrics = new ArrayList<>(consumer == null ? valuesFetcher.fetchAllMetrics() : valuesFetcher.fetch(consumer));
metrics.addAll(nodeMetricGatherer.gatherMetrics());
return new YamasResponse(OK, metrics, useJsonl(query));
} catch (JsonRenderingException e) {
return new ErrorResponse(INTERNAL_SERVER_ERROR, e.getMessage());
}
}
private HttpResponse consumersResponse() {
var slime = new Slime();
var consumers = slime.setObject().setArray("consumers");
metricsConsumers.getAllConsumers().forEach(consumer -> consumers.addString(consumer.id));
return new HttpResponse(OK) {
@Override
public String getContentType() {
return "application/json";
}
@Override
public void render(OutputStream outputStream) throws IOException {
new JsonFormat(true).encode(outputStream, slime);
}
};
}
private boolean useJsonl(String query) {
return query != null && query.contains("jsonl=true");
}
}
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