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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.core;
import ai.vespa.metrics.ContainerMetrics;
import com.yahoo.jdisc.Metric;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.application.BindingMatch;
import com.yahoo.jdisc.application.UriPattern;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* Common HTTP request handler metrics code.
*
* @author jonmv
*/
public class HandlerMetricContextUtil {
public static void onHandle(Request request, Metric metric, Class<?> handlerClass) {
metric.add(ContainerMetrics.HANDLED_REQUESTS.baseName(), 1, contextFor(request, metric, handlerClass));
}
public static void onHandled(Request request, Metric metric, Class<?> handlerClass) {
metric.set(ContainerMetrics.HANDLED_LATENCY.baseName(), request.timeElapsed(TimeUnit.MILLISECONDS), contextFor(request, metric, handlerClass));
}
public static Metric.Context contextFor(Request request, Metric metric, Class<?> handlerClass) {
return contextFor(request, Map.of(), metric, handlerClass);
}
public static Metric.Context contextFor(Request request, Map<String, String> extraDimensions, Metric metric, Class<?> handlerClass) {
BindingMatch<?> match = request.getBindingMatch();
if (match == null) return null;
UriPattern matched = match.matched();
if (matched == null) return null;
String name = matched.toString();
String endpoint = request.headers().containsKey("Host") ? request.headers().get("Host").get(0) : null;
Map<String, String> dimensions = new HashMap<>(extraDimensions.size() + 5);
dimensions.put("handler", name);
if (endpoint != null) {
dimensions.put("endpoint", endpoint);
}
URI uri = request.getUri();
dimensions.put("scheme", uri.getScheme());
dimensions.put("port", Integer.toString(uri.getPort()));
dimensions.put("handler-name", handlerClass.getName());
dimensions.putAll(extraDimensions);
return metric.createContext(dimensions);
}
}
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