io.vertx.ext.web.handler.impl.ResponseTimeHandlerImpl Maven / Gradle / Ivy
/*
* Copyright 2014 Red Hat, Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* The Apache License v2.0 is available at
* http://www.opensource.org/licenses/apache2.0.php
*
* You may elect to redistribute this code under either of these licenses.
*/
package io.vertx.ext.web.handler.impl;
import io.vertx.core.http.HttpHeaders;
import io.vertx.ext.web.RoutingContext;
import io.vertx.ext.web.handler.ResponseTimeHandler;
import static java.util.concurrent.TimeUnit.*;
/**
* @author Tim Fox
*/
public class ResponseTimeHandlerImpl implements ResponseTimeHandler {
private static final CharSequence HEADER_NAME = HttpHeaders.createOptimized("x-response-time");
@Override
public void handle(RoutingContext ctx) {
long start = System.nanoTime();
ctx.addHeadersEndHandler(v -> {
long duration = MILLISECONDS.convert(System.nanoTime() - start, NANOSECONDS);
ctx.response().putHeader(HEADER_NAME, duration + "ms");
});
ctx.next();
}
}