netconf/tools/netconf-test-perf/src/main/java/org/opendaylight/netconf/test/perf/notifications/NotificationsCounter.java

   1 /*
   2  * Copyright (c) 2021 Pantheon Technologies, s.r.o. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.netconf.test.perf.notifications;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.base.Stopwatch;
  12 import java.util.concurrent.TimeUnit;
  13 import java.util.concurrent.atomic.AtomicLong;
  14 import java.util.regex.Matcher;
  15 import java.util.regex.Pattern;
  16 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  17 import org.opendaylight.mdsal.dom.api.DOMNotification;
  18 import org.opendaylight.mdsal.dom.api.DOMNotificationListener;
  19 import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.cisco.ios.xr.ip._static.cfg.rev130722.VRFPREFIXTABLE;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 public class NotificationsCounter implements DOMNotificationListener {
  24
  25     private static final Logger LOG = LoggerFactory.getLogger(NotificationsCounter.class);
  26
  27     /**
  28      * Custom pattern to identify nodes where performance should be measured.
  29      */
  30     private static final Pattern NOTIFICATION_NUMBER_PATTERN = Pattern.compile(".*-notif-([0-9]+)");
  31
  32     private final String nodeId;
  33     private final BindingNormalizedNodeSerializer serializer;
  34     private final AtomicLong notifCounter;
  35     private final long expectedNotificationCount;
  36     private Stopwatch stopWatch;
  37     private long totalPrefixesReceived = 0;
  38
  39     public NotificationsCounter(final String nodeId, final BindingNormalizedNodeSerializer serializer) {
  40         this.nodeId = nodeId;
  41         this.serializer = serializer;
  42         final Matcher matcher = NOTIFICATION_NUMBER_PATTERN.matcher(nodeId);
  43         Preconditions.checkArgument(matcher.matches());
  44         expectedNotificationCount = Long.parseLong(matcher.group(1));
  45         Preconditions.checkArgument(expectedNotificationCount > 0);
  46         notifCounter = new AtomicLong(expectedNotificationCount);
  47     }
  48
  49
  50     @Override
  51     public void onNotification(final DOMNotification domNotification) {
  52         final long andDecrement = notifCounter.getAndDecrement();
  53
  54         if (andDecrement == expectedNotificationCount) {
  55             stopWatch = Stopwatch.createStarted();
  56             LOG.info("First notification received at {}", stopWatch);
  57         }
  58
  59         LOG.debug("Notification received, {} to go.", andDecrement);
  60         if (LOG.isTraceEnabled()) {
  61             LOG.trace("Notification received: {}", domNotification);
  62         }
  63
  64         final var notification = serializer.fromNormalizedNodeNotification(domNotification.getType(),
  65             domNotification.getBody());
  66         if (notification instanceof VRFPREFIXTABLE) {
  67             totalPrefixesReceived += ((VRFPREFIXTABLE)notification).getVrfPrefixes().getVrfPrefix().size();
  68         }
  69
  70         if (andDecrement == 1) {
  71             stopWatch.stop();
  72             LOG.info("Last notification received at {}", stopWatch);
  73             LOG.info("Elapsed ms for {} notifications: {}", expectedNotificationCount,
  74                 stopWatch.elapsed(TimeUnit.MILLISECONDS));
  75             LOG.info("Performance (notifications/second): {}",
  76                 expectedNotificationCount * 1.0 / stopWatch.elapsed(TimeUnit.MILLISECONDS) * 1000);
  77             LOG.info("Performance (prefixes/second): {}",
  78                 totalPrefixesReceived * 1.0 / stopWatch.elapsed(TimeUnit.MILLISECONDS) * 1000);
  79         }
  80     }
  81
  82 }