qosservice/impl/src/main/java/org/opendaylight/netvirt/qosservice/QosAlertPortData.java

   1 /*
   2  * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. 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
   9 package org.opendaylight.netvirt.qosservice;
  10
  11 import java.math.BigInteger;
  12 import java.util.function.Supplier;
  13 import javax.annotation.concurrent.NotThreadSafe;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.qos.rev160613.qos.attributes.qos.policies.QosPolicy;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.node.connector.statistics.and.port.number.map.NodeConnectorStatisticsAndPortNumberMap;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 @NotThreadSafe
  21 public class QosAlertPortData {
  22     private static final Logger LOG = LoggerFactory.getLogger(QosAlertPortData.class);
  23     private static final BigInteger BIG_HUNDRED = new BigInteger("100");
  24
  25     private final Port port;
  26     private final QosNeutronUtils qosNeutronUtils;
  27     private final Supplier<BigInteger> alertThreshold;
  28     private volatile BigInteger rxPackets;
  29     private volatile BigInteger rxDroppedPackets;
  30     private volatile boolean statsDataInit;
  31
  32     public QosAlertPortData(final Port port, final QosNeutronUtils qosNeutronUtils,
  33             final Supplier<BigInteger> alertThreshold) {
  34         this.port = port;
  35         this.qosNeutronUtils = qosNeutronUtils;
  36         this.alertThreshold = alertThreshold;
  37     }
  38
  39     public void initPortData() {
  40         LOG.trace("Port {} data initialized", port.getUuid().getValue());
  41         statsDataInit = false;
  42     }
  43
  44     public void updatePortStatistics(NodeConnectorStatisticsAndPortNumberMap statsData) {
  45         LOG.trace("Port {} rx-packets {} tx-packets {} rx-dropped {} tx-dropped {}", port.getUuid().getValue(),
  46                            statsData.getPackets().getReceived(), statsData.getPackets().getTransmitted(),
  47                            statsData.getReceiveDrops(), statsData.getTransmitDrops());
  48         if (statsDataInit) {
  49             calculateAlertCondition(statsData);
  50         } else {
  51             statsDataInit = true;
  52         }
  53         rxPackets = statsData.getPackets().getReceived();
  54         rxDroppedPackets = statsData.getReceiveDrops();
  55     }
  56
  57     private void calculateAlertCondition(NodeConnectorStatisticsAndPortNumberMap statsData)  {
  58         BigInteger rxDiff = statsData.getPackets().getReceived().subtract(rxPackets);
  59         BigInteger rxDroppedDiff = statsData.getReceiveDrops().subtract(rxDroppedPackets);
  60
  61         if ((rxDiff.signum() < 0) || (rxDroppedDiff.signum() < 0)) {
  62             LOG.debug("Port {} counters reset", port.getUuid().getValue());
  63             initPortData(); // counters wrapped. wait for one more poll.
  64             return;
  65         }
  66         BigInteger rxTotalDiff = rxDiff.add(rxDroppedDiff);
  67         LOG.trace("Port {} rxDiff:{} rxDropped diff:{} total diff:{}", port.getUuid().getValue(), rxDiff,
  68                                                                             rxDroppedDiff, rxTotalDiff);
  69         QosPolicy qosPolicy = qosNeutronUtils.getQosPolicy(port);
  70
  71         if (qosPolicy == null) {
  72             return;
  73         }
  74
  75         if (rxDroppedDiff.multiply(BIG_HUNDRED).compareTo(rxTotalDiff.multiply(alertThreshold.get())) > 0) {
  76             LOG.trace(QosConstants.ALERT_MSG_FORMAT, qosPolicy.getName(), qosPolicy.getUuid().getValue(),
  77                     port.getUuid().getValue(), port.getNetworkId().getValue(), statsData.getPackets().getReceived(),
  78                                                                                         statsData.getReceiveDrops());
  79
  80             QosAlertGenerator.raiseAlert(qosPolicy.getName(), qosPolicy.getUuid().getValue(),
  81                     port.getUuid().getValue(), port.getNetworkId().getValue(), statsData.getPackets().getReceived(),
  82                                                                                           statsData.getReceiveDrops());
  83         }
  84
  85     }
  86 }