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.util.function.Supplier;
  12 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.qos.rev160613.qos.attributes.qos.policies.QosPolicy;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.node.connector.statistics.and.port.number.map.NodeConnectorStatisticsAndPortNumberMap;
  15 import org.opendaylight.yangtools.yang.common.Uint64;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 /**
  20  * This class is ThreadSafe.
  21  */
  22 public class QosAlertPortData {
  23     private static final Logger LOG = LoggerFactory.getLogger(QosAlertPortData.class);
  24     private static final Uint64 BIG_HUNDRED = Uint64.valueOf("100").intern();
  25
  26     private final Port port;
  27     private final QosNeutronUtils qosNeutronUtils;
  28     private final Supplier<Uint64> alertThreshold;
  29     private volatile Uint64 rxPackets;
  30     private volatile Uint64 rxDroppedPackets;
  31     private volatile boolean statsDataInit;
  32
  33     public QosAlertPortData(final Port port, final QosNeutronUtils qosNeutronUtils,
  34             final Supplier<Uint64> alertThreshold) {
  35         this.port = port;
  36         this.qosNeutronUtils = qosNeutronUtils;
  37         this.alertThreshold = alertThreshold;
  38     }
  39
  40     public void initPortData() {
  41         LOG.trace("Port {} data initialized", port.getUuid().getValue());
  42         statsDataInit = false;
  43     }
  44
  45     public String toString() {
  46         return "Uuid: " + this.port.getUuid().getValue() + ", rx_packets: " + rxPackets
  47                 + ", rx_dropped_packets: " + rxDroppedPackets;
  48     }
  49
  50     public void updatePortStatistics(NodeConnectorStatisticsAndPortNumberMap statsData) {
  51         LOG.trace("Port {} rx-packets {} tx-packets {} rx-dropped {} tx-dropped {}", port.getUuid().getValue(),
  52                            statsData.getPackets().getReceived(), statsData.getPackets().getTransmitted(),
  53                            statsData.getReceiveDrops(), statsData.getTransmitDrops());
  54         if (statsDataInit) {
  55             calculateAlertCondition(statsData);
  56         } else {
  57             statsDataInit = true;
  58         }
  59         rxPackets = statsData.getPackets().getReceived();
  60         rxDroppedPackets = statsData.getReceiveDrops();
  61     }
  62
  63     private void calculateAlertCondition(NodeConnectorStatisticsAndPortNumberMap statsData)  {
  64         Uint64 rxDiff = Uint64.valueOf(statsData.getPackets().getReceived().toJava().subtract(rxPackets.toJava()));
  65         Uint64 rxDroppedDiff = Uint64.valueOf(statsData.getReceiveDrops().toJava().subtract(rxDroppedPackets.toJava()));
  66
  67         if ((rxDiff.toJava().signum() < 0) || (rxDroppedDiff.toJava().signum() < 0)) {
  68             LOG.debug("Port {} counters reset", port.getUuid().getValue());
  69             initPortData(); // counters wrapped. wait for one more poll.
  70             return;
  71         }
  72         Uint64 rxTotalDiff = Uint64.valueOf(rxDiff.toJava().add(rxDroppedDiff.toJava()));
  73         LOG.trace("Port {} rxDiff:{} rxDropped diff:{} total diff:{}", port.getUuid().getValue(), rxDiff,
  74                                                                             rxDroppedDiff, rxTotalDiff);
  75         QosPolicy qosPolicy = qosNeutronUtils.getQosPolicy(port);
  76
  77         if (qosPolicy == null) {
  78             return;
  79         }
  80
  81         if (rxDroppedDiff.toJava().multiply(BIG_HUNDRED.toJava())
  82                 .compareTo(rxTotalDiff.toJava().multiply(alertThreshold.get().toJava())) > 0) {
  83             LOG.trace(QosConstants.ALERT_MSG_FORMAT, qosPolicy.getName(), qosPolicy.getUuid().getValue(),
  84                     port.getUuid().getValue(), port.getNetworkId().getValue(), statsData.getPackets().getReceived(),
  85                                                                                         statsData.getReceiveDrops());
  86
  87             QosAlertGenerator.raiseAlert(qosPolicy.getName(), qosPolicy.getUuid().getValue(),
  88                     port.getUuid().getValue(), port.getNetworkId().getValue(),
  89                     statsData.getPackets().getReceived(), statsData.getReceiveDrops());
  90         }
  91
  92     }
  93 }