elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/l2gw/listeners/L2GatewayConnectionListener.java

   1 /*
   2  * Copyright (c) 2016, 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 package org.opendaylight.netvirt.elan.l2gw.listeners;
   9
  10 import static java.util.stream.Collectors.groupingBy;
  11 import static java.util.stream.Collectors.toList;
  12 import static java.util.stream.Collectors.toMap;
  13 import static org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType.CONFIGURATION;
  14
  15 import com.google.common.base.Optional;
  16 import com.google.common.util.concurrent.FutureCallback;
  17 import com.google.common.util.concurrent.Futures;
  18 import com.google.common.util.concurrent.MoreExecutors;
  19 import java.util.List;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.concurrent.TimeUnit;
  23 import java.util.function.BiPredicate;
  24 import java.util.function.Function;
  25 import java.util.function.Predicate;
  26 import javax.annotation.PostConstruct;
  27 import javax.inject.Inject;
  28 import javax.inject.Singleton;
  29
  30 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  31 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  32 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  33 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  34 import org.opendaylight.genius.utils.hwvtep.HwvtepSouthboundUtils;
  35 import org.opendaylight.infrautils.metrics.Counter;
  36 import org.opendaylight.infrautils.metrics.Labeled;
  37 import org.opendaylight.infrautils.metrics.MetricDescriptor;
  38 import org.opendaylight.infrautils.metrics.MetricProvider;
  39 import org.opendaylight.netvirt.elan.l2gw.ha.HwvtepHAUtil;
  40 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  41 import org.opendaylight.netvirt.elan.utils.Scheduler;
  42 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayCache;
  43 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  44 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.PhysicalSwitchAugmentation;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.physical._switch.attributes.TunnelIps;
  51 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  52 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  53 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  54 import org.slf4j.Logger;
  55 import org.slf4j.LoggerFactory;
  56
  57 @Singleton
  58 public class L2GatewayConnectionListener extends AsyncClusteredDataTreeChangeListenerBase<L2gatewayConnection,
  59         L2GatewayConnectionListener> {
  60     private static final Logger LOG = LoggerFactory.getLogger(L2GatewayConnectionListener.class);
  61     private static final int MAX_READ_TRIALS = 120;
  62
  63     private static final Function<Node, InstanceIdentifier<Node>> TO_GLOBAL_PATH =
  64             HwvtepHAUtil::getGlobalNodePathFromPSNode;
  65
  66     private static final Function<Node, InstanceIdentifier<Node>> TO_NODE_PATH =
  67         (node) -> HwvtepSouthboundUtils.createInstanceIdentifier(node.getNodeId());
  68
  69     private static final Function<InstanceIdentifier<Node>, String> GET_DEVICE_NAME = HwvtepHAUtil::getPsName;
  70
  71     private static final Predicate<InstanceIdentifier<Node>> IS_PS_NODE = (psIid) ->
  72             HwvtepHAUtil.getPsName(psIid) != null;
  73
  74     private static final Predicate<Node> IS_HA_PARENT_NODE = (node) -> {
  75         HwvtepGlobalAugmentation augmentation = node.augmentation(HwvtepGlobalAugmentation.class);
  76         if (augmentation != null && augmentation.getManagers() != null) {
  77             return augmentation.getManagers().stream().anyMatch(
  78                 manager -> manager.key().getTarget().getValue().equals(HwvtepHAUtil.MANAGER_KEY));
  79         }
  80         return false;
  81     };
  82
  83     private static final BiPredicate<InstanceIdentifier<Node>, Node> PS_NODE_OF_PARENT_NODE =
  84         (psIid, node) -> psIid.firstKeyOf(Node.class).getNodeId().getValue().contains(node.getNodeId().getValue());
  85
  86     private final DataBroker broker;
  87     private final L2GatewayConnectionUtils l2GatewayConnectionUtils;
  88     private final Scheduler scheduler;
  89     private final L2GatewayCache l2GatewayCache;
  90     private final Labeled<Labeled<Counter>> elanConnectionsCounter;
  91
  92     @Inject
  93     public L2GatewayConnectionListener(final DataBroker db, L2GatewayConnectionUtils l2GatewayConnectionUtils,
  94                                        Scheduler scheduler, L2GatewayCache l2GatewayCache,
  95                                        MetricProvider metricProvider) {
  96         super(L2gatewayConnection.class, L2GatewayConnectionListener.class);
  97         this.broker = db;
  98         this.l2GatewayConnectionUtils = l2GatewayConnectionUtils;
  99         this.scheduler = scheduler;
 100         this.l2GatewayCache = l2GatewayCache;
 101         this.elanConnectionsCounter = metricProvider.newCounter(MetricDescriptor.builder()
 102                 .anchor(this).project("netvirt").module("l2gw").id("connections").build(), "modification", "elan");
 103     }
 104
 105     @PostConstruct
 106     public void init() {
 107         loadL2GwDeviceCache(1);
 108     }
 109
 110     @Override
 111     protected void add(final InstanceIdentifier<L2gatewayConnection> identifier, final L2gatewayConnection input) {
 112         LOG.trace("Adding L2gatewayConnection: {}", input);
 113         elanConnectionsCounter
 114                 .label(DataObjectModification.ModificationType.WRITE.name())
 115                 .label(input.getNetworkId().getValue()).increment();
 116         // Get associated L2GwId from 'input'
 117         // Create logical switch in each of the L2GwDevices part of L2Gw
 118         // Logical switch name is network UUID
 119         // Add L2GwDevices to ELAN
 120         l2GatewayConnectionUtils.addL2GatewayConnection(input);
 121     }
 122
 123     @Override
 124     protected void remove(InstanceIdentifier<L2gatewayConnection> identifier, L2gatewayConnection input) {
 125         LOG.trace("Removing L2gatewayConnection: {}", input);
 126         elanConnectionsCounter
 127                 .label(DataObjectModification.ModificationType.DELETE.name())
 128                 .label(input.getNetworkId().getValue()).increment();
 129         l2GatewayConnectionUtils.deleteL2GatewayConnection(input);
 130     }
 131
 132     @Override
 133     protected void update(InstanceIdentifier<L2gatewayConnection> identifier, L2gatewayConnection original,
 134             L2gatewayConnection update) {
 135         LOG.trace("Updating L2gatewayConnection : original value={}, updated value={}", original, update);
 136     }
 137
 138     @Override
 139     protected InstanceIdentifier<L2gatewayConnection> getWildCardPath() {
 140         return InstanceIdentifier.create(Neutron.class).child(L2gatewayConnections.class)
 141             .child(L2gatewayConnection.class);
 142     }
 143
 144     @Override
 145     protected L2GatewayConnectionListener getDataTreeChangeListener() {
 146         return this;
 147     }
 148
 149     private void loadL2GwDeviceCache(final int trialNo) {
 150         scheduler.getScheduledExecutorService().schedule(() -> {
 151             if (trialNo == MAX_READ_TRIALS) {
 152                 LOG.error("Failed to read config topology");
 153                 return;
 154             }
 155             ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 156             InstanceIdentifier<Topology> topoIid = HwvtepSouthboundUtils.createHwvtepTopologyInstanceIdentifier();
 157             Futures.addCallback(tx.read(CONFIGURATION, topoIid), new FutureCallback<Optional<Topology>>() {
 158                 @Override
 159                 public void onSuccess(Optional<Topology> topologyOptional) {
 160                     if (topologyOptional != null && topologyOptional.isPresent()) {
 161                         loadL2GwDeviceCache(topologyOptional.get().getNode());
 162                     }
 163                     registerListener(CONFIGURATION, broker);
 164                 }
 165
 166                 @Override
 167                 public void onFailure(Throwable throwable) {
 168                     loadL2GwDeviceCache(trialNo + 1);
 169                 }
 170             }, MoreExecutors.directExecutor());
 171             tx.close();
 172         }, 1, TimeUnit.SECONDS);
 173     }
 174
 175     private void loadL2GwDeviceCache(List<Node> nodes) {
 176         if (nodes == null) {
 177             LOG.debug("No config topology nodes are present");
 178             return;
 179         }
 180         Map<InstanceIdentifier<Node>, Node> allNodes = nodes
 181                 .stream()
 182                 .collect(toMap(TO_NODE_PATH, Function.identity()));
 183
 184         LOG.trace("Loading all config nodes");
 185
 186         Set<InstanceIdentifier<Node>> allIids = allNodes.keySet();
 187
 188         Map<String, List<InstanceIdentifier<Node>>> psNodesByDeviceName = allIids
 189                 .stream()
 190                 .filter(IS_PS_NODE)
 191                 .collect(groupingBy(GET_DEVICE_NAME, toList()));
 192
 193         //Process HA nodes
 194         allNodes.values().stream()
 195                 .filter(IS_HA_PARENT_NODE)
 196                 .forEach(parentNode -> allIids.stream()
 197                         .filter(IS_PS_NODE)
 198                         .filter(psIid -> PS_NODE_OF_PARENT_NODE.test(psIid, parentNode))
 199                         .forEach(psIid -> addL2DeviceToCache(psIid, parentNode, allNodes.get(psIid))));
 200
 201         //Process non HA nodes there will be only one ps node iid for each device for non ha nodes
 202         psNodesByDeviceName.values().stream()
 203                 .filter(psIids -> psIids.size() == 1)
 204                 .map(psIids -> psIids.get(0))
 205                 .forEach(psIid -> {
 206                     Node psNode = allNodes.get(psIid);
 207                     Node globalNode = allNodes.get(TO_GLOBAL_PATH.apply(psNode));
 208                     if (globalNode != null) {
 209                         addL2DeviceToCache(psIid, globalNode, psNode);
 210                     }
 211                 });
 212     }
 213
 214     void addL2DeviceToCache(InstanceIdentifier<Node> psIid, Node globalNode, Node psNode) {
 215         LOG.trace("Adding device to cache {}", psNode.getNodeId().getValue());
 216         String deviceName = HwvtepHAUtil.getPsName(psIid);
 217         L2GatewayDevice l2GwDevice = l2GatewayCache.addOrGet(deviceName);
 218         l2GwDevice.setConnected(true);
 219         l2GwDevice.setHwvtepNodeId(globalNode.getNodeId().getValue());
 220
 221         List<TunnelIps> tunnelIps = psNode.augmentation(PhysicalSwitchAugmentation.class) != null
 222                 ? psNode.augmentation(PhysicalSwitchAugmentation.class).getTunnelIps() : null;
 223         if (tunnelIps != null) {
 224             for (TunnelIps tunnelIp : tunnelIps) {
 225                 IpAddress tunnelIpAddr = tunnelIp.getTunnelIpsKey();
 226                 l2GwDevice.addTunnelIp(tunnelIpAddr);
 227             }
 228         }
 229     }
 230 }