bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/config/AppPeer.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. 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.protocol.bgp.rib.impl.config;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.base.Strings;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import java.util.Objects;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
  19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  20 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  21 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  22 import org.opendaylight.protocol.bgp.openconfig.spi.BGPOpenConfigMappingService;
  23 import org.opendaylight.protocol.bgp.rib.impl.ApplicationPeer;
  24 import org.opendaylight.protocol.bgp.rib.impl.spi.BgpDeployer.WriteConfiguration;
  25 import org.opendaylight.protocol.bgp.rib.impl.spi.RIB;
  26 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.Config;
  27 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbors.Neighbor;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.ApplicationRib;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.ApplicationRibId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.Tables;
  32 import org.opendaylight.yangtools.yang.common.QName;
  33 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public final class AppPeer implements PeerBean {
  38     private static final Logger LOG = LoggerFactory.getLogger(AppPeer.class);
  39     private static final QName APP_ID_QNAME = QName.create(ApplicationRib.QNAME, "id").intern();
  40     private Neighbor currentConfiguration;
  41     private BgpAppPeerSingletonService bgpAppPeerSingletonService;
  42     private BGPOpenConfigMappingService mappingService;
  43
  44     @Override
  45     public void start(final RIB rib, final Neighbor neighbor, final BGPOpenConfigMappingService mappingService,
  46         final WriteConfiguration configurationWriter) {
  47         Preconditions.checkState(this.bgpAppPeerSingletonService == null, "Previous peer instance was not closed.");
  48         this.currentConfiguration = neighbor;
  49         this.mappingService = mappingService;
  50         this.bgpAppPeerSingletonService = new BgpAppPeerSingletonService(rib, createAppRibId(neighbor),
  51             neighbor.getNeighborAddress().getIpv4Address(), configurationWriter);
  52     }
  53
  54     @Override
  55     public void restart(final RIB rib, final BGPOpenConfigMappingService mappingService) {
  56         Preconditions.checkState(this.currentConfiguration != null);
  57         start(rib, this.currentConfiguration, mappingService, null);
  58     }
  59
  60     @Override
  61     public void close() {
  62         try {
  63             this.bgpAppPeerSingletonService.close();
  64             this.bgpAppPeerSingletonService = null;
  65         } catch (final Exception e) {
  66             LOG.warn("Failed to close application peer instance", e);
  67         }
  68     }
  69
  70     @Override
  71     public Boolean containsEqualConfiguration(final Neighbor neighbor) {
  72         return Objects.equals(this.currentConfiguration.getKey(), neighbor.getKey())
  73                 && this.mappingService.isApplicationPeer(neighbor);
  74     }
  75
  76     private static ApplicationRibId createAppRibId(final Neighbor neighbor) {
  77         final Config config = neighbor.getConfig();
  78         if (config != null && !Strings.isNullOrEmpty(config.getDescription())) {
  79             return new ApplicationRibId(config.getDescription());
  80         }
  81         return new ApplicationRibId(neighbor.getNeighborAddress().getIpv4Address().getValue());
  82     }
  83
  84     private final class BgpAppPeerSingletonService implements ClusterSingletonService, AutoCloseable {
  85         private final ApplicationPeer applicationPeer;
  86         private final DOMDataTreeChangeService dataTreeChangeService;
  87         private final ApplicationRibId appRibId;
  88         private ClusterSingletonServiceRegistration singletonServiceRegistration;
  89         private final ServiceGroupIdentifier serviceGroupIdentifier;
  90         private final WriteConfiguration configurationWriter;
  91
  92         BgpAppPeerSingletonService(final RIB rib, final ApplicationRibId appRibId, final Ipv4Address neighborAddress,
  93             final WriteConfiguration configurationWriter) {
  94             this.applicationPeer = new ApplicationPeer(appRibId, neighborAddress, rib);
  95             this.appRibId = appRibId;
  96             this.dataTreeChangeService = rib.getService();
  97             this.serviceGroupIdentifier = rib.getRibIServiceGroupIdentifier();
  98             this.configurationWriter = configurationWriter;
  99             LOG.info("Application Peer Singleton Service {} registered", getIdentifier());
 100             //this need to be always the last step
 101             this.singletonServiceRegistration = rib.registerClusterSingletonService(this);
 102         }
 103
 104         @Override
 105         public void close() throws Exception {
 106             if (this.singletonServiceRegistration != null) {
 107                 this.singletonServiceRegistration.close();
 108                 this.singletonServiceRegistration = null;
 109             }
 110         }
 111
 112         @Override
 113         public void instantiateServiceInstance() {
 114             if(this.configurationWriter != null) {
 115                 this.configurationWriter.apply();
 116             }
 117             LOG.info("Application Peer Singleton Service {} instantiated", getIdentifier());
 118             final YangInstanceIdentifier yangIId = YangInstanceIdentifier.builder().node(ApplicationRib.QNAME)
 119                 .nodeWithKey(ApplicationRib.QNAME, APP_ID_QNAME, this.appRibId.getValue()).node(Tables.QNAME).node(Tables.QNAME).build();
 120             this.applicationPeer.instantiateServiceInstance(this.dataTreeChangeService,
 121                 new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, yangIId));
 122         }
 123
 124         @Override
 125         public ListenableFuture<Void> closeServiceInstance() {
 126             LOG.info("Application Peer Singleton Service {} instance closed", getIdentifier());
 127             this.applicationPeer.close();
 128             return Futures.immediateFuture(null);
 129         }
 130
 131         @Override
 132         public ServiceGroupIdentifier getIdentifier() {
 133             return this.serviceGroupIdentifier;
 134         }
 135     }
 136 }