bmp/bmp-impl/src/main/java/org/opendaylight/protocol/bmp/impl/config/BmpDeployerImpl.java

   1 /*
   2  * Copyright (c) 2017 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.protocol.bmp.impl.config;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.collect.Iterables;
  13 import java.net.InetSocketAddress;
  14 import java.util.Collection;
  15 import java.util.HashMap;
  16 import java.util.Map;
  17 import java.util.concurrent.TimeUnit;
  18 import javax.annotation.concurrent.GuardedBy;
  19 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  20 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  21 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification.ModificationType;
  22 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  23 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  26 import org.opendaylight.protocol.bmp.api.BmpDispatcher;
  27 import org.opendaylight.protocol.bmp.impl.app.BmpMonitoringStationImpl;
  28 import org.opendaylight.protocol.bmp.impl.spi.BmpMonitoringStation;
  29 import org.opendaylight.protocol.util.Ipv4Util;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.monitor.config.rev180329.OdlBmpMonitors;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.monitor.config.rev180329.odl.bmp.monitors.BmpMonitorConfig;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.monitor.config.rev180329.server.config.Server;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.monitor.rev180329.BmpMonitor;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.monitor.rev180329.MonitorId;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.monitor.rev180329.bmp.monitor.Monitor;
  36 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  37 import org.opendaylight.yangtools.yang.binding.DataObject;
  38 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  40 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  41 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  42 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  43 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46
  47 public final class BmpDeployerImpl implements ClusteredDataTreeChangeListener<OdlBmpMonitors>, AutoCloseable {
  48     private static final Logger LOG = LoggerFactory.getLogger(BmpDeployerImpl.class);
  49
  50     private static final long TIMEOUT_NS = TimeUnit.SECONDS.toNanos(5);
  51     private static final InstanceIdentifier<OdlBmpMonitors> ODL_BMP_MONITORS_IID =
  52             InstanceIdentifier.create(OdlBmpMonitors.class);
  53     private static final YangInstanceIdentifier BMP_MONITOR_YII =
  54             YangInstanceIdentifier.of(BmpMonitor.QNAME);
  55     private static final ContainerNode EMPTY_PARENT_NODE = Builders.containerBuilder().withNodeIdentifier(
  56             new NodeIdentifier(BmpMonitor.QNAME)).addChild(ImmutableNodes.mapNodeBuilder(Monitor.QNAME)
  57             .build()).build();
  58     private final BmpDispatcher dispatcher;
  59     @GuardedBy("this")
  60     private final Map<MonitorId, BmpMonitoringStationImpl> bmpMonitorServices = new HashMap<>();
  61     private final BmpDeployerDependencies bmpDeployerDependencies;
  62     @GuardedBy("this")
  63     private ListenerRegistration<BmpDeployerImpl> registration;
  64
  65     public BmpDeployerImpl(final BmpDispatcher dispatcher, final BmpDeployerDependencies bmpDeployerDependencies) {
  66         this.dispatcher = requireNonNull(dispatcher);
  67         this.bmpDeployerDependencies = requireNonNull(bmpDeployerDependencies);
  68     }
  69
  70     public synchronized void init() {
  71         final DOMDataWriteTransaction wTx = this.bmpDeployerDependencies.getDomDataBroker().newWriteOnlyTransaction();
  72         wTx.merge(LogicalDatastoreType.OPERATIONAL, BMP_MONITOR_YII, EMPTY_PARENT_NODE);
  73         wTx.submit();
  74         this.registration = this.bmpDeployerDependencies.getDataBroker().registerDataTreeChangeListener(
  75                 new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION, ODL_BMP_MONITORS_IID), this);
  76     }
  77
  78     @Override
  79     public synchronized void onDataTreeChanged(final Collection<DataTreeModification<OdlBmpMonitors>> changes) {
  80         final DataTreeModification<OdlBmpMonitors> dataTreeModification = Iterables.getOnlyElement(changes);
  81         final Collection<DataObjectModification<? extends DataObject>> rootNode = dataTreeModification.getRootNode()
  82                 .getModifiedChildren();
  83         if (rootNode.isEmpty()) {
  84             return;
  85         }
  86         rootNode.forEach(dto -> handleModification((DataObjectModification<BmpMonitorConfig>) dto));
  87     }
  88
  89     private synchronized void handleModification(final DataObjectModification<BmpMonitorConfig> config) {
  90         final ModificationType modificationType = config.getModificationType();
  91         LOG.trace("Bmp Monitor configuration has changed: {}, type modification {}", config, modificationType);
  92         switch (modificationType) {
  93             case DELETE:
  94                 removeBmpMonitor(config.getDataBefore().getMonitorId());
  95                 break;
  96             case SUBTREE_MODIFIED:
  97             case WRITE:
  98                 updateBmpMonitor(config.getDataAfter());
  99                 break;
 100             default:
 101                 break;
 102         }
 103     }
 104
 105     @SuppressWarnings("checkstyle:IllegalCatch")
 106     private synchronized void updateBmpMonitor(final BmpMonitorConfig bmpConfig) {
 107         final MonitorId monitorId = bmpConfig.getMonitorId();
 108         final BmpMonitoringStationImpl oldService = this.bmpMonitorServices.remove(monitorId);
 109         try {
 110             if (oldService != null) {
 111                 oldService.closeServiceInstance().get(TIMEOUT_NS, TimeUnit.NANOSECONDS);
 112                 oldService.close();
 113             }
 114
 115             final Server server = bmpConfig.getServer();
 116             final InetSocketAddress inetAddress =
 117                     Ipv4Util.toInetSocketAddress(server.getBindingAddress(), server.getBindingPort());
 118             final BmpMonitoringStationImpl monitor = new BmpMonitoringStationImpl(this.bmpDeployerDependencies,
 119                     this.dispatcher, monitorId, inetAddress, bmpConfig.getMonitoredRouter());
 120             this.bmpMonitorServices.put(monitorId, monitor);
 121         } catch (final Exception e) {
 122             LOG.error("Failed to create Bmp Monitor {}.", monitorId, e);
 123         }
 124
 125     }
 126
 127     @SuppressWarnings("checkstyle:IllegalCatch")
 128     private synchronized void removeBmpMonitor(final MonitorId monitorId) {
 129         final BmpMonitoringStation service = this.bmpMonitorServices.remove(monitorId);
 130         if (service != null) {
 131             LOG.debug("Closing Bmp Monitor {}.", monitorId);
 132             try {
 133                 service.close();
 134             } catch (final Exception e) {
 135                 LOG.error("Failed to close Bmp Monitor {}.", monitorId, e);
 136             }
 137         }
 138     }
 139
 140     @Override
 141     public synchronized void close() {
 142         if (this.registration != null) {
 143             this.registration.close();
 144             this.registration = null;
 145         }
 146     }
 147 }