groupbasedpolicy-ise-adapter/src/main/java/org/opendaylight/groupbasedpolicy/gbp_ise_adapter/impl/GbpIseAdapterProvider.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.groupbasedpolicy.gbp_ise_adapter.impl;
  10
  11 import com.google.common.base.Preconditions;
  12 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  13 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  14 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker;
  17 import org.opendaylight.controller.sal.binding.api.BindingAwareProvider;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.gbp.ise.adapter.model.rev160630.GbpIseAdapter;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.gbp.ise.adapter.model.rev160630.gbp.ise.adapter.IseHarvestConfig;
  20 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 /**
  26  * Purpose: main provider of gbp-ise adapter (for reading sgts and generating EndpointPolicyTemplates)
  27  */
  28 public class GbpIseAdapterProvider implements AutoCloseable, BindingAwareProvider {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(GbpIseAdapterProvider.class);
  31
  32     private final DataBroker dataBroker;
  33     private ListenerRegistration<DataTreeChangeListener<IseHarvestConfig>> registration;
  34
  35     public GbpIseAdapterProvider(final DataBroker dataBroker, final BindingAwareBroker brokerDependency) {
  36         this.dataBroker = Preconditions.checkNotNull(dataBroker, "provided dataBroker must not be null");
  37         brokerDependency.registerProvider(this);
  38     }
  39
  40     @Override
  41     public void close() throws Exception {
  42         if (registration != null) {
  43             LOG.info("closing GbpIseAdapterProvider");
  44             registration.close();
  45             registration = null;
  46         }
  47     }
  48
  49     @Override
  50     public void onSessionInitiated(final BindingAwareBroker.ProviderContext providerContext) {
  51         LOG.info("Starting GbpIseAdapterProvider ..");
  52
  53         // setup harvesting and processing pipeline
  54         final SgtInfoProcessor epgGenerator = new SgtToEpgGeneratorImpl(dataBroker);
  55         final SgtInfoProcessor templateGenerator = new SgtToEPTemplateGeneratorImpl(dataBroker);
  56         final GbpIseSgtHarvester gbpIseSgtHarvester = new GbpIseSgtHarvesterImpl(epgGenerator, templateGenerator);
  57         final GbpIseConfigListenerImpl gbpIseConfigListener = new GbpIseConfigListenerImpl(dataBroker, gbpIseSgtHarvester);
  58
  59         // build data-tree path
  60         final DataTreeIdentifier<IseHarvestConfig> dataTreePath = new DataTreeIdentifier<>(
  61                 LogicalDatastoreType.CONFIGURATION,
  62                 InstanceIdentifier.create(GbpIseAdapter.class).child(IseHarvestConfig.class));
  63
  64         // register config listener
  65         registration = dataBroker.registerDataTreeChangeListener(dataTreePath,
  66                 gbpIseConfigListener);
  67
  68         LOG.info("Started");
  69     }
  70 }