openstack/net-virt/src/main/java/org/opendaylight/netvirt/openstack/netvirt/NetvirtProvider.java

   1 /*
   2  * Copyright (c) 2015 Red Hat, 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.netvirt.openstack.netvirt;
  10
  11 import com.google.common.base.Optional;
  12 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipState;
  13 import org.opendaylight.netvirt.openstack.netvirt.api.Constants;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
  16 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
  17 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext;
  18 import org.opendaylight.controller.sal.binding.api.BindingAwareProvider;
  19 import org.osgi.framework.BundleContext;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 /**
  24  * @author Sam Hague (shague@redhat.com)
  25  */
  26 public class NetvirtProvider implements BindingAwareProvider, AutoCloseable {
  27     private static final Logger LOG = LoggerFactory.getLogger(NetvirtProvider.class);
  28     private BundleContext bundleContext = null;
  29     private static DataBroker dataBroker = null;
  30     private ConfigActivator activator;
  31     private static EntityOwnershipService entityOwnershipService;
  32     private static final Entity ownerInstanceEntity = new Entity(
  33             Constants.NETVIRT_OWNER_ENTITY_TYPE, Constants.NETVIRT_OWNER_ENTITY_TYPE);
  34     private boolean conntrackEnabled = false;
  35
  36     public NetvirtProvider(BundleContext bundleContext, EntityOwnershipService eos) {
  37         LOG.info("NetvirtProvider: bundleContext: {}", bundleContext);
  38         this.bundleContext = bundleContext;
  39         entityOwnershipService = eos;
  40     }
  41
  42     public static boolean isMasterProviderInstance() {
  43         if (entityOwnershipService != null) {
  44             Optional<EntityOwnershipState> state = entityOwnershipService.getOwnershipState(ownerInstanceEntity);
  45             return state.isPresent() && state.get().isOwner();
  46         }
  47         return false;
  48     }
  49
  50     public static boolean isMasterElected(){
  51         if (entityOwnershipService != null) {
  52             Optional<EntityOwnershipState> state = entityOwnershipService.getOwnershipState(ownerInstanceEntity);
  53             return state.isPresent() && state.get().hasOwner();
  54         }
  55         return false;
  56     }
  57
  58     @Override
  59     public void close() throws Exception {
  60         LOG.info("NetvirtProvider closed");
  61         activator.stop(bundleContext);
  62     }
  63
  64     @Override
  65     public void onSessionInitiated(ProviderContext providerContext) {
  66         dataBroker = providerContext.getSALService(DataBroker.class);
  67         LOG.info("NetvirtProvider: onSessionInitiated dataBroker: {}", dataBroker);
  68         LOG.info("NetvirtProvider: onSessionInitiated isConntrackEnabled: {}", this.conntrackEnabled);
  69         this.activator = new ConfigActivator(providerContext);
  70         activator.setConntrackEnabled(this.conntrackEnabled);
  71         try {
  72             activator.start(bundleContext);
  73         } catch (Exception e) {
  74             LOG.warn("Failed to start Netvirt: ", e);
  75         }
  76     }
  77
  78     public boolean isConntrackEnabled() {
  79         return conntrackEnabled;
  80     }
  81
  82     public void setConntrackEnabled(boolean conntackEnabled) {
  83         this.conntrackEnabled = conntackEnabled;
  84     }
  85 }