openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/impl/ProviderNetworkManagerImpl.java

   1 /*
   2  * Copyright (C) 2013 Red Hat, Inc.
   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  * Authors : Madhu Venugopal, Brent Salisbury, Dave Tucker
   9  */
  10 package org.opendaylight.ovsdb.openstack.netvirt.impl;
  11
  12 import java.util.HashMap;
  13 import java.util.Map;
  14
  15 import org.opendaylight.ovsdb.openstack.netvirt.api.Constants;
  16 import org.opendaylight.ovsdb.openstack.netvirt.api.NetworkingProvider;
  17 import org.opendaylight.ovsdb.openstack.netvirt.api.NetworkingProviderManager;
  18 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  19 import org.osgi.framework.ServiceReference;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 import com.google.common.base.Predicate;
  24 import com.google.common.collect.Iterables;
  25 import com.google.common.collect.Maps;
  26
  27 public class ProviderNetworkManagerImpl implements NetworkingProviderManager {
  28
  29     static final Logger logger = LoggerFactory.getLogger(ProviderNetworkManagerImpl.class);
  30     private HashMap<Long, ProviderEntry> providers = Maps.newHashMap();
  31     private HashMap<Node, NetworkingProvider> nodeToProviderMapping = Maps.newHashMap();
  32
  33     @Override
  34     public NetworkingProvider getProvider(Node node) {
  35         if (nodeToProviderMapping.get(node) != null) {
  36             return nodeToProviderMapping.get(node);
  37         }
  38
  39         final String targetVersion = Constants.OPENFLOW13;
  40         Predicate<ProviderEntry> providerEntryPredicate = new Predicate<ProviderEntry>() {
  41             @Override
  42             public boolean apply(ProviderEntry providerEntry) {
  43                 //ToDo: This should match on southboundProtocol and providerType too
  44                 return providerEntry.getProperties().get(Constants.OPENFLOW_VERSION_PROPERTY).equals(targetVersion);
  45             }
  46         };
  47
  48         Iterable<ProviderEntry> matchingProviders = Iterables.filter(providers.values(), providerEntryPredicate);
  49         if (!matchingProviders.iterator().hasNext()) {
  50             logger.error("No providers matching {} found", targetVersion);
  51         }
  52
  53         // Return the first match as only have one matching provider today
  54         // ToDo: Tie-breaking logic
  55         NetworkingProvider provider = matchingProviders.iterator().next().getProvider();
  56         nodeToProviderMapping.put(node, provider);
  57         return provider;
  58     }
  59
  60     public void providerAdded(final ServiceReference ref, final NetworkingProvider provider){
  61         Map <String, String> properties = Maps.newHashMap();
  62         Long pid = (Long) ref.getProperty(org.osgi.framework.Constants.SERVICE_ID);
  63         properties.put(Constants.SOUTHBOUND_PROTOCOL_PROPERTY, (String) ref.getProperty(Constants.SOUTHBOUND_PROTOCOL_PROPERTY));
  64         properties.put(Constants.OPENFLOW_VERSION_PROPERTY, (String) ref.getProperty(Constants.OPENFLOW_VERSION_PROPERTY));
  65         properties.put(Constants.PROVIDER_TYPE_PROPERTY, (String) ref.getProperty(Constants.PROVIDER_TYPE_PROPERTY));
  66         providers.put(pid, new ProviderEntry(provider, properties));
  67         logger.info("Neutron Networking Provider Registered: {}, with {} and pid={}", provider.getClass().getName(), properties.toString(), pid);
  68     }
  69
  70     public void providerRemoved(final ServiceReference ref){
  71         Long pid = (Long)ref.getProperty(org.osgi.framework.Constants.SERVICE_ID);
  72         providers.remove(pid);
  73         logger.info("Neutron Networking Provider Removed: {}", pid);
  74     }
  75
  76     private class ProviderEntry {
  77         NetworkingProvider provider;
  78         Map<String, String> properties;
  79
  80         ProviderEntry(NetworkingProvider provider, Map<String, String> properties) {
  81             this.provider = provider;
  82             this.properties = properties;
  83         }
  84
  85         public NetworkingProvider getProvider() {
  86             return provider;
  87         }
  88
  89         public Map<String, String> getProperties() {
  90             return properties;
  91         }
  92     }
  93
  94 }