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 org.opendaylight.controller.sal.core.Node;
  13 import org.opendaylight.ovsdb.openstack.netvirt.api.ConfigurationService;
  14 import org.opendaylight.ovsdb.openstack.netvirt.api.Constants;
  15 import org.opendaylight.ovsdb.openstack.netvirt.api.NetworkingProvider;
  16 import org.opendaylight.ovsdb.openstack.netvirt.api.NetworkingProviderManager;
  17
  18 import com.google.common.base.Preconditions;
  19 import com.google.common.base.Predicate;
  20 import com.google.common.collect.Iterables;
  21 import com.google.common.collect.Maps;
  22 import org.osgi.framework.ServiceReference;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import java.util.HashMap;
  27 import java.util.Map;
  28
  29 public class ProviderNetworkManagerImpl implements NetworkingProviderManager {
  30
  31     static final Logger logger = LoggerFactory.getLogger(ProviderNetworkManagerImpl.class);
  32     // The provider for each of these services is resolved by the OSGi Service Manager
  33     private volatile ConfigurationService configurationService;
  34
  35     private HashMap<Long, ProviderEntry> providers = Maps.newHashMap();
  36     private HashMap<Node, NetworkingProvider> nodeToProviderMapping = Maps.newHashMap();
  37
  38     public NetworkingProvider getProvider(Node node) {
  39         // This will change if/when we move to a commons library
  40         Preconditions.checkArgument(node.getType().equals("OVS"));
  41
  42         if (nodeToProviderMapping.get(node) != null) {
  43             return nodeToProviderMapping.get(node);
  44         }
  45
  46         final String targetVersion = configurationService.getOpenflowVersion(node);
  47
  48         Predicate<ProviderEntry> providerEntryPredicate = new Predicate<ProviderEntry>() {
  49             @Override
  50             public boolean apply(ProviderEntry providerEntry) {
  51                 //ToDo: This should match on southboundProtocol and providerType too
  52                 return providerEntry.getProperties().get(Constants.OPENFLOW_VERSION_PROPERTY).equals(targetVersion);
  53             }
  54         };
  55
  56         Iterable<ProviderEntry> matchingProviders = Iterables.filter(providers.values(), providerEntryPredicate);
  57         if (!matchingProviders.iterator().hasNext()) {
  58             logger.error("No providers matching {} found", targetVersion);
  59         }
  60
  61         // Return the first match as only have one matching provider today
  62         // ToDo: Tie-breaking logic
  63         NetworkingProvider provider = matchingProviders.iterator().next().getProvider();
  64         nodeToProviderMapping.put(node, provider);
  65         return provider;
  66     }
  67
  68     public void providerAdded(final ServiceReference ref, final NetworkingProvider provider){
  69         Map <String, String> properties = Maps.newHashMap();
  70         Long pid = (Long) ref.getProperty(org.osgi.framework.Constants.SERVICE_ID);
  71         properties.put(Constants.SOUTHBOUND_PROTOCOL_PROPERTY, (String) ref.getProperty(Constants.SOUTHBOUND_PROTOCOL_PROPERTY));
  72         properties.put(Constants.OPENFLOW_VERSION_PROPERTY, (String) ref.getProperty(Constants.OPENFLOW_VERSION_PROPERTY));
  73         properties.put(Constants.PROVIDER_TYPE_PROPERTY, (String) ref.getProperty(Constants.PROVIDER_TYPE_PROPERTY));
  74         providers.put(pid, new ProviderEntry(provider, properties));
  75         logger.info("Neutron Networking Provider Registered: {}, with {} and pid={}", provider.getClass().getName(), properties.toString(), pid);
  76     }
  77
  78     public void providerRemoved(final ServiceReference ref){
  79         Long pid = (Long)ref.getProperty(org.osgi.framework.Constants.SERVICE_ID);
  80         providers.remove(pid);
  81         logger.info("Neutron Networking Provider Removed: {}", pid);
  82     }
  83
  84     private class ProviderEntry {
  85         NetworkingProvider provider;
  86         Map<String, String> properties;
  87
  88         ProviderEntry(NetworkingProvider provider, Map<String, String> properties) {
  89             this.provider = provider;
  90             this.properties = properties;
  91         }
  92
  93         public NetworkingProvider getProvider() {
  94             return provider;
  95         }
  96
  97         public Map<String, String> getProperties() {
  98             return properties;
  99         }
 100     }
 101
 102 }