renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/OFOverlayRenderer.java

   1 /*
   2  * Copyright (c) 2014 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.renderer.ofoverlay;
  10
  11 import java.util.concurrent.Executors;
  12 import java.util.concurrent.ScheduledExecutorService;
  13
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  17 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
  20 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.node.SwitchManager;
  21 import org.opendaylight.groupbasedpolicy.resolver.PolicyResolver;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayConfig;
  24 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  25 import org.opendaylight.yangtools.yang.binding.DataObject;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import com.google.common.base.Optional;
  31 import com.google.common.util.concurrent.FutureCallback;
  32 import com.google.common.util.concurrent.Futures;
  33 import com.google.common.util.concurrent.ListenableFuture;
  34
  35 /**
  36  * Renderer that uses OpenFlow and OVSDB to implement an overlay network
  37  * using Open vSwitch.
  38
  39  */
  40 public class OFOverlayRenderer implements AutoCloseable, DataChangeListener {
  41     private static final Logger LOG =
  42             LoggerFactory.getLogger(OFOverlayRenderer.class);
  43
  44     private final DataBroker dataBroker;
  45     private final PolicyResolver policyResolver;
  46     private final SwitchManager switchManager;
  47     private final EndpointManager endpointManager;
  48     private final PolicyManager policyManager;
  49
  50     private final short tableOffset;
  51     private final MacAddress externalRouterMac;
  52
  53     private final ScheduledExecutorService executor;
  54
  55     private static final InstanceIdentifier<OfOverlayConfig> configIid =
  56             InstanceIdentifier.builder(OfOverlayConfig.class).build();
  57
  58     private OfOverlayConfig config;
  59     ListenerRegistration<DataChangeListener> configReg;
  60
  61     public OFOverlayRenderer(DataBroker dataProvider,
  62                              RpcProviderRegistry rpcRegistry,
  63                              short tableOffset,
  64                              MacAddress externalRouterMac) {
  65         super();
  66         this.dataBroker = dataProvider;
  67         this.tableOffset=tableOffset;
  68         this.externalRouterMac=externalRouterMac;
  69
  70         int numCPU = Runtime.getRuntime().availableProcessors();
  71         //TODO: Consider moving to groupbasedpolicy-ofoverlay-config so as to be user configurable in distribution.
  72         executor = Executors.newScheduledThreadPool(numCPU * 2);
  73
  74         switchManager = new SwitchManager(dataProvider);
  75         endpointManager = new EndpointManager(dataProvider, rpcRegistry,
  76                                               executor, switchManager);
  77         policyResolver = new PolicyResolver(dataProvider, executor);
  78
  79         policyManager = new PolicyManager(dataProvider,
  80                                           policyResolver,
  81                                           switchManager,
  82                                           endpointManager,
  83                                           rpcRegistry,
  84                                           executor,
  85                                           tableOffset,
  86                                           externalRouterMac);
  87
  88         configReg =
  89                 dataProvider.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  90                                                         configIid,
  91                                                         this,
  92                                                         DataChangeScope.SUBTREE);
  93         readConfig();
  94         LOG.info("Initialized OFOverlay renderer");
  95
  96     }
  97
  98     // *************
  99     // AutoCloseable
 100     // *************
 101
 102     @Override
 103     public void close() throws Exception {
 104         executor.shutdownNow();
 105         if (configReg != null) configReg.close();
 106         if (policyResolver != null) policyResolver.close();
 107         if (switchManager != null) switchManager.close();
 108         if (endpointManager != null) endpointManager.close();
 109     }
 110
 111     // ******************
 112     // DataChangeListener
 113     // ******************
 114
 115     @Override
 116     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>,
 117                                                    DataObject> change) {
 118         readConfig();
 119     }
 120
 121     // **************
 122     // Implementation
 123     // **************
 124
 125     private void readConfig() {
 126         ListenableFuture<Optional<OfOverlayConfig>> dao =
 127                 dataBroker.newReadOnlyTransaction()
 128                     .read(LogicalDatastoreType.CONFIGURATION, configIid);
 129         Futures.addCallback(dao, new FutureCallback<Optional<OfOverlayConfig>>() {
 130             @Override
 131             public void onSuccess(final Optional<OfOverlayConfig> result) {
 132                 if (!result.isPresent()) return;
 133                 if (result.get() instanceof OfOverlayConfig) {
 134                     config = result.get();
 135                     applyConfig();
 136                 }
 137             }
 138
 139             @Override
 140             public void onFailure(Throwable t) {
 141                 LOG.error("Failed to read configuration", t);
 142             }
 143         }, executor);
 144     }
 145
 146     private void applyConfig() {
 147         switchManager.setEncapsulationFormat(config.getEncapsulationFormat());
 148         endpointManager.setLearningMode(config.getLearningMode());
 149         policyManager.setLearningMode(config.getLearningMode());
 150     }
 151 }