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.resolver.PolicyResolver;
  21 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.SfcManager;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayConfig;
  23 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  24 import org.opendaylight.yangtools.yang.binding.DataObject;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 import com.google.common.base.Optional;
  30 import com.google.common.util.concurrent.FutureCallback;
  31 import com.google.common.util.concurrent.Futures;
  32 import com.google.common.util.concurrent.ListenableFuture;
  33
  34 /**
  35  * Renderer that uses OpenFlow and OVSDB to implement an overlay network
  36  * using Open vSwitch.
  37  * @author readams
  38  */
  39 public class OFOverlayRenderer implements AutoCloseable, DataChangeListener {
  40     private static final Logger LOG =
  41             LoggerFactory.getLogger(OFOverlayRenderer.class);
  42
  43     private final DataBroker dataBroker;
  44     private final PolicyResolver policyResolver;
  45     private final SwitchManager switchManager;
  46     private final EndpointManager endpointManager;
  47     private final PolicyManager policyManager;
  48     private final SfcManager sfcManager;
  49
  50     private final ScheduledExecutorService executor;
  51
  52     private static final InstanceIdentifier<OfOverlayConfig> configIid =
  53             InstanceIdentifier.builder(OfOverlayConfig.class).build();
  54
  55     private OfOverlayConfig config;
  56     ListenerRegistration<DataChangeListener> configReg;
  57
  58     public OFOverlayRenderer(DataBroker dataProvider,
  59                              RpcProviderRegistry rpcRegistry) {
  60         super();
  61         this.dataBroker = dataProvider;
  62
  63         int numCPU = Runtime.getRuntime().availableProcessors();
  64         //TODO: Consider moving to groupbasedpolicy-ofoverlay-config so as to be user configurable in distribution.
  65         executor = Executors.newScheduledThreadPool(numCPU * 2);
  66
  67         switchManager = new SwitchManager(dataProvider, executor);
  68         endpointManager = new EndpointManager(dataProvider, rpcRegistry,
  69                                               executor, switchManager);
  70         policyResolver = new PolicyResolver(dataProvider, executor);
  71
  72         policyManager = new PolicyManager(dataProvider,
  73                                           policyResolver,
  74                                           switchManager,
  75                                           endpointManager,
  76                                           rpcRegistry,
  77                                           executor);
  78         // TODO Move SfcManager out out ofoverlay renderer -- should be something
  79         //       that's shared by renderers, not specific to ofoverlay
  80         sfcManager = new SfcManager(dataProvider,
  81                                     policyResolver,
  82                                     rpcRegistry,
  83                                     executor);
  84
  85
  86         configReg =
  87                 dataProvider.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  88                                                         configIid,
  89                                                         this,
  90                                                         DataChangeScope.SUBTREE);
  91         readConfig();
  92         LOG.info("Initialized OFOverlay renderer");
  93
  94     }
  95
  96     // *************
  97     // AutoCloseable
  98     // *************
  99
 100     @Override
 101     public void close() throws Exception {
 102         executor.shutdownNow();
 103         if (configReg != null) configReg.close();
 104         if (policyResolver != null) policyResolver.close();
 105         if (switchManager != null) switchManager.close();
 106         if (endpointManager != null) endpointManager.close();
 107         if (sfcManager != null) sfcManager.close();
 108     }
 109
 110     // ******************
 111     // DataChangeListener
 112     // ******************
 113
 114     @Override
 115     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>,
 116                                                    DataObject> change) {
 117         readConfig();
 118     }
 119
 120     // **************
 121     // Implementation
 122     // **************
 123
 124     private void readConfig() {
 125         ListenableFuture<Optional<OfOverlayConfig>> dao =
 126                 dataBroker.newReadOnlyTransaction()
 127                     .read(LogicalDatastoreType.CONFIGURATION, configIid);
 128         Futures.addCallback(dao, new FutureCallback<Optional<OfOverlayConfig>>() {
 129             @Override
 130             public void onSuccess(final Optional<OfOverlayConfig> result) {
 131                 if (!result.isPresent()) return;
 132                 if (result.get() instanceof OfOverlayConfig) {
 133                     config = (OfOverlayConfig)result.get();
 134                     applyConfig();
 135                 }
 136             }
 137
 138             @Override
 139             public void onFailure(Throwable t) {
 140                 LOG.error("Failed to read configuration", t);
 141             }
 142         }, executor);
 143     }
 144
 145     private void applyConfig() {
 146         switchManager.setEncapsulationFormat(config.getEncapsulationFormat());
 147         endpointManager.setLearningMode(config.getLearningMode());
 148         policyManager.setLearningMode(config.getLearningMode());
 149     }
 150 }