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.rev130715.Uuid;
  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 Uuid ID = new Uuid("934cd993-7bcc-46cf-b150-64fabc92b4e0");
  45     private final DataBroker dataBroker;
  46     private final PolicyResolver policyResolver;
  47     private final SwitchManager switchManager;
  48     private final EndpointManager endpointManager;
  49     private final PolicyManager policyManager;
  50
  51     private final ScheduledExecutorService executor;
  52
  53     private static final InstanceIdentifier<OfOverlayConfig> configIid =
  54             InstanceIdentifier.builder(OfOverlayConfig.class).build();
  55
  56     private OfOverlayConfig config;
  57     ListenerRegistration<DataChangeListener> configReg;
  58
  59     public OFOverlayRenderer(DataBroker dataProvider,
  60                              RpcProviderRegistry rpcRegistry) {
  61         super();
  62         this.dataBroker = dataProvider;
  63
  64         int numCPU = Runtime.getRuntime().availableProcessors();
  65         //TODO: Consider moving to groupbasedpolicy-ofoverlay-config so as to be user configurable in distribution.
  66         executor = Executors.newScheduledThreadPool(numCPU * 2);
  67
  68         switchManager = new SwitchManager(dataProvider);
  69         endpointManager = new EndpointManager(dataProvider, rpcRegistry,
  70                                               executor, switchManager);
  71         policyResolver = new PolicyResolver(dataProvider, executor);
  72
  73         policyManager = new PolicyManager(dataProvider,
  74                                           policyResolver,
  75                                           switchManager,
  76                                           endpointManager,
  77                                           rpcRegistry,
  78                                           executor);
  79
  80         configReg =
  81                 dataProvider.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  82                                                         configIid,
  83                                                         this,
  84                                                         DataChangeScope.SUBTREE);
  85         readConfig();
  86         LOG.info("Initialized OFOverlay renderer");
  87
  88     }
  89
  90     // *************
  91     // AutoCloseable
  92     // *************
  93
  94     @Override
  95     public void close() throws Exception {
  96         executor.shutdownNow();
  97         if (configReg != null) configReg.close();
  98         if (policyResolver != null) policyResolver.close();
  99         if (switchManager != null) switchManager.close();
 100         if (endpointManager != null) endpointManager.close();
 101     }
 102
 103     // ******************
 104     // DataChangeListener
 105     // ******************
 106
 107     @Override
 108     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>,
 109                                                    DataObject> change) {
 110         readConfig();
 111     }
 112
 113     // **************
 114     // Implementation
 115     // **************
 116
 117     private void readConfig() {
 118         ListenableFuture<Optional<OfOverlayConfig>> dao =
 119                 dataBroker.newReadOnlyTransaction()
 120                     .read(LogicalDatastoreType.CONFIGURATION, configIid);
 121         Futures.addCallback(dao, new FutureCallback<Optional<OfOverlayConfig>>() {
 122             @Override
 123             public void onSuccess(final Optional<OfOverlayConfig> result) {
 124                 if (!result.isPresent()) return;
 125                 if (result.get() instanceof OfOverlayConfig) {
 126                     config = result.get();
 127                     applyConfig();
 128                 }
 129             }
 130
 131             @Override
 132             public void onFailure(Throwable t) {
 133                 LOG.error("Failed to read configuration", t);
 134             }
 135         }, executor);
 136     }
 137
 138     private void applyConfig() {
 139         switchManager.setEncapsulationFormat(config.getEncapsulationFormat());
 140         endpointManager.setLearningMode(config.getLearningMode());
 141         policyManager.setLearningMode(config.getLearningMode());
 142     }
 143 }