renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/sf/ActionDefinitionListener.java

   1 /*
   2  * Copyright (c) 2015 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.sf;
  10
  11 import static com.google.common.base.Preconditions.checkNotNull;
  12
  13 import java.util.Collection;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  18 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  19 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  20 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OFOverlayRenderer;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.SubjectFeatureDefinitions;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinition;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.Renderers;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.Renderer;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.RendererKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.Capabilities;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedActionDefinition;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedActionDefinitionBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedActionDefinitionKey;
  32 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 import com.google.common.util.concurrent.FutureCallback;
  38 import com.google.common.util.concurrent.Futures;
  39
  40 public class ActionDefinitionListener implements ClusteredDataTreeChangeListener<ActionDefinition>, AutoCloseable {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(ActionDefinitionListener.class);
  43     private static final InstanceIdentifier<Capabilities> CAPABILITIES_IID = InstanceIdentifier.builder(Renderers.class)
  44         .child(Renderer.class, new RendererKey(OFOverlayRenderer.RENDERER_NAME))
  45         .child(Capabilities.class)
  46         .build();
  47     private static String PUT = "stored";
  48     private static String DELETED = "removed";
  49
  50     private final DataBroker dataProvider;
  51     private final ListenerRegistration<ActionDefinitionListener> registration;
  52
  53     public ActionDefinitionListener(DataBroker dataProvider) {
  54         this.dataProvider = checkNotNull(dataProvider);
  55         registration = dataProvider
  56             .registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  57                     InstanceIdentifier.builder(SubjectFeatureDefinitions.class).child(ActionDefinition.class).build()),
  58                     this);
  59     }
  60
  61     @Override
  62     public void onDataTreeChanged(Collection<DataTreeModification<ActionDefinition>> changes) {
  63         for (DataTreeModification<ActionDefinition> change : changes) {
  64             DataObjectModification<ActionDefinition> rootNode = change.getRootNode();
  65
  66             switch (rootNode.getModificationType()) {
  67                 case WRITE:
  68                 case SUBTREE_MODIFIED:
  69                     ActionDefinition actionDefinitionAfter = checkNotNull(rootNode.getDataAfter());
  70                     Action ourAction = SubjectFeatures.getAction(actionDefinitionAfter.getId());
  71                     if (ourAction != null) {
  72                         SupportedActionDefinition supportedActionDefinition =
  73                                 createSupportedActionDefinition(ourAction);
  74                         WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
  75                         wTx.put(LogicalDatastoreType.OPERATIONAL, CAPABILITIES_IID
  76                             .child(SupportedActionDefinition.class, supportedActionDefinition.getKey()),
  77                                 supportedActionDefinition, true);
  78                         Futures.addCallback(wTx.submit(), logDebugResult(supportedActionDefinition.getKey(), PUT));
  79                     }
  80                     break;
  81
  82                 case DELETE:
  83                     ActionDefinition actionDefinitionBefore = checkNotNull(rootNode.getDataBefore());
  84                     ourAction = SubjectFeatures.getAction(actionDefinitionBefore.getId());
  85                     if (ourAction != null) {
  86                         SupportedActionDefinitionKey supportedActionDefinitionKey =
  87                                 new SupportedActionDefinitionKey(ourAction.getId());
  88                         WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
  89                         wTx.delete(LogicalDatastoreType.OPERATIONAL,
  90                                 CAPABILITIES_IID.child(SupportedActionDefinition.class, supportedActionDefinitionKey));
  91                         Futures.addCallback(wTx.submit(), logDebugResult(supportedActionDefinitionKey, DELETED));
  92                     }
  93                     break;
  94             }
  95
  96         }
  97     }
  98
  99     private SupportedActionDefinition createSupportedActionDefinition(Action action) {
 100         return new SupportedActionDefinitionBuilder().setActionDefinitionId(action.getId())
 101             .setSupportedParameterValues(action.getSupportedParameterValues())
 102             .build();
 103     }
 104
 105     private FutureCallback<Void> logDebugResult(final SupportedActionDefinitionKey supportedActionDefinitionKey,
 106             final String putOrDeleted) {
 107         return new FutureCallback<Void>() {
 108
 109             @Override
 110             public void onSuccess(Void result) {
 111                 LOG.debug("Capability of renerer {} was {}: {}", OFOverlayRenderer.RENDERER_NAME.getValue(),
 112                         putOrDeleted, supportedActionDefinitionKey);
 113             }
 114
 115             @Override
 116             public void onFailure(Throwable t) {
 117                 LOG.error("Capability of renderer {} was NOT {}: {}", OFOverlayRenderer.RENDERER_NAME.getValue(),
 118                         putOrDeleted, supportedActionDefinitionKey, t);
 119             }
 120         };
 121     }
 122
 123     @Override
 124     public void close() throws Exception {
 125         if (registration != null)
 126             registration.close();
 127     }
 128 }