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 javax.annotation.Nonnull;
  16
  17 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  20 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  21 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  22 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  23 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  24 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OFOverlayRenderer;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.SubjectFeatureDefinitions;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinition;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.Renderers;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.Renderer;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.RendererKey;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.Capabilities;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedActionDefinition;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedActionDefinitionBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedActionDefinitionKey;
  34 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  35 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 import com.google.common.util.concurrent.FutureCallback;
  40 import com.google.common.util.concurrent.Futures;
  41 import com.google.common.util.concurrent.MoreExecutors;
  42
  43 public class ActionDefinitionListener implements ClusteredDataTreeChangeListener<ActionDefinition>, AutoCloseable {
  44
  45     private static final Logger LOG = LoggerFactory.getLogger(ActionDefinitionListener.class);
  46     private static final InstanceIdentifier<Capabilities> CAPABILITIES_IID = InstanceIdentifier.builder(Renderers.class)
  47         .child(Renderer.class, new RendererKey(OFOverlayRenderer.RENDERER_NAME))
  48         .child(Capabilities.class)
  49         .build();
  50     private static final String PUT = "stored";
  51     private static final String DELETED = "removed";
  52
  53     private final DataBroker dataProvider;
  54     private final ListenerRegistration<ActionDefinitionListener> registration;
  55
  56     public ActionDefinitionListener(DataBroker dataProvider) {
  57         this.dataProvider = checkNotNull(dataProvider);
  58         registration = dataProvider
  59             .registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  60                     InstanceIdentifier.builder(SubjectFeatureDefinitions.class).child(ActionDefinition.class).build()),
  61                     this);
  62     }
  63
  64     @Override
  65     public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<ActionDefinition>> changes) {
  66         for (DataTreeModification<ActionDefinition> change : changes) {
  67             DataObjectModification<ActionDefinition> rootNode = change.getRootNode();
  68
  69             switch (rootNode.getModificationType()) {
  70                 case WRITE:
  71                 case SUBTREE_MODIFIED:
  72                     ActionDefinition actionDefinitionAfter = checkNotNull(rootNode.getDataAfter());
  73                     Action ourAction = SubjectFeatures.getAction(actionDefinitionAfter.getId());
  74                     if (ourAction != null) {
  75                         SupportedActionDefinition supportedActionDefinition =
  76                                 createSupportedActionDefinition(ourAction);
  77                         WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
  78                         wTx.put(LogicalDatastoreType.OPERATIONAL, CAPABILITIES_IID
  79                             .child(SupportedActionDefinition.class, supportedActionDefinition.getKey()),
  80                                 supportedActionDefinition, true);
  81                         Futures.addCallback(wTx.submit(), logDebugResult(supportedActionDefinition.getKey(), PUT), MoreExecutors
  82                             .directExecutor());
  83                     }
  84                     break;
  85
  86                 case DELETE:
  87                     ActionDefinition actionDefinitionBefore = checkNotNull(rootNode.getDataBefore());
  88                     ourAction = SubjectFeatures.getAction(actionDefinitionBefore.getId());
  89                     if (ourAction != null) {
  90                         SupportedActionDefinitionKey supportedActionDefinitionKey =
  91                                 new SupportedActionDefinitionKey(ourAction.getId());
  92                         WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
  93                         wTx.delete(LogicalDatastoreType.OPERATIONAL,
  94                                 CAPABILITIES_IID.child(SupportedActionDefinition.class, supportedActionDefinitionKey));
  95                         Futures.addCallback(wTx.submit(), logDebugResult(supportedActionDefinitionKey, DELETED), MoreExecutors.directExecutor());
  96                     }
  97                     break;
  98             }
  99
 100         }
 101     }
 102
 103     private SupportedActionDefinition createSupportedActionDefinition(Action action) {
 104         return new SupportedActionDefinitionBuilder().setActionDefinitionId(action.getId())
 105             .setSupportedParameterValues(action.getSupportedParameterValues())
 106             .build();
 107     }
 108
 109     private FutureCallback<Void> logDebugResult(final SupportedActionDefinitionKey supportedActionDefinitionKey,
 110             final String putOrDeleted) {
 111         return new FutureCallback<Void>() {
 112
 113             @Override
 114             public void onSuccess(Void result) {
 115                 LOG.debug("Capability of renerer {} was {}: {}", OFOverlayRenderer.RENDERER_NAME.getValue(),
 116                         putOrDeleted, supportedActionDefinitionKey);
 117             }
 118
 119             @Override
 120             public void onFailure(@Nonnull Throwable t) {
 121                 LOG.error("Capability of renderer {} was NOT {}: {}", OFOverlayRenderer.RENDERER_NAME.getValue(),
 122                         putOrDeleted, supportedActionDefinitionKey, t);
 123             }
 124         };
 125     }
 126
 127     @Override
 128     public void close() throws Exception {
 129         if (registration != null)
 130             registration.close();
 131     }
 132 }