renderers/iovisor/src/main/java/org/opendaylight/groupbasedpolicy/renderer/iovisor/sf/ClassifierDefinitionListener.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.iovisor.sf;
  10
  11 import static com.google.common.base.Preconditions.checkNotNull;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  15 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  16 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.groupbasedpolicy.renderer.iovisor.IovisorRenderer;
  19 import org.opendaylight.groupbasedpolicy.util.DataTreeChangeHandler;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.SubjectFeatureDefinitions;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ClassifierDefinition;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.Renderers;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.Renderer;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.RendererKey;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.Capabilities;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedClassifierDefinition;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedClassifierDefinitionBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.SupportedClassifierDefinitionKey;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 import com.google.common.util.concurrent.FutureCallback;
  34 import com.google.common.util.concurrent.Futures;
  35
  36 public class ClassifierDefinitionListener extends DataTreeChangeHandler<ClassifierDefinition> {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(ClassifierDefinitionListener.class);
  39
  40     private static final String PUT = "stored";
  41     private static final String DELETED = "removed";
  42
  43     private static final InstanceIdentifier<Capabilities> CAPABILITIES_IID = InstanceIdentifier.builder(Renderers.class)
  44         .child(Renderer.class, new RendererKey(IovisorRenderer.RENDERER_NAME))
  45         .child(Capabilities.class)
  46         .build();
  47
  48     public ClassifierDefinitionListener(DataBroker dataBroker) {
  49         super(dataBroker);
  50         registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  51                 InstanceIdentifier.builder(SubjectFeatureDefinitions.class).child(ClassifierDefinition.class).build()));
  52     }
  53
  54     private SupportedClassifierDefinition createSupportedClassifierDefinition(Classifier classifier) {
  55         SupportedClassifierDefinitionBuilder scdBuilder =
  56                 new SupportedClassifierDefinitionBuilder().setClassifierDefinitionId(classifier.getId())
  57                     .setSupportedParameterValues(classifier.getSupportedParameterValues());
  58         if (classifier.getParent() != null) {
  59             scdBuilder.setParentClassifierDefinitionId(classifier.getParent().getId());
  60         }
  61         return scdBuilder.build();
  62     }
  63
  64     private FutureCallback<Void> logDebugResult(final SupportedClassifierDefinitionKey supportedClassifierDefinitionKey,
  65             final String putOrDeleted) {
  66         return new FutureCallback<Void>() {
  67
  68             @Override
  69             public void onSuccess(Void result) {
  70                 LOG.debug("Capability of renerer {} was {}: {}", IovisorRenderer.RENDERER_NAME.getValue(), putOrDeleted,
  71                         supportedClassifierDefinitionKey.getClassifierDefinitionId().getValue());
  72             }
  73
  74             @Override
  75             public void onFailure(Throwable t) {
  76                 LOG.error("Capability of renderer {} was NOT {}: {}", IovisorRenderer.RENDERER_NAME.getValue(),
  77                         putOrDeleted, supportedClassifierDefinitionKey.getClassifierDefinitionId().getValue(), t);
  78             }
  79         };
  80     }
  81
  82     @Override
  83     protected void onWrite(DataObjectModification<ClassifierDefinition> rootNode,
  84             InstanceIdentifier<ClassifierDefinition> rootIdentifier) {
  85         onSubtreeModified(rootNode, rootIdentifier);
  86     }
  87
  88     @Override
  89     protected void onDelete(DataObjectModification<ClassifierDefinition> rootNode,
  90             InstanceIdentifier<ClassifierDefinition> rootIdentifier) {
  91         ClassifierDefinition classifierDefinitionBefore = checkNotNull(rootNode.getDataBefore());
  92         Classifier ourClassifier = SubjectFeatures.getClassifier(classifierDefinitionBefore.getId());
  93         if (ourClassifier != null) {
  94             SupportedClassifierDefinitionKey supportedClassifierDefinitionKey =
  95                     new SupportedClassifierDefinitionKey(ourClassifier.getId());
  96             WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
  97
  98             wTx.delete(LogicalDatastoreType.OPERATIONAL,
  99                     CAPABILITIES_IID.child(SupportedClassifierDefinition.class, supportedClassifierDefinitionKey));
 100             Futures.addCallback(wTx.submit(), logDebugResult(supportedClassifierDefinitionKey, DELETED));
 101         }
 102     }
 103
 104     @Override
 105     protected void onSubtreeModified(DataObjectModification<ClassifierDefinition> rootNode,
 106             InstanceIdentifier<ClassifierDefinition> rootIdentifier) {
 107         ClassifierDefinition classifierDefinitionAfter = checkNotNull(rootNode.getDataAfter());
 108         Classifier ourClassifier = SubjectFeatures.getClassifier(classifierDefinitionAfter.getId());
 109         if (ourClassifier != null) {
 110             SupportedClassifierDefinition supportedClassifierDefinition =
 111                     createSupportedClassifierDefinition(ourClassifier);
 112             WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
 113             wTx.put(LogicalDatastoreType.OPERATIONAL,
 114                     CAPABILITIES_IID.child(SupportedClassifierDefinition.class, supportedClassifierDefinition.getKey()),
 115                     supportedClassifierDefinition, true);
 116             Futures.addCallback(wTx.submit(), logDebugResult(supportedClassifierDefinition.getKey(), PUT));
 117         }
 118     }
 119 }