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 import com.google.common.util.concurrent.MoreExecutors;
  36
  37 public class ClassifierDefinitionListener extends DataTreeChangeHandler<ClassifierDefinition> {
  38
  39     private static final Logger LOG = LoggerFactory.getLogger(ClassifierDefinitionListener.class);
  40
  41     private static final String PUT = "stored";
  42     private static final String DELETED = "removed";
  43
  44     private static final InstanceIdentifier<Capabilities> CAPABILITIES_IID = InstanceIdentifier.builder(Renderers.class)
  45         .child(Renderer.class, new RendererKey(IovisorRenderer.RENDERER_NAME))
  46         .child(Capabilities.class)
  47         .build();
  48
  49     public ClassifierDefinitionListener(DataBroker dataBroker) {
  50         super(dataBroker);
  51         registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  52                 InstanceIdentifier.builder(SubjectFeatureDefinitions.class).child(ClassifierDefinition.class).build()));
  53     }
  54
  55     private SupportedClassifierDefinition createSupportedClassifierDefinition(Classifier classifier) {
  56         SupportedClassifierDefinitionBuilder scdBuilder =
  57                 new SupportedClassifierDefinitionBuilder().setClassifierDefinitionId(classifier.getId())
  58                     .setSupportedParameterValues(classifier.getSupportedParameterValues());
  59         if (classifier.getParent() != null) {
  60             scdBuilder.setParentClassifierDefinitionId(classifier.getParent().getId());
  61         }
  62         return scdBuilder.build();
  63     }
  64
  65     private FutureCallback<Void> logDebugResult(final SupportedClassifierDefinitionKey supportedClassifierDefinitionKey,
  66             final String putOrDeleted) {
  67         return new FutureCallback<Void>() {
  68
  69             @Override
  70             public void onSuccess(Void result) {
  71                 LOG.debug("Capability of renerer {} was {}: {}", IovisorRenderer.RENDERER_NAME.getValue(), putOrDeleted,
  72                         supportedClassifierDefinitionKey.getClassifierDefinitionId().getValue());
  73             }
  74
  75             @Override
  76             public void onFailure(Throwable t) {
  77                 LOG.error("Capability of renderer {} was NOT {}: {}", IovisorRenderer.RENDERER_NAME.getValue(),
  78                         putOrDeleted, supportedClassifierDefinitionKey.getClassifierDefinitionId().getValue(), t);
  79             }
  80         };
  81     }
  82
  83     @Override
  84     protected void onWrite(DataObjectModification<ClassifierDefinition> rootNode,
  85             InstanceIdentifier<ClassifierDefinition> rootIdentifier) {
  86         onSubtreeModified(rootNode, rootIdentifier);
  87     }
  88
  89     @Override
  90     protected void onDelete(DataObjectModification<ClassifierDefinition> rootNode,
  91             InstanceIdentifier<ClassifierDefinition> rootIdentifier) {
  92         ClassifierDefinition classifierDefinitionBefore = checkNotNull(rootNode.getDataBefore());
  93         Classifier ourClassifier = SubjectFeatures.getClassifier(classifierDefinitionBefore.getId());
  94         if (ourClassifier != null) {
  95             SupportedClassifierDefinitionKey supportedClassifierDefinitionKey =
  96                     new SupportedClassifierDefinitionKey(ourClassifier.getId());
  97             WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
  98
  99             wTx.delete(LogicalDatastoreType.OPERATIONAL,
 100                     CAPABILITIES_IID.child(SupportedClassifierDefinition.class, supportedClassifierDefinitionKey));
 101             Futures.addCallback(wTx.submit(), logDebugResult(supportedClassifierDefinitionKey, DELETED), MoreExecutors.directExecutor());
 102         }
 103     }
 104
 105     @Override
 106     protected void onSubtreeModified(DataObjectModification<ClassifierDefinition> rootNode,
 107             InstanceIdentifier<ClassifierDefinition> rootIdentifier) {
 108         ClassifierDefinition classifierDefinitionAfter = checkNotNull(rootNode.getDataAfter());
 109         Classifier ourClassifier = SubjectFeatures.getClassifier(classifierDefinitionAfter.getId());
 110         if (ourClassifier != null) {
 111             SupportedClassifierDefinition supportedClassifierDefinition =
 112                     createSupportedClassifierDefinition(ourClassifier);
 113             WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
 114             wTx.put(LogicalDatastoreType.OPERATIONAL,
 115                     CAPABILITIES_IID.child(SupportedClassifierDefinition.class, supportedClassifierDefinition.getKey()),
 116                     supportedClassifierDefinition, true);
 117             Futures.addCallback(wTx.submit(), logDebugResult(supportedClassifierDefinition.getKey(), PUT), MoreExecutors.directExecutor());
 118         }
 119     }
 120 }