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