neutron-logger/src/main/java/org/opendaylight/neutron/logger/NeutronLogger.java

   1 /*
   2  * Copyright (c) 2016 Intel Corporation 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.neutron.logger;
  10
  11 import com.google.common.base.Preconditions;
  12
  13 import java.util.Collection;
  14 import javax.annotation.Nonnull;
  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.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.yang.binding.DataObject;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class NeutronLogger implements AutoCloseable {
  29     private static final Logger LOG = LoggerFactory.getLogger(NeutronLogger.class);
  30
  31     private DataBroker db;
  32     private ClusteredDataTreeChangeListener<Neutron> configurationDataTreeChangeListener;
  33     private ListenerRegistration<? extends ClusteredDataTreeChangeListener<Neutron>> configurationRegisteredListener;
  34     private ClusteredDataTreeChangeListener<Neutron> operationalDataTreeChangeListener;
  35     private ListenerRegistration<? extends ClusteredDataTreeChangeListener<Neutron>> operationalRegisteredListener;
  36
  37     public NeutronLogger(@Nonnull DataBroker db) {
  38         LOG.info("Creating NeutronLogger {}", db);
  39         this.db = Preconditions.checkNotNull(db, "null db");
  40     }
  41
  42     private <T extends DataObject>
  43         void formatModification(@Nonnull final StringBuilder messageBuilder,
  44                                 @Nonnull final DataObjectModification<T> objectModification) {
  45         final String typeName = objectModification.getDataType().getSimpleName();
  46
  47         switch (objectModification.getModificationType()) {
  48             case SUBTREE_MODIFIED:
  49                 for (final DataObjectModification<? extends DataObject> child :
  50                              objectModification.getModifiedChildren()) {
  51                     formatModification(messageBuilder, child);
  52                 }
  53                 break;
  54             case WRITE:
  55                 messageBuilder.append("\n");
  56                 messageBuilder.append("WRITE: type: ").append(typeName).append("\n");
  57                 final T dataAfter = objectModification.getDataAfter();
  58                 messageBuilder.append(dataAfter.toString());
  59                 break;
  60             case DELETE:
  61                 messageBuilder.append("\n");
  62                 messageBuilder.append("DELETE: ").append(typeName);
  63                 break;
  64             default:
  65                 LOG.warn("unknown modification type: {}", typeName);
  66                 break;
  67         }
  68     }
  69
  70     private <T extends DataObject>
  71         void formatChanges(@Nonnull final StringBuilder messageBuilder,
  72                            @Nonnull final Collection<DataTreeModification<T>> changes) {
  73         for (DataTreeModification<T> modification : changes) {
  74             final DataTreeIdentifier<T> identifier = modification.getRootPath();
  75             final LogicalDatastoreType datastoreType = identifier.getDatastoreType();
  76             if (datastoreType == LogicalDatastoreType.OPERATIONAL) {
  77                 messageBuilder.append("OPERATIONAL: ");
  78             } else {
  79                 messageBuilder.append("CONFIGURATION: ");
  80             }
  81
  82             final DataObjectModification<T> objectModification = modification.getRootNode();
  83             formatModification(messageBuilder, objectModification);
  84         }
  85     }
  86
  87     private void logChanges(String prefix, @Nonnull Collection<DataTreeModification<Neutron>> changes) {
  88         final StringBuilder messageBuilder = new StringBuilder();
  89         messageBuilder.append(prefix);
  90         formatChanges(messageBuilder, changes);
  91         LOG.info(messageBuilder.toString());
  92     }
  93
  94     private void configurationDataTreeChanged(@Nonnull Collection<DataTreeModification<Neutron>> changes) {
  95         logChanges("Configuration DataTreeChanged ", changes);
  96     }
  97
  98     private void operationalDataTreeChanged(@Nonnull Collection<DataTreeModification<Neutron>> changes) {
  99         logChanges("Operational DataTreeChanged ", changes);
 100     }
 101
 102     public void init() {
 103         LOG.info("Register listener for Neutron model data changes");
 104         InstanceIdentifier<Neutron> instanceId = Preconditions.checkNotNull(InstanceIdentifier.create(Neutron.class));
 105
 106         DataTreeIdentifier<Neutron> configurationDataTreeId =
 107             new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION, instanceId);
 108         configurationDataTreeChangeListener = new ClusteredDataTreeChangeListener<Neutron>() {
 109             @Override
 110             public void onDataTreeChanged(Collection<DataTreeModification<Neutron>> changes) {
 111                 configurationDataTreeChanged(changes);
 112             }
 113         };
 114         configurationRegisteredListener = db.registerDataTreeChangeListener(configurationDataTreeId,
 115                                                                             configurationDataTreeChangeListener);
 116
 117         DataTreeIdentifier<Neutron> operationalDataTreeId =
 118             new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL, instanceId);
 119         operationalDataTreeChangeListener = new ClusteredDataTreeChangeListener<Neutron>() {
 120             @Override
 121             public void onDataTreeChanged(Collection<DataTreeModification<Neutron>> changes) {
 122                 operationalDataTreeChanged(changes);
 123             }
 124         };
 125         operationalRegisteredListener = db.registerDataTreeChangeListener(operationalDataTreeId,
 126                                                                           operationalDataTreeChangeListener);
 127     }
 128
 129     @Override
 130     public void close() throws Exception {
 131         configurationRegisteredListener.close();
 132         configurationRegisteredListener = null;
 133         operationalRegisteredListener.close();
 134         operationalRegisteredListener = null;
 135     }
 136 }