opendaylight/md-sal/forwardingrules-manager/src/main/java/org/opendaylight/controller/frm/meter/MeterProvider.java

   1 /**
   2  * Copyright (c) 2014 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 package org.opendaylight.controller.frm.meter;
   9
  10 import org.opendaylight.controller.sal.binding.api.data.DataChangeListener;
  11 import org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction;
  12 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.Meter;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.service.rev130918.SalMeterService;
  18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  19 import org.opendaylight.yangtools.yang.binding.DataObject;
  20 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public class MeterProvider implements AutoCloseable {
  26
  27     private final static Logger LOG = LoggerFactory.getLogger(MeterProvider.class);
  28
  29     private DataProviderService dataService;
  30     private SalMeterService salMeterService;
  31
  32     /* DataChangeListener */
  33     private MeterChangeListener meterDataChangeListener;
  34     ListenerRegistration<DataChangeListener> meterDataChangeListenerRegistration;
  35
  36     public void start() {
  37         /* Build Path */
  38         InstanceIdentifierBuilder<Nodes> nodesBuilder = InstanceIdentifier.<Nodes> builder(Nodes.class);
  39         InstanceIdentifierBuilder<Node> nodeChild = nodesBuilder.<Node> child(Node.class);
  40         InstanceIdentifierBuilder<FlowCapableNode> augmentFlowCapNode = nodeChild.<FlowCapableNode> augmentation(FlowCapableNode.class);
  41         InstanceIdentifierBuilder<Meter> meterChild = augmentFlowCapNode.<Meter> child(Meter.class);
  42         final InstanceIdentifier<? extends DataObject> meterDataObjectPath = meterChild.toInstance();
  43
  44         /* DataChangeListener registration */
  45         this.meterDataChangeListener = new MeterChangeListener(this.salMeterService);
  46         this.meterDataChangeListenerRegistration = this.dataService.registerDataChangeListener(meterDataObjectPath, meterDataChangeListener);
  47         LOG.info("Meter Config Provider started.");
  48     }
  49
  50     protected DataModificationTransaction startChange() {
  51         return this.dataService.beginTransaction();
  52     }
  53
  54     public void close() throws Exception {
  55         if(meterDataChangeListenerRegistration != null){
  56             meterDataChangeListenerRegistration.close();
  57         }
  58     }
  59
  60     public void setDataService(final DataProviderService dataService) {
  61         this.dataService = dataService;
  62     }
  63
  64     public void setSalMeterService(final SalMeterService salMeterService) {
  65         this.salMeterService = salMeterService;
  66     }
  67 }