2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.controller.frm.meter;
10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
11 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
12 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
14 import org.opendaylight.controller.sal.binding.api.RpcConsumerRegistry;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.Meter;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.service.rev130918.SalMeterService;
20 import org.opendaylight.yangtools.concepts.ListenerRegistration;
21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
25 import com.google.common.base.Preconditions;
28 * Meter Provider registers the {@link MeterChangeListener} and it holds all needed
29 * services for {@link MeterChangeListener}.
31 * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
34 public class MeterProvider implements AutoCloseable {
36 private static final Logger LOG = LoggerFactory.getLogger(MeterProvider.class);
38 private SalMeterService salMeterService;
39 private DataBroker dataService;
41 /* DataChangeListener */
42 private DataChangeListener meterDataChangeListener;
43 private ListenerRegistration<DataChangeListener> meterDataChangeListenerRegistration;
46 * Provider Initialization Phase.
48 * @param DataProviderService dataService
50 public void init(final DataBroker dataService) {
51 LOG.info("FRM Meter Config Provider initialization.");
52 this.dataService = Preconditions.checkNotNull(dataService, "DataProviderService can not be null !");
56 * Listener Registration Phase
58 * @param RpcConsumerRegistry rpcRegistry
60 public void start(final RpcConsumerRegistry rpcRegistry) {
61 Preconditions.checkArgument(rpcRegistry != null, "RpcConsumerRegistry can not be null !");
62 this.salMeterService = Preconditions.checkNotNull(rpcRegistry.getRpcService(SalMeterService.class),
63 "RPC SalMeterService not found.");
66 InstanceIdentifier<Meter> meterIdentifier = InstanceIdentifier.create(Nodes.class)
67 .child(Node.class).augmentation(FlowCapableNode.class).child(Meter.class);
69 /* DataChangeListener registration */
70 this.meterDataChangeListener = new MeterChangeListener(MeterProvider.this);
71 this.meterDataChangeListenerRegistration =
72 this.dataService.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
73 meterIdentifier, meterDataChangeListener, DataChangeScope.SUBTREE);
75 LOG.info("FRM Meter Config Provider started.");
80 LOG.info("FRM Meter Config Provider stopped.");
81 if (meterDataChangeListenerRegistration != null) {
83 meterDataChangeListenerRegistration.close();
84 } catch (Exception e) {
85 String errMsg = "Error by stop FRM Meter Config Provider.";
87 throw new IllegalStateException(errMsg, e);
89 meterDataChangeListenerRegistration = null;
94 public DataChangeListener getMeterDataChangeListener() {
95 return meterDataChangeListener;
98 public DataBroker getDataService() {
102 public SalMeterService getSalMeterService() {
103 return salMeterService;