opendaylight/md-sal/forwardingrules-manager/src/main/java/org/opendaylight/controller/frm/reconil/FlowNodeReconcilProvider.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
   9 package org.opendaylight.controller.frm.reconil;
  10
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  13 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.controller.sal.binding.api.RpcConsumerRegistry;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SalFlowService;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.SalGroupService;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.service.rev130918.SalMeterService;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import com.google.common.base.Preconditions;
  28
  29 /**
  30  * forwardingrules-manager
  31  * org.opendaylight.controller.frm
  32  *
  33  * FlowNode Reconciliation Provider registers the FlowNodeReconilListener
  34  * and it holds all needed services for FlowNodeReconcilListener.
  35  *
  36  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  37  *
  38  * Created: Jun 13, 2014
  39  */
  40 public class FlowNodeReconcilProvider implements AutoCloseable {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(FlowNodeReconcilProvider.class);
  43
  44     private SalFlowService salFlowService;
  45     private SalMeterService salMeterService;
  46     private SalGroupService salGroupService;
  47     private DataBroker dataService;
  48
  49     /* DataChangeListener */
  50     private DataChangeListener flowNodeReconcilListener;
  51     private ListenerRegistration<DataChangeListener> flowNodeReconcilListenerRegistration;
  52
  53     public void init (final DataBroker dataService) {
  54         LOG.info("FRM Flow Node Config Reconcil Provider initialization.");
  55
  56         this.dataService = Preconditions.checkNotNull(dataService, "DataProviderService can not be null !");
  57     }
  58
  59     public void start( final RpcConsumerRegistry rpcRegistry ) {
  60         Preconditions.checkArgument(rpcRegistry != null, "RpcConcumerRegistry can not be null !");
  61
  62         this.salFlowService = Preconditions.checkNotNull(rpcRegistry.getRpcService(SalFlowService.class),
  63                 "RPC SalFlowService not found.");
  64         this.salMeterService = Preconditions.checkNotNull(rpcRegistry.getRpcService(SalMeterService.class),
  65                 "RPC SalMeterService not found.");
  66         this.salGroupService = Preconditions.checkNotNull(rpcRegistry.getRpcService(SalGroupService.class),
  67                 "RPC SalGroupService not found.");
  68
  69         /* Build Path */
  70         InstanceIdentifier<FlowCapableNode> flowCapableNodeIdent =
  71                 InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class);
  72
  73         /* ReconcilNotificationListener registration */
  74         this.flowNodeReconcilListener = new FlowNodeReconcilListener(FlowNodeReconcilProvider.this);
  75         this.flowNodeReconcilListenerRegistration = this.dataService.registerDataChangeListener(
  76                 LogicalDatastoreType.OPERATIONAL, flowCapableNodeIdent, flowNodeReconcilListener, DataChangeScope.BASE);
  77         LOG.info("FRM Flow Node Config Reconcil Provider started.");
  78     }
  79
  80     @Override
  81     public void close() {
  82         LOG.info("FRM Flow Node Config Reconcil Provider stopped.");
  83         if (flowNodeReconcilListenerRegistration != null) {
  84             try {
  85                 flowNodeReconcilListenerRegistration.close();
  86             } catch (Exception e) {
  87                 String errMsg = "Error by stop FRM Flow Node Config Reconcil Provider.";
  88                 LOG.error(errMsg, e);
  89                 throw new IllegalStateException(errMsg, e);
  90             } finally {
  91                 flowNodeReconcilListenerRegistration = null;
  92             }
  93         }
  94     }
  95
  96     public DataChangeListener getFlowNodeReconcilListener() {
  97         return flowNodeReconcilListener;
  98     }
  99
 100     public DataBroker getDataService() {
 101         return dataService;
 102     }
 103
 104     public SalFlowService getSalFlowService() {
 105         return salFlowService;
 106     }
 107
 108     public SalMeterService getSalMeterService() {
 109         return salMeterService;
 110     }
 111
 112     public SalGroupService getSalGroupService() {
 113         return salGroupService;
 114     }
 115 }