Merge "Bug 762: Fix sal-rest-connector unit tests"
[controller.git] / opendaylight / md-sal / compatibility / sal-compatibility / src / main / java / org / opendaylight / controller / sal / compatibility / InventoryAndReadAdapter.xtend
index 609ace469556e1101389bd17677796b159dde8a6..8908504f15171ebe2018ee5feb4915fe199b67a6 100644 (file)
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
 package org.opendaylight.controller.sal.compatibility
 
-import org.opendaylight.controller.sal.reader.IPluginInReadService
-import org.opendaylight.controller.sal.core.NodeConnector
+import java.util.ArrayList
+import java.util.Collections
+import java.util.List
+import java.util.Map
+import java.util.Set
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.CopyOnWriteArrayList
+import java.util.concurrent.locks.Lock
+import java.util.concurrent.locks.ReentrantLock
+import org.opendaylight.controller.md.sal.binding.util.TypeSafeDataReader
+import org.opendaylight.controller.sal.binding.api.data.DataBrokerService
+import org.opendaylight.controller.sal.binding.api.data.DataProviderService
+import org.opendaylight.controller.sal.core.Edge
 import org.opendaylight.controller.sal.core.Node
-import org.opendaylight.controller.sal.flowprogrammer.Flow
 import org.opendaylight.controller.sal.core.NodeTable
-import org.opendaylight.controller.sal.binding.api.data.DataBrokerService
-
-import static extension org.opendaylight.controller.sal.common.util.Arguments.*
-import static extension org.opendaylight.controller.sal.compatibility.NodeMapping.*
-import static org.opendaylight.controller.sal.compatibility.MDFlowMapping.*
+import org.opendaylight.controller.sal.core.UpdateType
+import org.opendaylight.controller.sal.flowprogrammer.Flow
+import org.opendaylight.controller.sal.inventory.IPluginInInventoryService
+import org.opendaylight.controller.sal.inventory.IPluginOutInventoryService
+import org.opendaylight.controller.sal.reader.FlowOnNode
+import org.opendaylight.controller.sal.reader.IPluginInReadService
+import org.opendaylight.controller.sal.reader.IPluginOutReadService
+import org.opendaylight.controller.sal.reader.NodeConnectorStatistics
+import org.opendaylight.controller.sal.reader.NodeDescription
+import org.opendaylight.controller.sal.reader.NodeTableStatistics
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.AggregateFlowStatisticsUpdate
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowStatisticsData
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAllFlowsStatisticsFromAllFlowTablesInputBuilder
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetFlowStatisticsFromFlowTableInputBuilder
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.OpendaylightFlowStatisticsListener
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.OpendaylightFlowStatisticsService
-import org.opendaylight.controller.sal.reader.NodeConnectorStatistics
-import org.opendaylight.controller.sal.reader.FlowOnNode
-import org.opendaylight.controller.sal.reader.NodeDescription
-import org.slf4j.LoggerFactory
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAllFlowStatisticsInputBuilder
-import java.util.ArrayList
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAllNodeConnectorStatisticsInputBuilder
-import org.opendaylight.controller.sal.inventory.IPluginInInventoryService
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.OpendaylightInventoryListener
-import org.opendaylight.controller.sal.inventory.IPluginOutInventoryService
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapList
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsData
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsUpdate
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.GetFlowTablesStatisticsInputBuilder
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.OpendaylightFlowTableStatisticsListener
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.OpendaylightFlowTableStatisticsService
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.statistics.FlowTableStatistics
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.FlowTopologyDiscoveryService
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.Link
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRemoved
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorUpdated
-import java.util.Collections
-import org.opendaylight.controller.sal.core.UpdateType
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRemoved
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeUpdated
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.OpendaylightInventoryListener
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.FlowCapableNodeConnectorStatistics
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.FlowCapableNodeConnectorStatisticsData
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.GetAllNodeConnectorsStatisticsInputBuilder
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.GetNodeConnectorStatisticsInputBuilder
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.NodeConnectorStatisticsUpdate
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.OpendaylightPortStatisticsListener
+import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.OpendaylightPortStatisticsService
 import org.opendaylight.yangtools.yang.binding.DataObject
-import org.opendaylight.controller.sal.topology.IPluginOutTopologyService
-import org.opendaylight.controller.sal.topology.IPluginInTopologyService
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.FlowTopologyDiscoveryService
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.FlowTopologyDiscoveryListener
-import org.opendaylight.controller.sal.core.Edge
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.Link
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscovered
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkOverutilized
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkRemoved
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkUtilizationNormal
-import org.opendaylight.controller.sal.topology.TopoEdgeUpdate
-import org.opendaylight.controller.sal.discovery.IDiscoveryService
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier
+import org.slf4j.LoggerFactory
+
+import static extension org.opendaylight.controller.sal.common.util.Arguments.*
+import static extension org.opendaylight.controller.sal.compatibility.NodeMapping.*
 
-class InventoryAndReadAdapter implements IPluginInTopologyService, IPluginInReadService, IPluginInInventoryService, OpendaylightInventoryListener, FlowTopologyDiscoveryListener {
+class InventoryAndReadAdapter implements IPluginInReadService,
+                                             IPluginInInventoryService,
+                                             OpendaylightInventoryListener,
+                                             OpendaylightFlowStatisticsListener,
+                                             OpendaylightFlowTableStatisticsListener,
+                                             OpendaylightPortStatisticsListener {
 
     private static val LOG = LoggerFactory.getLogger(InventoryAndReadAdapter);
 
+    private static val OPENFLOWV10_TABLE_ID = new Integer(0).shortValue;
     @Property
     DataBrokerService dataService;
 
     @Property
-    OpendaylightFlowStatisticsService flowStatisticsService;
+    DataProviderService dataProviderService;
 
     @Property
-    IPluginOutInventoryService inventoryPublisher;
+    OpendaylightFlowStatisticsService flowStatisticsService;
 
     @Property
-    IPluginOutTopologyService topologyPublisher;
+    OpendaylightPortStatisticsService nodeConnectorStatisticsService;
     
     @Property
-    IDiscoveryService discoveryPublisher;
+    OpendaylightFlowTableStatisticsService flowTableStatisticsService;
 
     @Property
     FlowTopologyDiscoveryService topologyDiscovery;
+    
+    @Property
+    List<IPluginOutReadService> statisticsPublisher = new CopyOnWriteArrayList<IPluginOutReadService>();
+
+    @Property
+    List<IPluginOutInventoryService> inventoryPublisher = new CopyOnWriteArrayList<IPluginOutInventoryService>();
+
+    private final InventoryNotificationProvider inventoryNotificationProvider = new InventoryNotificationProvider();
+
+    private final Map<InstanceIdentifier.PathArgument, List<InstanceIdentifier.PathArgument>> nodeToNodeConnectorsMap = new ConcurrentHashMap<InstanceIdentifier.PathArgument, List<InstanceIdentifier.PathArgument>>();
+
+    private final Lock nodeToNodeConnectorsLock = new ReentrantLock();
+
+
+    def startAdapter(){
+        inventoryNotificationProvider.dataProviderService = dataProviderService;
+        inventoryNotificationProvider.inventoryPublisher = inventoryPublisher;
+        // inventoryNotificationProvider.start();
+    }
+
+    def start(){
+    }
+
+    def setInventoryPublisher(IPluginOutInventoryService listener){
+        inventoryPublisher.add(listener);
+    }
+
+    def unsetInventoryPublisher(IPluginOutInventoryService listener){
+        inventoryPublisher.remove(listener);
+    }
+
+    def setReadPublisher(IPluginOutReadService listener) {
+        statisticsPublisher.add(listener);
+    }
+    
+    def unsetReadPublisher (IPluginOutReadService listener) {
+        if( listener != null)
+            statisticsPublisher.remove(listener);
+    }
 
-    override getTransmitRate(NodeConnector connector) {
+    protected def startChange() {
+        return dataProviderService.beginTransaction;
+    }
+
+    override getTransmitRate(org.opendaylight.controller.sal.core.NodeConnector connector) {
         val nodeConnector = readFlowCapableNodeConnector(connector.toNodeConnectorRef);
         return nodeConnector.currentSpeed
     }
 
     override readAllFlow(Node node, boolean cached) {
-        val input = new GetAllFlowStatisticsInputBuilder;
-        input.setNode(node.toNodeRef);
-        val result = flowStatisticsService.getAllFlowStatistics(input.build)
 
-        val statistics = result.get.result;
         val output = new ArrayList<FlowOnNode>();
-        for (stat : statistics.flowStatistics) {
-            // FIXME: Create FlowOnNode
+        val tableRef = InstanceIdentifier.builder(Nodes)
+                                        .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node, InventoryMapping.toNodeKey(node))
+                                        .augmentation(FlowCapableNode).child(Table, new TableKey(OPENFLOWV10_TABLE_ID)).toInstance();
+        
+        val it = this.startChange();
+        
+        val table= it.readConfigurationData(tableRef) as Table;
+        
+        if(table != null){
+            LOG.trace("Number of flows installed in table 0 of node {} : {}",node,table.flow.size);
+            
+            for(flow : table.flow){
+                
+                val adsalFlow = ToSalConversionsUtils.toFlow(flow,node);
+                val statsFromDataStore = flow.getAugmentation(FlowStatisticsData);
+                
+                if(statsFromDataStore != null){
+                    val it = new FlowOnNode(adsalFlow);
+                    byteCount =  statsFromDataStore.flowStatistics.byteCount.value.longValue;
+                    packetCount = statsFromDataStore.flowStatistics.packetCount.value.longValue;
+                    durationSeconds = statsFromDataStore.flowStatistics.duration.second.value.intValue;
+                    durationNanoseconds = statsFromDataStore.flowStatistics.duration.nanosecond.value.intValue;
+                    
+                    output.add(it);
+                }
+            }
         }
+        
+        //TODO (main): Shell we send request to the switch? It will make async request to the switch.
+        // Once plugin receive response, it will let adaptor know through onFlowStatisticsUpdate()
+        // If we assume that md-sal statistics manager will always be running, then its not required
+        // But if not, then sending request will collect the latest data for adaptor atleast.
+        val input = new GetAllFlowsStatisticsFromAllFlowTablesInputBuilder;
+        input.setNode(node.toNodeRef);
+        flowStatisticsService.getAllFlowsStatisticsFromAllFlowTables(input.build)
+        
         return output;
     }
 
     override readAllNodeConnector(Node node, boolean cached) {
-        val input = new GetAllNodeConnectorStatisticsInputBuilder();
-        input.setNode(node.toNodeRef);
-        val result = flowStatisticsService.getAllNodeConnectorStatistics(input.build());
-        val statistics = result.get.result.nodeConnectorStatistics;
+        
         val ret = new ArrayList<NodeConnectorStatistics>();
-        for (stat : statistics) {
-            ret.add(stat.toNodeConnectorStatistics())
-        }
+        val nodeRef = InstanceIdentifier.builder(Nodes)
+                                    .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node, InventoryMapping.toNodeKey(node))
+                                    .toInstance();
+        
+        val provider = this.startChange();
+        
+        val dsNode= provider.readConfigurationData(nodeRef) as org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
+        
+         if(dsNode != null){
+             
+             for (dsNodeConnector : dsNode.nodeConnector){
+                val nodeConnectorRef = InstanceIdentifier.builder(Nodes)
+                                    .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node, InventoryMapping.toNodeKey(node))
+                                    .child(NodeConnector, dsNodeConnector.key)
+                                    .toInstance();
+                 
+                 val nodeConnectorFromDS = provider.readConfigurationData(nodeConnectorRef) as NodeConnector;
+                 
+                 if(nodeConnectorFromDS != null){
+                     val nodeConnectorStatsFromDs = nodeConnectorFromDS.getAugmentation(FlowCapableNodeConnectorStatisticsData) as FlowCapableNodeConnectorStatistics;
+                     
+                    ret.add(toNodeConnectorStatistics(nodeConnectorStatsFromDs.flowCapableNodeConnectorStatistics,dsNode.id,dsNodeConnector.id));
+                 }
+             }
+         }
+
+        //TODO: Refer TODO (main)
+        val input = new GetAllNodeConnectorsStatisticsInputBuilder();
+        input.setNode(node.toNodeRef);
+        nodeConnectorStatisticsService.getAllNodeConnectorsStatistics(input.build());
         return ret;
     }
 
     override readAllNodeTable(Node node, boolean cached) {
-        throw new UnsupportedOperationException("TODO: auto-generated method stub")
+        val ret = new ArrayList<NodeTableStatistics>();
+        
+        val dsFlowCapableNode= readFlowCapableNode(node.toNodeRef)
+        
+         if(dsFlowCapableNode != null){
+             
+             for (table : dsFlowCapableNode.table){
+                 
+                 val tableStats = table.getAugmentation(FlowTableStatisticsData);
+                 
+                 if(tableStats != null){
+                     ret.add(toNodeTableStatistics(tableStats.flowTableStatistics,table.id,node));
+                 }
+             }
+         }
+
+        //TODO: Refer TODO (main)
+        val input = new GetFlowTablesStatisticsInputBuilder();
+        input.setNode(node.toNodeRef);
+        flowTableStatisticsService.getFlowTablesStatistics(input.build);
+        return ret;
     }
 
     override readDescription(Node node, boolean cached) {
-        val capableNode = readFlowCapableNode(node.toNodeRef)
-
-        val it = new NodeDescription()
-        manufacturer = capableNode.manufacturer
-        serialNumber = capableNode.serialNumber
-        software = capableNode.software
-        description = capableNode.description
-
-        return it;
+        return toNodeDescription(node.toNodeRef);
     }
 
-    override readFlow(Node node, Flow flow, boolean cached) {
-        val input = flowStatisticsInput(node, flow);
-        val output = flowStatisticsService.getFlowStatistics(input);
-
-        try {
-            val statistics = output.get().getResult();
-            if (statistics != null) {
-                val it = new FlowOnNode(flow);
-                byteCount = statistics.byteCount.value.longValue
-                durationNanoseconds = statistics.duration.getNanosecond().getValue().intValue();
-                durationSeconds = statistics.duration.getSecond().getValue().intValue();
-                packetCount = statistics.getPacketCount().getValue().longValue();
-                return it;
+    override readFlow(Node node, Flow targetFlow, boolean cached) {
+        var FlowOnNode ret= null;
+        
+        val tableRef = InstanceIdentifier.builder(Nodes)
+                                        .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node, InventoryMapping.toNodeKey(node))
+                                        .augmentation(FlowCapableNode).child(Table, new TableKey(OPENFLOWV10_TABLE_ID)).toInstance();
+        
+        val it = this.startChange();
+        
+        val table= it.readConfigurationData(tableRef) as Table;
+        
+        if(table != null){
+            LOG.trace("Number of flows installed in table 0 of node {} : {}",node,table.flow.size);
+            
+            for(mdsalFlow : table.flow){
+                if(FromSalConversionsUtils.flowEquals(mdsalFlow, MDFlowMapping.toMDSalflow(targetFlow))){
+                    val statsFromDataStore = mdsalFlow.getAugmentation(FlowStatisticsData);
+                    
+                    if(statsFromDataStore != null){
+                        LOG.debug("Found matching flow in the data store flow table ");
+                        val it = new FlowOnNode(targetFlow);
+                        byteCount =  statsFromDataStore.flowStatistics.byteCount.value.longValue;
+                        packetCount = statsFromDataStore.flowStatistics.packetCount.value.longValue;
+                        durationSeconds = statsFromDataStore.flowStatistics.duration.second.value.intValue;
+                        durationNanoseconds = statsFromDataStore.flowStatistics.duration.nanosecond.value.intValue;
+                        
+                        ret = it;
+                    }
+                }            
             }
-        } catch (Exception e) {
-            LOG.error("Read flow not processed", e);
         }
-        return null;
+        
+        //TODO: Refer TODO (main)
+        val input = new GetFlowStatisticsFromFlowTableInputBuilder;
+        input.setNode(node.toNodeRef);
+        input.fieldsFrom(MDFlowMapping.toMDSalflow(targetFlow));
+        flowStatisticsService.getFlowStatisticsFromFlowTable(input.build)
+        
+        return ret;
+        
     }
 
-    override readNodeConnector(NodeConnector connector, boolean cached) {
+    override readNodeConnector(org.opendaylight.controller.sal.core.NodeConnector connector, boolean cached) {
+        var NodeConnectorStatistics  nodeConnectorStatistics = null;
+    
+        val nodeConnectorRef = InstanceIdentifier.builder(Nodes)
+                                    .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node, InventoryMapping.toNodeKey(connector.node))
+                                    .child(NodeConnector, InventoryMapping.toNodeConnectorKey(connector))
+                                    .toInstance();
+         val provider = this.startChange();
+                 
+         val nodeConnectorFromDS = provider.readConfigurationData(nodeConnectorRef) as NodeConnector;
+                 
+         if(nodeConnectorFromDS != null){
+            val nodeConnectorStatsFromDs = nodeConnectorFromDS.getAugmentation(FlowCapableNodeConnectorStatisticsData) as FlowCapableNodeConnectorStatistics;
+            if(nodeConnectorStatsFromDs != null) {
+                nodeConnectorStatistics = toNodeConnectorStatistics(nodeConnectorStatsFromDs.flowCapableNodeConnectorStatistics,
+                                                                        InventoryMapping.toNodeKey(connector.node).id,
+                                                                        InventoryMapping.toNodeConnectorKey(connector).id);
+            }
+        }
 
-        val getNodeConnectorStatisticsInput = FromSalConversionsUtils.nodeConnectorStatistics(connector);
-        val future = flowStatisticsService.getNodeConnectorStatistics(getNodeConnectorStatisticsInput);
-        try {
-            val rpcResult = future.get();
-            val output = rpcResult.getResult();
+        //TODO: Refer TODO (main)
+        val input = new GetNodeConnectorStatisticsInputBuilder();
+        input.setNode(connector.node.toNodeRef);
+        input.setNodeConnectorId(InventoryMapping.toNodeConnectorKey(connector).id);
+        nodeConnectorStatisticsService.getNodeConnectorStatistics(input.build());
+        return nodeConnectorStatistics;
+    }
 
-            if (output != null) {
-                return output.toNodeConnectorStatistics;
+    override readNodeTable(NodeTable nodeTable, boolean cached) {
+        var NodeTableStatistics nodeStats = null
+        
+        val tableRef = InstanceIdentifier.builder(Nodes)
+                                        .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node, InventoryMapping.toNodeKey(nodeTable.node))
+                                        .augmentation(FlowCapableNode).child(Table, new TableKey(nodeTable.ID as Short)).toInstance();
+        
+        val it = this.startChange();
+        
+        val table= it.readConfigurationData(tableRef) as Table;
+        
+        if(table != null){
+            val tableStats = table.getAugmentation(FlowTableStatisticsData);
+                 
+             if(tableStats != null){
+                 nodeStats =  toNodeTableStatistics(tableStats.flowTableStatistics,table.id,nodeTable.node);
             }
-        } catch (Exception e) {
-            LOG.error("Read node connector not processed", e);
         }
 
-        return null;
+        //TODO: Refer TODO (main)
+        val input = new GetFlowTablesStatisticsInputBuilder();
+        input.setNode(nodeTable.node.toNodeRef);
+        flowTableStatisticsService.getFlowTablesStatistics(input.build);
+        
+        return nodeStats;
     }
 
     override onNodeConnectorRemoved(NodeConnectorRemoved update) {
-        // NOOP
+        // Never received
     }
 
     override onNodeRemoved(NodeRemoved notification) {
         val properties = Collections.<org.opendaylight.controller.sal.core.Property>emptySet();
-        val org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> identifier = notification.nodeRef.value  as org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject>;
 
-        inventoryPublisher.updateNode(notification.nodeRef.toADNode, UpdateType.REMOVED, properties);
+        removeNodeConnectors(notification.nodeRef.value);
+
+        publishNodeUpdate(notification.nodeRef.toADNode, UpdateType.REMOVED, properties);
     }
 
     override onNodeConnectorUpdated(NodeConnectorUpdated update) {
-        val properties = new java.util.HashSet<org.opendaylight.controller.sal.core.Property>();
-
-
-        val org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> identifier = update.nodeConnectorRef.value as org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject>;
         var updateType = UpdateType.CHANGED;
-        if ( this._dataService.readOperationalData(identifier) == null ){
+        if(!isKnownNodeConnector(update.nodeConnectorRef.value)){
             updateType = UpdateType.ADDED;
+            recordNodeConnector(update.nodeConnectorRef.value);
         }
 
         var nodeConnector = update.nodeConnectorRef.toADNodeConnector
 
-
-        properties.add(new org.opendaylight.controller.sal.core.Name(nodeConnector.ID.toString()));
-
-        inventoryPublisher.updateNodeConnector(nodeConnector , updateType , properties);
+        publishNodeConnectorUpdate(nodeConnector , updateType , update.toADNodeConnectorProperties);
     }
 
     override onNodeUpdated(NodeUpdated notification) {
-        val properties = Collections.<org.opendaylight.controller.sal.core.Property>emptySet();
-        val org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> identifier = notification.nodeRef.value  as org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject>;
+        val InstanceIdentifier<? extends DataObject> identifier = notification.nodeRef.value  as InstanceIdentifier<? extends DataObject>;
 
         var updateType = UpdateType.CHANGED;
         if ( this._dataService.readOperationalData(identifier) == null ){
             updateType = UpdateType.ADDED;
         }
-        inventoryPublisher.updateNode(notification.nodeRef.toADNode, updateType, properties);
-    }
+        publishNodeUpdate(notification.nodeRef.toADNode, updateType, notification.toADNodeProperties);
 
-    override getNodeProps() {
+        //Notify the listeners of IPluginOutReadService
 
-        // FIXME: Read from MD-SAL inventory service
-        return null;
+        for (statsPublisher : statisticsPublisher){
+            val nodeRef = InstanceIdentifier.builder(Nodes).child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node,new NodeKey(notification.id)).toInstance;
+            val description = notification.nodeRef.toNodeDescription
+            if(description != null) {
+              statsPublisher.descriptionStatisticsUpdated(nodeRef.toADNode,description);
+            }
+        }
     }
 
-    override getNodeConnectorProps(Boolean refresh) {
-
-        // FIXME: Read from MD-SAL Invcentory Service
-        return null;
+    override getNodeProps() {
+        val props = new ConcurrentHashMap<Node, Map<String, org.opendaylight.controller.sal.core.Property>>()
+        
+        val nodes = readAllMDNodes()
+        for (node : nodes.node ) {
+            val fcn = node.getAugmentation(FlowCapableNode)
+            if(fcn != null) {
+                val perNodeProps = fcn.toADNodeProperties(node.id)
+                val perNodePropMap = new ConcurrentHashMap<String, org.opendaylight.controller.sal.core.Property>
+                if(perNodeProps != null ) {
+                    for(perNodeProp : perNodeProps) {
+                        perNodePropMap.put(perNodeProp.name,perNodeProp)
+                    }
+                }
+                props.put(new Node(MD_SAL_TYPE, node.id.toADNodeId),perNodePropMap)
+            }
+        }
+        return props;
+    }
+    
+    private def readAllMDNodes() {
+        val nodesRef = InstanceIdentifier.builder(Nodes)
+            .toInstance
+        val reader = TypeSafeDataReader.forReader(dataService)
+        return reader.readOperationalData(nodesRef)
+    }
+    
+    private def readAllMDNodeConnectors(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node node) {
+        val nodeRef = InstanceIdentifier.builder(Nodes)
+            .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node,new NodeKey(node.id))
+            .toInstance
+        val reader = TypeSafeDataReader.forReader(dataService)
+        return reader.readOperationalData(nodeRef).nodeConnector
     }
 
-    override readNodeTable(NodeTable table, boolean cached) {
-        throw new UnsupportedOperationException("TODO: auto-generated method stub")
+    override getNodeConnectorProps(Boolean refresh) {
+        // Note, because the MD-SAL has a unified data store, we can ignore the Boolean refresh, as we have no secondary 
+        // data store to refresh from
+        val props = new ConcurrentHashMap<org.opendaylight.controller.sal.core.NodeConnector, Map<String, org.opendaylight.controller.sal.core.Property>>()
+        val nodes = readAllMDNodes()
+        for (node : nodes.node) {
+            val ncs = node.readAllMDNodeConnectors
+            if(ncs != null) {
+                for( nc : ncs ) {
+                    val fcnc = nc.getAugmentation(FlowCapableNodeConnector)
+                    if(fcnc != null) {
+                        val ncps = fcnc.toADNodeConnectorProperties
+                        val ncpsm = new ConcurrentHashMap<String, org.opendaylight.controller.sal.core.Property>
+                        if(ncps != null) {
+                            for(p : ncps) {
+                                ncpsm.put(p.name,p)
+                            }
+                        }  
+                        props.put(nc.id.toADNodeConnector(node.id),ncpsm)
+                    }
+                }
+            }
+        }
+        return props
     }
 
     private def FlowCapableNode readFlowCapableNode(NodeRef ref) {
         val dataObject = dataService.readOperationalData(ref.value as InstanceIdentifier<? extends DataObject>);
-        val node = dataObject.checkInstanceOf(
-            org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node);
-        return node.getAugmentation(FlowCapableNode);
+        if(dataObject != null) {
+            val node = dataObject.checkInstanceOf(
+                org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node);
+            return node.getAugmentation(FlowCapableNode);
+        }
+        return null;
     }
 
     private def FlowCapableNodeConnector readFlowCapableNodeConnector(NodeConnectorRef ref) {
         val dataObject = dataService.readOperationalData(ref.value as InstanceIdentifier<? extends DataObject>);
         val node = dataObject.checkInstanceOf(
-            org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector);
+            NodeConnector);
         return node.getAugmentation(FlowCapableNodeConnector);
     }
 
-    private static def toNodeConnectorStatistics(
-        org.opendaylight.yang.gen.v1.urn.opendaylight.model.statistics.types.rev130925.NodeConnectorStatistics output) {
-        val it = new NodeConnectorStatistics
-
-        collisionCount = output.getCollisionCount().longValue();
-        receiveCRCErrorCount = output.getReceiveCrcError().longValue();
-        receiveFrameErrorCount = output.getReceiveFrameError().longValue();
-        receiveOverRunErrorCount = output.getReceiveOverRunError().longValue();
-
-        receiveDropCount = output.getReceiveDrops().longValue();
-        receiveErrorCount = output.getReceiveErrors().longValue();
-        receivePacketCount = output.getPackets().getReceived().longValue();
-        receiveByteCount = output.getBytes().getReceived().longValue();
-
-        transmitDropCount = output.getTransmitDrops().longValue();
-        transmitErrorCount = output.getTransmitErrors().longValue();
-        transmitPacketCount = output.getPackets().getTransmitted().longValue();
-        transmitByteCount = output.getBytes().getTransmitted().longValue();
-        return it;
+    private def toNodeConnectorStatistics(
+        org.opendaylight.yang.gen.v1.urn.opendaylight.model.statistics.types.rev130925.NodeConnectorStatistics nodeConnectorStatistics, NodeId nodeId, NodeConnectorId nodeConnectorId) {
+            
+            val it = new NodeConnectorStatistics();
+            
+            receivePacketCount = nodeConnectorStatistics.packets.received.longValue;
+            transmitPacketCount = nodeConnectorStatistics.packets.transmitted.longValue;
+            
+            receiveByteCount = nodeConnectorStatistics.bytes.received.longValue;
+            transmitByteCount = nodeConnectorStatistics.bytes.transmitted.longValue;
+            
+            receiveDropCount = nodeConnectorStatistics.receiveDrops.longValue;
+            transmitDropCount = nodeConnectorStatistics.transmitDrops.longValue;
+            
+            receiveErrorCount = nodeConnectorStatistics.receiveErrors.longValue;
+            transmitErrorCount = nodeConnectorStatistics.transmitErrors.longValue;
+            
+            receiveFrameErrorCount = nodeConnectorStatistics.receiveFrameError.longValue;
+            receiveOverRunErrorCount = nodeConnectorStatistics.receiveOverRunError.longValue;
+            receiveCRCErrorCount = nodeConnectorStatistics.receiveCrcError.longValue;
+            collisionCount = nodeConnectorStatistics.collisionCount.longValue;
+            
+            val nodeConnectorRef = InstanceIdentifier.builder(Nodes)
+                                .child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node,new NodeKey(nodeId))
+                                .child(NodeConnector,new NodeConnectorKey(nodeConnectorId)).toInstance;
+            
+            nodeConnector = NodeMapping.toADNodeConnector(new NodeConnectorRef(nodeConnectorRef));
+            
+            return it;
     }
 
-    override sollicitRefresh() {
-        topologyDiscovery.solicitRefresh
+    private def toNodeTableStatistics(
+        FlowTableStatistics tableStats,
+        Short tableId,Node node){
+        var it = new NodeTableStatistics();
+        
+        activeCount = tableStats.activeFlows.value.intValue;
+        lookupCount = tableStats.packetsLookedUp.value.intValue;
+        matchedCount = tableStats.packetsMatched.value.intValue;
+        name = tableId.toString;
+        nodeTable = new NodeTable(NodeMapping.MD_SAL_TYPE,tableId,node);
+        return it;
     }
     
-    override onLinkDiscovered(LinkDiscovered notification) {
-        val update = new TopoEdgeUpdate(notification.toADEdge,Collections.emptySet(),UpdateType.ADDED);
-        discoveryPublisher.notifyEdge(notification.toADEdge,UpdateType.ADDED,Collections.emptySet());
-        topologyPublisher.edgeUpdate(Collections.singletonList(update))
+    private def toNodeDescription(NodeRef nodeRef){
+        val capableNode = readFlowCapableNode(nodeRef);
+        if(capableNode !=null) {
+            val it = new NodeDescription()
+            manufacturer = capableNode.manufacturer
+            serialNumber = capableNode.serialNumber
+            software = capableNode.software
+            description = capableNode.description
+            
+            return it;
+         }
+         return null;
     }
     
-    override onLinkOverutilized(LinkOverutilized notification) {
-        topologyPublisher.edgeOverUtilized(notification.toADEdge)
+    
+    def Edge toADEdge(Link link) {
+        new Edge(link.source.toADNodeConnector,link.destination.toADNodeConnector)
     }
     
-    override onLinkRemoved(LinkRemoved notification) {
-        val update = new TopoEdgeUpdate(notification.toADEdge,Collections.emptySet(),UpdateType.REMOVED);
-        topologyPublisher.edgeUpdate(Collections.singletonList(update))
+    /*
+     * OpendaylightFlowStatisticsListener interface implementation
+     */
+    override onAggregateFlowStatisticsUpdate(AggregateFlowStatisticsUpdate notification) {
+        //Ignoring this notification as there does not seem to be a way to bubble this up to AD-SAL
     }
     
-    override onLinkUtilizationNormal(LinkUtilizationNormal notification) {
-        topologyPublisher.edgeUtilBackToNormal(notification.toADEdge)
+    override onFlowsStatisticsUpdate(FlowsStatisticsUpdate notification) {
+        
+        val adsalFlowsStatistics = new ArrayList<FlowOnNode>();
+        val nodeRef = InstanceIdentifier.builder(Nodes).child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node,new NodeKey(notification.id)).toInstance;
+        
+        for(flowStats : notification.flowAndStatisticsMapList){
+            if(flowStats.tableId == 0)
+                adsalFlowsStatistics.add(toFlowOnNode(flowStats,nodeRef.toADNode));
+        }
+        
+        for (statsPublisher : statisticsPublisher){
+            statsPublisher.nodeFlowStatisticsUpdated(nodeRef.toADNode,adsalFlowsStatistics);
+        }
+        
+    }
+    /*
+     * OpendaylightFlowTableStatisticsListener interface implementation
+     */    
+    override onFlowTableStatisticsUpdate(FlowTableStatisticsUpdate notification) {
+        var adsalFlowTableStatistics = new ArrayList<NodeTableStatistics>();
+        
+        for(stats : notification.flowTableAndStatisticsMap){
+            if (stats.tableId.value == 0){
+                val it = new NodeTableStatistics();
+                activeCount = stats.activeFlows.value.intValue;
+                lookupCount = stats.packetsLookedUp.value.longValue;
+                matchedCount = stats.packetsMatched.value.longValue;
+                
+                adsalFlowTableStatistics.add(it);
+            }
+        }
+        for (statsPublisher : statisticsPublisher){
+            val nodeRef = InstanceIdentifier.builder(Nodes).child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node,new NodeKey(notification.id)).toInstance;
+            statsPublisher.nodeTableStatisticsUpdated(nodeRef.toADNode,adsalFlowTableStatistics);
+        }
     }
     
+    /*
+     * OpendaylightPortStatisticsUpdate interface implementation
+     */
+    override onNodeConnectorStatisticsUpdate(NodeConnectorStatisticsUpdate notification) {
+        
+        val adsalPortStatistics  = new ArrayList<NodeConnectorStatistics>();
+        
+        for(nodeConnectorStatistics : notification.nodeConnectorStatisticsAndPortNumberMap){
+            adsalPortStatistics.add(toNodeConnectorStatistics(nodeConnectorStatistics,notification.id,nodeConnectorStatistics.nodeConnectorId));
+        }
+        
+        for (statsPublisher : statisticsPublisher){
+            val nodeRef = InstanceIdentifier.builder(Nodes).child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node,new NodeKey(notification.id)).toInstance;
+            statsPublisher.nodeConnectorStatisticsUpdated(nodeRef.toADNode,adsalPortStatistics);
+        }
+        
+    }
     
-    def Edge toADEdge(Link link) {
-        new Edge(link.source.toADNodeConnector,link.destination.toADNodeConnector)
+    private static def toFlowOnNode (FlowAndStatisticsMapList flowAndStatsMap,Node node){
+        
+        val it = new FlowOnNode(ToSalConversionsUtils.toFlow(flowAndStatsMap,node));
+        
+        byteCount = flowAndStatsMap.byteCount.value.longValue;
+        packetCount = flowAndStatsMap.packetCount.value.longValue;
+        durationSeconds = flowAndStatsMap.duration.second.value.intValue;
+        durationNanoseconds = flowAndStatsMap.duration.nanosecond.value.intValue;
+        
+        return it;
+    }
+
+    override  getConfiguredNotConnectedNodes() {
+        return Collections.emptySet();
+    }
+
+
+    private def publishNodeUpdate(Node node, UpdateType updateType, Set<org.opendaylight.controller.sal.core.Property> properties){
+        for( publisher : inventoryPublisher){
+            publisher.updateNode(node, updateType, properties);
+        }
+    }
+
+    private def publishNodeConnectorUpdate(org.opendaylight.controller.sal.core.NodeConnector nodeConnector, UpdateType updateType, Set<org.opendaylight.controller.sal.core.Property> properties){
+        for( publisher : inventoryPublisher){
+            publisher.updateNodeConnector(nodeConnector, updateType, properties);
+        }
     }
 
+    private def isKnownNodeConnector(InstanceIdentifier<? extends Object> nodeConnectorIdentifier){
+        if(nodeConnectorIdentifier.path.size() < 3) {
+            return false;
+        }
+
+        val nodePath = nodeConnectorIdentifier.path.get(1);
+        val nodeConnectorPath = nodeConnectorIdentifier.getPath().get(2);
+
+        val nodeConnectors = nodeToNodeConnectorsMap.get(nodePath);
+
+        if(nodeConnectors == null){
+            return false;
+        }
+        return nodeConnectors.contains(nodeConnectorPath);
+    }
+
+
+    private def recordNodeConnector(InstanceIdentifier<? extends Object> nodeConnectorIdentifier){
+        if(nodeConnectorIdentifier.path.size() < 3) {
+            return false;
+        }
+
+        val nodePath = nodeConnectorIdentifier.path.get(1);
+        val nodeConnectorPath = nodeConnectorIdentifier.getPath().get(2);
+
+        nodeToNodeConnectorsLock.lock();
+
+        try {
+            var nodeConnectors = nodeToNodeConnectorsMap.get(nodePath);
+
+            if(nodeConnectors == null){
+                nodeConnectors = new ArrayList<InstanceIdentifier.PathArgument>();
+                nodeToNodeConnectorsMap.put(nodePath, nodeConnectors);
+            }
+
+            nodeConnectors.add(nodeConnectorPath);
+        } finally {
+            nodeToNodeConnectorsLock.unlock();
+        }
+    }
+
+    private def removeNodeConnectors(InstanceIdentifier<? extends Object> nodeIdentifier){
+        val nodePath = nodeIdentifier.path.get(1);
+
+        nodeToNodeConnectorsMap.remove(nodePath);
+    }
 }