Bug 5692 - Direct statistics RPC
[openflowplugin.git] / openflowplugin-impl / src / main / java / org / opendaylight / openflowplugin / impl / device / DeviceContextImpl.java
index 5af5bcbbe0f41f48ab3a632a2051b4bea1e2e49f..1d82ea0f2f89d7e7784f5e12fc33088842ca7718 100644 (file)
@@ -8,24 +8,25 @@
 package org.opendaylight.openflowplugin.impl.device;
 
 import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Function;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Verify;
+import com.google.common.util.concurrent.AsyncFunction;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
-import io.netty.util.HashedWheelTimer;
 import io.netty.util.Timeout;
 import java.math.BigInteger;
-import java.util.Collection;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicLong;
+import javax.annotation.CheckForNull;
 import javax.annotation.Nonnull;
 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
 import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
-import org.opendaylight.controller.md.sal.binding.api.NotificationService;
-import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
+import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.openflowjava.protocol.api.connection.ConnectionAdapter;
 import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueue;
@@ -38,8 +39,8 @@ import org.opendaylight.openflowplugin.api.openflow.device.MessageTranslator;
 import org.opendaylight.openflowplugin.api.openflow.device.RequestContext;
 import org.opendaylight.openflowplugin.api.openflow.device.TranslatorLibrary;
 import org.opendaylight.openflowplugin.api.openflow.device.Xid;
-import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceContextClosedHandler;
 import org.opendaylight.openflowplugin.api.openflow.device.handlers.MultiMsgCollector;
+import org.opendaylight.openflowplugin.api.openflow.lifecycle.LifecycleConductor;
 import org.opendaylight.openflowplugin.api.openflow.md.core.SwitchConnectionDistinguisher;
 import org.opendaylight.openflowplugin.api.openflow.md.core.TranslatorKey;
 import org.opendaylight.openflowplugin.api.openflow.registry.ItemLifeCycleRegistry;
@@ -51,6 +52,7 @@ import org.opendaylight.openflowplugin.api.openflow.registry.meter.DeviceMeterRe
 import org.opendaylight.openflowplugin.api.openflow.rpc.ItemLifeCycleKeeper;
 import org.opendaylight.openflowplugin.api.openflow.rpc.RpcContext;
 import org.opendaylight.openflowplugin.api.openflow.rpc.listener.ItemLifecycleListener;
+import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsContext;
 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.MessageSpy;
 import org.opendaylight.openflowplugin.extension.api.ConvertorMessageFromOFJava;
 import org.opendaylight.openflowplugin.extension.api.ExtensionConverterProviderKeeper;
@@ -64,6 +66,9 @@ import org.opendaylight.openflowplugin.impl.registry.flow.DeviceFlowRegistryImpl
 import org.opendaylight.openflowplugin.impl.registry.flow.FlowRegistryKeyFactory;
 import org.opendaylight.openflowplugin.impl.registry.group.DeviceGroupRegistryImpl;
 import org.opendaylight.openflowplugin.impl.registry.meter.DeviceMeterRegistryImpl;
+import org.opendaylight.openflowplugin.impl.rpc.RpcContextImpl;
+import org.opendaylight.openflowplugin.impl.util.DeviceInitializationUtils;
+import org.opendaylight.openflowplugin.impl.util.MdSalRegistrationUtils;
 import org.opendaylight.openflowplugin.openflow.md.core.session.SwitchConnectionCookieOFImpl;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.experimenter.message.service.rev151020.ExperimenterMessageFromDevBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
@@ -73,6 +78,7 @@ import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.ta
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
 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.NodeId;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorBuilder;
@@ -93,7 +99,7 @@ import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.experimenter
 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.FlowCapableNodeConnectorStatisticsData;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.FlowCapableNodeConnectorStatisticsDataBuilder;
-import org.opendaylight.yangtools.yang.binding.ChildOf;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.OfpRole;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
@@ -108,7 +114,7 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     private static final Logger LOG = LoggerFactory.getLogger(DeviceContextImpl.class);
 
     // TODO: drain factor should be parametrized
-    public static final float REJECTED_DRAIN_FACTOR = 0.25f;
+    private static final float REJECTED_DRAIN_FACTOR = 0.25f;
     // TODO: low water mark factor should be parametrized
     private static final float LOW_WATERMARK_FACTOR = 0.75f;
     // TODO: high water mark factor should be parametrized
@@ -117,50 +123,55 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     private final ConnectionContext primaryConnectionContext;
     private final DeviceState deviceState;
     private final DataBroker dataBroker;
-    private final HashedWheelTimer hashedWheelTimer;
     private final Map<SwitchConnectionDistinguisher, ConnectionContext> auxiliaryConnectionContexts;
     private final TransactionChainManager transactionChainManager;
     private final DeviceFlowRegistry deviceFlowRegistry;
     private final DeviceGroupRegistry deviceGroupRegistry;
     private final DeviceMeterRegistry deviceMeterRegistry;
-    private final Collection<DeviceContextClosedHandler> closeHandlers = new HashSet<>();
     private final PacketInRateLimiter packetInLimiter;
     private final MessageSpy messageSpy;
     private final ItemLifeCycleKeeper flowLifeCycleKeeper;
     private NotificationPublishService notificationPublishService;
-    private NotificationService notificationService;
     private final OutboundQueue outboundQueueProvider;
     private Timeout barrierTaskTimeout;
     private final MessageTranslator<PortGrouping, FlowCapableNodeConnector> portStatusTranslator;
     private final MessageTranslator<PacketInMessage, PacketReceived> packetInTranslator;
     private final MessageTranslator<FlowRemoved, org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowRemoved> flowRemovedTranslator;
     private final TranslatorLibrary translatorLibrary;
-    private Map<Long, NodeConnectorRef> nodeConnectorCache;
-    private ItemLifeCycleRegistry itemLifeCycleSourceRegistry;
+    private final Map<Long, NodeConnectorRef> nodeConnectorCache;
+    private final ItemLifeCycleRegistry itemLifeCycleSourceRegistry;
     private RpcContext rpcContext;
     private ExtensionConverterProvider extensionConverterProvider;
 
+    private final boolean switchFeaturesMandatory;
+    private StatisticsContext statisticsContext;
+
+    private final NodeId nodeId;
+
+    private volatile DEVICE_CONTEXT_STATE deviceCtxState;
+    private boolean isStatisticsRpcEnabled;
+
 
     @VisibleForTesting
     DeviceContextImpl(@Nonnull final ConnectionContext primaryConnectionContext,
                       @Nonnull final DeviceState deviceState,
                       @Nonnull final DataBroker dataBroker,
-                      @Nonnull final HashedWheelTimer hashedWheelTimer,
-                      @Nonnull final MessageSpy _messageSpy,
+                      @Nonnull final LifecycleConductor conductor,
                       @Nonnull final OutboundQueueProvider outboundQueueProvider,
                       @Nonnull final TranslatorLibrary translatorLibrary,
-                      @Nonnull final TransactionChainManager transactionChainManager) {
+                      final boolean switchFeaturesMandatory) {
+        this.switchFeaturesMandatory = switchFeaturesMandatory;
         this.primaryConnectionContext = Preconditions.checkNotNull(primaryConnectionContext);
         this.deviceState = Preconditions.checkNotNull(deviceState);
         this.dataBroker = Preconditions.checkNotNull(dataBroker);
-        this.hashedWheelTimer = Preconditions.checkNotNull(hashedWheelTimer);
+        Preconditions.checkNotNull(conductor);
         this.outboundQueueProvider = Preconditions.checkNotNull(outboundQueueProvider);
-        this.transactionChainManager = Preconditions.checkNotNull(transactionChainManager);
+        this.transactionChainManager = new TransactionChainManager(dataBroker, deviceState, conductor);
         auxiliaryConnectionContexts = new HashMap<>();
         deviceFlowRegistry = new DeviceFlowRegistryImpl();
         deviceGroupRegistry = new DeviceGroupRegistryImpl();
         deviceMeterRegistry = new DeviceMeterRegistryImpl();
-        messageSpy = _messageSpy;
+        messageSpy = conductor.getMessageIntelligenceAgency();
 
         packetInLimiter = new PacketInRateLimiter(primaryConnectionContext.getConnectionAdapter(),
                 /*initial*/ 1000, /*initial*/2000, messageSpy, REJECTED_DRAIN_FACTOR);
@@ -179,6 +190,9 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
         itemLifeCycleSourceRegistry = new ItemLifeCycleRegistryImpl();
         flowLifeCycleKeeper = new ItemLifeCycleSourceImpl();
         itemLifeCycleSourceRegistry.registerLifeCycleSource(flowLifeCycleKeeper);
+        deviceCtxState = DEVICE_CONTEXT_STATE.INITIALIZATION;
+
+        nodeId = primaryConnectionContext.getNodeId();
     }
 
     /**
@@ -189,25 +203,13 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
         transactionChainManager.initialSubmitWriteTransaction();
     }
 
-    /**
-     * This method is called fron
-     */
-    void cancelTransaction() {
-        transactionChainManager.cancelWriteTransaction();
-    }
-
     @Override
-    public Long getReservedXid() {
+    public Long reserveXidForDeviceMessage() {
         return outboundQueueProvider.reserveEntry();
     }
 
     @Override
-    public <M extends ChildOf<DataObject>> void onMessage(final M message, final RequestContext<?> requestContext) {
-        // TODO Auto-generated method stub
-    }
-
-    @Override
-    public void addAuxiliaryConenctionContext(final ConnectionContext connectionContext) {
+    public void addAuxiliaryConnectionContext(final ConnectionContext connectionContext) {
         final SwitchConnectionDistinguisher connectionDistinguisher = createConnectionDistinguisher(connectionContext);
         auxiliaryConnectionContexts.put(connectionDistinguisher, connectionContext);
     }
@@ -217,8 +219,11 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public void removeAuxiliaryConenctionContext(final ConnectionContext connectionContext) {
-        // TODO Auto-generated method stub
+    public void removeAuxiliaryConnectionContext(final ConnectionContext connectionContext) {
+        final SwitchConnectionDistinguisher connectionDistinguisher = createConnectionDistinguisher(connectionContext);
+        LOG.debug("auxiliary connection dropped: {}, nodeId:{}", connectionContext.getConnectionAdapter()
+                .getRemoteAddress(), nodeId);
+        auxiliaryConnectionContexts.remove(connectionDistinguisher);
     }
 
     @Override
@@ -227,18 +232,117 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public ReadTransaction getReadTransaction() {
+    public ReadOnlyTransaction getReadTransaction() {
         return dataBroker.newReadOnlyTransaction();
     }
 
+    @Override
+    public ListenableFuture<Void> onClusterRoleChange(final OfpRole oldRole, @CheckForNull final OfpRole role) {
+        LOG.trace("onClusterRoleChange {} for node:", role, nodeId);
+        Preconditions.checkArgument(role != null);
+        if (role.equals(oldRole)) {
+            LOG.debug("Demanded role change for device {} is not changed. OldRole: {}, NewRole {}", nodeId, oldRole, role);
+            return Futures.immediateFuture(null);
+        }
+        if (OfpRole.BECOMEMASTER.equals(role)) {
+            return onDeviceTakeClusterLeadership();
+        } else if (OfpRole.BECOMESLAVE.equals(role)) {
+            return onDeviceLostClusterLeadership();
+        } else {
+            LOG.warn("Unknown OFCluster Role {} for Node {}", role, nodeId);
+            if (null != rpcContext) {
+                MdSalRegistrationUtils.unregisterServices(rpcContext);
+            }
+            return transactionChainManager.deactivateTransactionManager();
+        }
+    }
+
+    @Override
+    public ListenableFuture<Void> onDeviceLostClusterLeadership() {
+        LOG.trace("onDeviceLostClusterLeadership for node: {}", nodeId);
+        if (null != rpcContext) {
+            MdSalRegistrationUtils.registerSlaveServices(rpcContext, OfpRole.BECOMESLAVE);
+        }
+        return transactionChainManager.deactivateTransactionManager();
+    }
+
+    @Override
+    public ListenableFuture<Void> onDeviceTakeClusterLeadership() {
+        LOG.trace("onDeviceTakeClusterLeadership for node: {}", nodeId);
+        /* validation */
+        if (statisticsContext == null) {
+            final String errMsg = String.format("DeviceCtx %s is up but we are missing StatisticsContext", nodeId);
+            LOG.warn(errMsg);
+            return Futures.immediateFailedFuture(new IllegalStateException(errMsg));
+        }
+        if (rpcContext == null) {
+            final String errMsg = String.format("DeviceCtx %s is up but we are missing RpcContext", nodeId);
+            LOG.warn(errMsg);
+            return Futures.immediateFailedFuture(new IllegalStateException(errMsg));
+        }
+        /* Routed RPC registration */
+        MdSalRegistrationUtils.registerMasterServices(getRpcContext(), DeviceContextImpl.this, OfpRole.BECOMEMASTER);
+
+        if (isStatisticsRpcEnabled) {
+            MdSalRegistrationUtils.registerStatCompatibilityServices(getRpcContext(), this,
+                    notificationPublishService, new AtomicLong());
+        }
+
+        /* Prepare init info collecting */
+        getDeviceState().setDeviceSynchronized(false);
+        transactionChainManager.activateTransactionManager();
+        /* Init Collecting NodeInfo */
+        final ListenableFuture<Void> initCollectingDeviceInfo = DeviceInitializationUtils.initializeNodeInformation(
+                DeviceContextImpl.this, switchFeaturesMandatory);
+        /* Init Collecting StatInfo */
+        final ListenableFuture<Boolean> statPollFuture = Futures.transform(initCollectingDeviceInfo,
+                new AsyncFunction<Void, Boolean>() {
+
+                    @Override
+                    public ListenableFuture<Boolean> apply(@Nonnull final Void input) throws Exception {
+                        getStatisticsContext().statListForCollectingInitialization();
+                        return getStatisticsContext().gatherDynamicData();
+                    }
+                });
+
+        return Futures.transform(statPollFuture, new Function<Boolean, Void>() {
+
+            @Override
+            public Void apply(final Boolean input) {
+                if (ConnectionContext.CONNECTION_STATE.RIP.equals(getPrimaryConnectionContext().getConnectionState())) {
+                    final String errMsg = String.format("We lost connection for Device %s, context has to be closed.",
+                            getDeviceState().getNodeId());
+                    LOG.warn(errMsg);
+                    throw new IllegalStateException(errMsg);
+                }
+                if (!input) {
+                    final String errMsg = String.format("Get Initial Device %s information fails",
+                            getDeviceState().getNodeId());
+                    LOG.warn(errMsg);
+                    throw new IllegalStateException(errMsg);
+                }
+                LOG.debug("Get Initial Device {} information is successful", nodeId);
+                getDeviceState().setDeviceSynchronized(true);
+                initialSubmitTransaction();
+                getDeviceState().setStatisticsPollingEnabledProp(true);
+                return null;
+            }
+        });
+    }
+
     @Override
     public <T extends DataObject> void writeToTransaction(final LogicalDatastoreType store,
-                                                          final InstanceIdentifier<T> path, final T data) {
-        transactionChainManager.writeToTransaction(store, path, data);
+                                                          final InstanceIdentifier<T> path, final T data) throws Exception {
+        transactionChainManager.writeToTransaction(store, path, data, false);
     }
 
     @Override
-    public <T extends DataObject> void addDeleteToTxChain(final LogicalDatastoreType store, final InstanceIdentifier<T> path) {
+    public <T extends DataObject> void writeToTransactionWithParentsSlow(LogicalDatastoreType store, InstanceIdentifier<T> path, T data) throws Exception {
+        transactionChainManager.writeToTransaction(store, path, data, true);
+    }
+
+    @Override
+    public <T extends DataObject> void addDeleteToTxChain(final LogicalDatastoreType store, final InstanceIdentifier<T> path) throws Exception {
         transactionChainManager.addDeleteOperationTotTxChain(store, path);
     }
 
@@ -294,15 +398,15 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
         if (itemLifecycleListener != null) {
             //1. translate to general flow (table, priority, match, cookie)
             final org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowRemoved flowRemovedNotification =
-                    flowRemovedTranslator.translate(flowRemoved, this, null);
+                    flowRemovedTranslator.translate(flowRemoved, this.getDeviceState(), null);
             //2. create registry key
-            FlowRegistryKey flowRegKey = FlowRegistryKeyFactory.create(flowRemovedNotification);
+            final FlowRegistryKey flowRegKey = FlowRegistryKeyFactory.create(flowRemovedNotification);
             //3. lookup flowId
             final FlowDescriptor flowDescriptor = deviceFlowRegistry.retrieveIdForFlow(flowRegKey);
             //4. if flowId present:
             if (flowDescriptor != null) {
                 // a) construct flow path
-                KeyedInstanceIdentifier<Flow, FlowKey> flowPath = getDeviceState().getNodeInstanceIdentifier()
+                final KeyedInstanceIdentifier<Flow, FlowKey> flowPath = getDeviceState().getNodeInstanceIdentifier()
                         .augmentation(FlowCapableNode.class)
                         .child(Table.class, flowDescriptor.getTableKey())
                         .child(Flow.class, new FlowKey(flowDescriptor.getFlowId()));
@@ -318,19 +422,23 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     @Override
     public void processPortStatusMessage(final PortStatusMessage portStatus) {
         messageSpy.spyMessage(portStatus.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_PUBLISHED_SUCCESS);
-        final FlowCapableNodeConnector flowCapableNodeConnector = portStatusTranslator.translate(portStatus, this, null);
+        final FlowCapableNodeConnector flowCapableNodeConnector = portStatusTranslator.translate(portStatus, this.getDeviceState(), null);
 
         final KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey> iiToNodeConnector = provideIIToNodeConnector(portStatus.getPortNo(), portStatus.getVersion());
-        if (portStatus.getReason().equals(PortReason.OFPPRADD) || portStatus.getReason().equals(PortReason.OFPPRMODIFY)) {
-            // because of ADD status node connector has to be created
-            final NodeConnectorBuilder nConnectorBuilder = new NodeConnectorBuilder().setKey(iiToNodeConnector.getKey());
-            nConnectorBuilder.addAugmentation(FlowCapableNodeConnectorStatisticsData.class, new FlowCapableNodeConnectorStatisticsDataBuilder().build());
-            nConnectorBuilder.addAugmentation(FlowCapableNodeConnector.class, flowCapableNodeConnector);
-            writeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToNodeConnector, nConnectorBuilder.build());
-        } else if (portStatus.getReason().equals(PortReason.OFPPRDELETE)) {
-            addDeleteToTxChain(LogicalDatastoreType.OPERATIONAL, iiToNodeConnector);
+        try {
+            if (portStatus.getReason().equals(PortReason.OFPPRADD) || portStatus.getReason().equals(PortReason.OFPPRMODIFY)) {
+                // because of ADD status node connector has to be created
+                final NodeConnectorBuilder nConnectorBuilder = new NodeConnectorBuilder().setKey(iiToNodeConnector.getKey());
+                nConnectorBuilder.addAugmentation(FlowCapableNodeConnectorStatisticsData.class, new FlowCapableNodeConnectorStatisticsDataBuilder().build());
+                nConnectorBuilder.addAugmentation(FlowCapableNodeConnector.class, flowCapableNodeConnector);
+                writeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToNodeConnector, nConnectorBuilder.build());
+            } else if (portStatus.getReason().equals(PortReason.OFPPRDELETE)) {
+                addDeleteToTxChain(LogicalDatastoreType.OPERATIONAL, iiToNodeConnector);
+            }
+            submitTransaction();
+        } catch (final Exception e) {
+            LOG.warn("Error processing port status message: {}", e.getMessage());
         }
-        submitTransaction();
     }
 
     private KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey> provideIIToNodeConnector(final long portNo, final short version) {
@@ -344,25 +452,27 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     public void processPacketInMessage(final PacketInMessage packetInMessage) {
         messageSpy.spyMessage(packetInMessage.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH);
         final ConnectionAdapter connectionAdapter = getPrimaryConnectionContext().getConnectionAdapter();
-        final PacketReceived packetReceived = packetInTranslator.translate(packetInMessage, this, null);
+        final PacketReceived packetReceived = packetInTranslator.translate(packetInMessage, this.getDeviceState(), null);
 
         if (packetReceived == null) {
             LOG.debug("Received a null packet from switch {}", connectionAdapter.getRemoteAddress());
+            messageSpy.spyMessage(packetInMessage.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_TRANSLATE_SRC_FAILURE);
             return;
+        } else {
+            messageSpy.spyMessage(packetReceived.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_TRANSLATE_OUT_SUCCESS);
         }
 
         if (!packetInLimiter.acquirePermit()) {
             LOG.debug("Packet limited");
             // TODO: save packet into emergency slot if possible
-            // FIXME: some other counter
-            messageSpy.spyMessage(packetReceived.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_TRANSLATE_SRC_FAILURE);
+            messageSpy.spyMessage(packetReceived.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_PACKET_IN_LIMIT_REACHED_AND_DROPPED);
             return;
         }
 
-        final ListenableFuture<? extends Object> offerNotification = notificationPublishService.offerNotification(packetReceived);
+        final ListenableFuture<?> offerNotification = notificationPublishService.offerNotification(packetReceived);
         if (NotificationPublishService.REJECTED.equals(offerNotification)) {
             LOG.debug("notification offer rejected");
-            messageSpy.spyMessage(packetReceived.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_TRANSLATE_SRC_FAILURE);
+            messageSpy.spyMessage(packetReceived.getImplementedInterface(), MessageSpy.STATISTIC_GROUP.FROM_SWITCH_NOTIFICATION_REJECTED);
             packetInLimiter.drainLowWaterMark();
             packetInLimiter.releasePermit();
             return;
@@ -386,10 +496,10 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public void processExperimenterMessage(ExperimenterMessage notification) {
+    public void processExperimenterMessage(final ExperimenterMessage notification) {
         // lookup converter
-        ExperimenterDataOfChoice vendorData = notification.getExperimenterDataOfChoice();
-        MessageTypeKey<? extends ExperimenterDataOfChoice> key = new MessageTypeKey<>(
+        final ExperimenterDataOfChoice vendorData = notification.getExperimenterDataOfChoice();
+        final MessageTypeKey<? extends ExperimenterDataOfChoice> key = new MessageTypeKey<>(
                 deviceState.getVersion(),
                 (Class<? extends ExperimenterDataOfChoice>) vendorData.getImplementedInterface());
         final ConvertorMessageFromOFJava<ExperimenterDataOfChoice, MessagePath> messageConverter = extensionConverterProvider.getMessageConverter(key);
@@ -408,8 +518,8 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
                     .setExperimenterMessageOfChoice(messageOfChoice);
             // publish
             notificationPublishService.offerNotification(experimenterMessageFromDevBld.build());
-        } catch (ConversionException e) {
-            LOG.warn("Conversion of experimenter notification failed", e);
+        } catch (final ConversionException e) {
+            LOG.error("Conversion of experimenter notification failed", e);
         }
     }
 
@@ -419,64 +529,12 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public HashedWheelTimer getTimer() {
-        return hashedWheelTimer;
-    }
-
-    @Override
-    public void close() {
+    public synchronized void close() {
         LOG.debug("closing deviceContext: {}, nodeId:{}",
                 getPrimaryConnectionContext().getConnectionAdapter().getRemoteAddress(),
                 getDeviceState().getNodeId());
-
-        tearDown();
-
-        primaryConnectionContext.closeConnection(false);
-    }
-
-    private void tearDown() {
-        deviceState.setValid(false);
-
-        for (final ConnectionContext connectionContext : auxiliaryConnectionContexts.values()) {
-            connectionContext.closeConnection(false);
-        }
-
-        deviceGroupRegistry.close();
-        deviceFlowRegistry.close();
-        deviceMeterRegistry.close();
-
-        itemLifeCycleSourceRegistry.clear();
-
-
-        for (final DeviceContextClosedHandler deviceContextClosedHandler : closeHandlers) {
-            deviceContextClosedHandler.onDeviceContextClosed(this);
-        }
-
-        LOG.info("Closing transaction chain manager without cleaning inventory operational");
-        transactionChainManager.close();
-    }
-
-    @Override
-    public void onDeviceDisconnectedFromCluster() {
-        LOG.info("Removing device from operational and closing transaction Manager for device:{}", getDeviceState().getNodeId());
-        transactionChainManager.cleanupPostClosure();
-    }
-
-    @Override
-    public void onDeviceDisconnected(final ConnectionContext connectionContext) {
-        if (getPrimaryConnectionContext().equals(connectionContext)) {
-            try {
-                tearDown();
-            } catch (final Exception e) {
-                LOG.trace("Error closing device context.");
-            }
-        } else {
-            LOG.debug("auxiliary connection dropped: {}, nodeId:{}",
-                    connectionContext.getConnectionAdapter().getRemoteAddress(),
-                    getDeviceState().getNodeId());
-            final SwitchConnectionDistinguisher connectionDistinguisher = createConnectionDistinguisher(connectionContext);
-            auxiliaryConnectionContexts.remove(connectionDistinguisher);
-        }
+        // NOOP
+        throw new UnsupportedOperationException("Autocloseble.close will be removed soon");
     }
 
     @Override
@@ -489,11 +547,6 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
         return barrierTaskTimeout;
     }
 
-    @Override
-    public void setNotificationService(final NotificationService notificationServiceParam) {
-        notificationService = notificationServiceParam;
-    }
-
     @Override
     public void setNotificationPublishService(final NotificationPublishService notificationPublishService) {
         this.notificationPublishService = notificationPublishService;
@@ -504,13 +557,10 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
         return messageSpy;
     }
 
-    @Override
-    public void addDeviceContextClosedHandler(final DeviceContextClosedHandler deviceContextClosedHandler) {
-        closeHandlers.add(deviceContextClosedHandler);
-    }
-
     @Override
     public void onPublished() {
+        Verify.verify(DEVICE_CONTEXT_STATE.INITIALIZATION.equals(deviceCtxState));
+        deviceCtxState = DEVICE_CONTEXT_STATE.WORKING;
         primaryConnectionContext.getConnectionAdapter().setPacketInFiltering(false);
         for (final ConnectionContext switchAuxConnectionContext : auxiliaryConnectionContexts.values()) {
             switchAuxConnectionContext.getConnectionAdapter().setPacketInFiltering(false);
@@ -523,19 +573,19 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public NodeConnectorRef lookupNodeConnectorRef(Long portNumber) {
+    public NodeConnectorRef lookupNodeConnectorRef(final Long portNumber) {
         return nodeConnectorCache.get(portNumber);
     }
 
     @Override
-    public void storeNodeConnectorRef(final Long portNumber, final NodeConnectorRef nodeConnectorRef) {
+    public void storeNodeConnectorRef(@Nonnull final Long portNumber, @Nonnull final NodeConnectorRef nodeConnectorRef) {
         nodeConnectorCache.put(
                 Preconditions.checkNotNull(portNumber),
                 Preconditions.checkNotNull(nodeConnectorRef));
     }
 
     @Override
-    public void updatePacketInRateLimit(long upperBound) {
+    public void updatePacketInRateLimit(final long upperBound) {
         packetInLimiter.changeWaterMarks((int) (LOW_WATERMARK_FACTOR * upperBound), (int) (HIGH_WATERMARK_FACTOR * upperBound));
     }
 
@@ -545,7 +595,7 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public void setRpcContext(RpcContext rpcContext) {
+    public void setRpcContext(final RpcContext rpcContext) {
         this.rpcContext = rpcContext;
     }
 
@@ -555,7 +605,7 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     }
 
     @Override
-    public void setExtensionConverterProvider(ExtensionConverterProvider extensionConverterProvider) {
+    public void setExtensionConverterProvider(final ExtensionConverterProvider extensionConverterProvider) {
         this.extensionConverterProvider = extensionConverterProvider;
     }
 
@@ -563,4 +613,62 @@ public class DeviceContextImpl implements DeviceContext, ExtensionConverterProvi
     public ExtensionConverterProvider getExtensionConverterProvider() {
         return extensionConverterProvider;
     }
+
+    @Override
+    public void setStatisticsContext(final StatisticsContext statisticsContext) {
+        this.statisticsContext = statisticsContext;
+    }
+
+    @Override
+    public StatisticsContext getStatisticsContext() {
+        return statisticsContext;
+    }
+
+    @Override
+    public synchronized void shutdownConnection() {
+        LOG.debug("Shutdown method for node {}", nodeId);
+        deviceState.setValid(false);
+        if (DEVICE_CONTEXT_STATE.TERMINATION.equals(deviceCtxState)) {
+            LOG.debug("DeviceCtx for Node {} is in termination process.", nodeId);
+            return;
+        }
+        deviceCtxState = DEVICE_CONTEXT_STATE.TERMINATION;
+
+        if (ConnectionContext.CONNECTION_STATE.RIP.equals(getPrimaryConnectionContext().getConnectionState())) {
+            LOG.debug("ConnectionCtx for Node {} is in RIP state.", deviceState.getNodeId());
+            return;
+        }
+        /* Terminate Auxiliary Connection */
+        for (final ConnectionContext connectionContext : auxiliaryConnectionContexts.values()) {
+            LOG.debug("Closing auxiliary connection {}", connectionContext.getNodeId());
+            connectionContext.closeConnection(false);
+        }
+        /* Terminate Primary Connection */
+        getPrimaryConnectionContext().closeConnection(true);
+        /* Close all Group Registry */
+        deviceGroupRegistry.close();
+        deviceFlowRegistry.close();
+        deviceMeterRegistry.close();
+    }
+
+    @Override
+    public void setStatisticsRpcEnabled(boolean isStatisticsRpcEnabled) {
+        this.isStatisticsRpcEnabled = isStatisticsRpcEnabled;
+    }
+
+    @Override
+    public DEVICE_CONTEXT_STATE getDeviceContextState() {
+        return deviceCtxState;
+    }
+
+    @Override
+    public ListenableFuture<Void> shuttingDownDataStoreTransactions() {
+        deviceState.setValid(false);
+        return transactionChainManager.shuttingDown();
+    }
+
+    @VisibleForTesting
+    TransactionChainManager getTransactionChainManager() {
+        return this.transactionChainManager;
+    }
 }