Merge "Bump model revisions to 2010.09.24.2-SNAPSHOT"
[controller.git] / opendaylight / md-sal / forwardingrules-manager / src / main / java / org / opendaylight / controller / forwardingrulesmanager / consumer / impl / FlowConsumerImpl.java
index 2ffe0ecd87eee775b08f6e5b51c1e0febcb66baf..2710104fcfac524ea9cd71cb023f151b81f98c90 100644 (file)
@@ -1,8 +1,10 @@
 package org.opendaylight.controller.forwardingrulesmanager.consumer.impl;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.EnumSet;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -20,31 +22,18 @@ import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler.Data
 import org.opendaylight.controller.md.sal.common.api.data.DataModification;
 import org.opendaylight.controller.sal.common.util.Rpcs;
 import org.opendaylight.controller.sal.core.IContainer;
-import org.opendaylight.controller.sal.utils.GlobalConstants;
 import org.opendaylight.controller.sal.utils.ServiceHelper;
-import org.opendaylight.controller.sal.utils.Status;
-import org.opendaylight.controller.sal.utils.StatusCode;
-import org.opendaylight.controller.switchmanager.ISwitchManager;
-import org.opendaylight.controller.switchmanager.Switch;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.config.rev130819.Flows;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.config.rev130819.flows.Flow;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.config.rev130819.flows.FlowKey;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowInput;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowInputBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowOutput;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowAdded;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowRemoved;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowUpdated;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.NodeErrorNotification;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.NodeExperimenterErrorNotification;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.NodeFlow;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.RemoveFlowInputBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SalFlowListener;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SalFlowService;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SwitchFlowRemoved;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.UpdateFlowInputBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.flow.update.UpdatedFlowBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
 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.Nodes;
@@ -54,13 +43,15 @@ import org.opendaylight.yangtools.concepts.Registration;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.opendaylight.yangtools.yang.binding.NotificationListener;
+import org.opendaylight.yangtools.yang.common.RpcError;
 import org.opendaylight.yangtools.yang.common.RpcResult;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public class FlowConsumerImpl implements IForwardingRulesManager {
     protected static final Logger logger = LoggerFactory.getLogger(FlowConsumerImpl.class);
-    private final FlowEventListener flowEventListener = new FlowEventListener();
+    // private final FlowEventListener flowEventListener = new
+    // FlowEventListener();
     private Registration<NotificationListener> listener1Reg;
     private SalFlowService flowService;
     // private FlowDataListener listener;
@@ -86,13 +77,11 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
     private boolean inContainerMode; // being used by global instance only
 
     public FlowConsumerImpl() {
-        InstanceIdentifier<? extends DataObject> path = InstanceIdentifier.builder(Flows.class).child(Flow.class)
-                .toInstance();
+        InstanceIdentifier<? extends DataObject> path = InstanceIdentifier.builder(Flows.class).toInstance();
         flowService = FRMConsumerImpl.getProviderSession().getRpcService(SalFlowService.class);
 
         if (null == flowService) {
             logger.error("Consumer SAL Service is down or NULL. FRM may not function as intended");
-            System.out.println("Consumer SAL Service is down or NULL.");
             return;
         }
 
@@ -107,21 +96,19 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
         // }
 
         // For switch events
-        listener1Reg = FRMConsumerImpl.getNotificationService().registerNotificationListener(flowEventListener);
+        // listener1Reg =
+        // FRMConsumerImpl.getNotificationService().registerNotificationListener(flowEventListener);
 
         if (null == listener1Reg) {
             logger.error("Listener to listen on flow data modifcation events");
-            System.out.println("Consumer SAL Service is down or NULL.");
             return;
         }
         // addFlowTest();
-        System.out.println("-------------------------------------------------------------------");
-        allocateCaches();
         commitHandler = new FlowDataCommitHandler();
         FRMConsumerImpl.getDataProviderService().registerCommitHandler(path, commitHandler);
         clusterContainerService = (IClusterContainerServices) ServiceHelper.getGlobalInstance(
                 IClusterContainerServices.class, this);
-        container = (IContainer) ServiceHelper.getGlobalInstance(IContainer.class, this);
+        allocateCaches();
         /*
          * If we are not the first cluster node to come up, do not initialize
          * the static flow entries ordinal
@@ -167,9 +154,7 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
             AddFlowInput firstMsg = input1.build();
 
             if (null != flowService) {
-                System.out.println(flowService.toString());
-            } else {
-                System.out.println("ConsumerFlowService is NULL");
+                logger.error("ConsumerFlowService is NULL");
             }
             @SuppressWarnings("unused")
             Future<RpcResult<AddFlowOutput>> result1 = flowService.addFlow(firstMsg);
@@ -189,28 +174,42 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
     private void addFlow(InstanceIdentifier<?> path, Flow dataObject) {
 
         AddFlowInputBuilder input = new AddFlowInputBuilder();
-        List<Instruction> inst = (dataObject).getInstructions().getInstruction();
+
         input.setNode((dataObject).getNode());
         input.setPriority((dataObject).getPriority());
         input.setMatch((dataObject).getMatch());
         input.setCookie((dataObject).getCookie());
         input.setInstructions((dataObject).getInstructions());
-        dataObject.getMatch().getLayer3Match();
-        for (int i = 0; i < inst.size(); i++) {
-            System.out.println("i = " + i + inst.get(i).getInstruction().toString());
-            System.out.println("i = " + i + inst.get(i).toString());
-        }
-
-        System.out.println("Instruction list" + (dataObject).getInstructions().getInstruction().toString());
+        input.setBufferId(dataObject.getBufferId());
+        input.setTableId(dataObject.getTableId());
+        input.setOutPort(dataObject.getOutPort());
+        input.setOutGroup(dataObject.getOutGroup());
+        input.setIdleTimeout(dataObject.getIdleTimeout());
+        input.setHardTimeout(dataObject.getHardTimeout());
+        input.setFlowName(dataObject.getFlowName());
+        input.setFlags(dataObject.getFlags());
+        input.setCookieMask(dataObject.getCookieMask());
+        input.setContainerName(dataObject.getContainerName());
+        input.setBarrier(dataObject.isBarrier());
+        input.setInstallHw(dataObject.isInstallHw());
+        input.setStrict(dataObject.isStrict());
 
         // updating the staticflow cache
-        Integer ordinal = staticFlowsOrdinal.get(0);
-        staticFlowsOrdinal.put(0, ++ordinal);
-        staticFlows.put(ordinal, dataObject);
+        /*
+         * Commented out... as in many other places... use of ClusteringServices
+         * is breaking things insufficient time to debug Integer ordinal =
+         * staticFlowsOrdinal.get(0); staticFlowsOrdinal.put(0, ++ordinal);
+         * staticFlows.put(ordinal, dataObject);
+         */
 
         // We send flow to the sounthbound plugin
+
         flowService.addFlow(input.build());
-        updateLocalDatabase((NodeFlow) dataObject, true);
+
+        /*
+         * Commented out as this will also break due to improper use of
+         * ClusteringServices updateLocalDatabase((NodeFlow) dataObject, true);
+         */
     }
 
     /**
@@ -222,28 +221,39 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
     private void removeFlow(InstanceIdentifier<?> path, Flow dataObject) {
 
         RemoveFlowInputBuilder input = new RemoveFlowInputBuilder();
-        List<Instruction> inst = (dataObject).getInstructions().getInstruction();
         input.setNode((dataObject).getNode());
         input.setPriority((dataObject).getPriority());
         input.setMatch((dataObject).getMatch());
         input.setCookie((dataObject).getCookie());
         input.setInstructions((dataObject).getInstructions());
-        dataObject.getMatch().getLayer3Match();
-        for (int i = 0; i < inst.size(); i++) {
-            System.out.println("i = " + i + inst.get(i).getInstruction().toString());
-            System.out.println("i = " + i + inst.get(i).toString());
-        }
-
-        System.out.println("Instruction list" + (dataObject).getInstructions().getInstruction().toString());
-
+        input.setBufferId(dataObject.getBufferId());
+        input.setTableId(dataObject.getTableId());
+        input.setOutPort(dataObject.getOutPort());
+        input.setOutGroup(dataObject.getOutGroup());
+        input.setIdleTimeout(dataObject.getIdleTimeout());
+        input.setHardTimeout(dataObject.getHardTimeout());
+        input.setFlowName(dataObject.getFlowName());
+        input.setFlags(dataObject.getFlags());
+        input.setCookieMask(dataObject.getCookieMask());
+        input.setContainerName(dataObject.getContainerName());
+        input.setBarrier(dataObject.isBarrier());
+        input.setInstallHw(dataObject.isInstallHw());
+        input.setStrict(dataObject.isStrict());
         // updating the staticflow cache
-        Integer ordinal = staticFlowsOrdinal.get(0);
-        staticFlowsOrdinal.put(0, ++ordinal);
-        staticFlows.put(ordinal, dataObject);
+        /*
+         * Commented out due to problems caused by improper use of
+         * ClusteringServices Integer ordinal = staticFlowsOrdinal.get(0);
+         * staticFlowsOrdinal.put(0, ++ordinal); staticFlows.put(ordinal,
+         * dataObject);
+         */
 
         // We send flow to the sounthbound plugin
         flowService.removeFlow(input.build());
-        updateLocalDatabase((NodeFlow) dataObject, false);
+
+        /*
+         * Commented out due to problems caused by improper use of
+         * ClusteringServices updateLocalDatabase((NodeFlow) dataObject, false);
+         */
     }
 
     /**
@@ -257,33 +267,79 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
         UpdateFlowInputBuilder input = new UpdateFlowInputBuilder();
         UpdatedFlowBuilder updatedflowbuilder = new UpdatedFlowBuilder();
         updatedflowbuilder.fieldsFrom(dataObject);
+        input.setNode(dataObject.getNode());
         input.setUpdatedFlow(updatedflowbuilder.build());
 
         // updating the staticflow cache
-        Integer ordinal = staticFlowsOrdinal.get(0);
-        staticFlowsOrdinal.put(0, ++ordinal);
-        staticFlows.put(ordinal, dataObject);
+        /*
+         * Commented out due to problems caused by improper use of
+         * ClusteringServices. Integer ordinal = staticFlowsOrdinal.get(0);
+         * staticFlowsOrdinal.put(0, ++ordinal); staticFlows.put(ordinal,
+         * dataObject);
+         */
 
         // We send flow to the sounthbound plugin
         flowService.updateFlow(input.build());
-        updateLocalDatabase((NodeFlow) dataObject, true);
+
+        /*
+         * Commented out due to problems caused by improper use of
+         * ClusteringServices. updateLocalDatabase((NodeFlow) dataObject, true);
+         */
     }
 
     @SuppressWarnings("unchecked")
     private void commitToPlugin(internalTransaction transaction) {
-        for (Entry<InstanceIdentifier<?>, Flow> entry : transaction.additions.entrySet()) {
-            System.out.println("Coming add cc in FlowDatacommitHandler");
-            addFlow(entry.getKey(), entry.getValue());
+        Set<Entry<InstanceIdentifier<?>, DataObject>> createdEntries = transaction.getModification()
+                .getCreatedConfigurationData().entrySet();
+
+        /*
+         * This little dance is because updatedEntries contains both created and
+         * modified entries The reason I created a new HashSet is because the
+         * collections we are returned are immutable.
+         */
+        Set<Entry<InstanceIdentifier<?>, DataObject>> updatedEntries = new HashSet<Entry<InstanceIdentifier<?>, DataObject>>();
+        updatedEntries.addAll(transaction.getModification().getUpdatedConfigurationData().entrySet());
+        updatedEntries.removeAll(createdEntries);
+
+        Set<InstanceIdentifier<?>> removeEntriesInstanceIdentifiers = transaction.getModification()
+                .getRemovedConfigurationData();
+        transaction.getModification().getOriginalConfigurationData();
+        for (Entry<InstanceIdentifier<?>, DataObject> entry : createdEntries) {
+            if (entry.getValue() instanceof Flow) {
+                logger.debug("Coming add cc in FlowDatacommitHandler");
+                Flow flow = (Flow) entry.getValue();
+                boolean status = validate(flow);
+                if (!status) {
+                    return;
+                }
+                addFlow(entry.getKey(), (Flow) entry.getValue());
+            }
         }
         for (@SuppressWarnings("unused")
-        Entry<InstanceIdentifier<?>, Flow> entry : transaction.updates.entrySet()) {
-            System.out.println("Coming update cc in FlowDatacommitHandler");
-            updateFlow(entry.getKey(), entry.getValue());
+        Entry<InstanceIdentifier<?>, DataObject> entry : updatedEntries) {
+            if (entry.getValue() instanceof Flow) {
+                logger.debug("Coming update cc in FlowDatacommitHandler");
+                Flow flow = (Flow) entry.getValue();
+                boolean status = validate(flow);
+                if (!status) {
+                    return;
+                }
+                updateFlow(entry.getKey(), (Flow) entry.getValue());
+            }
         }
 
-        for (Entry<InstanceIdentifier<?>, Flow> entry : transaction.removals.entrySet()) {
-            System.out.println("Coming remove cc in FlowDatacommitHandler");
-            removeFlow(entry.getKey(), entry.getValue());
+        for (InstanceIdentifier<?> instanceId : removeEntriesInstanceIdentifiers) {
+            DataObject removeValue = transaction.getModification().getOriginalConfigurationData().get(instanceId);
+            if (removeValue instanceof Flow) {
+                logger.debug("Coming remove cc in FlowDatacommitHandler");
+                Flow flow = (Flow) removeValue;
+                boolean status = validate(flow);
+                if (!status) {
+                    return;
+                }
+                removeFlow(instanceId, (Flow) removeValue);
+
+            }
         }
 
     }
@@ -294,7 +350,7 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
         @Override
         public DataCommitTransaction requestCommit(DataModification<InstanceIdentifier<?>, DataObject> modification) {
             // We should verify transaction
-            System.out.println("Coming in FlowDatacommitHandler");
+            logger.debug("Coming in FlowDatacommitHandler");
             internalTransaction transaction = new internalTransaction(modification);
             transaction.prepareUpdate();
             return transaction;
@@ -327,41 +383,6 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
 
             Set<Entry<InstanceIdentifier<?>, DataObject>> puts = modification.getUpdatedConfigurationData().entrySet();
             for (Entry<InstanceIdentifier<?>, DataObject> entry : puts) {
-
-                // validating the DataObject
-
-                Status status = validate(container, (NodeFlow) entry);
-                if (!status.isSuccess()) {
-                    logger.warn("Invalid Configuration for flow {}. The failure is {}", entry, status.getDescription());
-                    String error = "Invalid Configuration (" + status.getDescription() + ")";
-                    logger.error(error);
-                    return;
-                }
-                // Presence check
-                if (flowEntryExists((NodeFlow) entry)) {
-                    String error = "Entry with this name on specified table already exists";
-                    logger.warn("Entry with this name on specified table already exists: {}", entry);
-                    logger.error(error);
-                    return;
-                }
-                if (originalSwView.containsKey(entry)) {
-                    logger.warn("Operation Rejected: A flow with same match and priority exists on the target node");
-                    logger.trace("Aborting to install {}", entry);
-                    continue;
-                }
-                if (!FRMUtil.validateMatch((NodeFlow) entry)) {
-                    logger.error("Not a valid Match");
-                    return;
-                }
-                if (!FRMUtil.validateInstructions((NodeFlow) entry)) {
-                    logger.error("Not a valid Instruction");
-                    return;
-                }
-                if (entry.getValue() instanceof Flow) {
-                    Flow flow = (Flow) entry.getValue();
-                    preparePutEntry(entry.getKey(), flow);
-                }
-
             }
 
             // removals = modification.getRemovedConfigurationData();
@@ -379,11 +400,9 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
             Flow original = originalSwView.get(key);
             if (original != null) {
                 // It is update for us
-                System.out.println("Coming update  in FlowDatacommitHandler");
                 updates.put(key, flow);
             } else {
                 // It is addition for us
-                System.out.println("Coming add in FlowDatacommitHandler");
                 additions.put(key, flow);
             }
         }
@@ -398,7 +417,7 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
             commitToPlugin(this);
             // We return true if internal transaction is successful.
             // return Rpcs.getRpcResult(true, null, Collections.emptySet());
-            return Rpcs.getRpcResult(true, null, null);
+            return Rpcs.getRpcResult(true, null, Collections.<RpcError> emptySet());
         }
 
         /**
@@ -411,58 +430,15 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
             // NOOP - we did not modified any internal state during
             // requestCommit phase
             // return Rpcs.getRpcResult(true, null, Collections.emptySet());
-            return Rpcs.getRpcResult(true, null, null);
+            return Rpcs.getRpcResult(true, null, Collections.<RpcError> emptySet());
 
         }
 
-        public Status validate(IContainer container, NodeFlow dataObject) {
-
-            // container validation
-            Switch sw = null;
-            Node node = null;
-            String containerName = (container == null) ? GlobalConstants.DEFAULT.toString() : container.getName();
-            ISwitchManager switchManager = (ISwitchManager) ServiceHelper.getInstance(ISwitchManager.class,
-                    containerName, this);
-            // flow Name validation
-            if (dataObject.getFlowName() == null || dataObject.getFlowName().trim().isEmpty()
-                    || !dataObject.getFlowName().matches(NAMEREGEX)) {
-                return new Status(StatusCode.BADREQUEST, "Invalid Flow name");
-            }
-            // Node Validation
-            if (dataObject.getNode() == null) {
-                return new Status(StatusCode.BADREQUEST, "Node is null");
-            }
-
-            if (switchManager != null) {
-                for (Switch device : switchManager.getNetworkDevices()) {
-                    node = (Node) device.getNode();
-                    if (device.getNode().equals(dataObject.getNode())) {
-                        sw = device;
-                        break;
-                    }
-                }
-                if (sw == null) {
-                    return new Status(StatusCode.BADREQUEST, String.format("Node %s not found", node));
-                }
-            } else {
-                logger.debug("switchmanager is not set yet");
-            }
-
-            if (dataObject.getPriority() != null) {
-                if (dataObject.getPriority() < 0 || dataObject.getPriority() > 65535) {
-                    return new Status(StatusCode.BADREQUEST, String.format("priority %s is not in the range 0 - 65535",
-                            dataObject.getPriority()));
-                }
-            }
-
-            return new Status(StatusCode.SUCCESS);
-        }
-
-        private boolean flowEntryExists(NodeFlow config) {
+        private boolean flowEntryExists(Flow flow) {
             // Flow name has to be unique on per table id basis
             for (ConcurrentMap.Entry<FlowKey, Flow> entry : originalSwView.entrySet()) {
-                if (entry.getValue().getFlowName().equals(config.getFlowName())
-                        && entry.getValue().getTableId().equals(config.getTableId())) {
+                if (entry.getValue().getFlowName().equals(flow.getFlowName())
+                        && entry.getValue().getTableId().equals(flow.getTableId())) {
                     return true;
                 }
             }
@@ -470,47 +446,6 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
         }
     }
 
-    final class FlowEventListener implements SalFlowListener {
-
-        List<FlowAdded> addedFlows = new ArrayList<>();
-        List<FlowRemoved> removedFlows = new ArrayList<>();
-        List<FlowUpdated> updatedFlows = new ArrayList<>();
-
-        @Override
-        public void onFlowAdded(FlowAdded notification) {
-            System.out.println("added flow..........................");
-            addedFlows.add(notification);
-        }
-
-        @Override
-        public void onFlowRemoved(FlowRemoved notification) {
-            removedFlows.add(notification);
-        };
-
-        @Override
-        public void onFlowUpdated(FlowUpdated notification) {
-            updatedFlows.add(notification);
-        }
-
-        @Override
-        public void onSwitchFlowRemoved(SwitchFlowRemoved notification) {
-            // TODO
-        }
-
-        @Override
-        public void onNodeErrorNotification(NodeErrorNotification notification) {
-            // TODO Auto-generated method stub
-
-        }
-
-        @Override
-        public void onNodeExperimenterErrorNotification(NodeExperimenterErrorNotification notification) {
-            // TODO Auto-generated method stub
-
-        };
-
-    }
-
     // Commented out DataChangeListene - to be used by Stats
 
     // final class FlowDataListener implements DataChangeListener {
@@ -550,6 +485,60 @@ public class FlowConsumerImpl implements IForwardingRulesManager {
     // }
     // }
 
+    public boolean validate(Flow flow) {
+
+        String msg = ""; // Specific part of warn/error log
+
+        boolean result = true;
+        // flow Name validation
+        if (flow.getFlowName() == null || flow.getFlowName().trim().isEmpty() || !flow.getFlowName().matches(NAMEREGEX)) {
+            msg = "Invalid Flow name";
+            result = false;
+        }
+        // Node Validation
+        if (result == true && flow.getNode() == null) {
+            msg = "Node is null";
+            result = false;
+        }
+
+        // TODO: Validate we are seeking to program a flow against a valid
+        // Node
+
+        if (result == true && flow.getPriority() != null) {
+            if (flow.getPriority() < 0 || flow.getPriority() > 65535) {
+                msg = String.format("priority %s is not in the range 0 - 65535", flow.getPriority());
+                result = false;
+            }
+        }
+
+        // Presence check
+        /*
+         * This is breaking due to some improper use of caches...
+         *
+         * if (flowEntryExists(flow)) { String error =
+         * "Entry with this name on specified table already exists";
+         * logger.warn(
+         * "Entry with this name on specified table already exists: {}" ,
+         * entry); logger.error(error); return; } if
+         * (originalSwView.containsKey(entry)) { logger.warn(
+         * "Operation Rejected: A flow with same match and priority exists on the target node"
+         * ); logger.trace("Aborting to install {}", entry); continue; }
+         */
+        if (!FRMUtil.validateMatch(flow)) {
+            logger.error("Not a valid Match");
+            result = false;
+        }
+        if (!FRMUtil.validateInstructions(flow)) {
+            logger.error("Not a valid Instruction");
+            result = false;
+        }
+        if (result == false) {
+            logger.warn("Invalid Configuration for flow {}. The failure is {}", flow, msg);
+            logger.error("Invalid Configuration ({})", msg);
+        }
+        return result;
+    }
+
     private static void updateLocalDatabase(NodeFlow entry, boolean add) {
 
         updateSwViewes(entry, add);