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[vpnservice.git] / interfacemgr / interfacemgr-impl / src / main / java / org / opendaylight / vpnservice / interfacemgr / servicebindings / flowbased / confighelpers / FlowBasedServicesConfigBindHelper.java
diff --git a/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/confighelpers/FlowBasedServicesConfigBindHelper.java b/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/confighelpers/FlowBasedServicesConfigBindHelper.java
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+/*
+ * Copyright (c) 2015 Ericsson India Global Services Pvt Ltd. 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.vpnservice.interfacemgr.servicebindings.flowbased.confighelpers;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
+import org.opendaylight.vpnservice.interfacemgr.IfmConstants;
+import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
+import org.opendaylight.vpnservice.interfacemgr.commons.InterfaceManagerCommonUtils;
+import org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
+import org.opendaylight.vpnservice.mdsalutil.MatchInfo;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.Tunnel;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.ServicesInfo;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfL2vlan;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class FlowBasedServicesConfigBindHelper {
+    private static final Logger LOG = LoggerFactory.getLogger(FlowBasedServicesConfigBindHelper.class);
+
+    public static List<ListenableFuture<Void>> bindService(InstanceIdentifier<BoundServices> instanceIdentifier,
+                                                           BoundServices boundServiceNew, DataBroker dataBroker) {
+        List<ListenableFuture<Void>> futures = new ArrayList<>();
+        WriteTransaction t = null;
+        String interfaceName =
+                InstanceIdentifier.keyOf(instanceIdentifier.firstIdentifierOf(ServicesInfo.class)).getInterfaceName();
+
+        org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState =
+                InterfaceManagerCommonUtils.getInterfaceStateFromOperDS(interfaceName, dataBroker);
+        if (ifState == null || ifState.getOperStatus() == OperStatus.Down) {
+            LOG.info("Not Binding Service since for Interface: {}", interfaceName);
+            return futures;
+        }
+
+        // Get the Parent ServiceInfo
+        ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(interfaceName, dataBroker);
+        if (servicesInfo == null) {
+            LOG.error("Reached Impossible part 1 in the code during bind service for: {}", boundServiceNew);
+            return futures;
+        }
+
+        InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
+        Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
+
+        List<BoundServices> allServices = servicesInfo.getBoundServices();
+        if (allServices.isEmpty()) {
+            LOG.error("Reached Impossible part 2 in the code during bind service for: {}", boundServiceNew);
+            return futures;
+        }
+
+        NodeConnectorId nodeConnectorId = FlowBasedServicesUtils.getNodeConnectorIdFromInterface(iface, dataBroker);
+        long portNo = Long.parseLong(IfmUtil.getPortNoFromNodeConnectorId(nodeConnectorId));
+        BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
+
+        Long lportTag = FlowBasedServicesUtils.getLPortTag(iface, dataBroker);
+        if (allServices.size() == 1) {
+            // If only one service present, install instructions in table 0.
+            int vlanId = 0;
+            List<MatchInfo> matches = null;
+            if (iface.getType().isAssignableFrom(L2vlan.class)) {
+                vlanId = iface.getAugmentation(IfL2vlan.class).getVlanId().getValue();
+                matches = FlowBasedServicesUtils.getMatchInfoForVlanPortAtIngressTable(dpId, portNo, vlanId);
+            } else if (iface.getType().isAssignableFrom(Tunnel.class)){
+                matches = FlowBasedServicesUtils.getMatchInfoForTunnelPortAtIngressTable (dpId, portNo, iface);
+            }
+
+            if (matches != null) {
+                FlowBasedServicesUtils.installInterfaceIngressFlow(dpId, vlanId, boundServiceNew,
+                        dataBroker, t, matches, lportTag.intValue(), IfmConstants.VLAN_INTERFACE_INGRESS_TABLE);
+            }
+
+            if (t != null) {
+                futures.add(t.submit());
+            }
+            return futures;
+        }
+
+        boolean isCurrentServiceHighestPriority = true;
+        Map<Short, BoundServices> tmpServicesMap = new ConcurrentHashMap<>();
+        short highestPriority = 0xFF;
+        for (BoundServices boundService : allServices) {
+            if (boundService.getServicePriority() < boundServiceNew.getServicePriority()) {
+                isCurrentServiceHighestPriority = false;
+                break;
+            }
+            if (!boundService.equals(boundServiceNew)) {
+                tmpServicesMap.put(boundService.getServicePriority(), boundService);
+                if (boundService.getServicePriority() < highestPriority) {
+                    highestPriority = boundService.getServicePriority();
+                }
+            }
+            LOG.error("Reached unexpected part 1 of the code when handling bind service for interface: {}, when binding" +
+                    "service: {}", iface, boundServiceNew);
+        }
+
+        if (!isCurrentServiceHighestPriority) {
+            FlowBasedServicesUtils.installLPortDispatcherFlow(dpId, boundServiceNew, iface, dataBroker,  t,
+                    lportTag.intValue());
+        } else {
+            BoundServices serviceToReplace = tmpServicesMap.get(highestPriority);
+            FlowBasedServicesUtils.installLPortDispatcherFlow(dpId, serviceToReplace, iface, dataBroker, t,
+                    lportTag.intValue());
+            int vlanId = 0;
+            List<MatchInfo> matches = null;
+            if (iface.getType().isAssignableFrom(L2vlan.class)) {
+                vlanId = iface.getAugmentation(IfL2vlan.class).getVlanId().getValue();
+                matches = FlowBasedServicesUtils.getMatchInfoForVlanPortAtIngressTable(dpId, portNo, vlanId);
+            } else if (iface.getType().isAssignableFrom(Tunnel.class)){
+                matches = FlowBasedServicesUtils.getMatchInfoForTunnelPortAtIngressTable (dpId, portNo, iface);
+            }
+
+            if (matches != null) {
+                FlowBasedServicesUtils.removeIngressFlow(iface, serviceToReplace, dpId, dataBroker, t);
+                FlowBasedServicesUtils.installInterfaceIngressFlow(dpId, vlanId, boundServiceNew, dataBroker, t,
+                        matches, lportTag.intValue(), IfmConstants.VLAN_INTERFACE_INGRESS_TABLE);
+            }
+        }
+
+        if (t != null) {
+            futures.add(t.submit());
+        }
+        return futures;
+    }
+}
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