interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/confighelpers/FlowBasedServicesConfigUnbindHelper.java

   1 /*
   2  * Copyright (c) 2015 - 2016 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.confighelpers;
   9
  10 import java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.concurrent.ConcurrentHashMap;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  18 import org.opendaylight.vpnservice.interfacemgr.IfmConstants;
  19 import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
  20 import org.opendaylight.vpnservice.interfacemgr.commons.InterfaceManagerCommonUtils;
  21 import org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  22 import org.opendaylight.vpnservice.mdsalutil.MatchInfo;
  23 import org.opendaylight.vpnservice.mdsalutil.NwConstants;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.Tunnel;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.ServicesInfo;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 import com.google.common.util.concurrent.ListenableFuture;
  37
  38 public class FlowBasedServicesConfigUnbindHelper {
  39     private static final Logger LOG = LoggerFactory.getLogger(FlowBasedServicesConfigUnbindHelper.class);
  40
  41     public static List<ListenableFuture<Void>> unbindService(InstanceIdentifier<BoundServices> instanceIdentifier,
  42                                                              BoundServices boundServiceOld, DataBroker dataBroker) {
  43         List<ListenableFuture<Void>> futures = new ArrayList<>();
  44         String interfaceName =
  45                 InstanceIdentifier.keyOf(instanceIdentifier.firstIdentifierOf(ServicesInfo.class)).getInterfaceName();
  46
  47         // Get the Parent ServiceInfo
  48         ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(interfaceName, dataBroker);
  49         if (servicesInfo == null) {
  50             LOG.error("Reached Impossible part in the code for bound service: {}", boundServiceOld);
  51             return futures;
  52         }
  53
  54         InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
  55         Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
  56         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState =
  57                 InterfaceManagerCommonUtils.getInterfaceStateFromOperDS(interfaceName, dataBroker);
  58         if (ifState == null || ifState.getOperStatus() == OperStatus.Down) {
  59             LOG.info("Not unbinding Service since operstatus is DOWN for Interface: {}", interfaceName);
  60             return futures;
  61         }
  62         List<BoundServices> boundServices = servicesInfo.getBoundServices();
  63
  64         // Split based on type of interface....
  65         if (iface.getType().isAssignableFrom(L2vlan.class)) {
  66             return unbindServiceOnVlan(boundServiceOld, boundServices, iface, ifState.getIfIndex(), dataBroker);
  67         } else if (iface.getType().isAssignableFrom(Tunnel.class)) {
  68            return unbindServiceOnTunnel(boundServiceOld, boundServices, iface, ifState.getIfIndex(), dataBroker);
  69         }
  70         return futures;
  71     }
  72
  73     private static List<ListenableFuture<Void>> unbindServiceOnVlan(
  74             BoundServices boundServiceOld,
  75             List<BoundServices> boundServices, Interface iface, int ifIndex,
  76             DataBroker dataBroker) {
  77
  78         List<ListenableFuture<Void>> futures = new ArrayList<>();
  79         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  80         NodeConnectorId nodeConnectorId = FlowBasedServicesUtils.getNodeConnectorIdFromInterface(iface, dataBroker);
  81         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
  82         if (boundServices.isEmpty()) {
  83             // Remove default entry from Lport Dispatcher Table.
  84             FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), boundServiceOld, t, IfmConstants.DEFAULT_SERVICE_INDEX);
  85             if (t != null) {
  86                 futures.add(t.submit());
  87             }
  88             return futures;
  89         }
  90         BoundServices[] highLow = FlowBasedServicesUtils.getHighAndLowPriorityService(boundServices, boundServiceOld);
  91         BoundServices low = highLow[0];
  92         BoundServices high = highLow[1];
  93         // This means the one removed was the highest priority service
  94         if (high == null) {
  95             LOG.trace("Deleting table entry for service {}, match service index {}", boundServiceOld, IfmConstants.DEFAULT_SERVICE_INDEX);
  96             FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), boundServiceOld, t, IfmConstants.DEFAULT_SERVICE_INDEX);
  97             if (low != null) {
  98                 //delete the lower services flow entry.
  99                 LOG.trace("Deleting table entry for lower service {}, match service index {}", low, low.getServicePriority());
 100                 FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), low, t, low.getServicePriority());
 101                 BoundServices lower = FlowBasedServicesUtils.getHighAndLowPriorityService(boundServices, low)[0];
 102                 short lowerServiceIndex = (short) ((lower!=null) ? lower.getServicePriority() : low.getServicePriority() + 1);
 103                 LOG.trace("Installing new entry for lower service {}, match service index {}, update service index {}", low, IfmConstants.DEFAULT_SERVICE_INDEX, lowerServiceIndex);
 104                 FlowBasedServicesUtils.installLPortDispatcherFlow(dpId, low, iface, t, ifIndex, IfmConstants.DEFAULT_SERVICE_INDEX, lowerServiceIndex);
 105             }
 106         } else {
 107             LOG.trace("Deleting table entry for service {}, match service index {}", boundServiceOld, boundServiceOld.getServicePriority());
 108             FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), boundServiceOld, t, boundServiceOld.getServicePriority());
 109             short lowerServiceIndex = (short) ((low!=null) ? low.getServicePriority() : boundServiceOld.getServicePriority() + 1);
 110             BoundServices highest = FlowBasedServicesUtils.getHighestPriorityService(boundServices);
 111             if (high.equals(highest)) {
 112                 LOG.trace("Update the existing higher service {}, match service index {}, update service index {}", high, IfmConstants.DEFAULT_SERVICE_INDEX, lowerServiceIndex);
 113                 FlowBasedServicesUtils.installLPortDispatcherFlow(dpId, high, iface, t, ifIndex, IfmConstants.DEFAULT_SERVICE_INDEX, lowerServiceIndex);
 114             } else {
 115                 LOG.trace("Update the existing higher service {}, match service index {}, update service index {}", high, high.getServicePriority(), lowerServiceIndex);
 116                 FlowBasedServicesUtils.installLPortDispatcherFlow(dpId, high, iface, t, ifIndex, high.getServicePriority(), lowerServiceIndex);
 117             }
 118         }
 119         futures.add(t.submit());
 120         return futures;
 121     }
 122
 123     private static List<ListenableFuture<Void>> unbindServiceOnTunnel(
 124             BoundServices boundServiceOld,
 125             List<BoundServices> boundServices, Interface iface, int ifIndex,
 126             DataBroker dataBroker) {
 127         List<ListenableFuture<Void>> futures = new ArrayList<>();
 128
 129         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
 130         NodeConnectorId nodeConnectorId = FlowBasedServicesUtils.getNodeConnectorIdFromInterface(iface, dataBroker);
 131         long portNo = Long.parseLong(IfmUtil.getPortNoFromNodeConnectorId(nodeConnectorId));
 132         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
 133
 134         if (boundServices.isEmpty()) {
 135             // Remove entry from Ingress Table.
 136             FlowBasedServicesUtils.removeIngressFlow(iface.getName(), boundServiceOld, dpId, t);
 137             if (t != null) {
 138                 futures.add(t.submit());
 139             }
 140             return futures;
 141         }
 142
 143         Map<Short, BoundServices> tmpServicesMap = new ConcurrentHashMap<>();
 144         short highestPriority = 0xFF;
 145         for (BoundServices boundService : boundServices) {
 146             tmpServicesMap.put(boundService.getServicePriority(), boundService);
 147             if (boundService.getServicePriority() < highestPriority) {
 148                 highestPriority = boundService.getServicePriority();
 149             }
 150         }
 151
 152         if (highestPriority < boundServiceOld.getServicePriority()) {
 153             FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), boundServiceOld, t, boundServiceOld.getServicePriority());
 154             if (t != null) {
 155                 futures.add(t.submit());
 156             }
 157             return futures;
 158         }
 159
 160         List<MatchInfo> matches = null;
 161         matches = FlowBasedServicesUtils.getMatchInfoForTunnelPortAtIngressTable (dpId, portNo, iface);
 162
 163         BoundServices toBeMoved = tmpServicesMap.get(highestPriority);
 164         FlowBasedServicesUtils.removeIngressFlow(iface.getName(), boundServiceOld, dpId, t);
 165         FlowBasedServicesUtils.installInterfaceIngressFlow(dpId, iface, toBeMoved, t,
 166                 matches, ifIndex, NwConstants.VLAN_INTERFACE_INGRESS_TABLE);
 167         FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), toBeMoved, t, toBeMoved.getServicePriority());
 168
 169         if (t != null) {
 170             futures.add(t.submit());
 171         }
 172         return futures;
 173     }
 174
 175 }