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

   1 /*
   2  * Copyright (c) 2015 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 com.google.common.util.concurrent.ListenableFuture;
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  13 import org.opendaylight.vpnservice.interfacemgr.IfmConstants;
  14 import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
  15 import org.opendaylight.vpnservice.interfacemgr.commons.InterfaceManagerCommonUtils;
  16 import org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  17 import org.opendaylight.vpnservice.mdsalutil.MatchInfo;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.Tunnel;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.ServicesInfo;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfL2vlan;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import java.math.BigInteger;
  32 import java.util.ArrayList;
  33 import java.util.List;
  34 import java.util.Map;
  35 import java.util.concurrent.ConcurrentHashMap;
  36
  37 public class FlowBasedServicesConfigUnbindHelper {
  38     private static final Logger LOG = LoggerFactory.getLogger(FlowBasedServicesConfigUnbindHelper.class);
  39
  40     public static List<ListenableFuture<Void>> unbindService(InstanceIdentifier<BoundServices> instanceIdentifier,
  41                                                              BoundServices boundServiceOld, DataBroker dataBroker) {
  42         List<ListenableFuture<Void>> futures = new ArrayList<>();
  43         WriteTransaction t = null;
  44
  45         String interfaceName =
  46                 InstanceIdentifier.keyOf(instanceIdentifier.firstIdentifierOf(ServicesInfo.class)).getInterfaceName();
  47         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState =
  48                 InterfaceManagerCommonUtils.getInterfaceStateFromOperDS(interfaceName, dataBroker);
  49         if (ifState == null || ifState.getOperStatus() == OperStatus.Down) {
  50             LOG.info("Not unbinding Service since operstatus is {} for Interface: {}",
  51                     ifState.getOperStatus(), interfaceName);
  52             return futures;
  53         }
  54
  55         // Get the Parent ServiceInfo
  56         ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(interfaceName, dataBroker);
  57         if (servicesInfo == null) {
  58             LOG.error("Reached Impossible part in the code for bound service: {}", boundServiceOld);
  59             return futures;
  60         }
  61
  62         InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
  63         Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
  64         NodeConnectorId nodeConnectorId = FlowBasedServicesUtils.getNodeConnectorIdFromInterface(iface, dataBroker);
  65         long portNo = Long.parseLong(IfmUtil.getPortNoFromNodeConnectorId(nodeConnectorId));
  66         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
  67         Long lportTag = FlowBasedServicesUtils.getLPortTag(iface, dataBroker);
  68         int vlanId = 0;
  69         if (iface.getType().isAssignableFrom(L2vlan.class)) {
  70             vlanId = iface.getAugmentation(IfL2vlan.class).getVlanId().getValue();
  71         }
  72         List<BoundServices> boundServices = servicesInfo.getBoundServices();
  73         if (boundServices.isEmpty()) {
  74             // Remove entry from Ingress Table.
  75             FlowBasedServicesUtils.removeIngressFlow(iface, boundServiceOld, dpId, dataBroker, t);
  76             if (t != null) {
  77                 futures.add(t.submit());
  78             }
  79             return futures;
  80         }
  81
  82         Map<Short, BoundServices> tmpServicesMap = new ConcurrentHashMap<>();
  83         short highestPriority = 0xFF;
  84         for (BoundServices boundService : boundServices) {
  85             tmpServicesMap.put(boundService.getServicePriority(), boundService);
  86             if (boundService.getServicePriority() < highestPriority) {
  87                 highestPriority = boundService.getServicePriority();
  88             }
  89         }
  90
  91         if (highestPriority < boundServiceOld.getServicePriority()) {
  92             FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface, boundServiceOld, dataBroker, t);
  93             if (t != null) {
  94                 futures.add(t.submit());
  95             }
  96             return futures;
  97         }
  98
  99         List<MatchInfo> matches = null;
 100         if (iface.getType().isAssignableFrom(L2vlan.class)) {
 101             matches = FlowBasedServicesUtils.getMatchInfoForVlanPortAtIngressTable(dpId, portNo, vlanId);
 102         } else if (iface.getType().isAssignableFrom(Tunnel.class)){
 103             matches = FlowBasedServicesUtils.getMatchInfoForTunnelPortAtIngressTable (dpId, portNo, iface);
 104         }
 105
 106         BoundServices toBeMoved = tmpServicesMap.get(highestPriority);
 107         FlowBasedServicesUtils.removeIngressFlow(iface, boundServiceOld, dpId, dataBroker, t);
 108         FlowBasedServicesUtils.installInterfaceIngressFlow(dpId, vlanId, toBeMoved, dataBroker, t,
 109                 matches, lportTag.intValue(), IfmConstants.VLAN_INTERFACE_INGRESS_TABLE);
 110         FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface, toBeMoved, dataBroker, t);
 111
 112         if (t != null) {
 113             futures.add(t.submit());
 114         }
 115         return futures;
 116     }
 117 }