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