interfacemanager/interfacemanager-impl/src/main/java/org/opendaylight/genius/interfacemanager/servicebindings/flowbased/config/helpers/FlowBasedEgressServicesConfigUnbindHelper.java

   1 /*
   2  * Copyright (c) 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.genius.interfacemanager.servicebindings.flowbased.config.helpers;
   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.genius.interfacemanager.IfmConstants;
  14 import org.opendaylight.genius.interfacemanager.InterfacemgrProvider;
  15 import org.opendaylight.genius.interfacemanager.commons.InterfaceManagerCommonUtils;
  16 import org.opendaylight.genius.interfacemanager.servicebindings.flowbased.config.factory.FlowBasedServicesConfigRemovable;
  17 import org.opendaylight.genius.interfacemanager.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  18 import org.opendaylight.genius.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.state.Interface.OperStatus;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceModeBase;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.ServicesInfo;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServices;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import java.math.BigInteger;
  31 import java.util.ArrayList;
  32 import java.util.List;
  33
  34 public class FlowBasedEgressServicesConfigUnbindHelper implements FlowBasedServicesConfigRemovable {
  35     private static final Logger LOG = LoggerFactory.getLogger(FlowBasedEgressServicesConfigUnbindHelper.class);
  36
  37     private InterfacemgrProvider interfaceMgrProvider;
  38     private static volatile FlowBasedServicesConfigRemovable flowBasedEgressServicesRemovable;
  39
  40     private FlowBasedEgressServicesConfigUnbindHelper(InterfacemgrProvider interfaceMgrProvider) {
  41         this.interfaceMgrProvider = interfaceMgrProvider;
  42     }
  43
  44     public static void intitializeFlowBasedEgressServicesConfigRemoveHelper(InterfacemgrProvider interfaceMgrProvider) {
  45         if (flowBasedEgressServicesRemovable == null) {
  46             synchronized (FlowBasedEgressServicesConfigUnbindHelper.class) {
  47                 if (flowBasedEgressServicesRemovable == null) {
  48                     flowBasedEgressServicesRemovable = new FlowBasedEgressServicesConfigUnbindHelper(interfaceMgrProvider);
  49                 }
  50             }
  51         }
  52     }
  53
  54     public static FlowBasedServicesConfigRemovable getFlowBasedEgressServicesRemoveHelper() {
  55         if (flowBasedEgressServicesRemovable == null) {
  56             LOG.error("FlowBasedIngressBindHelper`` is not initialized");
  57         }
  58         return flowBasedEgressServicesRemovable;
  59     }
  60
  61     public List<ListenableFuture<Void>> unbindService(InstanceIdentifier<BoundServices> instanceIdentifier,
  62                                                              BoundServices boundServiceOld) {
  63         List<ListenableFuture<Void>> futures = new ArrayList<>();
  64         DataBroker dataBroker = interfaceMgrProvider.getDataBroker();
  65         String interfaceName =
  66                 InstanceIdentifier.keyOf(instanceIdentifier.firstIdentifierOf(ServicesInfo.class)).getInterfaceName();
  67         Class<? extends ServiceModeBase> serviceMode = InstanceIdentifier.keyOf(instanceIdentifier.firstIdentifierOf(ServicesInfo.class)).getServiceMode();
  68
  69         // Get the Parent ServiceInfo
  70         ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(interfaceName, serviceMode, dataBroker);
  71         if (servicesInfo == null) {
  72             LOG.error("Reached Impossible part in the code for bound service: {}", boundServiceOld);
  73             return futures;
  74         }
  75
  76         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState =
  77                 InterfaceManagerCommonUtils.getInterfaceStateFromOperDS(interfaceName, dataBroker);
  78         if (ifState == null || ifState.getOperStatus() == OperStatus.Down) {
  79             LOG.info("Not unbinding Service since operstatus is DOWN for Interface: {}", interfaceName);
  80             return futures;
  81         }
  82         List<BoundServices> boundServices = servicesInfo.getBoundServices();
  83
  84         // Split based on type of interface....
  85         if (ifState.getType().isAssignableFrom(L2vlan.class)) {
  86             return unbindServiceOnVlan(boundServiceOld, boundServices, ifState, dataBroker);
  87         } else if (ifState.getType().isAssignableFrom(Tunnel.class)) {
  88             return unbindServiceOnTunnel(boundServiceOld, boundServices, ifState, dataBroker);
  89         }
  90         return futures;
  91     }
  92
  93     private static List<ListenableFuture<Void>> unbindServiceOnVlan(
  94             BoundServices boundServiceOld,
  95             List<BoundServices> boundServices, org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifaceState,
  96             DataBroker dataBroker) {
  97
  98         List<ListenableFuture<Void>> futures = new ArrayList<>();
  99         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
 100         Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(ifaceState.getName(), dataBroker);
 101         BigInteger dpId = FlowBasedServicesUtils.getDpnIdFromInterface(ifaceState);
 102         if (boundServices.isEmpty()) {
 103             // Remove default entry from Lport Dispatcher Table.
 104             FlowBasedServicesUtils.removeEgressDispatcherFlows(dpId, ifaceState.getName(), boundServiceOld, t, NwConstants.DEFAULT_SERVICE_INDEX);
 105             if (t != null) {
 106                 futures.add(t.submit());
 107             }
 108             return futures;
 109         }
 110         BoundServices[] highLow = FlowBasedServicesUtils.getHighAndLowPriorityService(boundServices, boundServiceOld);
 111         BoundServices low = highLow[0];
 112         BoundServices high = highLow[1];
 113         // This means the one removed was the highest priority service
 114         if (high == null) {
 115             FlowBasedServicesUtils.removeEgressDispatcherFlows(dpId, ifaceState.getName(), boundServiceOld, t, NwConstants.DEFAULT_SERVICE_INDEX);
 116             if (low != null) {
 117                 //delete the lower services flow entry.
 118                 FlowBasedServicesUtils.removeEgressDispatcherFlows(dpId, ifaceState.getName(), low, t, low.getServicePriority());
 119                 BoundServices lower = FlowBasedServicesUtils.getHighAndLowPriorityService(boundServices, low)[0];
 120                 short lowerServiceIndex = (short) ((lower!=null) ? lower.getServicePriority() : low.getServicePriority() + 1);
 121                 FlowBasedServicesUtils.installEgressDispatcherFlows(dpId, low, ifaceState.getName(), t, ifaceState.getIfIndex(), NwConstants.DEFAULT_SERVICE_INDEX, lowerServiceIndex, iface);
 122             }
 123         } else {
 124             FlowBasedServicesUtils.removeEgressDispatcherFlows(dpId, ifaceState.getName(), boundServiceOld, t, boundServiceOld.getServicePriority());
 125             short lowerServiceIndex = (short) ((low!=null) ? low.getServicePriority() : boundServiceOld.getServicePriority() + 1);
 126             BoundServices highest = FlowBasedServicesUtils.getHighestPriorityService(boundServices);
 127             if (high.equals(highest)) {
 128                 FlowBasedServicesUtils.installEgressDispatcherFlows(dpId, high, ifaceState.getName(),t, ifaceState.getIfIndex(), NwConstants.DEFAULT_SERVICE_INDEX, lowerServiceIndex, iface);
 129             } else {
 130                 FlowBasedServicesUtils.installEgressDispatcherFlows(dpId, high, ifaceState.getName(),t, ifaceState.getIfIndex(), high.getServicePriority(), lowerServiceIndex, iface);
 131             }
 132         }
 133         futures.add(t.submit());
 134         return futures;
 135     }
 136
 137     private static List<ListenableFuture<Void>> unbindServiceOnTunnel(
 138             BoundServices boundServiceOld,
 139             List<BoundServices> boundServices, org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState,
 140             DataBroker dataBroker) {
 141         List<ListenableFuture<Void>> futures = new ArrayList<>();
 142
 143         // FIXME : not yet supported
 144         return futures;
 145     }
 146 }