hwvtepsouthbound/hwvtepsouthbound-impl/src/main/java/org/opendaylight/ovsdb/hwvtepsouthbound/transact/PhysicalSwitchRemoveCommand.java

   1 /*
   2  * Copyright © 2015, 2017 China Telecom Beijing Research Institute 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.ovsdb.hwvtepsouthbound.transact;
   9
  10 import static org.opendaylight.ovsdb.lib.operations.Operations.op;
  11
  12 import java.util.Collection;
  13 import java.util.Collections;
  14 import java.util.HashMap;
  15 import java.util.Map;
  16 import java.util.Map.Entry;
  17 import java.util.Optional;
  18 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  19 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  20 import org.opendaylight.ovsdb.lib.notation.Mutator;
  21 import org.opendaylight.ovsdb.lib.notation.UUID;
  22 import org.opendaylight.ovsdb.lib.operations.TransactionBuilder;
  23 import org.opendaylight.ovsdb.schema.hardwarevtep.Global;
  24 import org.opendaylight.ovsdb.schema.hardwarevtep.PhysicalSwitch;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.PhysicalSwitchAugmentation;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public class PhysicalSwitchRemoveCommand extends AbstractTransactCommand {
  32     private static final Logger LOG = LoggerFactory.getLogger(PhysicalSwitchRemoveCommand.class);
  33
  34     public PhysicalSwitchRemoveCommand(final HwvtepOperationalState state,
  35             final Collection<DataTreeModification<Node>> changes) {
  36         super(state, changes);
  37     }
  38
  39     @Override
  40     public void execute(final TransactionBuilder transaction) {
  41         Map<InstanceIdentifier<Node>, PhysicalSwitchAugmentation> removeds =
  42                 extractRemovedSwitches(getChanges(),PhysicalSwitchAugmentation.class);
  43         if (!removeds.isEmpty()) {
  44             for (Entry<InstanceIdentifier<Node>, PhysicalSwitchAugmentation> removed:
  45                 removeds.entrySet()) {
  46                 removePhysicalSwitch(transaction,  removed.getKey(), removed.getValue());
  47             }
  48         }
  49     }
  50
  51     private void removePhysicalSwitch(final TransactionBuilder transaction,
  52             final InstanceIdentifier<Node> iid, final PhysicalSwitchAugmentation physicalSwitchAugmentation) {
  53         LOG.debug("Removing a physical switch named: {}", physicalSwitchAugmentation.getHwvtepNodeName().getValue());
  54         Optional<PhysicalSwitchAugmentation> operationalPhysicalSwitchOptional =
  55                 getOperationalState().getPhysicalSwitchAugmentation(iid);
  56         PhysicalSwitch physicalSwitch = transaction.getTypedRowSchema(PhysicalSwitch.class);
  57         if (operationalPhysicalSwitchOptional.isPresent()
  58                 && operationalPhysicalSwitchOptional.get().getPhysicalSwitchUuid() != null) {
  59             UUID physicalSwitchUuid = new UUID(operationalPhysicalSwitchOptional.get()
  60                     .getPhysicalSwitchUuid().getValue());
  61             Global global = transaction.getTypedRowSchema(Global.class);
  62             transaction.add(op.delete(physicalSwitch.getSchema())
  63                     .where(physicalSwitch.getUuidColumn().getSchema().opEqual(physicalSwitchUuid)).build());
  64             transaction.add(op.comment("Physical Switch: Deleting "
  65                     + physicalSwitchAugmentation.getHwvtepNodeName().getValue()));
  66             transaction.add(op.mutate(global.getSchema())
  67                     .addMutation(global.getSwitchesColumn().getSchema(), Mutator.DELETE,
  68                             Collections.singleton(physicalSwitchUuid)));
  69             transaction.add(op.comment("Global: Mutating " + physicalSwitchAugmentation.getHwvtepNodeName().getValue()
  70                     + " " + physicalSwitchUuid));
  71         } else {
  72             LOG.warn("Unable to delete physical switch {} because it was not found in the operational store",
  73                     physicalSwitchAugmentation.getHwvtepNodeName().getValue());
  74         }
  75     }
  76
  77     private static Map<InstanceIdentifier<Node>, PhysicalSwitchAugmentation> extractRemovedSwitches(
  78             final Collection<DataTreeModification<Node>> changes, final Class<PhysicalSwitchAugmentation> class1) {
  79         Map<InstanceIdentifier<Node>, PhysicalSwitchAugmentation> result = new HashMap<>();
  80         if (changes != null && !changes.isEmpty()) {
  81             for (DataTreeModification<Node> change : changes) {
  82                 final InstanceIdentifier<Node> key = change.getRootPath().getRootIdentifier();
  83                 final DataObjectModification<Node> mod = change.getRootNode();
  84                 Node removed = TransactUtils.getRemoved(mod);
  85                 if (removed != null) {
  86                     PhysicalSwitchAugmentation physicalSwitch =
  87                             removed.augmentation(PhysicalSwitchAugmentation.class);
  88                     if (physicalSwitch != null) {
  89                         result.put(key, physicalSwitch);
  90                     }
  91                 }
  92             }
  93         }
  94         return result;
  95     }
  96 }