renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/node/FlowCapableNodeConnectorListener.java

   1 package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.node;
   2
   3 import static com.google.common.base.Preconditions.checkNotNull;
   4
   5 import java.util.Collections;
   6 import java.util.HashMap;
   7 import java.util.Map;
   8 import java.util.Map.Entry;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  11 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  12 import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
  13 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  14 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.Name;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.Endpoints;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.Endpoint;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContext;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContextBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  31 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  32 import org.opendaylight.yangtools.yang.binding.DataObject;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 import com.google.common.base.Objects;
  38 import com.google.common.base.Optional;
  39 import com.google.common.util.concurrent.Futures;
  40
  41 public class FlowCapableNodeConnectorListener implements DataChangeListener, AutoCloseable {
  42
  43     private static final Logger LOG = LoggerFactory.getLogger(FlowCapableNodeConnectorListener.class);
  44
  45     private final static InstanceIdentifier<FlowCapableNodeConnector> fcNodeConnectorIid = InstanceIdentifier.builder(
  46             Nodes.class)
  47         .child(Node.class)
  48         .child(NodeConnector.class)
  49         .augmentation(FlowCapableNodeConnector.class)
  50         .build();
  51     private final static InstanceIdentifier<Endpoints> endpointsIid = InstanceIdentifier.builder(Endpoints.class)
  52         .build();
  53     private final DataBroker dataProvider;
  54     private final SwitchManager switchManager;
  55     private final ListenerRegistration<DataChangeListener> listenerRegistration;
  56
  57     public FlowCapableNodeConnectorListener(DataBroker dataProvider, SwitchManager switchManager) {
  58         this.dataProvider = checkNotNull(dataProvider);
  59         this.switchManager = checkNotNull(switchManager);
  60         listenerRegistration = dataProvider.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  61                 fcNodeConnectorIid, this, DataChangeScope.BASE);
  62     }
  63
  64     @Override
  65     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  66         ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
  67         Map<Name, Endpoint> epWithOfOverlayAugByPortName = readEpsWithOfOverlayAugByPortName(rwTx);
  68         boolean isDataPutToTx = false;
  69         for (Entry<InstanceIdentifier<?>, DataObject> fcncEntry : change.getCreatedData().entrySet()) {
  70             if (FlowCapableNodeConnector.class.equals(fcncEntry.getKey().getTargetType())) {
  71                 InstanceIdentifier<NodeConnector> ncIid = fcncEntry.getKey().firstIdentifierOf(NodeConnector.class);
  72                 FlowCapableNodeConnector fcnc = (FlowCapableNodeConnector) fcncEntry.getValue();
  73                 LOG.trace(
  74                         "FlowCapableNodeConnector created: NodeId: {} NodeConnectorId: {} FlowCapableNodeConnector: {}",
  75                         ncIid.firstKeyOf(Node.class, NodeKey.class).getId().getValue(),
  76                         ncIid.firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId().getValue(), fcnc);
  77                 switchManager.updateSwitchNodeConnectorConfig(ncIid, fcnc);
  78                 Name portName = getPortName(fcnc);
  79                 boolean updated = updateEpWithNodeConnectorInfo(epWithOfOverlayAugByPortName.get(portName), ncIid, rwTx);
  80                 if (updated == true) {
  81                     isDataPutToTx = true;
  82                 }
  83             }
  84         }
  85         for (Entry<InstanceIdentifier<?>, DataObject> fcncEntry : change.getUpdatedData().entrySet()) {
  86             if (FlowCapableNodeConnector.class.equals(fcncEntry.getKey().getTargetType())) {
  87                 InstanceIdentifier<NodeConnector> ncIid = fcncEntry.getKey().firstIdentifierOf(NodeConnector.class);
  88                 FlowCapableNodeConnector fcnc = (FlowCapableNodeConnector) fcncEntry.getValue();
  89                 LOG.trace(
  90                         "FlowCapableNodeConnector updated: NodeId: {} NodeConnectorId: {} FlowCapableNodeConnector: {}",
  91                         ncIid.firstKeyOf(Node.class, NodeKey.class).getId().getValue(),
  92                         ncIid.firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId().getValue(), fcnc);
  93                 switchManager.updateSwitchNodeConnectorConfig(ncIid, fcnc);
  94                 Name portName = getPortName(fcnc);
  95                 boolean updated = updateEpWithNodeConnectorInfo(epWithOfOverlayAugByPortName.get(portName), ncIid, rwTx);
  96                 if (updated == true) {
  97                     isDataPutToTx = true;
  98                 }
  99                 FlowCapableNodeConnector originalFcnc = (FlowCapableNodeConnector) change.getOriginalData().get(
 100                         fcncEntry.getKey());
 101                 Name portNameFromOriginalFcnc = getPortName(originalFcnc);
 102                 // portname already existed and then was changed
 103                 if (portNameFromOriginalFcnc != null && !Objects.equal(portNameFromOriginalFcnc, portName)) {
 104                     updated = updateEpWithNodeConnectorInfo(epWithOfOverlayAugByPortName.get(portNameFromOriginalFcnc),
 105                             null, rwTx);
 106                     if (updated == true) {
 107                         isDataPutToTx = true;
 108                     }
 109                 }
 110             }
 111         }
 112         for (InstanceIdentifier<?> fcncIid : change.getRemovedPaths()) {
 113             if (FlowCapableNodeConnector.class.equals(fcncIid.getTargetType())) {
 114                 InstanceIdentifier<NodeConnector> ncIid = fcncIid.firstIdentifierOf(NodeConnector.class);
 115                 FlowCapableNodeConnector originalFcnc = (FlowCapableNodeConnector) change.getOriginalData()
 116                     .get(fcncIid);
 117                 LOG.trace("FlowCapableNodeConnector removed: NodeId: {} NodeConnectorId: {}",
 118                         ncIid.firstKeyOf(Node.class, NodeKey.class).getId().getValue(),
 119                         ncIid.firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId().getValue());
 120                 switchManager.updateSwitchNodeConnectorConfig(ncIid, null);
 121                 Name portNameFromOriginalFcnc = getPortName(originalFcnc);
 122                 boolean updated = updateEpWithNodeConnectorInfo(
 123                         epWithOfOverlayAugByPortName.get(portNameFromOriginalFcnc), null, rwTx);
 124                 if (updated == true) {
 125                     isDataPutToTx = true;
 126                 }
 127             }
 128         }
 129         if (isDataPutToTx) {
 130             rwTx.submit();
 131         } else {
 132             rwTx.cancel();
 133         }
 134     }
 135
 136     private Map<Name, Endpoint> readEpsWithOfOverlayAugByPortName(ReadTransaction rTx) {
 137         Optional<Endpoints> potentialEps = Futures.getUnchecked(rTx.read(LogicalDatastoreType.OPERATIONAL, endpointsIid));
 138         if (!potentialEps.isPresent() || potentialEps.get().getEndpoint() == null) {
 139             return Collections.emptyMap();
 140         }
 141         Map<Name, Endpoint> epsByPortName = new HashMap<>();
 142         for (Endpoint ep : potentialEps.get().getEndpoint()) {
 143             OfOverlayContext ofOverlayEp = ep.getAugmentation(OfOverlayContext.class);
 144             if (ofOverlayEp != null && ofOverlayEp.getPortName() != null) {
 145                 epsByPortName.put(ofOverlayEp.getPortName(), ep);
 146             }
 147         }
 148         return epsByPortName;
 149     }
 150
 151     private Name getPortName(FlowCapableNodeConnector fcnc) {
 152         if (fcnc == null || fcnc.getName() == null) {
 153             return null;
 154         }
 155         return new Name(fcnc.getName());
 156     }
 157
 158     /**
 159      * @return {@code true} if data was put to the transaction; {@code false} otherwise
 160      */
 161     private boolean updateEpWithNodeConnectorInfo(Endpoint epWithOfOverlayAug, InstanceIdentifier<NodeConnector> ncIid,
 162             WriteTransaction tx) {
 163         if (epWithOfOverlayAug == null) {
 164             return false;
 165         }
 166         OfOverlayContext oldOfOverlayAug = epWithOfOverlayAug.getAugmentation(OfOverlayContext.class);
 167         OfOverlayContextBuilder newOfOverlayAug = new OfOverlayContextBuilder(oldOfOverlayAug);
 168         if (ncIid == null && oldOfOverlayAug.getNodeConnectorId() == null) {
 169             return false;
 170         }
 171         if (ncIid != null) {
 172             NodeConnectorId ncId = ncIid.firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId();
 173             if (ncId.equals(oldOfOverlayAug.getNodeConnectorId())) {
 174                 return false;
 175             }
 176             NodeId nodeId = ncIid.firstKeyOf(Node.class, NodeKey.class).getId();
 177             newOfOverlayAug.setNodeId(nodeId);
 178             newOfOverlayAug.setNodeConnectorId(ncId);
 179         }
 180         InstanceIdentifier<OfOverlayContext> epOfOverlayAugIid = InstanceIdentifier.builder(Endpoints.class)
 181             .child(Endpoint.class, epWithOfOverlayAug.getKey())
 182             .augmentation(OfOverlayContext.class)
 183             .build();
 184         tx.put(LogicalDatastoreType.OPERATIONAL, epOfOverlayAugIid, newOfOverlayAug.build());
 185         return true;
 186     }
 187
 188     @Override
 189     public void close() throws Exception {
 190         if (listenerRegistration != null) {
 191             listenerRegistration.close();
 192         }
 193     }
 194
 195 }