renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/flow/GroupTable.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. 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
   9 package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow;
  10
  11 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.actionList;
  12 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.createNodePath;
  13 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.getOfPortNum;
  14 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxLoadTunIPv4Action;
  15 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.outputAction;
  16
  17 import java.util.HashSet;
  18 import java.util.Set;
  19 import java.util.concurrent.ExecutionException;
  20
  21 import com.google.common.base.Optional;
  22
  23 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfContext;
  26 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfWriter;
  27 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.OrdinalFactory.EndpointFwdCtxOrdinals;
  28 import org.opendaylight.groupbasedpolicy.resolver.EgKey;
  29 import org.opendaylight.groupbasedpolicy.resolver.PolicyInfo;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.BucketId;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.Endpoint;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.EndpointLocation.LocationType;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContext;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlan;
  42 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 /**
  47  * Manage the group tables for handling broadcast/multicast
  48  */
  49
  50 public class GroupTable extends OfTable {
  51
  52     private static final Logger LOG = LoggerFactory.getLogger(GroupTable.class);
  53
  54     public GroupTable(OfContext ctx) {
  55         super(ctx);
  56     }
  57
  58     FlowCapableNode getFCNodeFromDatastore(NodeId nodeId)
  59             throws ExecutionException, InterruptedException {
  60         FlowCapableNode fcn = null;
  61         ReadOnlyTransaction t = ctx.getDataBroker().newReadOnlyTransaction();
  62         InstanceIdentifier<FlowCapableNode> fcniid = createNodePath(nodeId).builder()
  63                 .augmentation(FlowCapableNode.class).build();
  64
  65         Optional<FlowCapableNode> r = t.read(LogicalDatastoreType.OPERATIONAL, fcniid).get();
  66         if (!r.isPresent()) {
  67             LOG.warn("Node {} is not present", fcniid);
  68             return null;
  69         }
  70         fcn = r.get();
  71         t.close();
  72         return fcn;
  73     }
  74
  75     @Override
  76     public void update(NodeId nodeId, PolicyInfo policyInfo, OfWriter ofWriter) throws Exception {
  77         // there appears to be no way of getting only the existing group
  78         // tables unfortunately, so we have to get the whole goddamned node.
  79         // Since this is happening concurrently with other things that are
  80         // working in subtrees of nodes, we have to do two transactions
  81         FlowCapableNode fcn = getFCNodeFromDatastore(nodeId);
  82         if (fcn == null)
  83             return;
  84
  85         sync(nodeId, policyInfo, ofWriter);
  86     }
  87
  88     public void sync(NodeId nodeId, PolicyInfo policyInfo, OfWriter ofWriter) throws Exception {
  89
  90         for (Endpoint localEp : ctx.getEndpointManager().getEndpointsForNode(nodeId)) {
  91             EndpointFwdCtxOrdinals localEpFwdCtxOrds =
  92                     OrdinalFactory.getEndpointFwdCtxOrdinals(ctx, policyInfo, localEp);
  93             if (localEpFwdCtxOrds == null) {
  94                 LOG.debug("getEndpointFwdCtxOrdinals is null for EP {}", localEp);
  95                 continue;
  96             }
  97
  98             GroupId gid = new GroupId(Long.valueOf(localEpFwdCtxOrds.getFdId()));
  99             if (!ofWriter.groupExists(nodeId, gid.getValue())) {
 100                 LOG.info("createGroup {} {}", nodeId, gid);
 101                 ofWriter.writeGroup(nodeId, gid);
 102             }
 103
 104             for (EgKey epg : ctx.getEndpointManager().getGroupsForNode(nodeId)) {
 105
 106                 // we'll use the fdId with the high bit set for remote bucket
 107                 // and just the local port number for local bucket
 108                 for (NodeId destNode : findPeerNodesForGroup(policyInfo, epg)) {
 109                     if (nodeId.equals(destNode))
 110                         continue;
 111
 112                     if(isFloodDomainOnNode(localEpFwdCtxOrds.getFdId(), destNode, policyInfo)) {
 113                         long bucketId = OrdinalFactory.getContextOrdinal(destNode);
 114                         bucketId |= 1L << 31;
 115
 116                         IpAddress tunDst = ctx.getSwitchManager().getTunnelIP(destNode, TunnelTypeVxlan.class);
 117                         NodeConnectorId tunPort = ctx.getSwitchManager().getTunnelPort(nodeId, TunnelTypeVxlan.class);
 118                         if (tunDst == null || tunPort == null)
 119                             continue;
 120                         Action tundstAction = null;
 121                         if (tunDst.getIpv4Address() != null) {
 122                             String nextHop = tunDst.getIpv4Address().getValue();
 123                             tundstAction = nxLoadTunIPv4Action(nextHop, true);
 124                         } else {
 125                             LOG.error("IPv6 tunnel destination {} for {} not supported", tunDst.getIpv6Address().getValue(),
 126                                     destNode);
 127                             continue;
 128                         }
 129                         BucketBuilder bb = new BucketBuilder().setBucketId(new BucketId(Long.valueOf(bucketId)))
 130                                 .setAction(actionList(tundstAction, outputAction(tunPort)));
 131                         ofWriter.writeBucket(nodeId, gid, bb.build());
 132                     }
 133                 }
 134                 OfOverlayContext ofc = localEp.getAugmentation(OfOverlayContext.class);
 135                 if (ofc == null || ofc.getNodeConnectorId() == null ||
 136                         (LocationType.External.equals(ofc.getLocationType())))
 137                     continue;
 138
 139                 long bucketId;
 140                 try {
 141                     bucketId = getOfPortNum(ofc.getNodeConnectorId());
 142                 } catch (NumberFormatException e) {
 143                     LOG.warn("Could not parse port number {}", ofc.getNodeConnectorId(), e);
 144                     continue;
 145                 }
 146
 147                 Action output = outputAction(ofc.getNodeConnectorId());
 148                 BucketBuilder bb = new BucketBuilder().setBucketId(new BucketId(Long.valueOf(bucketId)))
 149                         .setAction(actionList(output));
 150                 ofWriter.writeBucket(nodeId, gid, bb.build());
 151             }
 152         }
 153     }
 154
 155     /**
 156      * @param policyInfo to read peer groups for a group
 157      * @param sourceEpgKey a key of source group
 158      * @return all the nodes on which endpoints are either in groups that have policy with source
 159      *         group, or are in the source group
 160      */
 161     private Set<NodeId> findPeerNodesForGroup(PolicyInfo policyInfo, EgKey sourceEpgKey) {
 162         Set<NodeId> nodes = new HashSet<NodeId>();
 163         nodes.addAll(ctx.getEndpointManager().getNodesForGroup(sourceEpgKey));
 164         for (EgKey dstEpgs : policyInfo.getPeers(sourceEpgKey)) {
 165             nodes.addAll(ctx.getEndpointManager().getNodesForGroup(dstEpgs));
 166         }
 167         return nodes;
 168     }
 169
 170     private boolean isFloodDomainOnNode(int fdId, NodeId node, PolicyInfo policyInfo) throws Exception {
 171         for (Endpoint ep : ctx.getEndpointManager().getEndpointsForNode(node)) {
 172             int epFdId = OrdinalFactory.getEndpointFwdCtxOrdinals(ctx, policyInfo, ep).getFdId();
 173             if (fdId == epFdId) {
 174                 return true;
 175             }
 176         }
 177         return false;
 178     }
 179 }