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