Separating renderers into features.
[groupbasedpolicy.git] / groupbasedpolicy / src / main / java / org / opendaylight / groupbasedpolicy / renderer / ofoverlay / flow / GroupTable.java
diff --git a/groupbasedpolicy/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/flow/GroupTable.java b/groupbasedpolicy/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/flow/GroupTable.java
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-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-
-package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
-
-import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
-import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
-import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.PolicyManager.Dirty;
-import org.opendaylight.groupbasedpolicy.resolver.EgKey;
-import org.opendaylight.groupbasedpolicy.resolver.IndexedTenant;
-import org.opendaylight.groupbasedpolicy.resolver.PolicyInfo;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.BucketId;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.Buckets;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.Endpoint;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.EndpointLocation.LocationType;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContext;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.EndpointGroup;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.L2FloodDomain;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.google.common.base.Objects;
-import com.google.common.base.Optional;
-import com.google.common.collect.Ordering;
-
-import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.*;
-
-/**
- * Manage the group tables for handling broadcast/multicast
- * @author readams
- */
-public class GroupTable extends OfTable {
-    private static final Logger LOG =
-            LoggerFactory.getLogger(GroupTable.class);
-
-    public GroupTable(OfTableCtx ctx) {
-        super(ctx);
-    }
-
-    @Override
-    public void update(NodeId nodeId, PolicyInfo policyInfo, Dirty dirty)
-            throws Exception {
-        // there appears to be no way of getting only the existing group
-        // tables unfortunately, so we have to get the whole goddamned node.
-        // Since this is happening concurrently with other things that are
-        // working in subtrees of nodes, we have to do two transactions
-        ReadOnlyTransaction t = ctx.dataBroker.newReadOnlyTransaction();
-        InstanceIdentifier<Node> niid = createNodePath(nodeId);
-        Optional<Node> r =
-                t.read(LogicalDatastoreType.CONFIGURATION, niid).get();
-        if (!r.isPresent()) return;
-        FlowCapableNode fcn = r.get().getAugmentation(FlowCapableNode.class);
-        if (fcn == null) return;
-
-        HashMap<GroupId, GroupCtx> groupMap = new HashMap<>();
-
-        if (fcn.getGroup() != null) {
-            for (Group g : fcn.getGroup()) {
-                GroupCtx gctx = new GroupCtx(g.getGroupId());
-                groupMap.put(g.getGroupId(), gctx);
-
-                Buckets bs = g.getBuckets();
-                if (bs != null && bs.getBucket() != null)
-                for (Bucket b : bs.getBucket()) {
-                    gctx.bucketMap.put(b.getBucketId(), new BucketCtx(b));
-                }
-            }
-        }
-
-        sync(nodeId, policyInfo, dirty, groupMap);
-
-        WriteTransaction wt = ctx.dataBroker.newWriteOnlyTransaction();
-        boolean wrote = syncGroupToStore(wt, nodeId, groupMap);
-        if (wrote)
-            wt.submit().get();
-    }
-
-    protected boolean syncGroupToStore(WriteTransaction wt,
-                                       NodeId nodeId,
-                                       HashMap<GroupId, GroupCtx> groupMap) {
-        boolean wrote = false;
-        for (GroupCtx gctx : groupMap.values()) {
-            InstanceIdentifier<Group> giid =
-                    createGroupPath(nodeId, gctx.groupId);
-            if (!gctx.visited) {
-                // Remove group table
-                wrote = true;
-                wt.delete(LogicalDatastoreType.CONFIGURATION, giid);
-            } else {
-                ArrayList<Bucket> buckets = new ArrayList<>();
-
-                // update group table
-                for (BucketCtx bctx : gctx.bucketMap.values()) {
-                    BucketId bid;
-                    if (bctx.b != null) bid = bctx.b.getBucketId();
-                    else bid = bctx.newb.getBucketId();
-                    InstanceIdentifier<Bucket> biid =
-                            createBucketPath(nodeId,
-                                             gctx.groupId,
-                                             bid);
-                    if (!bctx.visited) {
-                        // remove bucket
-                        wrote = true;
-                        wt.delete(LogicalDatastoreType.CONFIGURATION, biid);
-                    } else if (bctx.b == null) {
-                        // new bucket
-                        buckets.add(bctx.newb);
-                    } else if (!Objects.equal(bctx.newb.getAction(),
-                                              Ordering.from(ActionComparator.INSTANCE)
-                                                  .sortedCopy(bctx.b.getAction()))) {
-                        // update bucket
-                        buckets.add(bctx.newb);
-                    }
-                }
-                if (buckets.size() > 0) {
-                    GroupBuilder gb = new GroupBuilder()
-                        .setGroupId(gctx.groupId)
-                        .setGroupType(GroupTypes.GroupAll)
-                        .setBuckets(new BucketsBuilder()
-                        .setBucket(buckets)
-                        .build());
-                    wrote = true;
-                    wt.merge(LogicalDatastoreType.CONFIGURATION,
-                             giid, gb.build());
-                }
-            }
-        }
-        return wrote;
-    }
-
-    protected void sync(NodeId nodeId, PolicyInfo policyInfo, Dirty dirty,
-                        HashMap<GroupId, GroupCtx> groupMap) throws Exception {
-
-        for (EgKey epg : ctx.epManager.getGroupsForNode(nodeId)) {
-            IndexedTenant it = ctx.policyResolver.getTenant(epg.getTenantId());
-            if (it == null) continue;
-            EndpointGroup eg = it.getEndpointGroup(epg.getEgId());
-            if (eg == null || eg.getNetworkDomain() == null) continue;
-            L2FloodDomain fd = it.resolveL2FloodDomain(eg.getNetworkDomain());
-            if (fd == null) continue;
-
-            int fdId = ctx.policyManager.getContextOrdinal(epg.getTenantId(),
-                                                           fd.getId());
-            GroupId gid = new GroupId(Long.valueOf(fdId));
-            GroupCtx gctx = groupMap.get(gid);
-            if (gctx == null) {
-                groupMap.put(gid, gctx = new GroupCtx(gid));
-            }
-            gctx.visited = true;
-
-            // we'll use the fdId with the high bit set for remote bucket
-            // and just the local port number for local bucket
-            for (NodeId destNode : ctx.epManager.getNodesForGroup(epg)) {
-                if (nodeId.equals(destNode)) continue;
-
-                long bucketId = ctx.policyManager
-                        .getContextOrdinal(destNode.getValue());
-                bucketId |= 1L << 31;
-
-                IpAddress tunDst =
-                        ctx.switchManager.getTunnelIP(destNode);
-                NodeConnectorId tunPort =
-                        ctx.switchManager.getTunnelPort(nodeId);
-                if (tunDst == null || tunPort == null) continue;
-                Action tundstAction = null;
-                if (tunDst.getIpv4Address() != null) {
-                    String nextHop = tunDst.getIpv4Address().getValue();
-                    tundstAction = nxLoadTunIPv4Action(nextHop, true);
-                } else {
-                    LOG.error("IPv6 tunnel destination {} for {} not supported",
-                              tunDst.getIpv6Address().getValue(),
-                              destNode);
-                    continue;
-                }
-
-                BucketBuilder bb = new BucketBuilder()
-                    .setBucketId(new BucketId(Long.valueOf(bucketId)))
-                    .setAction(actionList(tundstAction,
-                                          outputAction(tunPort)));
-                updateBucket(gctx, bb);
-            }
-            for (Endpoint localEp : ctx.epManager.getEPsForNode(nodeId, epg)) {
-                OfOverlayContext ofc =
-                        localEp.getAugmentation(OfOverlayContext.class);
-                if (ofc == null || ofc.getNodeConnectorId() == null ||
-                    (LocationType.External.equals(ofc.getLocationType())))
-                    continue;
-
-                long bucketId;
-                try {
-                    bucketId = getOfPortNum(ofc.getNodeConnectorId());
-                } catch (NumberFormatException e) {
-                    LOG.warn("Could not parse port number {}",
-                             ofc.getNodeConnectorId(), e);
-                    continue;
-                }
-
-                Action output = outputAction(ofc.getNodeConnectorId());
-                BucketBuilder bb = new BucketBuilder()
-                    .setBucketId(new BucketId(Long.valueOf(bucketId)))
-                    .setAction(actionList(output));
-                updateBucket(gctx, bb);
-            }
-        }
-    }
-
-    private static void updateBucket(GroupCtx gctx, BucketBuilder bb) {
-        BucketCtx bctx = gctx.bucketMap.get(bb.getBucketId());
-        if (bctx == null) {
-            gctx.bucketMap.put(bb.getBucketId(),
-                               bctx = new BucketCtx(null));
-        }
-        bctx.visited = true;
-        bctx.newb = bb.build();
-    }
-
-    protected static class BucketCtx {
-        Bucket b;
-        Bucket newb;
-        boolean visited = false;
-
-        public BucketCtx(Bucket b) {
-            super();
-            this.b = b;
-        }
-    }
-
-    protected static class GroupCtx {
-        GroupId groupId;
-        Map<BucketId, BucketCtx> bucketMap = new HashMap<>();
-        boolean visited = false;
-
-        public GroupCtx(GroupId groupId) {
-            super();
-            this.groupId = groupId;
-        }
-    }
-
-}