Java tutorial
/* * 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 static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.addNxTunIdMatch; import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.applyActionIns; import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.ethernetMatch; import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.gotoTableIns; import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.instructions; import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxLoadRegAction; import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxLoadTunIdAction; import java.math.BigInteger; import java.util.Collections; import java.util.HashSet; import java.util.Set; import org.opendaylight.groupbasedpolicy.dto.EgKey; import org.opendaylight.groupbasedpolicy.dto.IndexedTenant; import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfContext; import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfWriter; import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.endpoint.EndpointManager; import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.OrdinalFactory.EndpointFwdCtxOrdinals; import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action; import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId; import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow; import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match; import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.EndpointGroupId; import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.Endpoint; import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContext; 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.openflowjava.nx.match.rev140421.NxmNxReg0; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg1; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg4; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg5; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg6; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlan; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.common.collect.Sets; /** * Manage the table that assigns source endpoint group, bridge domain, and * router domain to registers to be used by other tables. */ public class SourceMapper extends FlowTable { protected static final Logger LOG = LoggerFactory.getLogger(SourceMapper.class); // TODO Li alagalah Improve UT coverage for this class. public static short TABLE_ID; public SourceMapper(OfContext ctx, short tableId) { super(ctx); TABLE_ID = tableId; } @Override public short getTableId() { return TABLE_ID; } @Override public void sync(NodeId nodeId, OfWriter ofWriter) throws Exception { ofWriter.writeFlow(nodeId, TABLE_ID, dropFlow(Integer.valueOf(1), null, TABLE_ID)); // Handle case where packets from from External for (Endpoint ep : ctx.getEndpointManager().getEndpointsForNode(nodeId)) { IndexedTenant tenant = ctx.getTenant(ep.getTenant()); if (tenant == null) continue; EndpointFwdCtxOrdinals epFwdCtxOrds = OrdinalFactory.getEndpointFwdCtxOrdinals(ctx, ep); if (epFwdCtxOrds == null) { LOG.debug("getEndpointFwdCtxOrdinals is null for EP {}", ep); continue; } createRemoteTunnels(ofWriter, nodeId, ep, epFwdCtxOrds); if (ep.getTenant() == null || (ep.getEndpointGroup() == null && ep.getEndpointGroups() == null)) { continue; } OfOverlayContext ofc = ep.getAugmentation(OfOverlayContext.class); if (ofc != null && ofc.getNodeConnectorId() != null && (EndpointManager.isInternal(ep, ctx.getTenant(ep.getTenant()).getExternalImplicitGroups()))) { /** * Sync the local EP information. */ syncEP(ofWriter, nodeId, ep, ofc.getNodeConnectorId(), epFwdCtxOrds); } } } private void createRemoteTunnels(OfWriter ofWriter, NodeId nodeId, Endpoint ep, EndpointFwdCtxOrdinals epFwdCtxOrds) throws Exception { Set<EgKey> epgs = new HashSet<>(); // Get EPGs and add to Set to remove duplicates // TODO alagalah Li: test EndpointManager.getEgKeys if (ep.getEndpointGroup() != null) { epgs.add(new EgKey(ep.getTenant(), ep.getEndpointGroup())); } if (ep.getEndpointGroups() != null) { for (EndpointGroupId epgId : ep.getEndpointGroups()) { epgs.add(new EgKey(ep.getTenant(), epgId)); } } // Create tunnels on remote Nodes that may talk to us. for (EgKey epg : epgs) { Set<EgKey> peers = Sets.union(Collections.singleton(epg), ctx.getCurrentPolicy().getPeers(epg)); for (EgKey peer : peers) { for (NodeId remoteNodeId : ctx.getEndpointManager().getNodesForGroup(peer)) { // Please do not check for remote v local nodeID, we need local to local tunnels // in the case of chaining - The Great Dr Sunal. NodeConnectorId tunPort = ctx.getSwitchManager().getTunnelPort(remoteNodeId, TunnelTypeVxlan.class); if (tunPort == null) { LOG.trace("No tunnel port for tunnel in SourceMapper between local:{} and remote:{}", nodeId.getValue(), remoteNodeId.getValue()); continue; } ofWriter.writeFlow(remoteNodeId, TABLE_ID, createTunnelFlow(tunPort, epFwdCtxOrds)); ofWriter.writeFlow(remoteNodeId, TABLE_ID, createBroadcastFlow(tunPort, epFwdCtxOrds)); } } } } private Flow createBroadcastFlow(NodeConnectorId tunPort, EndpointFwdCtxOrdinals epFwdCtxOrds) { int fdId = epFwdCtxOrds.getFdId(); MatchBuilder mb = new MatchBuilder().setInPort(tunPort); addNxTunIdMatch(mb, fdId); // set condition group register to all ones to // bypass // policy enforcement /* * TODO: This breaks distributed policy enforcement * especially wrt multi-action. BAD. Must be addressed * (this is why we can't have nice things). * This can be fixed with new tunnelId ordinal in * Ordinal Factory. */ Action fdReg = nxLoadRegAction(NxmNxReg5.class, BigInteger.valueOf(fdId)); Match match = mb.build(); FlowId flowid = FlowIdUtils.newFlowId(TABLE_ID, "tunnelFdId", match); FlowBuilder flowb = base().setId(flowid).setPriority(Integer.valueOf(150)).setMatch(match) .setInstructions(instructions(applyActionIns(fdReg), gotoTableIns(ctx.getPolicyManager().getTABLEID_DESTINATION_MAPPER()))); return flowb.build(); } private Flow createTunnelFlow(NodeConnectorId tunPort, EndpointFwdCtxOrdinals epFwdCtxOrds) { // ... this is a remote node. int egId = epFwdCtxOrds.getEpgId(); int bdId = epFwdCtxOrds.getBdId(); int fdId = epFwdCtxOrds.getFdId(); int l3Id = epFwdCtxOrds.getL3Id(); int tunnelId = epFwdCtxOrds.getTunnelId(); MatchBuilder mb = new MatchBuilder().setInPort(tunPort); addNxTunIdMatch(mb, tunnelId); Action segReg = nxLoadRegAction(NxmNxReg0.class, BigInteger.valueOf(egId)); // set condition group register to all ones to // bypass // policy enforcement /* * TODO: This breaks distributed policy enforcement * especially wrt multi-action. BAD. Must be addressed * (this is why we can't have nice things). * This can be fixed with new tunnelId ordinal in * Ordinal Factory. */ Action scgReg = nxLoadRegAction(NxmNxReg1.class, BigInteger.valueOf(0xffffff)); Action bdReg = nxLoadRegAction(NxmNxReg4.class, BigInteger.valueOf(bdId)); Action fdReg = nxLoadRegAction(NxmNxReg5.class, BigInteger.valueOf(fdId)); Action vrfReg = nxLoadRegAction(NxmNxReg6.class, BigInteger.valueOf(l3Id)); Match match = mb.build(); FlowId flowid = FlowIdUtils.newFlowId(TABLE_ID, "tunnel", match); FlowBuilder flowb = base().setId(flowid).setPriority(Integer.valueOf(150)).setMatch(match) .setInstructions(instructions(applyActionIns(segReg, scgReg, bdReg, fdReg, vrfReg), gotoTableIns(ctx.getPolicyManager().getTABLEID_DESTINATION_MAPPER()))); return flowb.build(); } private void syncEP(OfWriter ofWriter, NodeId nodeId, Endpoint ep, NodeConnectorId ncId, EndpointFwdCtxOrdinals epFwdCtxOrds) throws Exception { // TODO alagalah Li/Be: We should also match on EndpointL3 with the appropriate // network containment. This would solve a lot of problems and prepare for EndpointL3 RPC. int egId = epFwdCtxOrds.getEpgId(); int bdId = epFwdCtxOrds.getBdId(); int fdId = epFwdCtxOrds.getFdId(); int l3Id = epFwdCtxOrds.getL3Id(); int cgId = epFwdCtxOrds.getCgId(); int tunnelId = epFwdCtxOrds.getTunnelId(); Action segReg = nxLoadRegAction(NxmNxReg0.class, BigInteger.valueOf(egId)); Action scgReg = nxLoadRegAction(NxmNxReg1.class, BigInteger.valueOf(cgId)); Action bdReg = nxLoadRegAction(NxmNxReg4.class, BigInteger.valueOf(bdId)); Action fdReg = nxLoadRegAction(NxmNxReg5.class, BigInteger.valueOf(fdId)); Action vrfReg = nxLoadRegAction(NxmNxReg6.class, BigInteger.valueOf(l3Id)); Action tunIdAction = nxLoadTunIdAction(BigInteger.valueOf(tunnelId), false); Match match = new MatchBuilder().setEthernetMatch(ethernetMatch(ep.getMacAddress(), null, null)) .setInPort(ncId).build(); FlowId flowid = FlowIdUtils.newFlowId(TABLE_ID, "ep", match); FlowBuilder flowb = base().setPriority(Integer.valueOf(100)).setId(flowid).setMatch(match) .setInstructions(instructions(applyActionIns(segReg, scgReg, bdReg, fdReg, vrfReg, tunIdAction), gotoTableIns(ctx.getPolicyManager().getTABLEID_DESTINATION_MAPPER()))); ofWriter.writeFlow(nodeId, TABLE_ID, flowb.build()); } }