Java tutorial
/* * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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.vpnservice.dhcpservice; import java.math.BigInteger; import java.util.ArrayList; import java.util.Collection; import java.util.HashSet; import java.util.LinkedList; import java.util.List; import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java.util.concurrent.ExecutionException; import java.util.concurrent.Future; import org.apache.commons.lang3.tuple.ImmutablePair; import org.apache.commons.lang3.tuple.Pair; import org.opendaylight.controller.md.sal.binding.api.DataBroker; import org.opendaylight.controller.md.sal.binding.api.WriteTransaction; import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService; import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType; import org.opendaylight.vpnservice.dhcpservice.api.DHCPMConstants; import org.opendaylight.vpnservice.mdsalutil.MDSALDataStoreUtils; import org.opendaylight.vpnservice.mdsalutil.MDSALUtil; import org.opendaylight.vpnservice.mdsalutil.NwConstants; import org.opendaylight.vpnservice.mdsalutil.interfaces.IMdsalApiManager; import org.opendaylight.vpnservice.neutronvpn.api.l2gw.L2GatewayDevice; import org.opendaylight.vpnservice.neutronvpn.api.l2gw.utils.L2GatewayCacheUtils; import org.opendaylight.vpnservice.neutronvpn.api.utils.NeutronUtils; import org.opendaylight.vpnservice.utils.clustering.ClusteringUtils; import org.opendaylight.vpnservice.utils.hwvtep.HwvtepSouthboundConstants; import org.opendaylight.vpnservice.utils.hwvtep.HwvtepSouthboundUtils; import org.opendaylight.vpnservice.utils.hwvtep.HwvtepUtils; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid; import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.Ports; import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port; import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepLogicalSwitchRef; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepNodeName; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepPhysicalLocatorAugmentation; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepPhysicalLocatorRef; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.RemoteMcastMacs; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.RemoteMcastMacsBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.physical.locator.set.attributes.LocatorSet; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.physical.locator.set.attributes.LocatorSetBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.dhcp.rev160428.DesignatedSwitchesForExternalTunnels; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.dhcp.rev160428.designated.switches._for.external.tunnels.DesignatedSwitchForTunnel; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.dhcp.rev160428.designated.switches._for.external.tunnels.DesignatedSwitchForTunnelBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.dhcp.rev160428.designated.switches._for.external.tunnels.DesignatedSwitchForTunnelKey; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfTunnel; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeBase; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeVxlan; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rpcs.rev151217.GetExternalTunnelInterfaceNameInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rpcs.rev151217.GetExternalTunnelInterfaceNameOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rpcs.rev151217.ItmRpcService; import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId; import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node; import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; import org.opendaylight.yangtools.yang.common.RpcResult; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.common.base.Optional; import com.google.common.util.concurrent.FutureCallback; import com.google.common.util.concurrent.Futures; import com.google.common.util.concurrent.ListenableFuture; public class DhcpExternalTunnelManager { private static final Logger logger = LoggerFactory.getLogger(DhcpExternalTunnelManager.class); public static final String UNKNOWN_DMAC = "00:00:00:00:00:00"; private static final FutureCallback<Void> DEFAULT_CALLBACK = new FutureCallback<Void>() { @Override public void onSuccess(Void result) { logger.debug("Success in Datastore write operation"); } @Override public void onFailure(Throwable error) { logger.error("Error in Datastore write operation", error); }; }; private final DataBroker broker; private IMdsalApiManager mdsalUtil; private ConcurrentMap<BigInteger, List<Pair<IpAddress, String>>> designatedDpnsToTunnelIpElanNameCache = new ConcurrentHashMap<BigInteger, List<Pair<IpAddress, String>>>(); private ConcurrentMap<Pair<IpAddress, String>, Set<String>> tunnelIpElanNameToVmMacCache = new ConcurrentHashMap<Pair<IpAddress, String>, Set<String>>(); private ConcurrentMap<Pair<BigInteger, String>, Port> vniMacAddressToPortCache = new ConcurrentHashMap<Pair<BigInteger, String>, Port>(); private ItmRpcService itmRpcService; private EntityOwnershipService entityOwnershipService; public DhcpExternalTunnelManager(DataBroker broker, IMdsalApiManager mdsalUtil, ItmRpcService itmRpcService, EntityOwnershipService entityOwnershipService) { this.broker = broker; this.mdsalUtil = mdsalUtil; this.itmRpcService = itmRpcService; this.entityOwnershipService = entityOwnershipService; initilizeCaches(); } private void initilizeCaches() { logger.trace("Loading designatedDpnsToTunnelIpElanNameCache"); InstanceIdentifier<DesignatedSwitchesForExternalTunnels> instanceIdentifier = InstanceIdentifier .builder(DesignatedSwitchesForExternalTunnels.class).build(); Optional<DesignatedSwitchesForExternalTunnels> designatedSwitchForTunnelOptional = MDSALUtil.read(broker, LogicalDatastoreType.CONFIGURATION, instanceIdentifier); if (designatedSwitchForTunnelOptional.isPresent()) { List<DesignatedSwitchForTunnel> list = designatedSwitchForTunnelOptional.get() .getDesignatedSwitchForTunnel(); for (DesignatedSwitchForTunnel designatedSwitchForTunnel : list) { List<Pair<IpAddress, String>> listOfTunnelIpElanNamePair = designatedDpnsToTunnelIpElanNameCache .get(designatedSwitchForTunnel.getDpId()); if (listOfTunnelIpElanNamePair == null) { listOfTunnelIpElanNamePair = new LinkedList<Pair<IpAddress, String>>(); } Pair<IpAddress, String> tunnelIpElanNamePair = new ImmutablePair<IpAddress, String>( designatedSwitchForTunnel.getTunnelRemoteIpAddress(), designatedSwitchForTunnel.getElanInstanceName()); listOfTunnelIpElanNamePair.add(tunnelIpElanNamePair); designatedDpnsToTunnelIpElanNameCache.put(BigInteger.valueOf(designatedSwitchForTunnel.getDpId()), listOfTunnelIpElanNamePair); } } logger.trace("Loading vniMacAddressToPortCache"); InstanceIdentifier<Ports> inst = InstanceIdentifier.builder(Neutron.class).child(Ports.class).build(); Optional<Ports> optionalPorts = MDSALUtil.read(broker, LogicalDatastoreType.CONFIGURATION, inst); if (optionalPorts.isPresent()) { List<Port> list = optionalPorts.get().getPort(); for (Port port : list) { if (NeutronUtils.isPortVnicTypeNormal(port)) { continue; } String macAddress = port.getMacAddress().getValue(); Uuid networkId = port.getNetworkId(); String segmentationId = DhcpServiceUtils.getSegmentationId(networkId, broker); if (segmentationId == null) { return; } updateVniMacToPortCache(new BigInteger(segmentationId), macAddress, port); } } } public BigInteger designateDpnId(IpAddress tunnelIp, String elanInstanceName, List<BigInteger> dpns) { BigInteger designatedDpnId = readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName); if (designatedDpnId != null && !designatedDpnId.equals(DHCPMConstants.INVALID_DPID)) { logger.trace("Dpn {} already designated for tunnelIp - elan : {} - {}", designatedDpnId, tunnelIp, elanInstanceName); return designatedDpnId; } return chooseDpn(tunnelIp, elanInstanceName, dpns); } public void installDhcpFlowsForVms(IpAddress tunnelIp, String elanInstanceName, List<BigInteger> dpns, BigInteger designatedDpnId, String vmMacAddress) { installDhcpEntries(designatedDpnId, vmMacAddress, entityOwnershipService); dpns.remove(designatedDpnId); for (BigInteger dpn : dpns) { installDhcpDropAction(dpn, vmMacAddress, entityOwnershipService); } updateLocalCache(tunnelIp, elanInstanceName, vmMacAddress); } public void installDhcpFlowsForVms(IpAddress tunnelIp, String elanInstanceName, BigInteger designatedDpnId, Set<String> listVmMacAddress) { for (String vmMacAddress : listVmMacAddress) { installDhcpEntries(designatedDpnId, vmMacAddress); } } public void unInstallDhcpFlowsForVms(String elanInstanceName, List<BigInteger> dpns, String vmMacAddress) { for (BigInteger dpn : dpns) { unInstallDhcpEntries(dpn, vmMacAddress, entityOwnershipService); } removeFromLocalCache(elanInstanceName, vmMacAddress); } public BigInteger readDesignatedSwitchesForExternalTunnel(IpAddress tunnelIp, String elanInstanceName) { InstanceIdentifier<DesignatedSwitchForTunnel> instanceIdentifier = InstanceIdentifier .builder(DesignatedSwitchesForExternalTunnels.class).child(DesignatedSwitchForTunnel.class, new DesignatedSwitchForTunnelKey(elanInstanceName, tunnelIp)) .build(); Optional<DesignatedSwitchForTunnel> designatedSwitchForTunnelOptional = MDSALUtil.read(broker, LogicalDatastoreType.CONFIGURATION, instanceIdentifier); if (designatedSwitchForTunnelOptional.isPresent()) { return BigInteger.valueOf(designatedSwitchForTunnelOptional.get().getDpId()); } return null; } public void writeDesignatedSwitchForExternalTunnel(BigInteger dpnId, IpAddress tunnelIp, String elanInstanceName) { DesignatedSwitchForTunnelKey designatedSwitchForTunnelKey = new DesignatedSwitchForTunnelKey( elanInstanceName, tunnelIp); InstanceIdentifier<DesignatedSwitchForTunnel> instanceIdentifier = InstanceIdentifier .builder(DesignatedSwitchesForExternalTunnels.class) .child(DesignatedSwitchForTunnel.class, designatedSwitchForTunnelKey).build(); DesignatedSwitchForTunnel designatedSwitchForTunnel = new DesignatedSwitchForTunnelBuilder() .setDpId(dpnId.longValue()).setElanInstanceName(elanInstanceName).setTunnelRemoteIpAddress(tunnelIp) .setKey(designatedSwitchForTunnelKey).build(); logger.trace("Writing into CONFIG DS tunnelIp {}, elanInstanceName {}, dpnId {}", tunnelIp, elanInstanceName, dpnId); MDSALDataStoreUtils.asyncUpdate(broker, LogicalDatastoreType.CONFIGURATION, instanceIdentifier, designatedSwitchForTunnel, DEFAULT_CALLBACK); } public void removeDesignatedSwitchForExternalTunnel(BigInteger dpnId, IpAddress tunnelIp, String elanInstanceName) { DesignatedSwitchForTunnelKey designatedSwitchForTunnelKey = new DesignatedSwitchForTunnelKey( elanInstanceName, tunnelIp); InstanceIdentifier<DesignatedSwitchForTunnel> instanceIdentifier = InstanceIdentifier .builder(DesignatedSwitchesForExternalTunnels.class) .child(DesignatedSwitchForTunnel.class, designatedSwitchForTunnelKey).build(); logger.trace("Writing into CONFIG DS tunnelIp {}, elanInstanceName {}, dpnId {}", tunnelIp, elanInstanceName, dpnId); MDSALDataStoreUtils.asyncRemove(broker, LogicalDatastoreType.CONFIGURATION, instanceIdentifier, DEFAULT_CALLBACK); } public void installDhcpDropActionOnDpn(BigInteger dpId) { List<String> vmMacs = getAllVmMacs(); logger.trace("Installing drop actions to this new DPN {} VMs {}", dpId, vmMacs); for (String vmMacAddress : vmMacs) { installDhcpDropAction(dpId, vmMacAddress); } } private List<String> getAllVmMacs() { List<String> vmMacs = new LinkedList<String>(); Collection<Set<String>> listOfVmMacs = tunnelIpElanNameToVmMacCache.values(); for (Set<String> list : listOfVmMacs) { vmMacs.addAll(list); } return vmMacs; } public void updateLocalCache(BigInteger designatedDpnId, IpAddress tunnelIp, String elanInstanceName) { Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<IpAddress, String>(tunnelIp, elanInstanceName); List<Pair<IpAddress, String>> tunnelIpElanNameList; tunnelIpElanNameList = designatedDpnsToTunnelIpElanNameCache.get(designatedDpnId); if (tunnelIpElanNameList == null) { tunnelIpElanNameList = new LinkedList<Pair<IpAddress, String>>(); } tunnelIpElanNameList.add(tunnelIpElanName); designatedDpnsToTunnelIpElanNameCache.put(designatedDpnId, tunnelIpElanNameList); } private void updateLocalCache(IpAddress tunnelIp, String elanInstanceName, String vmMacAddress) { Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<IpAddress, String>(tunnelIp, elanInstanceName); Set<String> listExistingVmMacAddress; listExistingVmMacAddress = tunnelIpElanNameToVmMacCache.get(tunnelIpElanName); if (listExistingVmMacAddress == null) { listExistingVmMacAddress = new HashSet<String>(); } listExistingVmMacAddress.add(vmMacAddress); tunnelIpElanNameToVmMacCache.put(tunnelIpElanName, listExistingVmMacAddress); } public void handleDesignatedDpnDown(BigInteger dpnId, List<BigInteger> listOfDpns) { logger.trace("In handleDesignatedDpnDown dpnId {}, listOfDpns {}", dpnId, listOfDpns); try { List<Pair<IpAddress, String>> listOfTunnelIpElanNamePairs = designatedDpnsToTunnelIpElanNameCache .get(dpnId); if (!dpnId.equals(DHCPMConstants.INVALID_DPID)) { List<String> listOfVms = getAllVmMacs(); for (String vmMacAddress : listOfVms) { unInstallDhcpEntries(dpnId, vmMacAddress); } } if (listOfTunnelIpElanNamePairs == null || listOfTunnelIpElanNamePairs.isEmpty()) { logger.trace("No tunnelIpElanName to handle for dpn {}. Returning", dpnId); return; } for (Pair<IpAddress, String> pair : listOfTunnelIpElanNamePairs) { updateCacheAndInstallNewFlows(dpnId, listOfDpns, pair); } } catch (Exception e) { logger.error("Error in handleDesignatedDpnDown {}", e); } } public void updateCacheAndInstallNewFlows(BigInteger dpnId, List<BigInteger> listOfDpns, Pair<IpAddress, String> pair) throws ExecutionException { BigInteger newDesignatedDpn = chooseDpn(pair.getLeft(), pair.getRight(), listOfDpns); if (newDesignatedDpn.equals(DHCPMConstants.INVALID_DPID)) { return; } Set<String> listVmMacs = tunnelIpElanNameToVmMacCache.get(pair); if (listVmMacs != null && !listVmMacs.isEmpty()) { installDhcpFlowsForVms(pair.getLeft(), pair.getRight(), newDesignatedDpn, listVmMacs); } } private void changeExistingFlowToDrop(Pair<IpAddress, String> tunnelIpElanNamePair, BigInteger dpnId) { try { Set<String> listVmMacAddress = tunnelIpElanNameToVmMacCache.get(tunnelIpElanNamePair); if (listVmMacAddress == null || listVmMacAddress.isEmpty()) { return; } for (String vmMacAddress : listVmMacAddress) { installDhcpDropAction(dpnId, vmMacAddress); } } catch (Exception e) { logger.error("Error in uninstallExistingFlows {}", e); } } /** * Choose a dpn among the list of elanDpns such that it has lowest count of being the designated dpn. * @param tunnelIp * @param elanInstanceName * @param dpns * @return */ private BigInteger chooseDpn(IpAddress tunnelIp, String elanInstanceName, List<BigInteger> dpns) { BigInteger designatedDpnId = DHCPMConstants.INVALID_DPID; if (dpns != null && dpns.size() != 0) { List<BigInteger> candidateDpns = DhcpServiceUtils.getDpnsForElan(elanInstanceName, broker); candidateDpns.retainAll(dpns); logger.trace("Choosing new dpn for tunnelIp {}, elanInstanceName {}, among elanDpns {}", tunnelIp, elanInstanceName, candidateDpns); boolean elanDpnAvailableFlag = true; if (candidateDpns == null || candidateDpns.isEmpty()) { candidateDpns = dpns; elanDpnAvailableFlag = false; } int size = 0; L2GatewayDevice device = getDeviceFromTunnelIp(elanInstanceName, tunnelIp); if (device == null) { logger.trace("Could not find any device for elanInstanceName {} and tunnelIp {}", elanInstanceName, tunnelIp); handleUnableToDesignateDpn(tunnelIp, elanInstanceName); return designatedDpnId; } for (BigInteger dpn : candidateDpns) { String hwvtepNodeId = device.getHwvtepNodeId(); if (!elanDpnAvailableFlag) { if (!isTunnelConfigured(dpn, hwvtepNodeId)) { logger.trace("Tunnel is not configured on dpn {} to TOR {}", dpn, hwvtepNodeId); continue; } } else if (!isTunnelUp(hwvtepNodeId, dpn)) { logger.trace("Tunnel is not up between dpn {} and TOR {}", dpn, hwvtepNodeId); continue; } List<Pair<IpAddress, String>> tunnelIpElanNameList = designatedDpnsToTunnelIpElanNameCache.get(dpn); if (tunnelIpElanNameList == null) { designatedDpnId = dpn; break; } if (size == 0 || tunnelIpElanNameList.size() < size) { size = tunnelIpElanNameList.size(); designatedDpnId = dpn; } } writeDesignatedSwitchForExternalTunnel(designatedDpnId, tunnelIp, elanInstanceName); return designatedDpnId; } handleUnableToDesignateDpn(tunnelIp, elanInstanceName); return designatedDpnId; } private void handleUnableToDesignateDpn(IpAddress tunnelIp, String elanInstanceName) { writeDesignatedSwitchForExternalTunnel(DHCPMConstants.INVALID_DPID, tunnelIp, elanInstanceName); } public void installDhcpEntries(BigInteger dpnId, String vmMacAddress) { DhcpServiceUtils.setupDhcpFlowEntry(dpnId, NwConstants.DHCP_TABLE_EXTERNAL_TUNNEL, vmMacAddress, NwConstants.ADD_FLOW, mdsalUtil); } public void installDhcpEntries(final BigInteger dpnId, final String vmMacAddress, EntityOwnershipService eos) { final String nodeId = DhcpServiceUtils.getNodeIdFromDpnId(dpnId); ListenableFuture<Boolean> checkEntityOwnerFuture = ClusteringUtils.checkNodeEntityOwner(eos, HwvtepSouthboundConstants.ELAN_ENTITY_TYPE, HwvtepSouthboundConstants.ELAN_ENTITY_NAME); Futures.addCallback(checkEntityOwnerFuture, new FutureCallback<Boolean>() { @Override public void onSuccess(Boolean isOwner) { if (isOwner) { installDhcpEntries(dpnId, vmMacAddress); } else { logger.trace("Exiting installDhcpEntries since this cluster node is not the owner for dpn {}", nodeId); } } @Override public void onFailure(Throwable error) { logger.error("Error while fetching checkNodeEntityOwner", error); } }); } public void unInstallDhcpEntries(BigInteger dpnId, String vmMacAddress) { DhcpServiceUtils.setupDhcpFlowEntry(dpnId, NwConstants.DHCP_TABLE_EXTERNAL_TUNNEL, vmMacAddress, NwConstants.DEL_FLOW, mdsalUtil); } public void unInstallDhcpEntries(final BigInteger dpnId, final String vmMacAddress, EntityOwnershipService eos) { final String nodeId = DhcpServiceUtils.getNodeIdFromDpnId(dpnId); ListenableFuture<Boolean> checkEntityOwnerFuture = ClusteringUtils.checkNodeEntityOwner(eos, HwvtepSouthboundConstants.ELAN_ENTITY_TYPE, HwvtepSouthboundConstants.ELAN_ENTITY_NAME); Futures.addCallback(checkEntityOwnerFuture, new FutureCallback<Boolean>() { @Override public void onSuccess(Boolean isOwner) { if (isOwner) { unInstallDhcpEntries(dpnId, vmMacAddress); } else { logger.trace("Exiting unInstallDhcpEntries since this cluster node is not the owner for dpn {}", nodeId); } } @Override public void onFailure(Throwable error) { logger.error("Error while fetching checkNodeEntityOwner", error); } }); } public void installDhcpDropAction(BigInteger dpn, String vmMacAddress) { DhcpServiceUtils.setupDhcpDropAction(dpn, NwConstants.DHCP_TABLE_EXTERNAL_TUNNEL, vmMacAddress, NwConstants.ADD_FLOW, mdsalUtil); } public void installDhcpDropAction(final BigInteger dpnId, final String vmMacAddress, EntityOwnershipService eos) { final String nodeId = DhcpServiceUtils.getNodeIdFromDpnId(dpnId); ListenableFuture<Boolean> checkEntityOwnerFuture = ClusteringUtils.checkNodeEntityOwner(eos, HwvtepSouthboundConstants.ELAN_ENTITY_TYPE, HwvtepSouthboundConstants.ELAN_ENTITY_NAME); Futures.addCallback(checkEntityOwnerFuture, new FutureCallback<Boolean>() { @Override public void onSuccess(Boolean isOwner) { if (isOwner) { installDhcpDropAction(dpnId, vmMacAddress); } else { logger.trace( "Exiting installDhcpDropAction since this cluster node is not the owner for dpn {}", nodeId); } } @Override public void onFailure(Throwable error) { logger.error("Error while fetching checkNodeEntityOwner", error); } }); } public void handleTunnelStateDown(IpAddress tunnelIp, BigInteger interfaceDpn) { logger.trace("In handleTunnelStateDown tunnelIp {}, interfaceDpn {}", tunnelIp, interfaceDpn); if (interfaceDpn == null) { return; } try { List<Pair<IpAddress, String>> tunnelElanPairList = designatedDpnsToTunnelIpElanNameCache .get(interfaceDpn); if (tunnelElanPairList == null || tunnelElanPairList.isEmpty()) { return; } for (Pair<IpAddress, String> tunnelElanPair : tunnelElanPairList) { IpAddress tunnelIpInDpn = tunnelElanPair.getLeft(); if (tunnelIpInDpn.equals(tunnelIp)) { List<BigInteger> dpns = DhcpServiceUtils.getListOfDpns(broker); dpns.remove(interfaceDpn); changeExistingFlowToDrop(tunnelElanPair, interfaceDpn); updateCacheAndInstallNewFlows(interfaceDpn, dpns, tunnelElanPair); } } } catch (Exception e) { logger.error("Error in handleTunnelStateDown {}", e.getMessage()); logger.trace("Exception details {}", e); } } private void removeFromLocalCache(String elanInstanceName, String vmMacAddress) { Set<Pair<IpAddress, String>> tunnelIpElanNameKeySet = tunnelIpElanNameToVmMacCache.keySet(); for (Pair<IpAddress, String> pair : tunnelIpElanNameKeySet) { if (pair.getRight().trim().equalsIgnoreCase(elanInstanceName.trim())) { Set<String> listExistingVmMacAddress; listExistingVmMacAddress = tunnelIpElanNameToVmMacCache.get(pair); if (listExistingVmMacAddress == null || listExistingVmMacAddress.isEmpty()) { continue; } listExistingVmMacAddress.remove(vmMacAddress); if (listExistingVmMacAddress.size() > 0) { tunnelIpElanNameToVmMacCache.put(pair, listExistingVmMacAddress); return; } tunnelIpElanNameToVmMacCache.remove(pair); } } } public void removeFromLocalCache(BigInteger designatedDpnId, IpAddress tunnelIp, String elanInstanceName) { Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<IpAddress, String>(tunnelIp, elanInstanceName); List<Pair<IpAddress, String>> tunnelIpElanNameList; tunnelIpElanNameList = designatedDpnsToTunnelIpElanNameCache.get(designatedDpnId); if (tunnelIpElanNameList != null) { tunnelIpElanNameList.remove(tunnelIpElanName); if (tunnelIpElanNameList.size() != 0) { designatedDpnsToTunnelIpElanNameCache.put(designatedDpnId, tunnelIpElanNameList); } else { designatedDpnsToTunnelIpElanNameCache.remove(designatedDpnId); } } } public void updateVniMacToPortCache(BigInteger vni, String macAddress, Port port) { if (macAddress == null) { return; } Pair<BigInteger, String> vniMacAddressPair = new ImmutablePair<BigInteger, String>(vni, macAddress.toUpperCase()); logger.trace("Updating vniMacAddressToPortCache with vni {} , mac {} , pair {} and port {}", vni, macAddress.toUpperCase(), vniMacAddressPair, port); vniMacAddressToPortCache.put(vniMacAddressPair, port); } public void removeVniMacToPortCache(BigInteger vni, String macAddress) { if (macAddress == null) { return; } Pair<BigInteger, String> vniMacAddressPair = new ImmutablePair<BigInteger, String>(vni, macAddress.toUpperCase()); vniMacAddressToPortCache.remove(vniMacAddressPair); } public Port readVniMacToPortCache(BigInteger vni, String macAddress) { if (macAddress == null) { return null; } Pair<BigInteger, String> vniMacAddressPair = new ImmutablePair<BigInteger, String>(vni, macAddress.toUpperCase()); logger.trace("Reading vniMacAddressToPortCache with vni {} , mac {} , pair {} and port {}", vni, macAddress.toUpperCase(), vniMacAddressPair, vniMacAddressToPortCache.get(vniMacAddressPair)); return vniMacAddressToPortCache.get(vniMacAddressPair); } public String getExternalTunnelInterfaceName(String sourceNode, String dstNode) { String tunnelInterfaceName = null; Class<? extends TunnelTypeBase> tunType = TunnelTypeVxlan.class; try { Future<RpcResult<GetExternalTunnelInterfaceNameOutput>> output = itmRpcService .getExternalTunnelInterfaceName(new GetExternalTunnelInterfaceNameInputBuilder() .setSourceNode(sourceNode).setDestinationNode(dstNode).setTunnelType(tunType).build()); RpcResult<GetExternalTunnelInterfaceNameOutput> rpcResult = output.get(); if (rpcResult.isSuccessful()) { tunnelInterfaceName = rpcResult.getResult().getInterfaceName(); logger.debug("Tunnel interface name: {}", tunnelInterfaceName); } else { logger.warn("RPC call to ITM.GetExternalTunnelInterfaceName failed with error: {}", rpcResult.getErrors()); } } catch (NullPointerException | InterruptedException | ExecutionException e) { logger.error("Failed to get external tunnel interface name for sourceNode: {} and dstNode: {}: {} ", sourceNode, dstNode, e); } return tunnelInterfaceName; } public static Optional<Node> getNode(DataBroker dataBroker, String physicalSwitchNodeId) { InstanceIdentifier<Node> psNodeId = HwvtepSouthboundUtils .createInstanceIdentifier(new NodeId(physicalSwitchNodeId)); Optional<Node> physicalSwitchOptional = MDSALUtil.read(LogicalDatastoreType.CONFIGURATION, psNodeId, dataBroker); return physicalSwitchOptional; } public RemoteMcastMacs createRemoteMcastMac(Node dstDevice, String logicalSwitchName, IpAddress internalTunnelIp) { List<LocatorSet> locators = new ArrayList<>(); for (TerminationPoint tp : dstDevice.getTerminationPoint()) { HwvtepPhysicalLocatorAugmentation aug = tp.getAugmentation(HwvtepPhysicalLocatorAugmentation.class); if (internalTunnelIp.getIpv4Address().equals(aug.getDstIp().getIpv4Address())) { HwvtepPhysicalLocatorRef phyLocRef = new HwvtepPhysicalLocatorRef( HwvtepSouthboundUtils.createPhysicalLocatorInstanceIdentifier(dstDevice.getNodeId(), aug)); locators.add(new LocatorSetBuilder().setLocatorRef(phyLocRef).build()); } } HwvtepLogicalSwitchRef lsRef = new HwvtepLogicalSwitchRef( HwvtepSouthboundUtils.createLogicalSwitchesInstanceIdentifier(dstDevice.getNodeId(), new HwvtepNodeName(logicalSwitchName))); RemoteMcastMacs remoteUcastMacs = new RemoteMcastMacsBuilder().setMacEntryKey(new MacAddress(UNKNOWN_DMAC)) .setLogicalSwitchRef(lsRef).setLocatorSet(locators).build(); return remoteUcastMacs; } private WriteTransaction putRemoteMcastMac(WriteTransaction transaction, String elanName, L2GatewayDevice device, IpAddress internalTunnelIp) { Optional<Node> optionalNode = getNode(broker, device.getHwvtepNodeId()); Node dstNode = optionalNode.get(); if (dstNode == null) { logger.debug("could not get device node {} ", device.getHwvtepNodeId()); return null; } RemoteMcastMacs macs = createRemoteMcastMac(dstNode, elanName, internalTunnelIp); HwvtepUtils.putRemoteMcastMac(transaction, dstNode.getNodeId(), macs); return transaction; } public void installRemoteMcastMac(final BigInteger designatedDpnId, final IpAddress tunnelIp, final String elanInstanceName) { if (designatedDpnId.equals(DHCPMConstants.INVALID_DPID)) { return; } ListenableFuture<Boolean> checkEntityOwnerFuture = ClusteringUtils.checkNodeEntityOwner( entityOwnershipService, HwvtepSouthboundConstants.ELAN_ENTITY_TYPE, HwvtepSouthboundConstants.ELAN_ENTITY_NAME); Futures.addCallback(checkEntityOwnerFuture, new FutureCallback<Boolean>() { @Override public void onSuccess(Boolean isOwner) { if (isOwner) { logger.info("Installing remote McastMac"); L2GatewayDevice device = getDeviceFromTunnelIp(elanInstanceName, tunnelIp); String tunnelInterfaceName = getExternalTunnelInterfaceName(String.valueOf(designatedDpnId), device.getHwvtepNodeId()); IpAddress internalTunnelIp = null; if (tunnelInterfaceName != null) { Interface tunnelInterface = DhcpServiceUtils.getInterfaceFromConfigDS(tunnelInterfaceName, broker); if (tunnelInterface == null) { logger.trace("Tunnel Interface is not present {}", tunnelInterfaceName); return; } internalTunnelIp = tunnelInterface.getAugmentation(IfTunnel.class).getTunnelSource(); WriteTransaction transaction = broker.newWriteOnlyTransaction(); putRemoteMcastMac(transaction, elanInstanceName, device, internalTunnelIp); if (transaction != null) { transaction.submit(); } } } else { logger.info("Installing remote McastMac is not executed for this node."); } } @Override public void onFailure(Throwable error) { logger.error("Failed to install remote McastMac", error); } }); } private L2GatewayDevice getDeviceFromTunnelIp(String elanInstanceName, IpAddress tunnelIp) { ConcurrentMap<String, L2GatewayDevice> devices = L2GatewayCacheUtils.getCache(); for (L2GatewayDevice device : devices.values()) { if (device.getTunnelIp().equals(tunnelIp)) { return device; } } return null; } private boolean isTunnelUp(String nodeName, BigInteger dpn) { boolean isTunnelUp = false; String tunnelInterfaceName = getExternalTunnelInterfaceName(String.valueOf(dpn), nodeName); if (tunnelInterfaceName == null) { logger.debug("Tunnel Interface is not present {}", tunnelInterfaceName); return isTunnelUp; } org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface tunnelInterface = DhcpServiceUtils .getInterfaceFromOperationalDS(tunnelInterfaceName, broker); if (tunnelInterface == null) { logger.debug("Interface {} is not present in interface state", tunnelInterfaceName); return isTunnelUp; } isTunnelUp = (tunnelInterface.getOperStatus() == OperStatus.Up) ? true : false; return isTunnelUp; } public void handleTunnelStateUp(IpAddress tunnelIp, BigInteger interfaceDpn) { logger.trace("In handleTunnelStateUp tunnelIp {}, interfaceDpn {}", tunnelIp, interfaceDpn); try { List<Pair<IpAddress, String>> tunnelIpElanPair = designatedDpnsToTunnelIpElanNameCache .get(DHCPMConstants.INVALID_DPID); List<BigInteger> dpns = DhcpServiceUtils.getListOfDpns(broker); if (tunnelIpElanPair == null || tunnelIpElanPair.isEmpty()) { return; } for (Pair<IpAddress, String> pair : tunnelIpElanPair) { if (tunnelIp.equals(pair.getLeft())) { designateDpnId(tunnelIp, pair.getRight(), dpns); } } } catch (Exception e) { logger.error("Error in handleTunnelStateUp {}", e.getMessage()); logger.trace("Exception details {}", e); } } private boolean isTunnelConfigured(BigInteger dpn, String hwVtepNodeId) { String tunnelInterfaceName = getExternalTunnelInterfaceName(String.valueOf(dpn), hwVtepNodeId); if (tunnelInterfaceName == null) { return false; } Interface tunnelInterface = DhcpServiceUtils.getInterfaceFromConfigDS(tunnelInterfaceName, broker); if (tunnelInterface == null) { logger.debug("Tunnel Interface is not present {}", tunnelInterfaceName); return false; } return true; } public void unInstallDhcpFlowsForVms(String elanInstanceName, IpAddress tunnelIp, List<BigInteger> dpns) { Pair<IpAddress, String> tunnelIpElanNamePair = new ImmutablePair<IpAddress, String>(tunnelIp, elanInstanceName); Set<String> vmMacs = tunnelIpElanNameToVmMacCache.get(tunnelIpElanNamePair); logger.trace("In unInstallFlowsForVms elanInstanceName {}, tunnelIp {}, dpns {}, vmMacs {}", elanInstanceName, tunnelIp, dpns, vmMacs); if (vmMacs == null) { return; } for (String vmMacAddress : vmMacs) { for (BigInteger dpn : dpns) { unInstallDhcpEntries(dpn, vmMacAddress, entityOwnershipService); } } tunnelIpElanNameToVmMacCache.remove(tunnelIpElanNamePair); } }