| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.routing.fpm; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Lists; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Modified; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.ReferencePolicy; |
| import org.apache.felix.scr.annotations.Service; |
| import org.jboss.netty.bootstrap.ServerBootstrap; |
| import org.jboss.netty.channel.Channel; |
| import org.jboss.netty.channel.ChannelException; |
| import org.jboss.netty.channel.ChannelFactory; |
| import org.jboss.netty.channel.ChannelPipeline; |
| import org.jboss.netty.channel.ChannelPipelineFactory; |
| import org.jboss.netty.channel.Channels; |
| import org.jboss.netty.channel.group.ChannelGroup; |
| import org.jboss.netty.channel.group.DefaultChannelGroup; |
| import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory; |
| import org.jboss.netty.handler.timeout.IdleStateHandler; |
| import org.jboss.netty.util.HashedWheelTimer; |
| import org.onlab.packet.Ip4Address; |
| import org.onlab.packet.Ip6Address; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.util.KryoNamespace; |
| import org.onlab.util.Tools; |
| import org.onosproject.cfg.ComponentConfigService; |
| import org.onosproject.cluster.ClusterEvent; |
| import org.onosproject.cluster.ClusterEventListener; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.net.host.InterfaceIpAddress; |
| import org.onosproject.net.intf.Interface; |
| import org.onosproject.net.intf.InterfaceService; |
| import org.onosproject.routeservice.Route; |
| import org.onosproject.routeservice.RouteAdminService; |
| import org.onosproject.routing.fpm.api.FpmPrefixStore; |
| import org.onosproject.routing.fpm.api.FpmPrefixStoreEvent; |
| import org.onosproject.routing.fpm.api.FpmRecord; |
| import org.onosproject.routing.fpm.protocol.FpmHeader; |
| import org.onosproject.routing.fpm.protocol.Netlink; |
| import org.onosproject.routing.fpm.protocol.NetlinkMessageType; |
| import org.onosproject.routing.fpm.protocol.RouteAttribute; |
| import org.onosproject.routing.fpm.protocol.RouteAttributeDst; |
| import org.onosproject.routing.fpm.protocol.RouteAttributeGateway; |
| import org.onosproject.routing.fpm.protocol.RtNetlink; |
| import org.onosproject.routing.fpm.protocol.RtProtocol; |
| import org.onosproject.store.StoreDelegate; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.AsyncDistributedLock; |
| import org.onosproject.store.service.ConsistentMap; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.net.InetSocketAddress; |
| import java.time.Duration; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Dictionary; |
| import java.util.HashSet; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.stream.Collectors; |
| |
| import static java.util.concurrent.Executors.newCachedThreadPool; |
| import static org.onlab.util.Tools.groupedThreads; |
| |
| /** |
| * Forwarding Plane Manager (FPM) route source. |
| */ |
| @Service |
| @Component(immediate = true) |
| public class FpmManager implements FpmInfoService { |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private static final int FPM_PORT = 2620; |
| private static final String APP_NAME = "org.onosproject.fpm"; |
| private static final int IDLE_TIMEOUT_SECS = 5; |
| private static final String LOCK_NAME = "fpm-manager-lock"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ComponentConfigService componentConfigService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected RouteAdminService routeService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected InterfaceService interfaceService; |
| |
| @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY, |
| bind = "bindRipStore", |
| unbind = "unbindRipStore", |
| policy = ReferencePolicy.DYNAMIC, |
| target = "(fpm_type=RIP)") |
| protected volatile FpmPrefixStore ripStore; |
| |
| @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY, |
| bind = "bindDhcpStore", |
| unbind = "unbindDhcpStore", |
| policy = ReferencePolicy.DYNAMIC, |
| target = "(fpm_type=DHCP)") |
| protected volatile FpmPrefixStore dhcpStore; |
| |
| private final StoreDelegate<FpmPrefixStoreEvent> fpmPrefixStoreDelegate |
| = new FpmPrefixStoreDelegate(); |
| |
| private ApplicationId appId; |
| private ServerBootstrap serverBootstrap; |
| private Channel serverChannel; |
| private ChannelGroup allChannels = new DefaultChannelGroup(); |
| private final InternalClusterListener clusterListener = new InternalClusterListener(); |
| private AsyncDistributedLock asyncLock; |
| |
| private ConsistentMap<FpmPeer, Set<FpmConnectionInfo>> peers; |
| |
| private Map<FpmPeer, Map<IpPrefix, Route>> fpmRoutes = new ConcurrentHashMap<>(); |
| |
| //Local cache for peers to be used in case of cluster partition. |
| private Map<FpmPeer, Set<FpmConnectionInfo>> localPeers = new ConcurrentHashMap<>(); |
| |
| @Property(name = "clearRoutes", boolValue = true, |
| label = "Whether to clear routes when the FPM connection goes down") |
| private boolean clearRoutes = true; |
| |
| @Property(name = "pdPushEnabled", boolValue = false, |
| label = "Whether to push prefixes to Quagga over fpm connection") |
| private boolean pdPushEnabled = false; |
| |
| @Property(name = "pdPushNextHopIPv4", value = "", |
| label = "IPv4 next-hop address for PD Pushing.") |
| private Ip4Address pdPushNextHopIPv4 = null; |
| |
| @Property(name = "pdPushNextHopIPv6", value = "", |
| label = "IPv6 next-hop address for PD Pushing.") |
| private Ip6Address pdPushNextHopIPv6 = null; |
| |
| protected void bindRipStore(FpmPrefixStore store) { |
| if ((ripStore == null) && (store != null)) { |
| ripStore = store; |
| ripStore.setDelegate(fpmPrefixStoreDelegate); |
| for (Channel ch : allChannels) { |
| processRipStaticRoutes(ch); |
| } |
| } |
| } |
| |
| protected void unbindRipStore(FpmPrefixStore store) { |
| if (ripStore == store) { |
| ripStore.unsetDelegate(fpmPrefixStoreDelegate); |
| ripStore = null; |
| } |
| } |
| |
| protected void bindDhcpStore(FpmPrefixStore store) { |
| if ((dhcpStore == null) && (store != null)) { |
| dhcpStore = store; |
| dhcpStore.setDelegate(fpmPrefixStoreDelegate); |
| for (Channel ch : allChannels) { |
| processDhcpStaticRoutes(ch); |
| } |
| } |
| } |
| |
| protected void unbindDhcpStore(FpmPrefixStore store) { |
| if (dhcpStore == store) { |
| dhcpStore.unsetDelegate(fpmPrefixStoreDelegate); |
| dhcpStore = null; |
| } |
| } |
| |
| @Activate |
| protected void activate(ComponentContext context) { |
| componentConfigService.preSetProperty( |
| "org.onosproject.incubator.store.routing.impl.RouteStoreImpl", |
| "distributed", "true"); |
| |
| componentConfigService.registerProperties(getClass()); |
| |
| KryoNamespace serializer = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .register(FpmPeer.class) |
| .register(FpmConnectionInfo.class) |
| .build(); |
| peers = storageService.<FpmPeer, Set<FpmConnectionInfo>>consistentMapBuilder() |
| .withName("fpm-connections") |
| .withSerializer(Serializer.using(serializer)) |
| .build(); |
| |
| modified(context); |
| startServer(); |
| |
| appId = coreService.registerApplication(APP_NAME, peers::destroy); |
| |
| asyncLock = storageService.lockBuilder().withName(LOCK_NAME).build(); |
| clusterService.addListener(clusterListener); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| componentConfigService.preSetProperty( |
| "org.onosproject.incubator.store.routing.impl.RouteStoreImpl", |
| "distributed", "false"); |
| |
| stopServer(); |
| fpmRoutes.clear(); |
| componentConfigService.unregisterProperties(getClass(), false); |
| |
| clusterService.removeListener(clusterListener); |
| asyncLock.unlock(); |
| |
| log.info("Stopped"); |
| } |
| |
| @Modified |
| protected void modified(ComponentContext context) { |
| Dictionary<?, ?> properties = context.getProperties(); |
| if (properties == null) { |
| return; |
| } |
| String strClearRoutes = Tools.get(properties, "clearRoutes"); |
| if (strClearRoutes != null) { |
| clearRoutes = Boolean.parseBoolean(strClearRoutes); |
| log.info("clearRoutes is {}", clearRoutes); |
| } |
| |
| String strPdPushEnabled = Tools.get(properties, "pdPushEnabled"); |
| if (strPdPushEnabled != null) { |
| boolean oldValue = pdPushEnabled; |
| pdPushEnabled = Boolean.parseBoolean(strPdPushEnabled); |
| if (pdPushEnabled) { |
| |
| pdPushNextHopIPv4 = null; |
| pdPushNextHopIPv6 = null; |
| |
| String strPdPushNextHopIPv4 = Tools.get(properties, "pdPushNextHopIPv4"); |
| if (strPdPushNextHopIPv4 != null) { |
| pdPushNextHopIPv4 = Ip4Address.valueOf(strPdPushNextHopIPv4); |
| } |
| String strPdPushNextHopIPv6 = Tools.get(properties, "pdPushNextHopIPv6"); |
| if (strPdPushNextHopIPv6 != null) { |
| pdPushNextHopIPv6 = Ip6Address.valueOf(strPdPushNextHopIPv6); |
| } |
| |
| if (pdPushNextHopIPv4 == null) { |
| pdPushNextHopIPv4 = interfaceService.getInterfaces() |
| .stream() |
| .filter(iface -> iface.name().contains("RUR")) |
| .map(Interface::ipAddressesList) |
| .flatMap(Collection::stream) |
| .map(InterfaceIpAddress::ipAddress) |
| .filter(IpAddress::isIp4) |
| .map(IpAddress::getIp4Address) |
| .findFirst() |
| .orElse(null); |
| } |
| |
| if (pdPushNextHopIPv6 == null) { |
| pdPushNextHopIPv6 = interfaceService.getInterfaces() |
| .stream() |
| .filter(iface -> iface.name().contains("RUR")) |
| .map(Interface::ipAddressesList) |
| .flatMap(Collection::stream) |
| .map(InterfaceIpAddress::ipAddress) |
| .filter(IpAddress::isIp6) |
| .map(IpAddress::getIp6Address) |
| .findFirst() |
| .orElse(null); |
| } |
| |
| log.info("PD pushing is enabled."); |
| if (pdPushNextHopIPv4 != null) { |
| log.info("ipv4 next-hop {}", pdPushNextHopIPv4.toString()); |
| } else { |
| log.info("ipv4 next-hop is null"); |
| } |
| if (pdPushNextHopIPv6 != null) { |
| log.info("ipv6 next-hop={}", pdPushNextHopIPv6.toString()); |
| } else { |
| log.info("ipv6 next-hop is null"); |
| } |
| if (!oldValue) { |
| processStaticRoutes(); |
| } |
| } else { |
| log.info("PD pushing is disabled."); |
| } |
| } |
| } |
| |
| private void startServer() { |
| HashedWheelTimer timer = new HashedWheelTimer( |
| groupedThreads("onos/fpm", "fpm-timer-%d", log)); |
| |
| ChannelFactory channelFactory = new NioServerSocketChannelFactory( |
| newCachedThreadPool(groupedThreads("onos/fpm", "sm-boss-%d", log)), |
| newCachedThreadPool(groupedThreads("onos/fpm", "sm-worker-%d", log))); |
| ChannelPipelineFactory pipelineFactory = () -> { |
| // Allocate a new session per connection |
| IdleStateHandler idleHandler = |
| new IdleStateHandler(timer, IDLE_TIMEOUT_SECS, 0, 0); |
| FpmSessionHandler fpmSessionHandler = |
| new FpmSessionHandler(this, new InternalFpmListener()); |
| FpmFrameDecoder fpmFrameDecoder = new FpmFrameDecoder(); |
| |
| // Setup the processing pipeline |
| ChannelPipeline pipeline = Channels.pipeline(); |
| pipeline.addLast("FpmFrameDecoder", fpmFrameDecoder); |
| pipeline.addLast("idle", idleHandler); |
| pipeline.addLast("FpmSession", fpmSessionHandler); |
| return pipeline; |
| }; |
| |
| InetSocketAddress listenAddress = new InetSocketAddress(FPM_PORT); |
| |
| serverBootstrap = new ServerBootstrap(channelFactory); |
| serverBootstrap.setOption("child.reuseAddr", true); |
| serverBootstrap.setOption("child.keepAlive", true); |
| serverBootstrap.setOption("child.tcpNoDelay", true); |
| serverBootstrap.setPipelineFactory(pipelineFactory); |
| try { |
| serverChannel = serverBootstrap.bind(listenAddress); |
| allChannels.add(serverChannel); |
| } catch (ChannelException e) { |
| log.debug("Exception binding to FPM port {}: ", |
| listenAddress.getPort(), e); |
| stopServer(); |
| } |
| } |
| |
| private void stopServer() { |
| allChannels.close().awaitUninterruptibly(); |
| allChannels.clear(); |
| if (serverBootstrap != null) { |
| serverBootstrap.releaseExternalResources(); |
| } |
| |
| if (clearRoutes) { |
| peers.keySet().forEach(this::clearRoutes); |
| } |
| } |
| |
| private boolean routeInDhcpStore(IpPrefix prefix) { |
| |
| if (dhcpStore != null) { |
| Collection<FpmRecord> dhcpRecords = dhcpStore.getFpmRecords(); |
| return dhcpRecords.stream().anyMatch(record -> record.ipPrefix().equals(prefix)); |
| } |
| return false; |
| } |
| |
| private boolean routeInRipStore(IpPrefix prefix) { |
| |
| if (ripStore != null) { |
| Collection<FpmRecord> ripRecords = ripStore.getFpmRecords(); |
| return ripRecords.stream().anyMatch(record -> record.ipPrefix().equals(prefix)); |
| } |
| return false; |
| } |
| |
| private void fpmMessage(FpmPeer peer, FpmHeader fpmMessage) { |
| if (fpmMessage.type() == FpmHeader.FPM_TYPE_KEEPALIVE) { |
| return; |
| } |
| |
| Netlink netlink = fpmMessage.netlink(); |
| RtNetlink rtNetlink = netlink.rtNetlink(); |
| |
| if (log.isTraceEnabled()) { |
| log.trace("Received FPM message: {}", fpmMessage); |
| } |
| |
| if (!(rtNetlink.protocol() == RtProtocol.ZEBRA || |
| rtNetlink.protocol() == RtProtocol.UNSPEC)) { |
| log.trace("Ignoring non-zebra route"); |
| return; |
| } |
| |
| IpAddress dstAddress = null; |
| IpAddress gateway = null; |
| |
| for (RouteAttribute attribute : rtNetlink.attributes()) { |
| if (attribute.type() == RouteAttribute.RTA_DST) { |
| RouteAttributeDst raDst = (RouteAttributeDst) attribute; |
| dstAddress = raDst.dstAddress(); |
| } else if (attribute.type() == RouteAttribute.RTA_GATEWAY) { |
| RouteAttributeGateway raGateway = (RouteAttributeGateway) attribute; |
| gateway = raGateway.gateway(); |
| } |
| } |
| |
| if (dstAddress == null) { |
| log.error("Dst address missing!"); |
| return; |
| } |
| |
| IpPrefix prefix = IpPrefix.valueOf(dstAddress, rtNetlink.dstLength()); |
| |
| // Ignore routes that we sent. |
| if (gateway != null && ((prefix.isIp4() && (gateway.equals(pdPushNextHopIPv4))) || |
| gateway.equals(pdPushNextHopIPv6))) { |
| if (routeInDhcpStore(prefix) || routeInRipStore(prefix)) { |
| return; |
| } |
| } |
| |
| List<Route> updates = new LinkedList<>(); |
| List<Route> withdraws = new LinkedList<>(); |
| |
| Route route; |
| switch (netlink.type()) { |
| case RTM_NEWROUTE: |
| if (gateway == null) { |
| // We ignore interface routes with no gateway for now. |
| return; |
| } |
| route = new Route(Route.Source.FPM, prefix, gateway, clusterService.getLocalNode().id()); |
| |
| |
| Route oldRoute = fpmRoutes.get(peer).put(prefix, route); |
| |
| if (oldRoute != null) { |
| log.trace("Swapping {} with {}", oldRoute, route); |
| withdraws.add(oldRoute); |
| } |
| updates.add(route); |
| break; |
| case RTM_DELROUTE: |
| Route existing = fpmRoutes.get(peer).remove(prefix); |
| if (existing == null) { |
| log.warn("Got delete for non-existent prefix"); |
| return; |
| } |
| |
| route = new Route(Route.Source.FPM, prefix, existing.nextHop(), clusterService.getLocalNode().id()); |
| |
| withdraws.add(route); |
| break; |
| case RTM_GETROUTE: |
| default: |
| break; |
| } |
| |
| updateRouteStore(updates, withdraws); |
| } |
| |
| private synchronized void updateRouteStore(Collection<Route> routesToAdd, Collection<Route> routesToRemove) { |
| routeService.withdraw(routesToRemove); |
| routeService.update(routesToAdd); |
| } |
| |
| private void clearRoutes(FpmPeer peer) { |
| log.info("Clearing all routes for peer {}", peer); |
| Map<IpPrefix, Route> routes = fpmRoutes.remove(peer); |
| if (routes != null) { |
| updateRouteStore(Lists.newArrayList(), routes.values()); |
| } |
| } |
| |
| public void processStaticRoutes() { |
| for (Channel ch : allChannels) { |
| processStaticRoutes(ch); |
| } |
| } |
| |
| public void processStaticRoutes(Channel ch) { |
| processRipStaticRoutes(ch); |
| processDhcpStaticRoutes(ch); |
| } |
| |
| private void processRipStaticRoutes(Channel ch) { |
| |
| /* Get RIP static routes. */ |
| if (ripStore != null) { |
| Collection<FpmRecord> ripRecords = ripStore.getFpmRecords(); |
| log.info("RIP store size is {}", ripRecords.size()); |
| |
| ripRecords.forEach(record -> sendRouteUpdateToChannel(true, |
| record.ipPrefix(), ch)); |
| } |
| } |
| |
| private void processDhcpStaticRoutes(Channel ch) { |
| |
| /* Get Dhcp static routes. */ |
| if (dhcpStore != null) { |
| Collection<FpmRecord> dhcpRecords = dhcpStore.getFpmRecords(); |
| log.info("Dhcp store size is {}", dhcpRecords.size()); |
| |
| dhcpRecords.forEach(record -> sendRouteUpdateToChannel(true, |
| record.ipPrefix(), ch)); |
| } |
| } |
| |
| private void sendRouteUpdateToChannel(boolean isAdd, IpPrefix prefix, Channel ch) { |
| |
| if (!pdPushEnabled) { |
| return; |
| } |
| |
| try { |
| int raLength; |
| short addrFamily; |
| IpAddress pdPushNextHop; |
| |
| // Build route attributes. |
| if (prefix.isIp4()) { |
| if (pdPushNextHopIPv4 == null) { |
| log.info("Prefix not pushed because ipv4 next-hop is null."); |
| return; |
| } |
| pdPushNextHop = pdPushNextHopIPv4; |
| raLength = Ip4Address.BYTE_LENGTH + RouteAttribute.ROUTE_ATTRIBUTE_HEADER_LENGTH; |
| addrFamily = RtNetlink.RT_ADDRESS_FAMILY_INET; |
| } else { |
| if (pdPushNextHopIPv6 == null) { |
| log.info("Prefix not pushed because ipv6 next-hop is null."); |
| return; |
| } |
| pdPushNextHop = pdPushNextHopIPv6; |
| raLength = Ip6Address.BYTE_LENGTH + RouteAttribute.ROUTE_ATTRIBUTE_HEADER_LENGTH; |
| addrFamily = RtNetlink.RT_ADDRESS_FAMILY_INET6; |
| } |
| |
| RouteAttributeDst raDst = RouteAttributeDst.builder() |
| .length(raLength) |
| .type(RouteAttribute.RTA_DST) |
| .dstAddress(prefix.address()) |
| .build(); |
| |
| RouteAttributeGateway raGateway = RouteAttributeGateway.builder() |
| .length(raLength) |
| .type(RouteAttribute.RTA_GATEWAY) |
| .gateway(pdPushNextHop) |
| .build(); |
| |
| // Build RtNetlink. |
| RtNetlink rtNetlink = RtNetlink.builder() |
| .addressFamily(addrFamily) |
| .dstLength(prefix.prefixLength()) |
| .routeAttribute(raDst) |
| .routeAttribute(raGateway) |
| .build(); |
| |
| // Build Netlink. |
| int messageLength = raDst.length() + raGateway.length() + |
| RtNetlink.RT_NETLINK_LENGTH + Netlink.NETLINK_HEADER_LENGTH; |
| Netlink netLink = Netlink.builder() |
| .length(messageLength) |
| .type(isAdd ? NetlinkMessageType.RTM_NEWROUTE : NetlinkMessageType.RTM_DELROUTE) |
| .flags(Netlink.NETLINK_REQUEST | Netlink.NETLINK_CREATE) |
| .rtNetlink(rtNetlink) |
| .build(); |
| |
| // Build FpmHeader. |
| messageLength += FpmHeader.FPM_HEADER_LENGTH; |
| FpmHeader fpmMessage = FpmHeader.builder() |
| .version(FpmHeader.FPM_VERSION_1) |
| .type(FpmHeader.FPM_TYPE_NETLINK) |
| .length(messageLength) |
| .netlink(netLink) |
| .build(); |
| |
| // Encode message in a channel buffer and transmit. |
| ch.write(fpmMessage.encode()); |
| |
| } catch (RuntimeException e) { |
| log.info("Route not sent over fpm connection."); |
| } |
| } |
| |
| private void sendRouteUpdate(boolean isAdd, IpPrefix prefix) { |
| |
| for (Channel ch : allChannels) { |
| sendRouteUpdateToChannel(isAdd, prefix, ch); |
| } |
| } |
| |
| public boolean isPdPushEnabled() { |
| return pdPushEnabled; |
| } |
| |
| private FpmPeerInfo toFpmInfo(FpmPeer peer, Collection<FpmConnectionInfo> connections) { |
| return new FpmPeerInfo(connections, |
| fpmRoutes.getOrDefault(peer, Collections.emptyMap()).size()); |
| } |
| |
| @Override |
| public Map<FpmPeer, FpmPeerInfo> peers() { |
| return peers.asJavaMap().entrySet().stream() |
| .collect(Collectors.toMap( |
| e -> e.getKey(), |
| e -> toFpmInfo(e.getKey(), e.getValue()))); |
| } |
| |
| private class InternalFpmListener implements FpmListener { |
| @Override |
| public void fpmMessage(FpmPeer peer, FpmHeader fpmMessage) { |
| FpmManager.this.fpmMessage(peer, fpmMessage); |
| } |
| |
| @Override |
| public boolean peerConnected(FpmPeer peer) { |
| if (peers.keySet().contains(peer)) { |
| return false; |
| } |
| |
| NodeId localNode = clusterService.getLocalNode().id(); |
| peers.compute(peer, (p, infos) -> { |
| if (infos == null) { |
| infos = new HashSet<>(); |
| } |
| |
| infos.add(new FpmConnectionInfo(localNode, peer, System.currentTimeMillis())); |
| localPeers.put(peer, infos); |
| return infos; |
| }); |
| |
| fpmRoutes.computeIfAbsent(peer, p -> new ConcurrentHashMap<>()); |
| return true; |
| } |
| |
| @Override |
| public void peerDisconnected(FpmPeer peer) { |
| log.info("FPM connection to {} went down", peer); |
| |
| if (clearRoutes) { |
| clearRoutes(peer); |
| } |
| |
| peers.compute(peer, (p, infos) -> { |
| if (infos == null) { |
| return null; |
| } |
| |
| infos.stream() |
| .filter(i -> i.connectedTo().equals(clusterService.getLocalNode().id())) |
| .findAny() |
| .ifPresent(i -> { |
| infos.remove(i); |
| localPeers.get(peer).remove(i); |
| }); |
| |
| if (infos.isEmpty()) { |
| return null; |
| } |
| |
| return infos; |
| }); |
| } |
| } |
| |
| /** |
| * Adds a channel to the channel group. |
| * |
| * @param channel the channel to add |
| */ |
| public void addSessionChannel(Channel channel) { |
| allChannels.add(channel); |
| } |
| |
| /** |
| * Removes a channel from the channel group. |
| * |
| * @param channel the channel to remove |
| */ |
| public void removeSessionChannel(Channel channel) { |
| allChannels.remove(channel); |
| } |
| |
| /** |
| * Store delegate for Fpm Prefix store. |
| * Handles Fpm prefix store event. |
| */ |
| class FpmPrefixStoreDelegate implements StoreDelegate<FpmPrefixStoreEvent> { |
| |
| @Override |
| public void notify(FpmPrefixStoreEvent e) { |
| |
| log.trace("FpmPrefixStoreEvent notify"); |
| |
| FpmRecord record = e.subject(); |
| switch (e.type()) { |
| case ADD: |
| sendRouteUpdate(true, record.ipPrefix()); |
| break; |
| case REMOVE: |
| sendRouteUpdate(false, record.ipPrefix()); |
| break; |
| default: |
| log.warn("unsupported store event type", e.type()); |
| return; |
| } |
| } |
| } |
| |
| private class InternalClusterListener implements ClusterEventListener { |
| @Override |
| public void event(ClusterEvent event) { |
| log.info("Receives ClusterEvent {} for {}", event.type(), event.subject().id()); |
| switch (event.type()) { |
| case INSTANCE_READY: |
| // When current node is healing from a network partition, |
| // seeing INSTANCE_READY means current node has the ability to read from the cluster, |
| // but it is possible that current node still can't write to the cluster at this moment. |
| // The AsyncDistributedLock is introduced to ensure we attempt to push FPM routes |
| // after current node can write. |
| // Adding 15 seconds retry for the current node to be able to write. |
| asyncLock.tryLock(Duration.ofSeconds(15)).whenComplete((result, error) -> { |
| if (result != null && result.isPresent()) { |
| log.debug("Lock obtained. Push local FPM routes to route store"); |
| // All FPM routes on current node will be pushed again even when current node is not |
| // the one that becomes READY. A better way is to do this only on the minority nodes. |
| pushFpmRoutes(); |
| localPeers.forEach((key, value) -> peers.put(key, value)); |
| asyncLock.unlock(); |
| } else { |
| log.debug("Fail to obtain lock. Abort."); |
| } |
| }); |
| break; |
| case INSTANCE_DEACTIVATED: |
| case INSTANCE_REMOVED: |
| ImmutableMap.copyOf(peers.asJavaMap()).forEach((key, value) -> { |
| if (value != null) { |
| value.stream() |
| .filter(i -> i.connectedTo().equals(event.subject().id())) |
| .findAny() |
| .ifPresent(value::remove); |
| |
| if (value.isEmpty()) { |
| peers.remove(key); |
| } |
| } |
| }); |
| break; |
| case INSTANCE_ADDED: |
| case INSTANCE_ACTIVATED: |
| default: |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public void pushFpmRoutes() { |
| Set<Route> routes = fpmRoutes.values().stream() |
| .map(Map::entrySet).flatMap(Set::stream).map(Map.Entry::getValue) |
| .collect(Collectors.toSet()); |
| updateRouteStore(routes, Lists.newArrayList()); |
| log.info("{} FPM routes have been updated to route store", routes.size()); |
| } |
| } |