| /* |
| * Copyright 2019-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.k8snetworking.impl; |
| |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import io.fabric8.kubernetes.api.model.EndpointAddress; |
| import io.fabric8.kubernetes.api.model.EndpointPort; |
| import io.fabric8.kubernetes.api.model.EndpointSubset; |
| import io.fabric8.kubernetes.api.model.Endpoints; |
| import io.fabric8.kubernetes.api.model.Pod; |
| import io.fabric8.kubernetes.api.model.Service; |
| import io.fabric8.kubernetes.api.model.ServicePort; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IPv4; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.MacAddress; |
| import org.onlab.packet.TpPort; |
| import org.onlab.util.Tools; |
| import org.onosproject.cfg.ComponentConfigService; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.LeadershipService; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.core.GroupId; |
| import org.onosproject.k8snetworking.api.K8sEndpointsEvent; |
| import org.onosproject.k8snetworking.api.K8sEndpointsListener; |
| import org.onosproject.k8snetworking.api.K8sEndpointsService; |
| import org.onosproject.k8snetworking.api.K8sFlowRuleService; |
| import org.onosproject.k8snetworking.api.K8sGroupRuleService; |
| import org.onosproject.k8snetworking.api.K8sNetwork; |
| import org.onosproject.k8snetworking.api.K8sNetworkEvent; |
| import org.onosproject.k8snetworking.api.K8sNetworkListener; |
| import org.onosproject.k8snetworking.api.K8sNetworkService; |
| import org.onosproject.k8snetworking.api.K8sPodService; |
| import org.onosproject.k8snetworking.api.K8sServiceEvent; |
| import org.onosproject.k8snetworking.api.K8sServiceListener; |
| import org.onosproject.k8snetworking.api.K8sServiceService; |
| import org.onosproject.k8snetworking.util.RulePopulatorUtil; |
| import org.onosproject.k8snetworking.util.RulePopulatorUtil.NiciraConnTrackTreatmentBuilder; |
| import org.onosproject.k8snode.api.K8sNode; |
| import org.onosproject.k8snode.api.K8sNodeEvent; |
| import org.onosproject.k8snode.api.K8sNodeListener; |
| import org.onosproject.k8snode.api.K8sNodeService; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.driver.DriverService; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.flow.criteria.ExtensionSelector; |
| import org.onosproject.net.flow.instructions.ExtensionTreatment; |
| import org.onosproject.net.group.GroupBucket; |
| import org.onosproject.store.service.StorageService; |
| import org.osgi.service.component.ComponentContext; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Modified; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.slf4j.Logger; |
| |
| import java.util.Dictionary; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| import java.util.stream.Collectors; |
| |
| import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.onosproject.k8snetworking.api.Constants.ACL_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.A_CLASS; |
| import static org.onosproject.k8snetworking.api.Constants.B_CLASS; |
| import static org.onosproject.k8snetworking.api.Constants.DST; |
| import static org.onosproject.k8snetworking.api.Constants.GROUPING_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID; |
| import static org.onosproject.k8snetworking.api.Constants.NAMESPACE_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.NAT_STATEFUL; |
| import static org.onosproject.k8snetworking.api.Constants.NAT_STATELESS; |
| import static org.onosproject.k8snetworking.api.Constants.NAT_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.NODE_IP_PREFIX; |
| import static org.onosproject.k8snetworking.api.Constants.POD_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_CIDR_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_CT_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_INTER_ROUTING_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_NAT_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.ROUTING_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.SERVICE_FAKE_MAC_STR; |
| import static org.onosproject.k8snetworking.api.Constants.SERVICE_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.SHIFTED_IP_CIDR; |
| import static org.onosproject.k8snetworking.api.Constants.SHIFTED_IP_PREFIX; |
| import static org.onosproject.k8snetworking.api.Constants.SRC; |
| import static org.onosproject.k8snetworking.api.Constants.STAT_EGRESS_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.TUN_ENTRY_TABLE; |
| import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.SERVICE_CIDR; |
| import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.SERVICE_IP_CIDR_DEFAULT; |
| import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.SERVICE_IP_NAT_MODE; |
| import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.SERVICE_IP_NAT_MODE_DEFAULT; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.getBclassIpPrefixFromCidr; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.nodeIpGatewayIpMap; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.podByIp; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.portNumberByName; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.tunnelPortNumByNetId; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.CT_NAT_DST_FLAG; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildGroupBucket; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildLoadExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildResubmitExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.computeCtMaskFlag; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.computeCtStateFlag; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.niciraConnTrackTreatmentBuilder; |
| import static org.onosproject.net.group.GroupDescription.Type.SELECT; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Handles the service IP to pod IP related translation traffic. |
| */ |
| @Component( |
| immediate = true, |
| property = { |
| SERVICE_IP_NAT_MODE + "=" + SERVICE_IP_NAT_MODE_DEFAULT, |
| SERVICE_CIDR + "=" + SERVICE_IP_CIDR_DEFAULT |
| } |
| ) |
| public class K8sServiceHandler { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private static final int HOST_CIDR_NUM = 32; |
| |
| private static final String CLUSTER_IP = "ClusterIP"; |
| private static final String TCP = "TCP"; |
| private static final String UDP = "UDP"; |
| private static final String SERVICE_IP_NAT_MODE = "serviceIpNatMode"; |
| |
| private static final String SERVICE_CIDR = "serviceCidr"; |
| private static final String NONE = "None"; |
| private static final String B_CLASS_SUFFIX = ".0.0/16"; |
| private static final String A_CLASS_SUFFIX = ".0.0.0/8"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected LeadershipService leadershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected DriverService driverService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected ComponentConfigService configService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sNetworkService k8sNetworkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sFlowRuleService k8sFlowRuleService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sGroupRuleService k8sGroupRuleService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sNodeService k8sNodeService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sEndpointsService k8sEndpointsService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sServiceService k8sServiceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sPodService k8sPodService; |
| |
| /** Service IP address translation mode. */ |
| private String serviceIpNatMode = SERVICE_IP_NAT_MODE_DEFAULT; |
| |
| /** Ranges of IP address of service VIP. */ |
| private String serviceCidr = SERVICE_IP_CIDR_DEFAULT; |
| |
| private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| private final InternalNodeEventListener internalNodeEventListener = |
| new InternalNodeEventListener(); |
| private final InternalK8sServiceListener internalK8sServiceListener = |
| new InternalK8sServiceListener(); |
| private final InternalK8sEndpointsListener internalK8sEndpointsListener = |
| new InternalK8sEndpointsListener(); |
| private final InternalK8sNetworkListener internalK8sNetworkListener = |
| new InternalK8sNetworkListener(); |
| |
| private ApplicationId appId; |
| private NodeId localNodeId; |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(K8S_NETWORKING_APP_ID); |
| configService.registerProperties(getClass()); |
| localNodeId = clusterService.getLocalNode().id(); |
| leadershipService.runForLeadership(appId.name()); |
| k8sNodeService.addListener(internalNodeEventListener); |
| k8sServiceService.addListener(internalK8sServiceListener); |
| k8sEndpointsService.addListener(internalK8sEndpointsListener); |
| k8sNetworkService.addListener(internalK8sNetworkListener); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| leadershipService.withdraw(appId.name()); |
| k8sNodeService.removeListener(internalNodeEventListener); |
| k8sServiceService.removeListener(internalK8sServiceListener); |
| k8sEndpointsService.removeListener(internalK8sEndpointsListener); |
| k8sNetworkService.removeListener(internalK8sNetworkListener); |
| configService.unregisterProperties(getClass(), false); |
| eventExecutor.shutdown(); |
| |
| log.info("Stopped"); |
| } |
| |
| @Modified |
| void modified(ComponentContext context) { |
| readComponentConfiguration(context); |
| |
| log.info("Modified"); |
| } |
| |
| private void setStatefulServiceNatRules(DeviceId deviceId, boolean install) { |
| // -trk CT rules |
| long ctUntrack = computeCtStateFlag(false, false, false); |
| long ctMaskUntrack = computeCtMaskFlag(true, false, false); |
| |
| k8sNetworkService.networks().forEach(n -> { |
| // TODO: need to provide a way to add multiple service IP CIDR ranges |
| setUntrack(deviceId, ctUntrack, ctMaskUntrack, n.cidr(), serviceCidr, |
| GROUPING_TABLE, NAT_TABLE, PRIORITY_CT_RULE, install); |
| setUntrack(deviceId, ctUntrack, ctMaskUntrack, n.cidr(), n.cidr(), |
| GROUPING_TABLE, NAMESPACE_TABLE, PRIORITY_CT_RULE, install); |
| }); |
| |
| // +trk-new CT rules |
| long ctTrackUnnew = computeCtStateFlag(true, false, false); |
| long ctMaskTrackUnnew = computeCtMaskFlag(true, true, false); |
| |
| setTrackEstablish(deviceId, ctTrackUnnew, ctMaskTrackUnnew, |
| NAT_TABLE, ROUTING_TABLE, PRIORITY_CT_RULE, install); |
| |
| // +trk+new CT rules |
| long ctTrackNew = computeCtStateFlag(true, true, false); |
| long ctMaskTrackNew = computeCtMaskFlag(true, true, false); |
| |
| k8sServiceService.services().stream() |
| .filter(s -> CLUSTER_IP.equals(s.getSpec().getType())) |
| .forEach(s -> setStatefulGroupFlowRules(deviceId, ctTrackNew, |
| ctMaskTrackNew, s, install)); |
| } |
| |
| private void setStatelessServiceNatRules(DeviceId deviceId, boolean install) { |
| |
| String srcPodCidr = k8sNetworkService.network( |
| k8sNodeService.node(deviceId).hostname()).cidr(); |
| String srcPodPrefix = getBclassIpPrefixFromCidr(srcPodCidr); |
| String fullSrcPodCidr = srcPodPrefix + B_CLASS_SUFFIX; |
| String fullSrcNodeCidr = NODE_IP_PREFIX + A_CLASS_SUFFIX; |
| |
| // src: POD -> dst: service (unNAT POD) grouping |
| setSrcDstCidrRules(deviceId, fullSrcPodCidr, serviceCidr, B_CLASS, null, |
| SHIFTED_IP_PREFIX, SRC, GROUPING_TABLE, SERVICE_TABLE, |
| PRIORITY_CT_RULE, install); |
| // src: POD (unNAT service) -> dst: shifted POD grouping |
| setSrcDstCidrRules(deviceId, fullSrcPodCidr, SHIFTED_IP_CIDR, B_CLASS, null, |
| srcPodPrefix, DST, GROUPING_TABLE, POD_TABLE, PRIORITY_CT_RULE, install); |
| |
| // src: node -> dst: service (unNAT POD) grouping |
| setSrcDstCidrRules(deviceId, fullSrcNodeCidr, serviceCidr, A_CLASS, |
| null, null, null, GROUPING_TABLE, SERVICE_TABLE, |
| PRIORITY_CT_RULE, install); |
| // src: POD (unNAT service) -> dst: node grouping |
| setSrcDstCidrRules(deviceId, fullSrcPodCidr, fullSrcNodeCidr, A_CLASS, |
| null, null, null, GROUPING_TABLE, POD_TABLE, |
| PRIORITY_CT_RULE, install); |
| |
| k8sNetworkService.networks().forEach(n -> { |
| setSrcDstCidrRules(deviceId, fullSrcPodCidr, n.cidr(), B_CLASS, |
| n.segmentId(), null, null, ROUTING_TABLE, |
| STAT_EGRESS_TABLE, PRIORITY_INTER_ROUTING_RULE, install); |
| }); |
| |
| // setup load balancing rules using group table |
| k8sServiceService.services().stream() |
| .filter(s -> CLUSTER_IP.equals(s.getSpec().getType())) |
| .forEach(s -> setStatelessGroupFlowRules(deviceId, s, install)); |
| } |
| |
| private void setSrcDstCidrRules(DeviceId deviceId, String srcCidr, |
| String dstCidr, String cidrClass, |
| String segId, String shiftPrefix, |
| String shiftType, int installTable, |
| int transitTable, int priority, |
| boolean install) { |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(IpPrefix.valueOf(srcCidr)) |
| .matchIPDst(IpPrefix.valueOf(dstCidr)) |
| .build(); |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| |
| if (segId != null) { |
| tBuilder.setTunnelId(Long.valueOf(segId)); |
| } |
| |
| if (shiftPrefix != null && shiftType != null) { |
| ExtensionTreatment loadTreatment = buildLoadExtension( |
| deviceService.getDevice(deviceId), cidrClass, shiftType, shiftPrefix); |
| tBuilder.extension(loadTreatment, deviceId); |
| } |
| |
| tBuilder.transition(transitTable); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| deviceId, |
| selector, |
| tBuilder.build(), |
| priority, |
| installTable, |
| install); |
| } |
| |
| /** |
| * Obtains the service port to endpoint address paired map. |
| * |
| * @param service kubernetes service |
| * @return a map where key is kubernetes service port, and value is the |
| * endpoint addresses that are associated with the service port |
| */ |
| private Map<ServicePort, Set<String>> getSportEpAddressMap(Service service) { |
| |
| Map<ServicePort, Set<String>> map = Maps.newConcurrentMap(); |
| |
| String serviceName = service.getMetadata().getName(); |
| List<Endpoints> endpointses = k8sEndpointsService.endpointses() |
| .stream() |
| .filter(ep -> serviceName.equals(ep.getMetadata().getName())) |
| .collect(Collectors.toList()); |
| |
| service.getSpec().getPorts().stream() |
| .filter(Objects::nonNull) |
| .filter(sp -> sp.getTargetPort() != null) |
| .filter(sp -> sp.getTargetPort().getIntVal() != null || |
| sp.getTargetPort().getStrVal() != null) |
| .forEach(sp -> { |
| Integer targetPortInt = sp.getTargetPort().getIntVal() != null ? |
| sp.getTargetPort().getIntVal() : 0; |
| String targetPortName = sp.getTargetPort().getStrVal() != null ? |
| sp.getTargetPort().getStrVal() : ""; |
| String targetProtocol = sp.getProtocol(); |
| |
| for (Endpoints endpoints : endpointses) { |
| for (EndpointSubset endpointSubset : endpoints.getSubsets()) { |
| |
| // in case service port name is specified but not port number |
| // we will lookup the container port number and use it |
| // as the target port number |
| if (!targetPortName.equals("") && targetPortInt == 0) { |
| for (EndpointAddress addr : endpointSubset.getAddresses()) { |
| Pod pod = podByIp(k8sPodService, addr.getIp()); |
| targetPortInt = portNumberByName(pod, targetPortName); |
| } |
| } |
| |
| if (targetPortInt == 0) { |
| continue; |
| } |
| |
| for (EndpointPort endpointPort : endpointSubset.getPorts()) { |
| if (targetProtocol.equals(endpointPort.getProtocol()) && |
| (targetPortInt.equals(endpointPort.getPort()) || |
| targetPortName.equals(endpointPort.getName()))) { |
| Set<String> addresses = endpointSubset.getAddresses() |
| .stream().map(EndpointAddress::getIp) |
| .collect(Collectors.toSet()); |
| map.put(sp, addresses); |
| } |
| } |
| } |
| } |
| }); |
| |
| return map; |
| } |
| |
| private void setGroupBuckets(Service service, boolean install) { |
| Map<ServicePort, Set<String>> spEpasMap = getSportEpAddressMap(service); |
| Map<ServicePort, List<GroupBucket>> spGrpBkts = Maps.newConcurrentMap(); |
| Map<String, String> nodeIpGatewayIpMap = |
| nodeIpGatewayIpMap(k8sNodeService, k8sNetworkService); |
| |
| for (K8sNode node : k8sNodeService.completeNodes()) { |
| spEpasMap.forEach((sp, epas) -> { |
| List<GroupBucket> bkts = Lists.newArrayList(); |
| |
| for (String ip : epas) { |
| GroupBucket bkt = buildBuckets(node.intgBridge(), |
| nodeIpGatewayIpMap.getOrDefault(ip, ip), sp); |
| |
| if (bkt == null) { |
| continue; |
| } |
| |
| if (install) { |
| bkts.add(bkt); |
| } else { |
| bkts.remove(bkt); |
| } |
| } |
| |
| spGrpBkts.put(sp, bkts); |
| }); |
| |
| String serviceIp = service.getSpec().getClusterIP(); |
| spGrpBkts.forEach((sp, bkts) -> { |
| String svcStr = servicePortStr(serviceIp, sp.getPort(), sp.getProtocol()); |
| int groupId = svcStr.hashCode(); |
| |
| if (bkts.size() > 0) { |
| k8sGroupRuleService.setBuckets(appId, node.intgBridge(), groupId, bkts); |
| } |
| }); |
| |
| spEpasMap.forEach((sp, epas) -> |
| // add flow rules for unshifting IP domain |
| epas.forEach(epa -> { |
| |
| String podIp = nodeIpGatewayIpMap.getOrDefault(epa, epa); |
| |
| int targetPort; |
| if (sp.getTargetPort().getIntVal() == null) { |
| Pod pod = podByIp(k8sPodService, podIp); |
| targetPort = portNumberByName(pod, sp.getTargetPort().getStrVal()); |
| } else { |
| targetPort = sp.getTargetPort().getIntVal(); |
| } |
| |
| if (targetPort != 0) { |
| setUnshiftDomainRules(node.intgBridge(), POD_TABLE, |
| PRIORITY_NAT_RULE, serviceIp, sp.getPort(), |
| sp.getProtocol(), podIp, |
| targetPort, install); |
| } |
| }) |
| ); |
| } |
| } |
| |
| private GroupBucket buildBuckets(DeviceId deviceId, String podIpStr, ServicePort sp) { |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder() |
| .setIpDst(IpAddress.valueOf(podIpStr)); |
| |
| int targetPort; |
| if (sp.getTargetPort().getIntVal() == null) { |
| Pod pod = podByIp(k8sPodService, podIpStr); |
| targetPort = portNumberByName(pod, sp.getTargetPort().getStrVal()); |
| } else { |
| targetPort = sp.getTargetPort().getIntVal(); |
| } |
| |
| if (targetPort == 0) { |
| return null; |
| } |
| |
| if (TCP.equals(sp.getProtocol())) { |
| tBuilder.setTcpDst(TpPort.tpPort(targetPort)); |
| } else if (UDP.equals(sp.getProtocol())) { |
| tBuilder.setUdpDst(TpPort.tpPort(targetPort)); |
| } |
| |
| ExtensionTreatment resubmitTreatment = buildResubmitExtension( |
| deviceService.getDevice(deviceId), ACL_TABLE); |
| tBuilder.extension(resubmitTreatment, deviceId); |
| |
| // TODO: need to adjust group bucket weight by considering POD locality |
| return buildGroupBucket(tBuilder.build(), SELECT, (short) -1); |
| } |
| |
| private synchronized void setStatelessGroupFlowRules(DeviceId deviceId, |
| Service service, |
| boolean install) { |
| Set<ServicePort> sps = service.getSpec().getPorts().stream() |
| .filter(Objects::nonNull) |
| .filter(sp -> sp.getTargetPort() != null) |
| .filter(sp -> sp.getTargetPort().getIntVal() != null || |
| sp.getTargetPort().getStrVal() != null) |
| .collect(Collectors.toSet()); |
| |
| String serviceIp = service.getSpec().getClusterIP(); |
| sps.forEach(sp -> { |
| String svcStr = servicePortStr(serviceIp, sp.getPort(), sp.getProtocol()); |
| int groupId = svcStr.hashCode(); |
| |
| if (install) { |
| |
| // add group table rules |
| k8sGroupRuleService.setRule(appId, deviceId, groupId, |
| SELECT, Lists.newArrayList(), true); |
| |
| log.info("Adding group rule {}", groupId); |
| |
| // if we failed to add group rule, we will not install flow rules |
| // as this might cause rule inconsistency |
| if (k8sGroupRuleService.hasGroup(deviceId, groupId)) { |
| // add flow rules for shifting IP domain |
| setShiftDomainRules(deviceId, SERVICE_TABLE, groupId, |
| PRIORITY_NAT_RULE, serviceIp, sp.getPort(), |
| sp.getProtocol(), true); |
| } |
| } else { |
| // remove flow rules for shifting IP domain |
| setShiftDomainRules(deviceId, SERVICE_TABLE, groupId, |
| PRIORITY_NAT_RULE, serviceIp, sp.getPort(), |
| sp.getProtocol(), false); |
| |
| // remove group table rules |
| k8sGroupRuleService.setRule(appId, deviceId, groupId, |
| SELECT, Lists.newArrayList(), false); |
| |
| log.info("Removing group rule {}", groupId); |
| } |
| }); |
| } |
| |
| private void setShiftDomainRules(DeviceId deviceId, int installTable, |
| int groupId, int priority, String serviceIp, |
| int servicePort, String protocol, boolean install) { |
| |
| if (serviceIp == null || NONE.equals(serviceIp)) { |
| return; |
| } |
| |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf(IpAddress.valueOf(serviceIp), HOST_CIDR_NUM)); |
| |
| if (TCP.equals(protocol)) { |
| sBuilder.matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchTcpDst(TpPort.tpPort(servicePort)); |
| } else if (UDP.equals(protocol)) { |
| sBuilder.matchIPProtocol(IPv4.PROTOCOL_UDP) |
| .matchUdpDst(TpPort.tpPort(servicePort)); |
| } |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .group(GroupId.valueOf(groupId)) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| deviceId, |
| sBuilder.build(), |
| treatment, |
| priority, |
| installTable, |
| install); |
| } |
| |
| private void setUnshiftDomainRules(DeviceId deviceId, int installTable, |
| int priority, String serviceIp, |
| int servicePort, String protocol, |
| String podIp, int podPort, boolean install) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(IpPrefix.valueOf(IpAddress.valueOf(podIp), HOST_CIDR_NUM)); |
| |
| if (TCP.equals(protocol)) { |
| sBuilder.matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchTcpSrc(TpPort.tpPort(podPort)); |
| } else if (UDP.equals(protocol)) { |
| sBuilder.matchIPProtocol(IPv4.PROTOCOL_UDP) |
| .matchUdpSrc(TpPort.tpPort(podPort)); |
| } |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder() |
| .setIpSrc(IpAddress.valueOf(serviceIp)) |
| .transition(ACL_TABLE); |
| |
| if (TCP.equals(protocol)) { |
| tBuilder.setTcpSrc(TpPort.tpPort(servicePort)); |
| } else if (UDP.equals(protocol)) { |
| tBuilder.setUdpSrc(TpPort.tpPort(servicePort)); |
| } |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| deviceId, |
| sBuilder.build(), |
| tBuilder.build(), |
| priority, |
| installTable, |
| install); |
| } |
| |
| private void setCidrRoutingRule(IpPrefix prefix, MacAddress mac, |
| K8sNetwork network, boolean install) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(prefix) |
| .matchIPDst(IpPrefix.valueOf(network.cidr())); |
| |
| k8sNodeService.completeNodes().forEach(n -> { |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder() |
| .setTunnelId(Long.valueOf(network.segmentId())); |
| |
| if (n.hostname().equals(network.name())) { |
| if (mac != null) { |
| tBuilder.setEthSrc(mac); |
| } |
| tBuilder.transition(STAT_EGRESS_TABLE); |
| } else { |
| K8sNode localNode = k8sNodeService.node(network.name()); |
| |
| tBuilder.setOutput(n.intgToTunPortNum()); |
| |
| PortNumber portNum = tunnelPortNumByNetId(network.networkId(), |
| k8sNetworkService, n); |
| |
| // install rules into tunnel bridge |
| TrafficTreatment treatmentToRemote = DefaultTrafficTreatment.builder() |
| .extension(buildExtension( |
| deviceService, |
| n.tunBridge(), |
| localNode.dataIp().getIp4Address()), |
| n.tunBridge()) |
| .setTunnelId(Long.valueOf(network.segmentId())) |
| .setOutput(portNum) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| n.tunBridge(), |
| sBuilder.build(), |
| treatmentToRemote, |
| PRIORITY_CIDR_RULE, |
| TUN_ENTRY_TABLE, |
| install |
| ); |
| } |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| n.intgBridge(), |
| sBuilder.build(), |
| tBuilder.build(), |
| PRIORITY_CIDR_RULE, |
| ROUTING_TABLE, |
| install |
| ); |
| }); |
| } |
| |
| private void setupServiceDefaultRule(K8sNetwork k8sNetwork, boolean install) { |
| setCidrRoutingRule(IpPrefix.valueOf(serviceCidr), |
| MacAddress.valueOf(SERVICE_FAKE_MAC_STR), k8sNetwork, install); |
| } |
| |
| private void setStatefulGroupFlowRules(DeviceId deviceId, long ctState, |
| long ctMask, Service service, |
| boolean install) { |
| List<GroupBucket> buckets = Lists.newArrayList(); |
| |
| String serviceName = service.getMetadata().getName(); |
| String serviceIp = service.getSpec().getClusterIP(); |
| |
| // TODO: multi-ports case should be addressed |
| Integer servicePort = service.getSpec().getPorts().get(0).getPort(); |
| String serviceProtocol = service.getSpec().getPorts().get(0).getProtocol(); |
| |
| String svcStr = servicePortStr(serviceIp, servicePort, serviceProtocol); |
| int groupId = svcStr.hashCode(); |
| |
| List<Endpoints> endpointses = k8sEndpointsService.endpointses() |
| .stream() |
| .filter(ep -> serviceName.equals(ep.getMetadata().getName())) |
| .collect(Collectors.toList()); |
| |
| Map<String, String> nodeIpGatewayIpMap = |
| nodeIpGatewayIpMap(k8sNodeService, k8sNetworkService); |
| |
| for (Endpoints endpoints : endpointses) { |
| for (EndpointSubset endpointSubset : endpoints.getSubsets()) { |
| List<EndpointPort> ports = endpointSubset.getPorts() |
| .stream() |
| .filter(p -> p.getProtocol().equals(TCP)) |
| .collect(Collectors.toList()); |
| |
| for (EndpointAddress address : endpointSubset.getAddresses()) { |
| String podIp = nodeIpGatewayIpMap.containsKey(address.getIp()) ? |
| nodeIpGatewayIpMap.get(address.getIp()) : address.getIp(); |
| |
| NiciraConnTrackTreatmentBuilder connTreatmentBuilder = |
| niciraConnTrackTreatmentBuilder(driverService, deviceId) |
| .commit(true) |
| .natAction(true) |
| .natIp(IpAddress.valueOf(podIp)) |
| .natFlag(CT_NAT_DST_FLAG); |
| |
| ports.forEach(p -> { |
| ExtensionTreatment ctNatTreatment = connTreatmentBuilder |
| .natPortMin(TpPort.tpPort(p.getPort())) |
| .natPortMax(TpPort.tpPort(p.getPort())) |
| .build(); |
| ExtensionTreatment resubmitTreatment = buildResubmitExtension( |
| deviceService.getDevice(deviceId), ACL_TABLE); |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .extension(ctNatTreatment, deviceId) |
| .extension(resubmitTreatment, deviceId) |
| .build(); |
| buckets.add(buildGroupBucket(treatment, SELECT, (short) -1)); |
| }); |
| } |
| } |
| } |
| |
| if (!buckets.isEmpty()) { |
| k8sGroupRuleService.setRule(appId, deviceId, groupId, SELECT, buckets, install); |
| |
| setTrackNew(deviceId, ctState, ctMask, IpAddress.valueOf(serviceIp), |
| TpPort.tpPort(servicePort), NAT_TABLE, groupId, |
| PRIORITY_CT_RULE, install); |
| } |
| } |
| |
| private void setUntrack(DeviceId deviceId, long ctState, long ctMask, |
| String srcCidr, String dstCidr, int installTable, |
| int transitTable, int priority, boolean install) { |
| ExtensionSelector esCtSate = RulePopulatorUtil |
| .buildCtExtensionSelector(driverService, deviceId, ctState, ctMask); |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(IpPrefix.valueOf(srcCidr)) |
| .matchIPDst(IpPrefix.valueOf(dstCidr)) |
| .extension(esCtSate, deviceId) |
| .build(); |
| |
| NiciraConnTrackTreatmentBuilder connTreatmentBuilder = |
| niciraConnTrackTreatmentBuilder(driverService, deviceId) |
| .natAction(false) |
| .commit(false) |
| .table((short) transitTable); |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .extension(connTreatmentBuilder.build(), deviceId) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| deviceId, |
| selector, |
| treatment, |
| priority, |
| installTable, |
| install); |
| } |
| |
| private void setTrackNew(DeviceId deviceId, long ctState, long ctMask, |
| IpAddress dstIp, TpPort dstPort, int installTable, |
| int groupId, int priority, boolean install) { |
| ExtensionSelector esCtSate = RulePopulatorUtil |
| .buildCtExtensionSelector(driverService, deviceId, ctState, ctMask); |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf(dstIp, HOST_CIDR_NUM)) |
| .matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchTcpDst(dstPort) |
| .extension(esCtSate, deviceId) |
| .build(); |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .group(GroupId.valueOf(groupId)) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| deviceId, |
| selector, |
| treatment, |
| priority, |
| installTable, |
| install); |
| } |
| |
| private void setTrackEstablish(DeviceId deviceId, long ctState, long ctMask, |
| int installTable, int transitTable, |
| int priority, boolean install) { |
| ExtensionSelector esCtSate = RulePopulatorUtil |
| .buildCtExtensionSelector(driverService, deviceId, ctState, ctMask); |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .extension(esCtSate, deviceId) |
| .build(); |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .transition(transitTable) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| deviceId, |
| selector, |
| treatment, |
| priority, |
| installTable, |
| install); |
| } |
| |
| private void setEndpointsRules(Endpoints endpoints, boolean install) { |
| String appName = endpoints.getMetadata().getName(); |
| Service service = k8sServiceService.services().stream().filter(s -> |
| appName.equals(s.getMetadata().getName())) |
| .findFirst().orElse(null); |
| |
| if (service == null) { |
| return; |
| } |
| |
| setGroupBuckets(service, install); |
| } |
| |
| private String servicePortStr(String ip, int port, String protocol) { |
| return ip + "_" + port + "_" + protocol; |
| } |
| |
| /** |
| * Extracts properties from the component configuration context. |
| * |
| * @param context the component context |
| */ |
| private void readComponentConfiguration(ComponentContext context) { |
| Dictionary<?, ?> properties = context.getProperties(); |
| |
| String updatedNatMode = Tools.get(properties, SERVICE_IP_NAT_MODE); |
| serviceIpNatMode = updatedNatMode != null ? updatedNatMode : SERVICE_IP_NAT_MODE_DEFAULT; |
| log.info("Configured. Service IP NAT mode is {}", serviceIpNatMode); |
| |
| String updatedServiceCidr = Tools.get(properties, SERVICE_CIDR); |
| serviceCidr = updatedServiceCidr != null ? |
| updatedServiceCidr : SERVICE_IP_CIDR_DEFAULT; |
| log.info("Configured. Service VIP range is {}", serviceCidr); |
| } |
| |
| private void setServiceNatRules(DeviceId deviceId, boolean install) { |
| if (NAT_STATEFUL.equals(serviceIpNatMode)) { |
| setStatefulServiceNatRules(deviceId, install); |
| } else if (NAT_STATELESS.equals(serviceIpNatMode)) { |
| setStatelessServiceNatRules(deviceId, install); |
| } else { |
| log.warn("Service IP NAT mode was not configured!"); |
| } |
| } |
| |
| private class InternalK8sServiceListener implements K8sServiceListener { |
| |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sServiceEvent event) { |
| switch (event.type()) { |
| case K8S_SERVICE_CREATED: |
| case K8S_SERVICE_UPDATED: |
| eventExecutor.execute(() -> processServiceCreation(event.subject())); |
| break; |
| case K8S_SERVICE_REMOVED: |
| eventExecutor.execute(() -> processServiceRemoval(event.subject())); |
| break; |
| default: |
| // do nothing |
| break; |
| } |
| } |
| |
| private void processServiceCreation(Service service) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| if (NAT_STATEFUL.equals(serviceIpNatMode)) { |
| long ctTrackNew = computeCtStateFlag(true, true, false); |
| long ctMaskTrackNew = computeCtMaskFlag(true, true, false); |
| |
| k8sNodeService.completeNodes().forEach(n -> |
| setStatefulGroupFlowRules(n.intgBridge(), ctTrackNew, |
| ctMaskTrackNew, service, true)); |
| } else if (NAT_STATELESS.equals(serviceIpNatMode)) { |
| k8sNodeService.completeNodes().forEach(n -> |
| setStatelessGroupFlowRules(n.intgBridge(), service, true)); |
| } |
| } |
| |
| private void processServiceRemoval(Service service) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| if (NAT_STATEFUL.equals(serviceIpNatMode)) { |
| long ctTrackNew = computeCtStateFlag(true, true, false); |
| long ctMaskTrackNew = computeCtMaskFlag(true, true, false); |
| |
| k8sNodeService.completeNodes().forEach(n -> |
| setStatefulGroupFlowRules(n.intgBridge(), ctTrackNew, |
| ctMaskTrackNew, service, false)); |
| } else if (NAT_STATELESS.equals(serviceIpNatMode)) { |
| k8sNodeService.completeNodes().forEach(n -> |
| setStatelessGroupFlowRules(n.intgBridge(), service, false)); |
| } |
| } |
| } |
| |
| private class InternalK8sEndpointsListener implements K8sEndpointsListener { |
| |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sEndpointsEvent event) { |
| Endpoints endpoints = event.subject(); |
| |
| switch (event.type()) { |
| case K8S_ENDPOINTS_CREATED: |
| case K8S_ENDPOINTS_UPDATED: |
| eventExecutor.execute(() -> processEndpointsCreation(endpoints)); |
| break; |
| case K8S_ENDPOINTS_REMOVED: |
| eventExecutor.execute(() -> processEndpointsRemoval(endpoints)); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| private void processEndpointsCreation(Endpoints endpoints) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setEndpointsRules(endpoints, true); |
| } |
| |
| private void processEndpointsRemoval(Endpoints endpoints) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setEndpointsRules(endpoints, false); |
| } |
| } |
| |
| private class InternalNodeEventListener implements K8sNodeListener { |
| |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sNodeEvent event) { |
| K8sNode k8sNode = event.subject(); |
| switch (event.type()) { |
| case K8S_NODE_COMPLETE: |
| eventExecutor.execute(() -> processNodeCompletion(k8sNode)); |
| break; |
| case K8S_NODE_INCOMPLETE: |
| case K8S_NODE_REMOVED: |
| default: |
| break; |
| } |
| } |
| |
| private void processNodeCompletion(K8sNode node) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setServiceNatRules(node.intgBridge(), true); |
| k8sEndpointsService.endpointses().forEach(e -> setEndpointsRules(e, true)); |
| k8sNetworkService.networks().forEach(n -> setupServiceDefaultRule(n, true)); |
| } |
| } |
| |
| private class InternalK8sNetworkListener implements K8sNetworkListener { |
| |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sNetworkEvent event) { |
| switch (event.type()) { |
| case K8S_NETWORK_CREATED: |
| eventExecutor.execute(() -> processNetworkCreation(event.subject())); |
| break; |
| case K8S_NETWORK_UPDATED: |
| case K8S_NETWORK_REMOVED: |
| default: |
| break; |
| } |
| } |
| |
| private void processNetworkCreation(K8sNetwork network) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setupServiceDefaultRule(network, true); |
| } |
| } |
| } |