| /* |
| * 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 org.apache.commons.lang.StringUtils; |
| import org.onlab.packet.ARP; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.Ip4Address; |
| import org.onlab.packet.IpPrefix; |
| 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.k8snetworking.api.K8sFlowRuleService; |
| 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.k8snode.api.K8sHost; |
| import org.onosproject.k8snode.api.K8sHostService; |
| 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.Device; |
| 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.instructions.ExtensionTreatment; |
| import org.onosproject.net.packet.PacketService; |
| 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.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.slf4j.Logger; |
| |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| |
| import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.onosproject.k8snetworking.api.Constants.B_CLASS; |
| import static org.onosproject.k8snetworking.api.Constants.DST; |
| import static org.onosproject.k8snetworking.api.Constants.HOST_PREFIX; |
| import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID; |
| import static org.onosproject.k8snetworking.api.Constants.LOCAL_ENTRY_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.NODE_IP_PREFIX; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_ARP_REPLY_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_GATEWAY_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_INTER_NODE_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_LOCAL_BRIDGE_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.ROUTING_TABLE; |
| import static org.onosproject.k8snetworking.api.Constants.SHIFTED_IP_PREFIX; |
| import static org.onosproject.k8snetworking.api.Constants.SHIFTED_LOCAL_IP_PREFIX; |
| import static org.onosproject.k8snetworking.api.Constants.SRC; |
| import static org.onosproject.k8snetworking.api.Constants.TUN_ENTRY_TABLE; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.shiftIpDomain; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.tunnelPortNumByNetId; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildLoadExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildMoveArpShaToThaExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildMoveArpSpaToTpaExtension; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildMoveEthSrcToDstExtension; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Populates switching flow rules on OVS for providing the connectivity between |
| * container and network gateway. |
| */ |
| @Component(immediate = true) |
| public class K8sSwitchingGatewayHandler { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private static final String REQUEST = "req"; |
| private static final String REPLY = "rep"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected LeadershipService leadershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected DriverService driverService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sFlowRuleService k8sFlowRuleService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sNetworkService k8sNetworkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sNodeService k8sNodeService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sHostService k8sHostService; |
| |
| private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| private final InternalK8sNetworkListener k8sNetworkListener = |
| new InternalK8sNetworkListener(); |
| private final InternalK8sNodeListener k8sNodeListener = |
| new InternalK8sNodeListener(); |
| |
| private ApplicationId appId; |
| private NodeId localNodeId; |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(K8S_NETWORKING_APP_ID); |
| k8sNetworkService.addListener(k8sNetworkListener); |
| k8sNodeService.addListener(k8sNodeListener); |
| localNodeId = clusterService.getLocalNode().id(); |
| leadershipService.runForLeadership(appId.name()); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| k8sNodeService.removeListener(k8sNodeListener); |
| k8sNetworkService.removeListener(k8sNetworkListener); |
| leadershipService.withdraw(appId.name()); |
| eventExecutor.shutdown(); |
| |
| log.info("Stopped"); |
| } |
| |
| private void setGatewayRule(K8sNetwork k8sNetwork, boolean install) { |
| for (K8sNode node : k8sNodeService.completeNodes()) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf(k8sNetwork.gatewayIp(), |
| HOST_PREFIX)); |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| |
| if (node.hostname().equals(k8sNetwork.name())) { |
| tBuilder.setEthDst(node.intgBridgeMac()) |
| .setOutput(node.intgEntryPortNum()); |
| } else { |
| K8sNode localNode = k8sNodeService.node(k8sNetwork.name()); |
| |
| tBuilder.setOutput(node.intgToTunPortNum()); |
| |
| // install flows into tunnel bridge |
| PortNumber portNum = tunnelPortNumByNetId(k8sNetwork.networkId(), |
| k8sNetworkService, node); |
| TrafficTreatment treatmentToRemote = DefaultTrafficTreatment.builder() |
| .extension(buildExtension( |
| deviceService, |
| node.tunBridge(), |
| localNode.dataIp().getIp4Address()), |
| node.tunBridge()) |
| .setTunnelId(Long.valueOf(k8sNetwork.segmentId())) |
| .setOutput(portNum) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| node.tunBridge(), |
| sBuilder.build(), |
| treatmentToRemote, |
| PRIORITY_GATEWAY_RULE, |
| TUN_ENTRY_TABLE, |
| install); |
| } |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| node.intgBridge(), |
| sBuilder.build(), |
| tBuilder.build(), |
| PRIORITY_GATEWAY_RULE, |
| ROUTING_TABLE, |
| install); |
| |
| if (node.hostname().equals(k8sNetwork.name())) { |
| sBuilder = DefaultTrafficSelector.builder() |
| .matchInPort(node.intgEntryPortNum()) |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf(k8sNetwork.gatewayIp(), |
| HOST_PREFIX)); |
| |
| tBuilder = DefaultTrafficTreatment.builder() |
| .setOutput(node.intgToLocalPatchPortNum()); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| node.intgBridge(), |
| sBuilder.build(), |
| tBuilder.build(), |
| PRIORITY_LOCAL_BRIDGE_RULE, |
| ROUTING_TABLE, |
| install); |
| } |
| } |
| } |
| |
| private void setInterNodeRoutingRules(K8sNode srcNode, boolean install) { |
| if (srcNode == null) { |
| return; |
| } |
| |
| for (K8sNode dstNode : k8sNodeService.nodes()) { |
| if (StringUtils.equals(srcNode.hostname(), dstNode.hostname())) { |
| continue; |
| } |
| |
| boolean sameHost = false; |
| for (K8sHost host : k8sHostService.completeHosts()) { |
| Set<String> nodeNames = host.nodeNames(); |
| // if the src and dst nodes located in the same hosts, |
| // we simply do not tunnel the traffic, instead we route the traffic |
| if (nodeNames.contains(srcNode.hostname()) && |
| nodeNames.contains(dstNode.hostname())) { |
| sameHost = true; |
| } |
| } |
| |
| if (sameHost) { |
| TrafficSelector originalSelector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(IpPrefix.valueOf(srcNode.podCidr())) |
| .matchIPDst(IpPrefix.valueOf(dstNode.podCidr())) |
| .build(); |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .setOutput(dstNode.tunToIntgPortNum()) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| dstNode.tunBridge(), |
| originalSelector, |
| treatment, |
| PRIORITY_INTER_NODE_RULE, |
| TUN_ENTRY_TABLE, |
| install); |
| |
| TrafficSelector transformedSelector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(IpPrefix.valueOf(shiftIpDomain(srcNode.podCidr(), SHIFTED_IP_PREFIX))) |
| .matchIPDst(IpPrefix.valueOf(dstNode.podCidr())) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| dstNode.tunBridge(), |
| transformedSelector, |
| treatment, |
| PRIORITY_INTER_NODE_RULE, |
| TUN_ENTRY_TABLE, |
| install); |
| |
| String nodeIpPrefix = NODE_IP_PREFIX + ".0.0.0/8"; |
| |
| TrafficSelector nodePortSelector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPSrc(IpPrefix.valueOf(nodeIpPrefix)) |
| .matchIPDst(IpPrefix.valueOf(dstNode.podCidr())) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| dstNode.tunBridge(), |
| nodePortSelector, |
| treatment, |
| PRIORITY_INTER_NODE_RULE, |
| TUN_ENTRY_TABLE, |
| install); |
| } |
| } |
| } |
| |
| private void setLocalBridgeRules(K8sNetwork k8sNetwork, boolean install) { |
| for (K8sNode node : k8sNodeService.completeNodes()) { |
| if (node.hostname().equals(k8sNetwork.name())) { |
| setLocalBridgeRule(k8sNetwork, node, REQUEST, install); |
| setLocalBridgeRule(k8sNetwork, node, REPLY, install); |
| } |
| } |
| } |
| |
| private void setLocalBridgeRule(K8sNetwork k8sNetwork, K8sNode k8sNode, |
| String type, boolean install) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4); |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| |
| ExtensionTreatment loadTreatment = null; |
| |
| if (REQUEST.equals(type)) { |
| loadTreatment = buildLoadExtension(deviceService.getDevice( |
| k8sNode.localBridge()), B_CLASS, SRC, SHIFTED_LOCAL_IP_PREFIX); |
| } |
| |
| if (REPLY.equals(type)) { |
| loadTreatment = buildLoadExtension(deviceService.getDevice( |
| k8sNode.localBridge()), B_CLASS, DST, SHIFTED_IP_PREFIX); |
| } |
| |
| tBuilder.extension(loadTreatment, k8sNode.localBridge()); |
| |
| if (REQUEST.equals(type)) { |
| sBuilder.matchIPDst(IpPrefix.valueOf(k8sNetwork.gatewayIp(), |
| HOST_PREFIX)); |
| tBuilder.setOutput(PortNumber.LOCAL); |
| } |
| |
| if (REPLY.equals(type)) { |
| sBuilder.matchIPSrc(IpPrefix.valueOf(k8sNetwork.gatewayIp(), |
| HOST_PREFIX)); |
| tBuilder.setOutput(k8sNode.localToIntgPatchPortNum()); |
| } |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| k8sNode.localBridge(), |
| sBuilder.build(), |
| tBuilder.build(), |
| PRIORITY_LOCAL_BRIDGE_RULE, |
| LOCAL_ENTRY_TABLE, |
| install); |
| } |
| |
| private void setLocalBridgeArpRules(K8sNetwork k8sNetwork, boolean install) { |
| for (K8sNode node : k8sNodeService.completeNodes()) { |
| if (node.hostname().equals(k8sNetwork.name())) { |
| setLocalBridgeArpRule(k8sNetwork, node, install); |
| } |
| } |
| } |
| |
| private void setLocalBridgeArpRule(K8sNetwork k8sNetwork, K8sNode k8sNode, boolean install) { |
| Device device = deviceService.getDevice(k8sNode.localBridge()); |
| |
| String shiftedLocalIp = shiftIpDomain( |
| k8sNetwork.gatewayIp().toString(), SHIFTED_LOCAL_IP_PREFIX); |
| |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_ARP) |
| .matchArpOp(ARP.OP_REQUEST) |
| .matchArpTpa(Ip4Address.valueOf(shiftedLocalIp)) |
| .build(); |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .setArpOp(ARP.OP_REPLY) |
| .extension(buildMoveEthSrcToDstExtension(device), device.id()) |
| .extension(buildMoveArpShaToThaExtension(device), device.id()) |
| .extension(buildMoveArpSpaToTpaExtension(device), device.id()) |
| .setArpSpa(Ip4Address.valueOf(shiftedLocalIp)) |
| .setArpSha(k8sNode.intgBridgeMac()) |
| .setOutput(PortNumber.IN_PORT) |
| .build(); |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| device.id(), |
| selector, |
| treatment, |
| PRIORITY_ARP_REPLY_RULE, |
| LOCAL_ENTRY_TABLE, |
| install); |
| } |
| |
| 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: |
| case K8S_NETWORK_UPDATED: |
| eventExecutor.execute(() -> processNetworkCreation(event)); |
| break; |
| case K8S_NETWORK_REMOVED: |
| eventExecutor.execute(() -> processNetworkRemoval(event)); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| private void processNetworkCreation(K8sNetworkEvent event) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setGatewayRule(event.subject(), true); |
| setLocalBridgeRules(event.subject(), true); |
| setLocalBridgeArpRules(event.subject(), true); |
| |
| K8sNode k8sNode = k8sNodeService.node(event.subject().networkId()); |
| setInterNodeRoutingRules(k8sNode, true); |
| } |
| |
| private void processNetworkRemoval(K8sNetworkEvent event) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setGatewayRule(event.subject(), false); |
| setLocalBridgeRules(event.subject(), false); |
| setLocalBridgeArpRules(event.subject(), false); |
| |
| K8sNode k8sNode = k8sNodeService.node(event.subject().networkId()); |
| setInterNodeRoutingRules(k8sNode, false); |
| } |
| } |
| |
| private class InternalK8sNodeListener implements K8sNodeListener { |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sNodeEvent event) { |
| switch (event.type()) { |
| case K8S_NODE_COMPLETE: |
| eventExecutor.execute(() -> processNodeCompletion(event.subject())); |
| break; |
| case K8S_NODE_INCOMPLETE: |
| default: |
| break; |
| } |
| } |
| |
| private void processNodeCompletion(K8sNode node) { |
| log.info("COMPLETE node {} is detected", node.hostname()); |
| |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| k8sNetworkService.networks().forEach(n -> setGatewayRule(n, true)); |
| k8sNetworkService.networks().forEach(n -> setLocalBridgeRules(n, true)); |
| k8sNetworkService.networks().forEach(n -> setLocalBridgeArpRules(n, true)); |
| |
| setInterNodeRoutingRules(node, true); |
| } |
| } |
| } |