Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019-present Open Networking Foundation |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.k8snetworking.impl; |
| 17 | |
| 18 | import org.onlab.packet.Ethernet; |
| 19 | import org.onlab.packet.IpPrefix; |
| 20 | import org.onosproject.cluster.ClusterService; |
| 21 | import org.onosproject.cluster.LeadershipService; |
| 22 | import org.onosproject.cluster.NodeId; |
| 23 | import org.onosproject.core.ApplicationId; |
| 24 | import org.onosproject.core.CoreService; |
| 25 | import org.onosproject.k8snetworking.api.K8sFlowRuleService; |
| 26 | import org.onosproject.k8snetworking.api.K8sNetwork; |
| 27 | import org.onosproject.k8snetworking.api.K8sNetworkEvent; |
| 28 | import org.onosproject.k8snetworking.api.K8sNetworkListener; |
| 29 | import org.onosproject.k8snetworking.api.K8sNetworkService; |
| 30 | import org.onosproject.k8snode.api.K8sNode; |
| 31 | import org.onosproject.k8snode.api.K8sNodeEvent; |
| 32 | import org.onosproject.k8snode.api.K8sNodeListener; |
| 33 | import org.onosproject.k8snode.api.K8sNodeService; |
| 34 | import org.onosproject.net.PortNumber; |
| 35 | import org.onosproject.net.device.DeviceService; |
| 36 | import org.onosproject.net.driver.DriverService; |
| 37 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 38 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 39 | import org.onosproject.net.flow.TrafficSelector; |
| 40 | import org.onosproject.net.flow.TrafficTreatment; |
| 41 | import org.onosproject.net.packet.PacketService; |
| 42 | import org.osgi.service.component.annotations.Activate; |
| 43 | import org.osgi.service.component.annotations.Component; |
| 44 | import org.osgi.service.component.annotations.Deactivate; |
| 45 | import org.osgi.service.component.annotations.Reference; |
| 46 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 47 | import org.slf4j.Logger; |
| 48 | |
| 49 | import java.util.Objects; |
| 50 | import java.util.concurrent.ExecutorService; |
| 51 | |
| 52 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 53 | import static org.onlab.util.Tools.groupedThreads; |
| 54 | import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID; |
| 55 | import static org.onosproject.k8snetworking.api.Constants.PRIORITY_GATEWAY_RULE; |
| 56 | import static org.onosproject.k8snetworking.api.Constants.ROUTING_TABLE; |
| 57 | import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.tunnelPortNumByNetId; |
| 58 | import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildExtension; |
| 59 | import static org.slf4j.LoggerFactory.getLogger; |
| 60 | |
| 61 | /** |
| 62 | * Populates switching flow rules on OVS for providing the connectivity between |
| 63 | * container and network gateway. |
| 64 | */ |
| 65 | @Component(immediate = true) |
| 66 | public class K8sSwitchingGatewayHandler { |
| 67 | |
| 68 | private final Logger log = getLogger(getClass()); |
| 69 | |
| 70 | private static final int GW_IP_PREFIX = 32; |
| 71 | |
| 72 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 73 | protected CoreService coreService; |
| 74 | |
| 75 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 76 | protected ClusterService clusterService; |
| 77 | |
| 78 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 79 | protected LeadershipService leadershipService; |
| 80 | |
| 81 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 82 | protected DeviceService deviceService; |
| 83 | |
| 84 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 85 | protected DriverService driverService; |
| 86 | |
| 87 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 88 | protected PacketService packetService; |
| 89 | |
| 90 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 91 | protected K8sFlowRuleService k8sFlowRuleService; |
| 92 | |
| 93 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 94 | protected K8sNetworkService k8sNetworkService; |
| 95 | |
| 96 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 97 | protected K8sNodeService k8sNodeService; |
| 98 | |
| 99 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 100 | groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| 101 | private final InternalK8sNetworkListener k8sNetworkListener = |
| 102 | new InternalK8sNetworkListener(); |
| 103 | private final InternalK8sNodeListener k8sNodeListener = |
| 104 | new InternalK8sNodeListener(); |
| 105 | |
| 106 | private ApplicationId appId; |
| 107 | private NodeId localNodeId; |
| 108 | |
| 109 | @Activate |
| 110 | protected void activate() { |
| 111 | appId = coreService.registerApplication(K8S_NETWORKING_APP_ID); |
| 112 | k8sNetworkService.addListener(k8sNetworkListener); |
| 113 | k8sNodeService.addListener(k8sNodeListener); |
| 114 | localNodeId = clusterService.getLocalNode().id(); |
| 115 | leadershipService.runForLeadership(appId.name()); |
| 116 | |
| 117 | log.info("Started"); |
| 118 | } |
| 119 | |
| 120 | @Deactivate |
| 121 | protected void deactivate() { |
| 122 | k8sNodeService.removeListener(k8sNodeListener); |
| 123 | k8sNetworkService.removeListener(k8sNetworkListener); |
| 124 | leadershipService.withdraw(appId.name()); |
| 125 | eventExecutor.shutdown(); |
| 126 | |
| 127 | log.info("Stopped"); |
| 128 | } |
| 129 | |
| 130 | private void setGatewayRule(K8sNetwork k8sNetwork, boolean install) { |
| 131 | TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| 132 | .matchEthType(Ethernet.TYPE_IPV4) |
| 133 | .matchIPDst(IpPrefix.valueOf(k8sNetwork.gatewayIp(), GW_IP_PREFIX)); |
| 134 | |
| 135 | for (K8sNode node : k8sNodeService.completeNodes()) { |
| 136 | TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| 137 | |
| 138 | if (node.hostname().equals(k8sNetwork.name())) { |
Jian Li | eb488ea | 2019-04-16 01:50:02 +0900 | [diff] [blame] | 139 | tBuilder.setEthDst(node.intgBridgeMac()) |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 140 | .setOutput(PortNumber.LOCAL); |
| 141 | } else { |
| 142 | PortNumber portNum = tunnelPortNumByNetId(k8sNetwork.networkId(), |
| 143 | k8sNetworkService, node); |
| 144 | K8sNode localNode = k8sNodeService.node(k8sNetwork.name()); |
| 145 | |
| 146 | tBuilder.extension(buildExtension( |
| 147 | deviceService, |
| 148 | node.intgBridge(), |
| 149 | localNode.dataIp().getIp4Address()), |
| 150 | node.intgBridge()) |
| 151 | .setOutput(portNum); |
| 152 | } |
| 153 | |
| 154 | k8sFlowRuleService.setRule( |
| 155 | appId, |
| 156 | node.intgBridge(), |
| 157 | sBuilder.build(), |
| 158 | tBuilder.build(), |
| 159 | PRIORITY_GATEWAY_RULE, |
| 160 | ROUTING_TABLE, |
| 161 | install); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | private class InternalK8sNetworkListener implements K8sNetworkListener { |
| 166 | |
| 167 | private boolean isRelevantHelper() { |
| 168 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| 169 | } |
| 170 | |
| 171 | @Override |
| 172 | public void event(K8sNetworkEvent event) { |
| 173 | switch (event.type()) { |
| 174 | case K8S_NETWORK_CREATED: |
| 175 | case K8S_NETWORK_UPDATED: |
| 176 | eventExecutor.execute(() -> processNetworkCreation(event)); |
| 177 | break; |
| 178 | case K8S_NETWORK_REMOVED: |
| 179 | eventExecutor.execute(() -> processNetworkRemoval(event)); |
| 180 | break; |
| 181 | default: |
| 182 | break; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | private void processNetworkCreation(K8sNetworkEvent event) { |
| 187 | if (!isRelevantHelper()) { |
| 188 | return; |
| 189 | } |
| 190 | |
| 191 | setGatewayRule(event.subject(), true); |
| 192 | } |
| 193 | |
| 194 | private void processNetworkRemoval(K8sNetworkEvent event) { |
| 195 | if (!isRelevantHelper()) { |
| 196 | return; |
| 197 | } |
| 198 | |
| 199 | setGatewayRule(event.subject(), false); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | private class InternalK8sNodeListener implements K8sNodeListener { |
| 204 | private boolean isRelevantHelper() { |
| 205 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| 206 | } |
| 207 | |
| 208 | @Override |
| 209 | public void event(K8sNodeEvent event) { |
| 210 | switch (event.type()) { |
| 211 | case K8S_NODE_COMPLETE: |
| 212 | eventExecutor.execute(() -> processNodeCompletion(event.subject())); |
| 213 | break; |
| 214 | case K8S_NODE_INCOMPLETE: |
| 215 | default: |
| 216 | break; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | private void processNodeCompletion(K8sNode node) { |
| 221 | log.info("COMPLETE node {} is detected", node.hostname()); |
| 222 | |
| 223 | if (!isRelevantHelper()) { |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | k8sNetworkService.networks().forEach(n -> setGatewayRule(n, true)); |
| 228 | } |
| 229 | } |
| 230 | } |