Jian Li | 1c10cf2 | 2021-03-05 01:32:04 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2021-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.kubevirtnetworking.impl; |
| 17 | |
| 18 | import com.fasterxml.jackson.databind.JsonNode; |
| 19 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 20 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 21 | import io.fabric8.kubernetes.client.KubernetesClient; |
| 22 | import io.fabric8.kubernetes.client.Watcher; |
| 23 | import io.fabric8.kubernetes.client.WatcherException; |
| 24 | import io.fabric8.kubernetes.client.dsl.base.CustomResourceDefinitionContext; |
| 25 | import org.onosproject.cluster.ClusterService; |
| 26 | import org.onosproject.cluster.LeadershipService; |
| 27 | import org.onosproject.cluster.NodeId; |
| 28 | import org.onosproject.core.ApplicationId; |
| 29 | import org.onosproject.core.CoreService; |
| 30 | import org.onosproject.kubevirtnetworking.api.AbstractWatcher; |
| 31 | import org.onosproject.kubevirtnetworking.api.KubevirtSecurityGroup; |
| 32 | import org.onosproject.kubevirtnetworking.api.KubevirtSecurityGroupAdminService; |
| 33 | import org.onosproject.kubevirtnetworking.api.KubevirtSecurityGroupRule; |
| 34 | import org.onosproject.kubevirtnode.api.KubevirtApiConfigEvent; |
| 35 | import org.onosproject.kubevirtnode.api.KubevirtApiConfigListener; |
| 36 | import org.onosproject.kubevirtnode.api.KubevirtApiConfigService; |
| 37 | import org.onosproject.mastership.MastershipService; |
| 38 | import org.osgi.service.component.annotations.Activate; |
| 39 | import org.osgi.service.component.annotations.Component; |
| 40 | import org.osgi.service.component.annotations.Deactivate; |
| 41 | import org.osgi.service.component.annotations.Reference; |
| 42 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 43 | import org.slf4j.Logger; |
| 44 | |
| 45 | import java.io.IOException; |
| 46 | import java.util.Objects; |
| 47 | import java.util.concurrent.ExecutorService; |
| 48 | |
| 49 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 50 | import static org.onlab.util.Tools.groupedThreads; |
| 51 | import static org.onosproject.kubevirtnetworking.api.Constants.KUBEVIRT_NETWORKING_APP_ID; |
| 52 | import static org.onosproject.kubevirtnetworking.util.KubevirtNetworkingUtil.k8sClient; |
| 53 | import static org.slf4j.LoggerFactory.getLogger; |
| 54 | |
| 55 | /** |
| 56 | * Kubevirt security group watcher used for feeding kubevirt security group information. |
| 57 | */ |
| 58 | @Component(immediate = true) |
| 59 | public class KubevirtSecurityGroupWatcher extends AbstractWatcher { |
| 60 | |
| 61 | private final Logger log = getLogger(getClass()); |
| 62 | |
| 63 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 64 | protected CoreService coreService; |
| 65 | |
| 66 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 67 | protected MastershipService mastershipService; |
| 68 | |
| 69 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 70 | protected ClusterService clusterService; |
| 71 | |
| 72 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 73 | protected LeadershipService leadershipService; |
| 74 | |
| 75 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 76 | protected KubevirtSecurityGroupAdminService adminService; |
| 77 | |
| 78 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 79 | protected KubevirtApiConfigService configService; |
| 80 | |
| 81 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 82 | groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| 83 | |
| 84 | private final InternalSecurityGroupWatcher |
| 85 | sgWatcher = new InternalSecurityGroupWatcher(); |
| 86 | private final InternalSecurityGroupRuleWatcher |
| 87 | sgrWatcher = new InternalSecurityGroupRuleWatcher(); |
| 88 | private final InternalKubevirtApiConfigListener |
| 89 | configListener = new InternalKubevirtApiConfigListener(); |
| 90 | |
| 91 | CustomResourceDefinitionContext securityGroupCrdCxt = new CustomResourceDefinitionContext |
| 92 | .Builder() |
| 93 | .withGroup("kubevirt.io") |
| 94 | .withScope("Cluster") |
| 95 | .withVersion("v1") |
| 96 | .withPlural("securitygroups") |
| 97 | .build(); |
| 98 | |
| 99 | CustomResourceDefinitionContext securityGroupRuleCrdCxt = new CustomResourceDefinitionContext |
| 100 | .Builder() |
| 101 | .withGroup("kubevirt.io") |
| 102 | .withScope("Cluster") |
| 103 | .withVersion("v1") |
| 104 | .withPlural("securitygrouprules") |
| 105 | .build(); |
| 106 | |
| 107 | private ApplicationId appId; |
| 108 | private NodeId localNodeId; |
| 109 | |
| 110 | @Activate |
| 111 | protected void activate() { |
| 112 | appId = coreService.registerApplication(KUBEVIRT_NETWORKING_APP_ID); |
| 113 | localNodeId = clusterService.getLocalNode().id(); |
| 114 | leadershipService.runForLeadership(appId.name()); |
| 115 | configService.addListener(configListener); |
| 116 | |
| 117 | log.info("Started"); |
| 118 | } |
| 119 | |
| 120 | @Deactivate |
| 121 | protected void deactivate() { |
| 122 | configService.removeListener(configListener); |
| 123 | leadershipService.withdraw(appId.name()); |
| 124 | eventExecutor.shutdown(); |
| 125 | |
| 126 | log.info("Stopped"); |
| 127 | } |
| 128 | |
| 129 | private void instantiateSgWatcher() { |
| 130 | KubernetesClient client = k8sClient(configService); |
| 131 | |
| 132 | if (client != null) { |
| 133 | try { |
| 134 | client.customResource(securityGroupCrdCxt).watch(sgWatcher); |
| 135 | } catch (IOException e) { |
| 136 | e.printStackTrace(); |
| 137 | } |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | private void instantiateSgrWatcher() { |
| 142 | KubernetesClient client = k8sClient(configService); |
| 143 | |
| 144 | if (client != null) { |
| 145 | try { |
| 146 | client.customResource(securityGroupRuleCrdCxt).watch(sgrWatcher); |
| 147 | } catch (IOException e) { |
| 148 | e.printStackTrace(); |
| 149 | } |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | private KubevirtSecurityGroup parseSecurityGroup(String resource) { |
| 154 | try { |
| 155 | ObjectMapper mapper = new ObjectMapper(); |
| 156 | JsonNode json = mapper.readTree(resource); |
| 157 | ObjectNode spec = (ObjectNode) json.get("spec"); |
| 158 | return codec(KubevirtSecurityGroup.class).decode(spec, this); |
| 159 | } catch (IOException e) { |
| 160 | log.error("Failed to parse kubevirt security group object"); |
| 161 | } |
| 162 | |
| 163 | return null; |
| 164 | } |
| 165 | |
| 166 | private KubevirtSecurityGroupRule parseSecurityGroupRule(String resource) { |
| 167 | try { |
| 168 | ObjectMapper mapper = new ObjectMapper(); |
| 169 | JsonNode json = mapper.readTree(resource); |
| 170 | ObjectNode spec = (ObjectNode) json.get("spec"); |
| 171 | return codec(KubevirtSecurityGroupRule.class).decode(spec, this); |
| 172 | } catch (IOException e) { |
| 173 | log.error("Failed to parse kubevirt security group rule object"); |
| 174 | } |
| 175 | |
| 176 | return null; |
| 177 | } |
| 178 | |
| 179 | private class InternalKubevirtApiConfigListener implements KubevirtApiConfigListener { |
| 180 | |
| 181 | private boolean isRelevantHelper() { |
| 182 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| 183 | } |
| 184 | |
| 185 | @Override |
| 186 | public void event(KubevirtApiConfigEvent event) { |
| 187 | |
| 188 | switch (event.type()) { |
| 189 | case KUBEVIRT_API_CONFIG_UPDATED: |
| 190 | eventExecutor.execute(this::processConfigUpdate); |
| 191 | break; |
| 192 | case KUBEVIRT_API_CONFIG_CREATED: |
| 193 | case KUBEVIRT_API_CONFIG_REMOVED: |
| 194 | default: |
| 195 | // do nothing |
| 196 | break; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | private void processConfigUpdate() { |
| 201 | if (!isRelevantHelper()) { |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | instantiateSgWatcher(); |
| 206 | instantiateSgrWatcher(); |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | private class InternalSecurityGroupWatcher implements Watcher<String> { |
| 211 | |
| 212 | @Override |
| 213 | public void eventReceived(Action action, String resource) { |
| 214 | switch (action) { |
| 215 | case ADDED: |
| 216 | eventExecutor.execute(() -> processAddition(resource)); |
| 217 | break; |
| 218 | case MODIFIED: |
| 219 | eventExecutor.execute(() -> processModification(resource)); |
| 220 | break; |
| 221 | case DELETED: |
| 222 | eventExecutor.execute(() -> processDeletion(resource)); |
| 223 | break; |
| 224 | default: |
| 225 | // do nothing |
| 226 | break; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | @Override |
| 231 | public void onClose(WatcherException e) { |
| 232 | // due to the bugs in fabric8, the watcher might be closed, |
| 233 | // we will re-instantiate the watcher in this case |
| 234 | // FIXME: https://github.com/fabric8io/kubernetes-client/issues/2135 |
| 235 | log.warn("Security Group watcher OnClose, re-instantiate the watcher..."); |
| 236 | |
| 237 | instantiateSgWatcher(); |
| 238 | } |
| 239 | |
| 240 | private void processAddition(String resource) { |
| 241 | if (!isMaster()) { |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | KubevirtSecurityGroup sg = parseSecurityGroup(resource); |
| 246 | |
| 247 | if (sg != null) { |
| 248 | log.trace("Process Security Group {} creating event from API server.", sg.name()); |
| 249 | |
| 250 | if (adminService.securityGroup(sg.id()) == null) { |
| 251 | adminService.createSecurityGroup(sg); |
| 252 | } |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | private void processModification(String resource) { |
| 257 | if (!isMaster()) { |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | KubevirtSecurityGroup sg = parseSecurityGroup(resource); |
| 262 | |
| 263 | if (sg != null) { |
| 264 | log.trace("Process Security Group {} updating event from API server.", sg.name()); |
| 265 | |
| 266 | // since Security Group CRD does not contains any rules information, |
| 267 | // we need to manually add all rules from original to the updated one |
| 268 | KubevirtSecurityGroup orig = adminService.securityGroup(sg.id()); |
| 269 | if (orig != null) { |
| 270 | KubevirtSecurityGroup updated = sg.updateRules(orig.rules()); |
| 271 | adminService.updateSecurityGroup(updated); |
| 272 | } |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | private void processDeletion(String resource) { |
| 277 | if (!isMaster()) { |
| 278 | return; |
| 279 | } |
| 280 | |
| 281 | KubevirtSecurityGroup sg = parseSecurityGroup(resource); |
| 282 | |
| 283 | if (sg != null) { |
| 284 | log.trace("Process Security Group {} removal event from API server.", sg.name()); |
| 285 | |
| 286 | adminService.removeSecurityGroup(sg.id()); |
| 287 | } |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | private class InternalSecurityGroupRuleWatcher implements Watcher<String> { |
| 292 | |
| 293 | @Override |
| 294 | public void eventReceived(Action action, String resource) { |
| 295 | switch (action) { |
| 296 | case ADDED: |
| 297 | eventExecutor.execute(() -> processAddition(resource)); |
| 298 | break; |
| 299 | case MODIFIED: |
| 300 | eventExecutor.execute(() -> processModification(resource)); |
| 301 | break; |
| 302 | case DELETED: |
| 303 | eventExecutor.execute(() -> processDeletion(resource)); |
| 304 | break; |
| 305 | default: |
| 306 | // do nothing |
| 307 | break; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | @Override |
| 312 | public void onClose(WatcherException e) { |
| 313 | // due to the bugs in fabric8, the watcher might be closed, |
| 314 | // we will re-instantiate the watcher in this case |
| 315 | // FIXME: https://github.com/fabric8io/kubernetes-client/issues/2135 |
| 316 | log.warn("Security Group Rule watcher OnClose, re-instantiate the watcher..."); |
| 317 | |
| 318 | instantiateSgrWatcher(); |
| 319 | } |
| 320 | |
| 321 | private void processAddition(String resource) { |
| 322 | if (!isMaster()) { |
| 323 | return; |
| 324 | } |
| 325 | |
| 326 | KubevirtSecurityGroupRule sgr = parseSecurityGroupRule(resource); |
| 327 | |
| 328 | if (sgr != null) { |
| 329 | log.trace("Process Security Group Rule {} creating event from API server.", sgr.id()); |
| 330 | |
| 331 | if (adminService.securityGroupRule(sgr.id()) == null) { |
| 332 | adminService.createSecurityGroupRule(sgr); |
| 333 | } |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | private void processModification(String resource) { |
| 338 | if (!isMaster()) { |
| 339 | return; |
| 340 | } |
| 341 | |
| 342 | // we do not handle the update case, as we assume the security group rule |
| 343 | // object is immutable |
| 344 | } |
| 345 | |
| 346 | private void processDeletion(String resource) { |
| 347 | if (!isMaster()) { |
| 348 | return; |
| 349 | } |
| 350 | |
| 351 | KubevirtSecurityGroupRule sgr = parseSecurityGroupRule(resource); |
| 352 | |
| 353 | if (sgr != null) { |
| 354 | log.trace("Process Security Group Rule {} removal event from API server.", sgr.id()); |
| 355 | |
| 356 | adminService.removeSecurityGroupRule(sgr.id()); |
| 357 | } |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | private boolean isMaster() { |
| 362 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| 363 | } |
| 364 | } |