| /* |
| * 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.openstacknetworking.cli; |
| |
| import org.apache.karaf.shell.api.action.Argument; |
| import org.apache.karaf.shell.api.action.Command; |
| import org.apache.karaf.shell.api.action.Completion; |
| import org.apache.karaf.shell.api.action.lifecycle.Service; |
| import org.onosproject.cli.AbstractShellCommand; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.flow.FlowEntry; |
| import org.onosproject.net.flow.FlowRuleService; |
| import org.onosproject.openstacknetworking.api.Constants; |
| import org.onosproject.openstacknode.api.OpenstackNodeService; |
| |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| import static java.lang.Thread.sleep; |
| import static java.util.stream.StreamSupport.stream; |
| |
| /** |
| * Purges all existing network states. |
| */ |
| @Service |
| @Command(scope = "onos", name = "openstack-purge-rules", |
| description = "Purges all flow rules installed by OpenStack networking app") |
| public class OpenstackPurgeRulesCommand extends AbstractShellCommand { |
| |
| private static final long TIMEOUT_MS = 10000; // we wait 10s |
| private static final long SLEEP_MS = 2000; // we wait 2s for init each node |
| |
| @Argument(name = "hostname", description = "Hostname", |
| required = true, multiValued = true) |
| @Completion(OpenstackComputeNodeCompleter.class) |
| private String[] hostnames = null; |
| |
| @Override |
| protected void doExecute() { |
| FlowRuleService flowRuleService = get(FlowRuleService.class); |
| CoreService coreService = get(CoreService.class); |
| OpenstackNodeService nodeService = get(OpenstackNodeService.class); |
| ApplicationId appId = coreService.getAppId(Constants.OPENSTACK_NETWORKING_APP_ID); |
| |
| if (appId == null) { |
| error("Failed to purge OpenStack networking flow rules because of null app ID"); |
| return; |
| } |
| if (hostnames == null) { |
| error("Failed to purge OpenStack networking flow rules because of null hostnames"); |
| return; |
| } |
| |
| for (String hostname : hostnames) { |
| if (nodeService.node(hostname) == null) { |
| error("Failed to purge OpenStack networking flow rules for %s because of null openstack node", |
| hostname); |
| continue; |
| } |
| |
| DeviceId deviceId = nodeService.node(hostname).intgBridge(); |
| if (deviceId == null) { |
| error("Failed to purge OpenStack networking flow rules because of null device ID"); |
| return; |
| } |
| |
| removeFlowRulesByDeviceId(appId, flowRuleService, deviceId); |
| print("Successfully purged flow rules installed by" + |
| " OpenStack networking app on host %s.", hostname); |
| |
| boolean result = true; |
| long timeoutExpiredMs = System.currentTimeMillis() + TIMEOUT_MS; |
| |
| // we make sure all flow rules are removed from the store |
| while (getFlowEntriesByDeviceId(appId, flowRuleService, deviceId).isEmpty()) { |
| |
| long waitMs = timeoutExpiredMs - System.currentTimeMillis(); |
| |
| try { |
| sleep(SLEEP_MS); |
| } catch (InterruptedException e) { |
| log.error("Exception caused during rule purging..."); |
| } |
| |
| if (getFlowEntriesByDeviceId(appId, flowRuleService, deviceId).isEmpty()) { |
| break; |
| } else { |
| removeFlowRulesByDeviceId(appId, flowRuleService, deviceId); |
| print("Failed to purging flow rules, retrying rule purging..."); |
| } |
| |
| if (waitMs <= 0) { |
| result = false; |
| break; |
| } |
| } |
| if (result) { |
| print("Successfully purged flow rules for %s!", hostname); |
| } else { |
| error("Failed to purge flow rules for %s.", hostname); |
| } |
| } |
| } |
| |
| private void removeFlowRulesByDeviceId(ApplicationId appId, |
| FlowRuleService flowRuleService, |
| DeviceId deviceId) { |
| stream(flowRuleService.getFlowEntriesById(appId).spliterator(), false) |
| .filter(flowEntry -> flowEntry.deviceId().equals(deviceId)) |
| .forEach(flowRuleService::removeFlowRules); |
| } |
| |
| private Set<FlowEntry> getFlowEntriesByDeviceId(ApplicationId appId, |
| FlowRuleService flowRuleService, |
| DeviceId deviceId) { |
| return stream(flowRuleService.getFlowEntriesById(appId).spliterator(), false) |
| .filter(flowEntry -> flowEntry.deviceId().equals(deviceId)) |
| .collect(Collectors.toSet()); |
| } |
| } |