| /* |
| * 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.driver.trafficcontrol; |
| |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.behaviour.trafficcontrol.Policer; |
| import org.onosproject.net.behaviour.trafficcontrol.PolicerConfigurable; |
| import org.onosproject.net.behaviour.trafficcontrol.PolicerId; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| import org.onosproject.net.driver.DriverHandler; |
| import org.onosproject.net.meter.MeterId; |
| import org.onosproject.net.meter.MeterService; |
| import org.slf4j.Logger; |
| |
| import java.net.URI; |
| import java.util.Collection; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Implementation of policer config which allows to add, delete and get policers. |
| */ |
| public class OpenFlowPolicerConfigurable extends AbstractHandlerBehaviour implements PolicerConfigurable { |
| |
| // log |
| private final Logger log = getLogger(OpenFlowPolicerConfigurable.class); |
| // OpenFlow scheme |
| private static final String OF_SCHEME = "of"; |
| // Hex |
| private static final int HEX = 16; |
| |
| // Create a policer id from a meter id |
| private PolicerId getPolicerIdFromMeterId(MeterId meterId) { |
| // Create URI representing the meter id |
| URI uri = URI.create(OF_SCHEME + ":" + Long.toHexString(meterId.id())); |
| // Return the new policer id |
| return PolicerId.policerId(uri); |
| } |
| |
| // Create a meter id from a policer id |
| private MeterId getMeterIdFromPolicerId(PolicerId policerId) { |
| // Get scheme specific part |
| Long id = Long.parseLong(policerId.uri().getSchemeSpecificPart(), HEX); |
| // Return the meter id |
| return MeterId.meterId(id); |
| } |
| |
| @Override |
| public PolicerId allocatePolicerId() { |
| // Init step |
| DriverHandler handler = handler(); |
| // First step is to get MeterService |
| MeterService meterService = handler.get(MeterService.class); |
| // There was a problem, return none |
| if (meterService == null) { |
| log.warn("MeterService is null"); |
| return PolicerId.NONE; |
| } |
| // Let's get the device id |
| DeviceId deviceId = handler.data().deviceId(); |
| // Double check correspondence between schemas |
| if (!deviceId.uri().getScheme().equals(OF_SCHEME)) { |
| log.warn("The device {} does not seem to be managed by OpenFlow", deviceId); |
| return PolicerId.NONE; |
| } |
| // Get a new meter id |
| MeterId meterId = meterService.allocateMeterId(deviceId); |
| // There was a problem |
| if (meterId == null) { |
| log.warn("MeterService does not provide valid ids"); |
| return PolicerId.NONE; |
| } |
| // Create a policer id from the meter id |
| return getPolicerIdFromMeterId(meterId); |
| } |
| |
| @Override |
| public void freePolicerId(PolicerId id) { |
| // Init step |
| DriverHandler handler = handler(); |
| // First step is to get MeterService |
| MeterService meterService = handler.get(MeterService.class); |
| // There was a problem, return none |
| if (meterService == null) { |
| log.warn("MeterService is null"); |
| return; |
| } |
| // Let's get the device id |
| DeviceId deviceId = handler.data().deviceId(); |
| // Double check correspondence with device schema |
| if (!deviceId.uri().getScheme().equals(OF_SCHEME)) { |
| log.warn("The device {} does not seem to be managed by OpenFlow", deviceId); |
| return; |
| } |
| // Double check correspondence with pid schema |
| if (!id.uri().getScheme().equals(OF_SCHEME)) { |
| log.warn("The id {} does not seem to be OpenFlow", id); |
| return; |
| } |
| // Get the meter id |
| MeterId meterId = getMeterIdFromPolicerId(id); |
| // Free the meter id |
| meterService.freeMeterId(deviceId, meterId); |
| } |
| |
| @Override |
| public void addPolicer(Policer policer) { |
| throw new UnsupportedOperationException("addPolicer not yet implemented"); |
| } |
| |
| @Override |
| public void deletePolicer(PolicerId id) { |
| throw new UnsupportedOperationException("deletePolicer not yet implemented"); |
| } |
| |
| @Override |
| public Policer getPolicer(PolicerId policerId) { |
| throw new UnsupportedOperationException("getPolicer not yet implemented"); |
| } |
| |
| @Override |
| public Collection<Policer> getPolicers() { |
| throw new UnsupportedOperationException("getPolicers not yet implemented"); |
| } |
| |
| } |