Andrea Campanella | e370878 | 2017-10-16 16:00:21 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-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 | |
| 17 | package org.onosproject.net.meter.impl; |
| 18 | |
| 19 | import com.google.common.collect.Sets; |
| 20 | import org.onosproject.mastership.MastershipService; |
| 21 | import org.onosproject.net.Device; |
| 22 | import org.onosproject.net.DeviceId; |
| 23 | import org.onosproject.net.device.DeviceEvent; |
| 24 | import org.onosproject.net.device.DeviceListener; |
| 25 | import org.onosproject.net.device.DeviceService; |
| 26 | import org.onosproject.net.meter.Meter; |
Wailok Shum | f013a78 | 2021-07-26 16:51:01 +0800 | [diff] [blame] | 27 | import org.onosproject.net.meter.MeterFeatures; |
Andrea Campanella | e370878 | 2017-10-16 16:00:21 +0200 | [diff] [blame] | 28 | import org.onosproject.net.meter.MeterOperation; |
| 29 | import org.onosproject.net.meter.MeterOperations; |
| 30 | import org.onosproject.net.meter.MeterProgrammable; |
| 31 | import org.onosproject.net.meter.MeterProvider; |
| 32 | |
| 33 | import org.onosproject.net.meter.MeterProviderService; |
| 34 | import org.onosproject.net.provider.AbstractProvider; |
| 35 | import org.onosproject.net.provider.ProviderId; |
| 36 | import org.slf4j.Logger; |
| 37 | import org.slf4j.LoggerFactory; |
| 38 | |
| 39 | import java.util.Collection; |
Wailok Shum | f013a78 | 2021-07-26 16:51:01 +0800 | [diff] [blame] | 40 | import java.util.Collections; |
Andrea Campanella | e370878 | 2017-10-16 16:00:21 +0200 | [diff] [blame] | 41 | import java.util.Set; |
| 42 | import java.util.concurrent.ExecutionException; |
| 43 | import java.util.concurrent.ScheduledExecutorService; |
| 44 | import java.util.concurrent.ScheduledFuture; |
| 45 | import java.util.concurrent.TimeUnit; |
| 46 | import java.util.concurrent.TimeoutException; |
| 47 | |
| 48 | import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
| 49 | import static org.onlab.util.Tools.groupedThreads; |
| 50 | import static org.onosproject.net.device.DeviceEvent.Type.DEVICE_ADDED; |
| 51 | import static org.onosproject.net.device.DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED; |
| 52 | |
| 53 | /** |
| 54 | * Driver-based Meter provider. |
| 55 | */ |
| 56 | public class MeterDriverProvider extends AbstractProvider implements MeterProvider { |
| 57 | |
| 58 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 59 | |
| 60 | // To be extracted for reuse as we deal with other. |
| 61 | private static final String SCHEME = "default"; |
| 62 | private static final String PROVIDER_NAME = "org.onosproject.provider.meter"; |
| 63 | |
| 64 | // potentially positive device event |
| 65 | private static final Set<DeviceEvent.Type> POSITIVE_DEVICE_EVENT = |
| 66 | Sets.immutableEnumSet(DEVICE_ADDED, |
| 67 | DEVICE_AVAILABILITY_CHANGED); |
| 68 | |
| 69 | protected DeviceService deviceService; |
| 70 | protected MastershipService mastershipService; |
| 71 | MeterProviderService meterProviderService; |
| 72 | int pollFrequency; |
| 73 | |
| 74 | private InternalDeviceListener deviceListener = new InternalDeviceListener(); |
| 75 | private ScheduledExecutorService executor |
| 76 | = newSingleThreadScheduledExecutor(groupedThreads("MeterDriverProvider", "%d", log)); |
| 77 | private ScheduledFuture<?> poller = null; |
| 78 | |
| 79 | public MeterDriverProvider() { |
| 80 | super(new ProviderId(SCHEME, PROVIDER_NAME)); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Initializes the provider with the necessary device service, meter provider service, |
| 85 | * mastership service and poll frequency. |
| 86 | * |
| 87 | * @param deviceService device service |
| 88 | * @param meterProviderService meter provider service |
| 89 | * @param mastershipService mastership service |
| 90 | * @param pollFrequency meter entry poll frequency |
| 91 | */ |
| 92 | void init(DeviceService deviceService, MeterProviderService meterProviderService, |
| 93 | MastershipService mastershipService, int pollFrequency) { |
| 94 | this.deviceService = deviceService; |
| 95 | this.meterProviderService = meterProviderService; |
| 96 | this.mastershipService = mastershipService; |
| 97 | this.pollFrequency = pollFrequency; |
| 98 | |
| 99 | deviceService.addListener(deviceListener); |
| 100 | |
| 101 | if (poller != null && !poller.isCancelled()) { |
| 102 | poller.cancel(false); |
| 103 | } |
| 104 | |
| 105 | poller = executor.scheduleAtFixedRate(this::pollMeters, pollFrequency, |
| 106 | pollFrequency, TimeUnit.SECONDS); |
| 107 | |
| 108 | } |
| 109 | |
| 110 | void terminate() { |
| 111 | deviceService.removeListener(deviceListener); |
| 112 | deviceService = null; |
| 113 | meterProviderService = null; |
| 114 | mastershipService = null; |
| 115 | poller.cancel(true); |
| 116 | executor.shutdown(); |
| 117 | } |
| 118 | |
| 119 | private void pollMeters() { |
| 120 | deviceService.getAvailableDevices().forEach(device -> { |
| 121 | if (mastershipService.isLocalMaster(device.id()) && |
| 122 | device.is(MeterProgrammable.class)) { |
| 123 | pollDeviceMeters(device.id()); |
| 124 | } |
| 125 | }); |
| 126 | } |
| 127 | |
| 128 | @Override |
| 129 | public void performMeterOperation(DeviceId deviceId, MeterOperations meterOps) { |
| 130 | meterOps.operations().forEach(meterOperation -> performMeterOperation(deviceId, meterOperation)); |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public void performMeterOperation(DeviceId deviceId, MeterOperation meterOp) { |
| 135 | MeterProgrammable programmable = getMeterProgrammable(deviceId); |
| 136 | if (programmable != null) { |
| 137 | programmable.performMeterOperation(meterOp); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | private void pollDeviceMeters(DeviceId deviceId) { |
| 142 | Collection<Meter> meters = null; |
| 143 | try { |
| 144 | meters = getMeterProgrammable(deviceId).getMeters().get(pollFrequency, TimeUnit.SECONDS); |
| 145 | } catch (InterruptedException | ExecutionException | TimeoutException e) { |
| 146 | log.warn("Unable to get the Meters from {}, error: {}", deviceId, e.getMessage()); |
| 147 | log.debug("Exception: ", e); |
| 148 | } |
| 149 | meterProviderService.pushMeterMetrics(deviceId, meters); |
| 150 | } |
| 151 | |
Wailok Shum | f013a78 | 2021-07-26 16:51:01 +0800 | [diff] [blame] | 152 | private void getMeterFeatures(DeviceId deviceId) { |
| 153 | Collection<MeterFeatures> meterFeatures = Collections.emptySet(); |
| 154 | try { |
pierventre | c0914ec | 2021-08-27 15:25:02 +0200 | [diff] [blame^] | 155 | if (isMeterProgrammable(deviceId)) { |
| 156 | meterFeatures = getMeterProgrammable(deviceId).getMeterFeatures().get(pollFrequency, TimeUnit.SECONDS); |
| 157 | } |
Wailok Shum | f013a78 | 2021-07-26 16:51:01 +0800 | [diff] [blame] | 158 | } catch (Exception e) { |
| 159 | log.warn("Unable to get the Meter Features from {}, error: {}", deviceId, e.getMessage()); |
| 160 | log.debug("Exception: ", e); |
| 161 | } |
| 162 | meterProviderService.pushMeterFeatures(deviceId, meterFeatures); |
| 163 | } |
| 164 | |
pierventre | c0914ec | 2021-08-27 15:25:02 +0200 | [diff] [blame^] | 165 | private boolean isMeterProgrammable(DeviceId deviceId) { |
| 166 | Device device = deviceService.getDevice(deviceId); |
| 167 | return device.is(MeterProgrammable.class); |
| 168 | } |
| 169 | |
Andrea Campanella | e370878 | 2017-10-16 16:00:21 +0200 | [diff] [blame] | 170 | private MeterProgrammable getMeterProgrammable(DeviceId deviceId) { |
| 171 | Device device = deviceService.getDevice(deviceId); |
| 172 | if (device.is(MeterProgrammable.class)) { |
| 173 | return device.as(MeterProgrammable.class); |
| 174 | } else { |
| 175 | log.debug("Device {} is not meter programmable", deviceId); |
| 176 | return null; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | private class InternalDeviceListener implements DeviceListener { |
| 181 | |
| 182 | @Override |
| 183 | public void event(DeviceEvent event) { |
| 184 | executor.execute(() -> handleEvent(event)); |
| 185 | } |
| 186 | |
| 187 | @Override |
| 188 | public boolean isRelevant(DeviceEvent event) { |
| 189 | Device device = event.subject(); |
| 190 | return POSITIVE_DEVICE_EVENT.contains(event.type()) && |
| 191 | device.is(MeterProgrammable.class); |
| 192 | } |
| 193 | |
| 194 | private void handleEvent(DeviceEvent event) { |
| 195 | Device device = event.subject(); |
Wailok Shum | f013a78 | 2021-07-26 16:51:01 +0800 | [diff] [blame] | 196 | |
| 197 | switch (event.type()) { |
| 198 | case DEVICE_ADDED: |
| 199 | getMeterFeatures(device.id()); |
| 200 | break; |
| 201 | case DEVICE_REMOVED: |
| 202 | case DEVICE_SUSPENDED: |
| 203 | meterProviderService.deleteMeterFeatures(device.id()); |
| 204 | break; |
| 205 | default: |
| 206 | break; |
| 207 | } |
| 208 | |
Andrea Campanella | e370878 | 2017-10-16 16:00:21 +0200 | [diff] [blame] | 209 | boolean isRelevant = mastershipService.isLocalMaster(device.id()) && |
| 210 | deviceService.isAvailable(device.id()); |
| 211 | |
| 212 | if (isRelevant) { |
| 213 | pollDeviceMeters(device.id()); |
| 214 | } |
| 215 | } |
| 216 | } |
| 217 | } |