Yoonseon Han | 9e04379 | 2017-05-03 15:43:33 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Foundation |
Yoonseon Han | 9e04379 | 2017-05-03 15:43:33 -0700 | [diff] [blame] | 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.incubator.store.virtual.impl; |
| 18 | |
| 19 | import com.google.common.collect.ComparisonChain; |
| 20 | import com.google.common.collect.Lists; |
| 21 | import com.google.common.collect.Maps; |
| 22 | import org.apache.felix.scr.annotations.Activate; |
| 23 | import org.apache.felix.scr.annotations.Component; |
| 24 | import org.apache.felix.scr.annotations.Deactivate; |
| 25 | import org.apache.felix.scr.annotations.Service; |
| 26 | import org.onosproject.incubator.net.virtual.NetworkId; |
| 27 | import org.onosproject.incubator.net.virtual.VirtualNetworkIntentStore; |
| 28 | import org.onosproject.net.intent.Intent; |
| 29 | import org.onosproject.net.intent.IntentData; |
| 30 | import org.onosproject.net.intent.IntentEvent; |
| 31 | import org.onosproject.net.intent.IntentState; |
| 32 | import org.onosproject.net.intent.IntentStoreDelegate; |
| 33 | import org.onosproject.net.intent.Key; |
| 34 | import org.onosproject.store.Timestamp; |
| 35 | import org.slf4j.Logger; |
| 36 | |
| 37 | import java.util.List; |
| 38 | import java.util.Map; |
| 39 | import java.util.stream.Collectors; |
| 40 | |
| 41 | import static com.google.common.base.Preconditions.checkArgument; |
| 42 | import static com.google.common.base.Preconditions.checkNotNull; |
| 43 | import static org.onosproject.net.intent.IntentState.PURGE_REQ; |
| 44 | import static org.slf4j.LoggerFactory.getLogger; |
| 45 | |
| 46 | /** |
| 47 | * Simple single-instance implementation of the intent store for virtual networks. |
| 48 | */ |
| 49 | |
| 50 | @Component(immediate = true) |
| 51 | @Service |
| 52 | public class SimpleVirtualIntentStore |
| 53 | extends AbstractVirtualStore<IntentEvent, IntentStoreDelegate> |
| 54 | implements VirtualNetworkIntentStore { |
| 55 | |
| 56 | private final Logger log = getLogger(getClass()); |
| 57 | |
| 58 | private final Map<NetworkId, Map<Key, IntentData>> currentByNetwork = |
| 59 | Maps.newConcurrentMap(); |
| 60 | private final Map<NetworkId, Map<Key, IntentData>> pendingByNetwork = |
| 61 | Maps.newConcurrentMap(); |
| 62 | |
| 63 | @Activate |
| 64 | public void activate() { |
| 65 | log.info("Started"); |
| 66 | } |
| 67 | |
| 68 | @Deactivate |
| 69 | public void deactivate() { |
| 70 | log.info("Stopped"); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | @Override |
| 75 | public long getIntentCount(NetworkId networkId) { |
| 76 | return getCurrentMap(networkId).size(); |
| 77 | } |
| 78 | |
| 79 | @Override |
| 80 | public Iterable<Intent> getIntents(NetworkId networkId) { |
| 81 | return getCurrentMap(networkId).values().stream() |
| 82 | .map(IntentData::intent) |
| 83 | .collect(Collectors.toList()); |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public Iterable<IntentData> getIntentData(NetworkId networkId, |
| 88 | boolean localOnly, long olderThan) { |
| 89 | if (localOnly || olderThan > 0) { |
| 90 | long older = System.nanoTime() - olderThan * 1_000_000; //convert ms to ns |
| 91 | final SystemClockTimestamp time = new SystemClockTimestamp(older); |
| 92 | return getCurrentMap(networkId).values().stream() |
| 93 | .filter(data -> data.version().isOlderThan(time) && |
| 94 | (!localOnly || isMaster(networkId, data.key()))) |
| 95 | .collect(Collectors.toList()); |
| 96 | } |
| 97 | return Lists.newArrayList(getCurrentMap(networkId).values()); |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public IntentState getIntentState(NetworkId networkId, Key intentKey) { |
| 102 | IntentData data = getCurrentMap(networkId).get(intentKey); |
| 103 | return (data != null) ? data.state() : null; |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public List<Intent> getInstallableIntents(NetworkId networkId, Key intentKey) { |
| 108 | IntentData data = getCurrentMap(networkId).get(intentKey); |
| 109 | if (data != null) { |
| 110 | return data.installables(); |
| 111 | } |
| 112 | return null; |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | public void write(NetworkId networkId, IntentData newData) { |
| 117 | checkNotNull(newData); |
| 118 | |
| 119 | synchronized (this) { |
| 120 | // TODO this could be refactored/cleaned up |
| 121 | IntentData currentData = getCurrentMap(networkId).get(newData.key()); |
| 122 | IntentData pendingData = getPendingMap(networkId).get(newData.key()); |
| 123 | |
| 124 | if (IntentData.isUpdateAcceptable(currentData, newData)) { |
| 125 | if (pendingData != null) { |
| 126 | if (pendingData.state() == PURGE_REQ) { |
| 127 | getCurrentMap(networkId).remove(newData.key(), newData); |
| 128 | } else { |
Yuta HIGUCHI | 4f8a377 | 2017-05-16 20:23:49 -0700 | [diff] [blame] | 129 | getCurrentMap(networkId).put(newData.key(), IntentData.copy(newData)); |
Yoonseon Han | 9e04379 | 2017-05-03 15:43:33 -0700 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | if (pendingData.version().compareTo(newData.version()) <= 0) { |
| 133 | // pendingData version is less than or equal to newData's |
| 134 | // Note: a new update for this key could be pending (it's version will be greater) |
| 135 | getPendingMap(networkId).remove(newData.key()); |
| 136 | } |
| 137 | } |
| 138 | IntentEvent.getEvent(newData).ifPresent(e -> notifyDelegate(networkId, e)); |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | @Override |
| 144 | public void batchWrite(NetworkId networkId, Iterable<IntentData> updates) { |
| 145 | for (IntentData data : updates) { |
| 146 | write(networkId, data); |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public Intent getIntent(NetworkId networkId, Key key) { |
| 152 | IntentData data = getCurrentMap(networkId).get(key); |
| 153 | return (data != null) ? data.intent() : null; |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | public IntentData getIntentData(NetworkId networkId, Key key) { |
| 158 | IntentData currentData = getCurrentMap(networkId).get(key); |
| 159 | if (currentData == null) { |
| 160 | return null; |
| 161 | } |
Yuta HIGUCHI | 4f8a377 | 2017-05-16 20:23:49 -0700 | [diff] [blame] | 162 | return IntentData.copy(currentData); |
Yoonseon Han | 9e04379 | 2017-05-03 15:43:33 -0700 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | @Override |
| 166 | public void addPending(NetworkId networkId, IntentData data) { |
| 167 | if (data.version() == null) { // recompiled intents will already have a version |
| 168 | data = new IntentData(data.intent(), data.state(), new SystemClockTimestamp()); |
| 169 | } |
| 170 | synchronized (this) { |
| 171 | IntentData existingData = getPendingMap(networkId).get(data.key()); |
| 172 | if (existingData == null || |
| 173 | // existing version is strictly less than data's version |
| 174 | // Note: if they are equal, we already have the update |
| 175 | // TODO maybe we should still make this <= to be safe? |
| 176 | existingData.version().compareTo(data.version()) < 0) { |
| 177 | getPendingMap(networkId).put(data.key(), data); |
| 178 | |
| 179 | checkNotNull(delegateMap.get(networkId), "Store delegate is not set") |
Yuta HIGUCHI | 4f8a377 | 2017-05-16 20:23:49 -0700 | [diff] [blame] | 180 | .process(IntentData.copy(data)); |
Yoonseon Han | 9e04379 | 2017-05-03 15:43:33 -0700 | [diff] [blame] | 181 | IntentEvent.getEvent(data).ifPresent(e -> notifyDelegate(networkId, e)); |
| 182 | } else { |
| 183 | log.debug("IntentData {} is older than existing: {}", |
| 184 | data, existingData); |
| 185 | } |
| 186 | //TODO consider also checking the current map at this point |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | @Override |
| 191 | public boolean isMaster(NetworkId networkId, Key intentKey) { |
| 192 | return true; |
| 193 | } |
| 194 | |
| 195 | @Override |
| 196 | public Iterable<Intent> getPending(NetworkId networkId) { |
| 197 | return getPendingMap(networkId).values().stream() |
| 198 | .map(IntentData::intent) |
| 199 | .collect(Collectors.toList()); |
| 200 | } |
| 201 | |
| 202 | @Override |
| 203 | public Iterable<IntentData> getPendingData(NetworkId networkId) { |
| 204 | return Lists.newArrayList(getPendingMap(networkId).values()); |
| 205 | } |
| 206 | |
| 207 | @Override |
| 208 | public IntentData getPendingData(NetworkId networkId, Key intentKey) { |
| 209 | return getPendingMap(networkId).get(intentKey); |
| 210 | } |
| 211 | |
| 212 | @Override |
| 213 | public Iterable<IntentData> getPendingData(NetworkId networkId, |
| 214 | boolean localOnly, long olderThan) { |
| 215 | long older = System.nanoTime() - olderThan * 1_000_000; //convert ms to ns |
| 216 | final SystemClockTimestamp time = new SystemClockTimestamp(older); |
| 217 | return getPendingMap(networkId).values().stream() |
| 218 | .filter(data -> data.version().isOlderThan(time) && |
| 219 | (!localOnly || isMaster(networkId, data.key()))) |
| 220 | .collect(Collectors.toList()); |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * Returns the current intent map for a specific virtual network. |
| 225 | * |
| 226 | * @param networkId a virtual network identifier |
| 227 | * @return the current map for the requested virtual network |
| 228 | */ |
| 229 | private Map<Key, IntentData> getCurrentMap(NetworkId networkId) { |
| 230 | currentByNetwork.computeIfAbsent(networkId, |
| 231 | n -> Maps.newConcurrentMap()); |
| 232 | return currentByNetwork.get(networkId); |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Returns the pending intent map for a specific virtual network. |
| 237 | * |
| 238 | * @param networkId a virtual network identifier |
| 239 | * @return the pending intent map for the requested virtual network |
| 240 | */ |
| 241 | private Map<Key, IntentData> getPendingMap(NetworkId networkId) { |
| 242 | pendingByNetwork.computeIfAbsent(networkId, |
| 243 | n -> Maps.newConcurrentMap()); |
| 244 | return pendingByNetwork.get(networkId); |
| 245 | } |
| 246 | |
| 247 | public class SystemClockTimestamp implements Timestamp { |
| 248 | |
| 249 | private final long nanoTimestamp; |
| 250 | |
| 251 | public SystemClockTimestamp() { |
| 252 | nanoTimestamp = System.nanoTime(); |
| 253 | } |
| 254 | |
| 255 | public SystemClockTimestamp(long timestamp) { |
| 256 | nanoTimestamp = timestamp; |
| 257 | } |
| 258 | |
| 259 | @Override |
| 260 | public int compareTo(Timestamp o) { |
| 261 | checkArgument(o instanceof SystemClockTimestamp, |
| 262 | "Must be SystemClockTimestamp", o); |
| 263 | SystemClockTimestamp that = (SystemClockTimestamp) o; |
| 264 | |
| 265 | return ComparisonChain.start() |
| 266 | .compare(this.nanoTimestamp, that.nanoTimestamp) |
| 267 | .result(); |
| 268 | } |
| 269 | } |
| 270 | } |