Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Open Networking Laboratory |
| 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.onlab.onos.store.resource.impl; |
| 17 | |
| 18 | import org.apache.felix.scr.annotations.Activate; |
| 19 | import org.apache.felix.scr.annotations.Component; |
| 20 | import org.apache.felix.scr.annotations.Deactivate; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 21 | import org.apache.felix.scr.annotations.Reference; |
| 22 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 23 | import org.apache.felix.scr.annotations.Service; |
| 24 | import org.onlab.onos.net.Link; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 25 | import org.onlab.onos.net.LinkKey; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 26 | import org.onlab.onos.net.intent.IntentId; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 27 | import org.onlab.onos.net.link.LinkService; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 28 | import org.onlab.onos.net.resource.Bandwidth; |
| 29 | import org.onlab.onos.net.resource.BandwidthResourceAllocation; |
| 30 | import org.onlab.onos.net.resource.Lambda; |
| 31 | import org.onlab.onos.net.resource.LambdaResourceAllocation; |
| 32 | import org.onlab.onos.net.resource.LinkResourceAllocations; |
| 33 | import org.onlab.onos.net.resource.LinkResourceStore; |
| 34 | import org.onlab.onos.net.resource.ResourceAllocation; |
| 35 | import org.onlab.onos.net.resource.ResourceType; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 36 | import org.onlab.onos.store.serializers.KryoSerializer; |
| 37 | import org.onlab.onos.store.serializers.StoreSerializer; |
| 38 | import org.onlab.onos.store.service.BatchWriteRequest; |
| 39 | import org.onlab.onos.store.service.BatchWriteRequest.Builder; |
| 40 | import org.onlab.onos.store.service.BatchWriteResult; |
| 41 | import org.onlab.onos.store.service.DatabaseAdminService; |
Yuta HIGUCHI | 2fe6334 | 2014-11-17 21:33:38 -0800 | [diff] [blame] | 42 | import org.onlab.onos.store.service.DatabaseException; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 43 | import org.onlab.onos.store.service.DatabaseService; |
| 44 | import org.onlab.onos.store.service.VersionedValue; |
| 45 | import org.onlab.onos.store.service.WriteRequest; |
| 46 | import org.onlab.onos.store.service.WriteResult; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 47 | import org.slf4j.Logger; |
| 48 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 49 | import com.google.common.base.Function; |
| 50 | import com.google.common.collect.FluentIterable; |
| 51 | import com.google.common.collect.ImmutableSet; |
| 52 | import com.google.common.collect.Sets; |
| 53 | |
| 54 | import java.util.ArrayList; |
| 55 | import java.util.Collection; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 56 | import java.util.HashMap; |
| 57 | import java.util.HashSet; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 58 | import java.util.List; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 59 | import java.util.Map; |
| 60 | import java.util.Set; |
| 61 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 62 | import static com.google.common.base.Preconditions.checkArgument; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 63 | import static com.google.common.base.Preconditions.checkNotNull; |
| 64 | import static com.google.common.base.Preconditions.checkState; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 65 | import static com.google.common.base.Predicates.notNull; |
| 66 | import static org.onlab.util.HexString.toHexString; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 67 | import static org.slf4j.LoggerFactory.getLogger; |
| 68 | |
| 69 | /** |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 70 | * Manages link resources using database service. |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 71 | */ |
| 72 | @Component(immediate = true) |
| 73 | @Service |
| 74 | public class DistributedLinkResourceStore implements LinkResourceStore { |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 75 | |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 76 | private final Logger log = getLogger(getClass()); |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 77 | |
| 78 | // FIXME: what is the Bandwidth unit? |
| 79 | private static final Bandwidth DEFAULT_BANDWIDTH = Bandwidth.valueOf(1_000); |
| 80 | |
| 81 | // table to store current allocations |
| 82 | /** LinkKey -> List<LinkResourceAllocations>. */ |
| 83 | private static final String LINK_RESOURCE_ALLOCATIONS = "LinkResourceAllocations"; |
| 84 | |
| 85 | /** IntentId -> LinkResourceAllocations. */ |
| 86 | private static final String INTENT_ALLOCATIONS = "IntentAllocations"; |
| 87 | |
| 88 | private static final Bandwidth EMPTY_BW = Bandwidth.valueOf(0); |
| 89 | |
| 90 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 91 | protected DatabaseAdminService databaseAdminService; |
| 92 | |
| 93 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 94 | protected DatabaseService databaseService; |
| 95 | |
| 96 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 97 | protected LinkService linkService; |
| 98 | |
| 99 | // Link annotation key name to use as bandwidth |
| 100 | private String bandwidthAnnotation = "bandwidth"; |
| 101 | // Link annotation key name to use as max lamda |
| 102 | private String wavesAnnotation = "optical.waves"; |
| 103 | |
| 104 | private StoreSerializer serializer; |
| 105 | |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 106 | |
| 107 | @Activate |
| 108 | public void activate() { |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 109 | |
| 110 | serializer = new KryoSerializer(); |
| 111 | |
Yuta HIGUCHI | 2fe6334 | 2014-11-17 21:33:38 -0800 | [diff] [blame] | 112 | Set<String> tables = null; |
| 113 | int retries = 0; |
| 114 | do { |
| 115 | try { |
| 116 | tables = databaseAdminService.listTables(); |
| 117 | } catch (DatabaseException e) { |
| 118 | log.debug("DatabaseException", e); |
| 119 | retries++; |
| 120 | if (retries > 10) { |
| 121 | log.error("Failed to list tables, moving on", e); |
| 122 | tables = new HashSet<>(); |
| 123 | } |
| 124 | } |
| 125 | } while (tables == null); |
| 126 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 127 | if (!tables.contains(LINK_RESOURCE_ALLOCATIONS)) { |
| 128 | databaseAdminService.createTable(LINK_RESOURCE_ALLOCATIONS); |
| 129 | } |
| 130 | if (!tables.contains(INTENT_ALLOCATIONS)) { |
| 131 | databaseAdminService.createTable(INTENT_ALLOCATIONS); |
| 132 | } |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 133 | |
Yuta HIGUCHI | 2fe6334 | 2014-11-17 21:33:38 -0800 | [diff] [blame] | 134 | |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 135 | log.info("Started"); |
| 136 | } |
| 137 | |
| 138 | @Deactivate |
| 139 | public void deactivate() { |
| 140 | log.info("Stopped"); |
| 141 | } |
| 142 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 143 | private Set<? extends ResourceAllocation> getResourceCapacity(ResourceType type, Link link) { |
| 144 | // TODO: plugin/provider mechanism to add resource type in the future? |
| 145 | if (type == ResourceType.BANDWIDTH) { |
| 146 | return ImmutableSet.of(getBandwidthResourceCapacity(link)); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 147 | } |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 148 | if (type == ResourceType.LAMBDA) { |
| 149 | return getLambdaResourceCapacity(link); |
| 150 | } |
| 151 | return null; |
| 152 | } |
| 153 | |
| 154 | private Set<LambdaResourceAllocation> getLambdaResourceCapacity(Link link) { |
| 155 | // FIXME enumerate all the possible link/port lambdas |
| 156 | Set<LambdaResourceAllocation> allocations = new HashSet<>(); |
| 157 | try { |
| 158 | final int waves = Integer.parseInt(link.annotations().value(wavesAnnotation)); |
| 159 | for (int i = 1; i <= waves; i++) { |
| 160 | allocations.add(new LambdaResourceAllocation(Lambda.valueOf(i))); |
| 161 | } |
| 162 | } catch (NumberFormatException e) { |
| 163 | log.debug("No {} annotation on link %s", wavesAnnotation, link); |
| 164 | } |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 165 | return allocations; |
| 166 | } |
| 167 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 168 | private BandwidthResourceAllocation getBandwidthResourceCapacity(Link link) { |
| 169 | |
| 170 | // if Link annotation exist, use them |
| 171 | // if all fails, use DEFAULT_BANDWIDTH |
| 172 | |
| 173 | Bandwidth bandwidth = null; |
| 174 | String strBw = link.annotations().value(bandwidthAnnotation); |
| 175 | if (strBw != null) { |
| 176 | try { |
| 177 | bandwidth = Bandwidth.valueOf(Double.parseDouble(strBw)); |
| 178 | } catch (NumberFormatException e) { |
| 179 | // do nothings |
| 180 | bandwidth = null; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 181 | } |
| 182 | } |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 183 | |
| 184 | if (bandwidth == null) { |
| 185 | // fall back, use fixed default |
| 186 | bandwidth = DEFAULT_BANDWIDTH; |
| 187 | } |
| 188 | return new BandwidthResourceAllocation(bandwidth); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 189 | } |
| 190 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 191 | private Map<ResourceType, Set<? extends ResourceAllocation>> getResourceCapacity(Link link) { |
| 192 | Map<ResourceType, Set<? extends ResourceAllocation>> caps = new HashMap<>(); |
| 193 | for (ResourceType type : ResourceType.values()) { |
| 194 | Set<? extends ResourceAllocation> cap = getResourceCapacity(type, link); |
| 195 | if (cap != null) { |
| 196 | caps.put(type, cap); |
| 197 | } |
| 198 | } |
| 199 | return caps; |
| 200 | } |
| 201 | |
| 202 | @Override |
| 203 | public Set<ResourceAllocation> getFreeResources(Link link) { |
| 204 | Map<ResourceType, Set<? extends ResourceAllocation>> freeResources = getFreeResourcesEx(link); |
| 205 | Set<ResourceAllocation> allFree = new HashSet<>(); |
| 206 | for (Set<? extends ResourceAllocation> r:freeResources.values()) { |
| 207 | allFree.addAll(r); |
| 208 | } |
| 209 | return allFree; |
| 210 | } |
| 211 | |
| 212 | private Map<ResourceType, Set<? extends ResourceAllocation>> getFreeResourcesEx(Link link) { |
| 213 | // returns capacity - allocated |
| 214 | |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 215 | checkNotNull(link); |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 216 | Map<ResourceType, Set<? extends ResourceAllocation>> free = new HashMap<>(); |
| 217 | final Map<ResourceType, Set<? extends ResourceAllocation>> caps = getResourceCapacity(link); |
| 218 | final Iterable<LinkResourceAllocations> allocations = getAllocations(link); |
| 219 | |
| 220 | for (ResourceType type : ResourceType.values()) { |
| 221 | // there should be class/category of resources |
| 222 | switch (type) { |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 223 | case BANDWIDTH: |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 224 | { |
| 225 | Set<? extends ResourceAllocation> bw = caps.get(ResourceType.BANDWIDTH); |
| 226 | if (bw == null || bw.isEmpty()) { |
| 227 | bw = Sets.newHashSet(new BandwidthResourceAllocation(EMPTY_BW)); |
| 228 | } |
| 229 | |
| 230 | BandwidthResourceAllocation cap = (BandwidthResourceAllocation) bw.iterator().next(); |
| 231 | double freeBw = cap.bandwidth().toDouble(); |
| 232 | |
| 233 | // enumerate current allocations, subtracting resources |
| 234 | for (LinkResourceAllocations alloc : allocations) { |
| 235 | Set<ResourceAllocation> types = alloc.getResourceAllocation(link); |
| 236 | for (ResourceAllocation a : types) { |
| 237 | if (a instanceof BandwidthResourceAllocation) { |
| 238 | BandwidthResourceAllocation bwA = (BandwidthResourceAllocation) a; |
| 239 | freeBw -= bwA.bandwidth().toDouble(); |
| 240 | } |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | free.put(type, Sets.newHashSet(new BandwidthResourceAllocation(Bandwidth.valueOf(freeBw)))); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 245 | break; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 246 | } |
| 247 | |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 248 | case LAMBDA: |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 249 | { |
| 250 | Set<? extends ResourceAllocation> lmd = caps.get(type); |
| 251 | if (lmd == null || lmd.isEmpty()) { |
| 252 | // nothing left |
| 253 | break; |
| 254 | } |
| 255 | Set<LambdaResourceAllocation> freeL = new HashSet<>(); |
| 256 | for (ResourceAllocation r : lmd) { |
| 257 | if (r instanceof LambdaResourceAllocation) { |
| 258 | freeL.add((LambdaResourceAllocation) r); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | // enumerate current allocations, removing resources |
| 263 | for (LinkResourceAllocations alloc : allocations) { |
| 264 | Set<ResourceAllocation> types = alloc.getResourceAllocation(link); |
| 265 | for (ResourceAllocation a : types) { |
| 266 | if (a instanceof LambdaResourceAllocation) { |
| 267 | freeL.remove(a); |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | free.put(type, freeL); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 273 | break; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 274 | } |
| 275 | |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 276 | default: |
| 277 | break; |
| 278 | } |
| 279 | } |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 280 | return free; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 281 | } |
| 282 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 283 | private LinkResourceAllocations getIntentAllocations(IntentId id) { |
| 284 | VersionedValue vv |
| 285 | = databaseService.get(INTENT_ALLOCATIONS, toIntentDbKey(checkNotNull(id))); |
| 286 | if (vv == null || vv.value() == null) { |
| 287 | return null; |
| 288 | } |
| 289 | return decodeIntentAllocations(vv.value()); |
| 290 | } |
| 291 | |
| 292 | private Builder putIntentAllocations(Builder ctx, |
| 293 | IntentId id, |
| 294 | LinkResourceAllocations alloc) { |
| 295 | return ctx.put(INTENT_ALLOCATIONS, |
| 296 | toIntentDbKey(id), |
| 297 | encodeIntentAllocations(alloc)); |
| 298 | } |
| 299 | |
| 300 | |
| 301 | @Override |
| 302 | public void allocateResources(LinkResourceAllocations allocations) { |
| 303 | checkNotNull(allocations); |
| 304 | |
| 305 | Builder tx = BatchWriteRequest.newBuilder(); |
| 306 | |
| 307 | // TODO: Should IntentId -> Allocation be updated conditionally? |
| 308 | putIntentAllocations(tx, allocations.intendId(), allocations); |
| 309 | |
| 310 | for (Link link : allocations.links()) { |
| 311 | allocateLinkResource(tx, link, allocations); |
| 312 | } |
| 313 | |
| 314 | BatchWriteRequest batch = tx.build(); |
| 315 | // log.info("Intent: {}", databaseService.getAll(INTENT_ALLOCATIONS)); |
| 316 | // log.info("Link: {}", databaseService.getAll(LINK_RESOURCE_ALLOCATIONS)); |
| 317 | |
| 318 | BatchWriteResult result = databaseService.batchWrite(batch); |
| 319 | if (!result.isSuccessful()) { |
| 320 | log.error("Allocation Failed."); |
| 321 | if (log.isDebugEnabled()) { |
| 322 | logFailureDetail(batch, result); |
| 323 | } |
| 324 | // FIXME throw appropriate exception, with what failed. |
| 325 | checkState(result.isSuccessful(), "Allocation failed"); |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | private void logFailureDetail(BatchWriteRequest batch, |
| 330 | BatchWriteResult result) { |
| 331 | for (int i = 0; i < batch.batchSize(); ++i) { |
| 332 | final WriteRequest req = batch.getAsList().get(i); |
| 333 | final WriteResult fail = result.getAsList().get(i); |
| 334 | switch (fail.status()) { |
| 335 | case ABORTED: |
| 336 | log.debug("ABORTED: {}@{}", req.key(), req.tableName()); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 337 | break; |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 338 | case PRECONDITION_VIOLATION: |
| 339 | switch (req.type()) { |
| 340 | case PUT_IF_ABSENT: |
| 341 | log.debug("{}: {}@{} : {}", req.type(), |
| 342 | req.key(), req.tableName(), fail.previousValue()); |
| 343 | break; |
| 344 | case PUT_IF_VALUE: |
| 345 | case REMOVE_IF_VALUE: |
| 346 | log.debug("{}: {}@{} : was {}, expected {}", req.type(), |
| 347 | req.key(), req.tableName(), |
| 348 | fail.previousValue(), |
| 349 | toHexString(req.oldValue())); |
| 350 | break; |
| 351 | case PUT_IF_VERSION: |
| 352 | case REMOVE_IF_VERSION: |
| 353 | log.debug("{}: {}@{} : was {}, expected {}", req.type(), |
| 354 | req.key(), req.tableName(), |
| 355 | fail.previousValue().version(), |
| 356 | req.previousVersion()); |
| 357 | break; |
| 358 | default: |
| 359 | log.error("Should never reach here."); |
| 360 | break; |
| 361 | } |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 362 | break; |
| 363 | default: |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 364 | log.error("Should never reach here."); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 365 | break; |
| 366 | } |
| 367 | } |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 368 | } |
| 369 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 370 | private Builder allocateLinkResource(Builder builder, Link link, |
| 371 | LinkResourceAllocations allocations) { |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 372 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 373 | // requested resources |
| 374 | Set<ResourceAllocation> reqs = allocations.getResourceAllocation(link); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 375 | |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 376 | Map<ResourceType, Set<? extends ResourceAllocation>> available = getFreeResourcesEx(link); |
| 377 | for (ResourceAllocation req : reqs) { |
| 378 | Set<? extends ResourceAllocation> avail = available.get(req.type()); |
| 379 | if (req instanceof BandwidthResourceAllocation) { |
| 380 | // check if allocation should be accepted |
| 381 | if (avail.isEmpty()) { |
| 382 | checkState(!avail.isEmpty(), |
| 383 | "There's no Bandwidth resource on %s?", |
| 384 | link); |
| 385 | } |
| 386 | BandwidthResourceAllocation bw = (BandwidthResourceAllocation) avail.iterator().next(); |
| 387 | double bwLeft = bw.bandwidth().toDouble(); |
| 388 | bwLeft -= ((BandwidthResourceAllocation) req).bandwidth().toDouble(); |
| 389 | if (bwLeft < 0) { |
| 390 | // FIXME throw appropriate Exception |
| 391 | checkState(bwLeft >= 0, |
| 392 | "There's no Bandwidth left on %s. %s", |
| 393 | link, bwLeft); |
| 394 | } |
| 395 | } else if (req instanceof LambdaResourceAllocation) { |
| 396 | |
| 397 | // check if allocation should be accepted |
| 398 | if (!avail.contains(req)) { |
| 399 | // requested lambda was not available |
| 400 | // FIXME throw appropriate exception |
| 401 | checkState(avail.contains(req), |
| 402 | "Allocating %s on %s failed", |
| 403 | req, link); |
| 404 | } |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 405 | } |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 406 | } |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 407 | // all requests allocatable => add allocation |
| 408 | final List<LinkResourceAllocations> before = getAllocations(link); |
| 409 | List<LinkResourceAllocations> after = new ArrayList<>(before.size()); |
| 410 | after.addAll(before); |
| 411 | after.add(allocations); |
| 412 | replaceLinkAllocations(builder, LinkKey.linkKey(link), before, after); |
| 413 | return builder; |
| 414 | } |
| 415 | |
| 416 | private Builder replaceLinkAllocations(Builder builder, LinkKey linkKey, |
| 417 | List<LinkResourceAllocations> before, |
| 418 | List<LinkResourceAllocations> after) { |
| 419 | |
| 420 | byte[] oldValue = encodeLinkAllocations(before); |
| 421 | byte[] newValue = encodeLinkAllocations(after); |
| 422 | builder.putIfValueMatches(LINK_RESOURCE_ALLOCATIONS, toLinkDbKey(linkKey), oldValue, newValue); |
| 423 | return builder; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | @Override |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 427 | public void releaseResources(LinkResourceAllocations allocations) { |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 428 | checkNotNull(allocations); |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 429 | |
| 430 | final IntentId intendId = allocations.intendId(); |
| 431 | final String dbIntentId = toIntentDbKey(intendId); |
| 432 | final Collection<Link> links = allocations.links(); |
| 433 | |
| 434 | // TODO: does release must happen in a batch? |
| 435 | boolean success; |
| 436 | do { |
| 437 | Builder tx = BatchWriteRequest.newBuilder(); |
| 438 | |
| 439 | // TODO: Should IntentId -> Allocation be updated conditionally? |
| 440 | tx.remove(INTENT_ALLOCATIONS, dbIntentId); |
| 441 | |
| 442 | for (Link link : links) { |
| 443 | final LinkKey linkId = LinkKey.linkKey(link); |
| 444 | final String dbLinkId = toLinkDbKey(linkId); |
| 445 | VersionedValue vv = databaseService.get(LINK_RESOURCE_ALLOCATIONS, dbLinkId); |
| 446 | if (vv == null || vv.value() == null) { |
| 447 | // something is wrong, but it is already freed |
| 448 | log.warn("There was no resource left to release on {}", linkId); |
| 449 | continue; |
| 450 | } |
| 451 | List<LinkResourceAllocations> before = decodeLinkAllocations(vv.value()); |
| 452 | List<LinkResourceAllocations> after = new ArrayList<>(before); |
| 453 | after.remove(allocations); |
| 454 | byte[] oldValue = encodeLinkAllocations(before); |
| 455 | byte[] newValue = encodeLinkAllocations(after); |
| 456 | tx.putIfValueMatches(LINK_RESOURCE_ALLOCATIONS, dbLinkId, oldValue, newValue); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 457 | } |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 458 | |
| 459 | BatchWriteResult batchWrite = databaseService.batchWrite(tx.build()); |
| 460 | success = batchWrite.isSuccessful(); |
| 461 | } while (!success); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | @Override |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 465 | public LinkResourceAllocations getAllocations(IntentId intentId) { |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 466 | checkNotNull(intentId); |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 467 | VersionedValue vv = databaseService.get(INTENT_ALLOCATIONS, toIntentDbKey(intentId)); |
| 468 | if (vv == null) { |
| 469 | // FIXME: should we return null or LinkResourceAllocations with nothing allocated? |
| 470 | return null; |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 471 | } |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 472 | LinkResourceAllocations allocations = decodeIntentAllocations(vv.value()); |
| 473 | return allocations; |
| 474 | } |
| 475 | |
| 476 | private String toLinkDbKey(LinkKey linkid) { |
| 477 | // introduce cache if necessary |
| 478 | return linkid.toString(); |
| 479 | // TODO: Above is irreversible, if we need reverse conversion |
| 480 | // we may need something like below, due to String only limitation |
| 481 | // byte[] bytes = serializer.encode(linkid); |
| 482 | // StringBuilder builder = new StringBuilder(bytes.length * 4); |
| 483 | // boolean isFirst = true; |
| 484 | // for (byte b : bytes) { |
| 485 | // if (!isFirst) { |
| 486 | // builder.append(','); |
| 487 | // } |
| 488 | // builder.append(b); |
| 489 | // isFirst = false; |
| 490 | // } |
| 491 | // return builder.toString(); |
| 492 | } |
| 493 | |
| 494 | // private LinkKey toLinkKey(String linkKey) { |
| 495 | // String[] bytes = linkKey.split(","); |
| 496 | // ByteBuffer buf = ByteBuffer.allocate(bytes.length); |
| 497 | // for (String bs : bytes) { |
| 498 | // buf.put(Byte.parseByte(bs)); |
| 499 | // } |
| 500 | // buf.flip(); |
| 501 | // return serializer.decode(buf); |
| 502 | // } |
| 503 | |
| 504 | private String toIntentDbKey(IntentId intentid) { |
| 505 | return intentid.toString(); |
| 506 | } |
| 507 | |
| 508 | private IntentId toIntentId(String intentid) { |
| 509 | checkArgument(intentid.startsWith("0x")); |
| 510 | return IntentId.valueOf(Long.parseLong(intentid.substring(2))); |
| 511 | } |
| 512 | |
| 513 | private LinkResourceAllocations decodeIntentAllocations(byte[] bytes) { |
| 514 | return serializer.decode(bytes); |
| 515 | } |
| 516 | |
| 517 | private byte[] encodeIntentAllocations(LinkResourceAllocations alloc) { |
| 518 | return serializer.encode(checkNotNull(alloc)); |
| 519 | } |
| 520 | |
| 521 | private List<LinkResourceAllocations> decodeLinkAllocations(byte[] bytes) { |
| 522 | return serializer.decode(bytes); |
| 523 | } |
| 524 | |
| 525 | private byte[] encodeLinkAllocations(List<LinkResourceAllocations> alloc) { |
| 526 | return serializer.encode(checkNotNull(alloc)); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | @Override |
Yuta HIGUCHI | 3524229 | 2014-11-12 18:53:15 -0800 | [diff] [blame] | 530 | public List<LinkResourceAllocations> getAllocations(Link link) { |
| 531 | checkNotNull(link); |
| 532 | final LinkKey key = LinkKey.linkKey(link); |
| 533 | final String dbKey = toLinkDbKey(key); |
| 534 | VersionedValue vv = databaseService.get(LINK_RESOURCE_ALLOCATIONS, dbKey); |
| 535 | if (vv == null) { |
| 536 | // write empty so that all other update can be replace operation |
| 537 | byte[] emptyList = encodeLinkAllocations(new ArrayList<>()); |
| 538 | boolean written = databaseService.putIfAbsent(LINK_RESOURCE_ALLOCATIONS, dbKey, emptyList); |
| 539 | log.trace("Empty allocation write success? {}", written); |
| 540 | vv = databaseService.get(LINK_RESOURCE_ALLOCATIONS, dbKey); |
| 541 | if (vv == null) { |
| 542 | log.error("Failed to re-read allocation for {}", dbKey); |
| 543 | // note: cannot be Collections.emptyList(); |
| 544 | return new ArrayList<>(); |
| 545 | } |
| 546 | } |
| 547 | List<LinkResourceAllocations> allocations = decodeLinkAllocations(vv.value()); |
| 548 | return allocations; |
| 549 | } |
| 550 | |
| 551 | @Override |
| 552 | public Iterable<LinkResourceAllocations> getAllocations() { |
| 553 | //IntentId -> LinkResourceAllocations |
| 554 | Map<String, VersionedValue> all = databaseService.getAll(INTENT_ALLOCATIONS); |
| 555 | |
| 556 | return FluentIterable.from(all.values()) |
| 557 | .transform(new Function<VersionedValue, LinkResourceAllocations>() { |
| 558 | |
| 559 | @Override |
| 560 | public LinkResourceAllocations apply(VersionedValue input) { |
| 561 | if (input == null || input.value() == null) { |
| 562 | return null; |
| 563 | } |
| 564 | return decodeIntentAllocations(input.value()); |
| 565 | } |
| 566 | }) |
| 567 | .filter(notNull()); |
Brian O'Connor | 41718fc | 2014-10-30 16:57:21 -0700 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | } |