| 1 | package de.uka.ipd.sdq.pcmsolver.transformations.pcm2lqn; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.HashMap; |
| 5 | import java.util.List; |
| 6 | import java.util.Map; |
| 7 | |
| 8 | import org.apache.log4j.Logger; |
| 9 | import org.eclipse.emf.common.util.EList; |
| 10 | |
| 11 | import LqnCore.ActivityDefType; |
| 12 | import LqnCore.ActivityMakingCallType; |
| 13 | import LqnCore.ActivityPhasesType; |
| 14 | import LqnCore.CallOrderType; |
| 15 | import LqnCore.EntryType; |
| 16 | import LqnCore.PhaseActivities; |
| 17 | import LqnCore.PrecedenceType; |
| 18 | import LqnCore.ProcessorType; |
| 19 | import LqnCore.TaskType; |
| 20 | import LqnCore.TypeType; |
| 21 | import de.uka.ipd.sdq.pcm.allocation.AllocationContext; |
| 22 | import de.uka.ipd.sdq.pcm.resourceenvironment.CommunicationLinkResourceSpecification; |
| 23 | import de.uka.ipd.sdq.pcm.resourceenvironment.ProcessingResourceSpecification; |
| 24 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceContainer; |
| 25 | import de.uka.ipd.sdq.pcm.resourcetype.ProcessingResourceType; |
| 26 | import de.uka.ipd.sdq.pcm.seff.AbstractAction; |
| 27 | import de.uka.ipd.sdq.pcm.seff.AbstractBranchTransition; |
| 28 | import de.uka.ipd.sdq.pcm.seff.AbstractLoopAction; |
| 29 | import de.uka.ipd.sdq.pcm.seff.AcquireAction; |
| 30 | import de.uka.ipd.sdq.pcm.seff.BranchAction; |
| 31 | import de.uka.ipd.sdq.pcm.seff.CollectionIteratorAction; |
| 32 | import de.uka.ipd.sdq.pcm.seff.ExternalCallAction; |
| 33 | import de.uka.ipd.sdq.pcm.seff.ForkAction; |
| 34 | import de.uka.ipd.sdq.pcm.seff.ForkedBehaviour; |
| 35 | import de.uka.ipd.sdq.pcm.seff.InternalAction; |
| 36 | import de.uka.ipd.sdq.pcm.seff.LoopAction; |
| 37 | import de.uka.ipd.sdq.pcm.seff.ReleaseAction; |
| 38 | import de.uka.ipd.sdq.pcm.seff.ResourceDemandingBehaviour; |
| 39 | import de.uka.ipd.sdq.pcm.seff.ResourceDemandingSEFF; |
| 40 | import de.uka.ipd.sdq.pcm.seff.SetVariableAction; |
| 41 | import de.uka.ipd.sdq.pcm.seff.StartAction; |
| 42 | import de.uka.ipd.sdq.pcm.seff.StopAction; |
| 43 | import de.uka.ipd.sdq.pcm.seff.SynchronisationPoint; |
| 44 | import de.uka.ipd.sdq.pcm.seff.seff_performance.ParametricResourceDemand; |
| 45 | import de.uka.ipd.sdq.pcm.seff.util.SeffSwitch; |
| 46 | import de.uka.ipd.sdq.pcmsolver.transformations.ContextWrapper; |
| 47 | import de.uka.ipd.sdq.pcmsolver.transformations.EMFHelper; |
| 48 | import de.uka.ipd.sdq.pcmsolver.visitors.EMFQueryHelper; |
| 49 | import de.uka.ipd.sdq.pcmsolver.visitors.ExpressionHelper; |
| 50 | import de.uka.ipd.sdq.probfunction.math.IContinousPDF; |
| 51 | import de.uka.ipd.sdq.probfunction.math.IProbabilityDensityFunction; |
| 52 | import de.uka.ipd.sdq.probfunction.math.ManagedPDF; |
| 53 | import de.uka.ipd.sdq.probfunction.math.ManagedPMF; |
| 54 | import de.uka.ipd.sdq.probfunction.math.exception.DomainNotNumbersException; |
| 55 | import de.uka.ipd.sdq.probfunction.math.exception.FunctionNotInTimeDomainException; |
| 56 | |
| 57 | /** |
| 58 | * Visits one SEFF. An {@link Rdseff2Lqn} instance creates a new |
| 59 | * {@link Rdseff2Lqn} instance when visiting an external call, this new one |
| 60 | * is responsible for the other SEFF. |
| 61 | * |
| 62 | * Thus, only information local to this SEFF could be stored as member variables here. |
| 63 | * |
| 64 | * Each visitor method (case*) returns the id of the first generated LQN model element, |
| 65 | * so that it can be used by the handler of the previous model element |
| 66 | * to connect itself to this successor. |
| 67 | * |
| 68 | * @author koziolek, martens |
| 69 | * |
| 70 | */ |
| 71 | public class Rdseff2Lqn extends SeffSwitch<String> { |
| 72 | |
| 73 | private static Logger logger = Logger.getLogger(Rdseff2Lqn.class.getName()); |
| 74 | |
| 75 | private ContextWrapper myContextWrapper; |
| 76 | private LqnBuilder lqnBuilder; |
| 77 | |
| 78 | public Rdseff2Lqn(LqnBuilder aLqnBuilder, ContextWrapper aContextWrapper) { |
| 79 | lqnBuilder = aLqnBuilder; |
| 80 | myContextWrapper = aContextWrapper; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Does nothing yet, is ignored and the visitor continues with the successor. |
| 85 | * Can be implemented with a Semaphore task in LQN. |
| 86 | * |
| 87 | * Excerpt from LQN 4.3 documentation: |
| 88 | * |
| 89 | * Semaphore Task: Semaphore tasks are used to model passive resources such as buffers. They always have two entries |
| 90 | * which are used to signal and wait the semaphore. The wait entry must be called using a synchronous request |
| 91 | * whereas the signal entry can be called using any type of request. Once a request is accepted by the wait entry, |
| 92 | * no further requests will be accepted until a request is processed by the signal entry. The signal and wait entries |
| 93 | * do not have to called from a common task. However, the two entries must share a common call graph, and the |
| 94 | * call graph must be deterministic. The entries themselves can be defined using phases or activies and can make |
| 95 | * requests to other tasks. Counting semaphores can be modeled using a multiserver. |
| 96 | * |
| 97 | */ |
| 98 | @Override |
| 99 | public String caseAcquireAction(AcquireAction object) { |
| 100 | |
| 101 | String successorId; |
| 102 | if (lqnBuilder.isLQSimAnalysis()) { |
| 103 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 104 | String passiveResourceId = Pcm2LqnHelper.getIdForPassiveResource(object.getPassiveresource_AcquireAction(), myContextWrapper.getAllCtx()); |
| 105 | |
| 106 | ProcessorType pt = lqnBuilder.addProcessor(passiveResourceId); |
| 107 | |
| 108 | lqnBuilder.addSemaphoreTask(passiveResourceId, pt, Integer.valueOf(object |
| 109 | .getPassiveresource_AcquireAction() |
| 110 | .getCapacity_PassiveResource().getSpecification())); |
| 111 | |
| 112 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 113 | adt.setCallOrder(CallOrderType.DETERMINISTIC); |
| 114 | |
| 115 | lqnBuilder.addActivityMakingCall(id, Pcm2LqnHelper.getWaitEntryId(passiveResourceId), CallType.SYNCH); |
| 116 | successorId = (String) doSwitch(object |
| 117 | .getSuccessor_AbstractAction()); |
| 118 | lqnBuilder.addSequencePrecedence(id, successorId); |
| 119 | return id; |
| 120 | } else { |
| 121 | if (object.getPassiveresource_AcquireAction().getEntityName().toLowerCase().contains("pool")){ |
| 122 | logger.warn("Passive resource pool found. Support by PCM2LQN is limited. Please analyze the results carefully."); |
| 123 | Integer poolCapacity = Integer.valueOf(object.getPassiveresource_AcquireAction().getCapacity_PassiveResource().getSpecification()); |
| 124 | lqnBuilder.setPoolCapacity(poolCapacity); |
| 125 | } else { |
| 126 | logger.warn("Ignored release action because it is not supported by LQNS. Be aware that the passive resource is not analysed."); |
| 127 | } |
| 128 | successorId = (String) doSwitch(object |
| 129 | .getSuccessor_AbstractAction()); |
| 130 | return successorId; |
| 131 | } |
| 132 | |
| 133 | |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Does nothing yet, is ignored and the visitor continues with the successor. |
| 138 | */ |
| 139 | @Override |
| 140 | public String caseReleaseAction(ReleaseAction object) { |
| 141 | |
| 142 | String successorId; |
| 143 | if (lqnBuilder.isLQSimAnalysis()) { |
| 144 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 145 | |
| 146 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 147 | adt.setCallOrder(CallOrderType.DETERMINISTIC); |
| 148 | |
| 149 | String passiveResourceId = Pcm2LqnHelper.getIdForPassiveResource(object.getPassiveResource_ReleaseAction(), myContextWrapper.getAllCtx()); |
| 150 | |
| 151 | lqnBuilder.addActivityMakingCall(id, Pcm2LqnHelper.getSignalEntryId(passiveResourceId), CallType.SYNCH); |
| 152 | successorId = (String) doSwitch(object.getSuccessor_AbstractAction()); |
| 153 | lqnBuilder.addSequencePrecedence(id, successorId); |
| 154 | return id; |
| 155 | |
| 156 | } else { |
| 157 | logger.warn("Ignored release action because it is not supported by LQNS. Be aware that the passive resource is not analysed."); |
| 158 | successorId = (String) doSwitch(object |
| 159 | .getSuccessor_AbstractAction()); |
| 160 | return successorId; |
| 161 | } |
| 162 | |
| 163 | } |
| 164 | |
| 165 | @Override |
| 166 | public String caseResourceDemandingSEFF(ResourceDemandingSEFF object) { |
| 167 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 168 | |
| 169 | ProcessorType pt = lqnBuilder.addProcessor(id); |
| 170 | |
| 171 | TaskType tt = lqnBuilder.addTask(id, pt); |
| 172 | //tt.setMultiplicity(new BigInteger("1")); |
| 173 | //tt.setScheduling(TaskSchedulingType.INF); |
| 174 | |
| 175 | EntryType et = lqnBuilder.addEntry(id, tt); |
| 176 | lqnBuilder.addTaskActivityGraph(tt); |
| 177 | |
| 178 | ResourceDemandingBehaviour rdb = (ResourceDemandingBehaviour)object; |
| 179 | String startId = (String)doSwitch(getStartAction(rdb)); |
| 180 | String stopId = Pcm2LqnHelper.getId(getStopAction(rdb), myContextWrapper); |
| 181 | lqnBuilder.addReplyActivity(id, startId, stopId); |
| 182 | |
| 183 | lqnBuilder.restoreFormerTaskActivityGraph(); |
| 184 | |
| 185 | return et.getName(); |
| 186 | } |
| 187 | |
| 188 | @Override |
| 189 | public String caseLoopAction(LoopAction object) { |
| 190 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 191 | handleLoop(object, id); |
| 192 | return id; |
| 193 | |
| 194 | } |
| 195 | |
| 196 | private void handleLoop(AbstractLoopAction object, String id) { |
| 197 | String startId = handleLoopBody(object,id); |
| 198 | lqnBuilder.addActivityDef(id); // for the loop action |
| 199 | // makes an external call to the task representing the loop body: |
| 200 | ActivityMakingCallType amct = lqnBuilder.addActivityMakingCall(id, |
| 201 | startId, CallType.SYNCH); |
| 202 | amct.setCallsMean(getLoopIterations(object)); |
| 203 | |
| 204 | String successorId = (String)doSwitch(object.getSuccessor_AbstractAction()); |
| 205 | lqnBuilder.addSequencePrecedence(id, successorId); |
| 206 | } |
| 207 | |
| 208 | private String handleLoopBody(AbstractLoopAction loop,String id) { |
| 209 | ProcessorType pt = lqnBuilder.addProcessor(id); |
| 210 | TaskType tt = lqnBuilder.addTask(id,pt); |
| 211 | EntryType et = lqnBuilder.addEntry(id,tt); |
| 212 | lqnBuilder.addTaskActivityGraph(tt); |
| 213 | |
| 214 | ResourceDemandingBehaviour rdb = loop.getBodyBehaviour_Loop(); |
| 215 | String startId = (String) doSwitch(getStartAction(rdb)); |
| 216 | String stopId = Pcm2LqnHelper.getId(getStopAction(rdb), myContextWrapper); |
| 217 | lqnBuilder.addReplyActivity(id, startId, stopId); |
| 218 | |
| 219 | lqnBuilder.restoreFormerTaskActivityGraph(); |
| 220 | |
| 221 | return startId; |
| 222 | } |
| 223 | |
| 224 | private String getLoopIterations(AbstractLoopAction loop) { |
| 225 | ManagedPMF pmf = myContextWrapper.getLoopIterations(loop); |
| 226 | if (pmf != null) { |
| 227 | try { |
| 228 | return pmf.getPmfTimeDomain().getArithmeticMeanValue() + ""; |
| 229 | } catch (DomainNotNumbersException e) { |
| 230 | return "0.0"; |
| 231 | } catch (FunctionNotInTimeDomainException e) { |
| 232 | return "0.0"; |
| 233 | } |
| 234 | } else { |
| 235 | return "0.0"; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | @Override |
| 240 | public String caseCollectionIteratorAction(CollectionIteratorAction object) { |
| 241 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 242 | handleLoop(object, id); |
| 243 | return id; |
| 244 | } |
| 245 | |
| 246 | @Override |
| 247 | public String caseResourceDemandingBehaviour(ResourceDemandingBehaviour object) { |
| 248 | return doSwitch(getStartAction(object)); |
| 249 | } |
| 250 | |
| 251 | @Override |
| 252 | public String caseStartAction(StartAction object) { |
| 253 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 254 | String entryId = ""; |
| 255 | |
| 256 | if (object.eContainer() instanceof ResourceDemandingSEFF){ |
| 257 | ResourceDemandingSEFF rdseff = (ResourceDemandingSEFF)object.eContainer(); |
| 258 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 259 | entryId = Pcm2LqnHelper.getId(rdseff, myContextWrapper)+"_Entry"; |
| 260 | adt.setBoundToEntry(entryId); |
| 261 | } else if (object.eContainer().eContainer() instanceof LoopAction){ |
| 262 | LoopAction la = (LoopAction)object.eContainer().eContainer(); |
| 263 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 264 | entryId = Pcm2LqnHelper.getId(la, myContextWrapper)+"_Entry"; |
| 265 | adt.setBoundToEntry(entryId); |
| 266 | } else if (object.eContainer().eContainer() instanceof CollectionIteratorAction){ |
| 267 | CollectionIteratorAction cia = (CollectionIteratorAction)object.eContainer().eContainer(); |
| 268 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 269 | entryId = Pcm2LqnHelper.getId(cia, myContextWrapper)+"_Entry"; |
| 270 | adt.setBoundToEntry(entryId); |
| 271 | } else if (object.eContainer().eContainer() instanceof SynchronisationPoint){ |
| 272 | lqnBuilder.addActivityDef(id); |
| 273 | } else if (object.eContainer() instanceof ForkedBehaviour){ |
| 274 | ForkedBehaviour fb = (ForkedBehaviour)object.eContainer(); |
| 275 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 276 | entryId = Pcm2LqnHelper.getIdForForkedBehaviour(fb, myContextWrapper)+"_Entry"; |
| 277 | adt.setBoundToEntry(entryId); |
| 278 | } else { //nested resource demanding behaviour |
| 279 | lqnBuilder.addActivityDef(id); |
| 280 | } |
| 281 | |
| 282 | String successorId = (String) doSwitch(object.getSuccessor_AbstractAction()); |
| 283 | lqnBuilder.addSequencePrecedence(id, successorId); |
| 284 | |
| 285 | if (entryId.equals("")) return id; |
| 286 | else return entryId; |
| 287 | } |
| 288 | |
| 289 | |
| 290 | @Override |
| 291 | public String caseBranchAction(BranchAction object) { |
| 292 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 293 | |
| 294 | lqnBuilder.addActivityDef(id); |
| 295 | PrecedenceType ptBegin = lqnBuilder.addBeginBranchPrecedence(id); |
| 296 | PrecedenceType ptEnd = lqnBuilder.addEndBranchPrecedence(); |
| 297 | |
| 298 | EList<AbstractBranchTransition> btList = object.getBranches_Branch(); |
| 299 | for (AbstractBranchTransition bt : btList) { |
| 300 | ResourceDemandingBehaviour rdb = bt.getBranchBehaviour_BranchTransition(); |
| 301 | |
| 302 | // the lqn solver complains if a branch has zero probability |
| 303 | // if(contextWrapper.getBranchProbability(bt)!=0.0){ |
| 304 | Double branchProbNumeric = myContextWrapper.getBranchProbability(bt); |
| 305 | if (branchProbNumeric > 0){ |
| 306 | String startId = (String) doSwitch(rdb); |
| 307 | |
| 308 | String branchProb = branchProbNumeric.toString(); |
| 309 | |
| 310 | lqnBuilder.addActivityOrType(startId,branchProb, ptBegin); |
| 311 | |
| 312 | String stopId = Pcm2LqnHelper.getId(getStopAction(rdb), myContextWrapper); |
| 313 | lqnBuilder.addActivityType(stopId, ptEnd); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | String successorId = (String) doSwitch(object.getSuccessor_AbstractAction()); |
| 318 | ptEnd.getPost().getActivity().setName(successorId); |
| 319 | |
| 320 | //If a precedence with exactly the same activities is already there, |
| 321 | //this one needs to be deleted. |
| 322 | //This can happen if this SEFF is called from multiple contexts. |
| 323 | //TODO: should we not be able to distinguish multiple contexts? |
| 324 | // -> I have put the deletion of duplicate precedences in the LQNBuilder. |
| 325 | |
| 326 | |
| 327 | return id; |
| 328 | } |
| 329 | |
| 330 | @Override |
| 331 | public String caseSetVariableAction(SetVariableAction object) { |
| 332 | Pcm2LqnHelper.getId(object, myContextWrapper); |
| 333 | return doSwitch(object.getSuccessor_AbstractAction()); |
| 334 | } |
| 335 | |
| 336 | @Override |
| 337 | public String caseExternalCallAction(ExternalCallAction object) { |
| 338 | return handleExternalCallAction(object, CallType.SYNCH, object.getSuccessor_AbstractAction()); |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * Handle an {@link ExternalCallAction} |
| 343 | * @param object The {@link ExternalCallAction} |
| 344 | * @param callType |
| 345 | * @param successor The successor action is determined by the caller, so that it does not necessarily have to be |
| 346 | * object.getSuccessor_AbstractAction(). For example, when simplifying a fork with internal ExternalCalls |
| 347 | * to asynchronous LQN calls, the proper successor is the successor of the ForkAction, not of the |
| 348 | * ExternalCall (which is a StopAction that is pruned in that case) |
| 349 | * @return The id of the first generated LQN model element, to be connected with the successor. |
| 350 | */ |
| 351 | private String handleExternalCallAction(ExternalCallAction object, CallType callType, AbstractAction successor){ |
| 352 | String callId = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 353 | |
| 354 | AllocationContext callerAllocationContext = myContextWrapper.getAllCtx(); |
| 355 | |
| 356 | ResourceDemandingSEFF seff = (ResourceDemandingSEFF)myContextWrapper.getNextSEFF(object); |
| 357 | if (seff == null){ |
| 358 | // this is a system external call |
| 359 | // we continue with the internal action added after this action |
| 360 | //logger.warn("Call "+object.getId()+" does not call a seff, ignoring it. Note that time required for system external calls are not supported by PCM2LQN yet."); |
| 361 | return doSwitch(object.getSuccessor_AbstractAction()); |
| 362 | } else { |
| 363 | ContextWrapper oldContextWrapper = (ContextWrapper)myContextWrapper.clone(); |
| 364 | |
| 365 | |
| 366 | List<ContextWrapper> contextWrapperList = myContextWrapper.getContextWrapperFor(object); |
| 367 | List<AllocationContext> calledAllocationContextList = new ArrayList<AllocationContext>(contextWrapperList.size()); |
| 368 | |
| 369 | // if one of the contextWrappers refers to the same allocation context than the current one, then |
| 370 | // then direct all calls to only this one |
| 371 | // assume there is at most component instance per resource container (more should be prohibited by the metamodel) |
| 372 | boolean localComponentInstanceAvailable = false; |
| 373 | ContextWrapper localContextWrapper = null; |
| 374 | for (ContextWrapper contextWrapper : contextWrapperList) { |
| 375 | if (contextWrapper.getAllCtx().getId().equals(oldContextWrapper.getAllCtx().getId())){ |
| 376 | localComponentInstanceAvailable = true; |
| 377 | localContextWrapper = contextWrapper; |
| 378 | break; |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | if (localComponentInstanceAvailable || contextWrapperList.size() == 1){ |
| 383 | // only one component instance is called (either there is only one, or there is a local one). |
| 384 | if (localContextWrapper != null){ |
| 385 | myContextWrapper = localContextWrapper; |
| 386 | } else { |
| 387 | myContextWrapper = contextWrapperList.get(0); |
| 388 | } |
| 389 | AllocationContext toAllocationContext = myContextWrapper.getAllCtx(); |
| 390 | calledAllocationContextList.add(toAllocationContext); |
| 391 | |
| 392 | // create LQN call |
| 393 | createCallActivity(callId, seff, callType); |
| 394 | |
| 395 | } else { |
| 396 | // need to create a branch because several remote component instances are called |
| 397 | // thus, iterate over all context wrappers and call the following SEFF for them. |
| 398 | |
| 399 | double branchProb = 1.0/contextWrapperList.size(); |
| 400 | |
| 401 | for (ContextWrapper contextWrapper : contextWrapperList) { |
| 402 | myContextWrapper = contextWrapper; |
| 403 | |
| 404 | AllocationContext toAllocationContext = myContextWrapper.getAllCtx(); |
| 405 | calledAllocationContextList.add(toAllocationContext); |
| 406 | |
| 407 | // create LQN call |
| 408 | createCallActivity(callId, seff, callType, branchProb); |
| 409 | |
| 410 | // the ends of the branches are connected below after it has been decided whether to include network calls. |
| 411 | } |
| 412 | |
| 413 | } |
| 414 | |
| 415 | myContextWrapper = oldContextWrapper; |
| 416 | |
| 417 | String successorId = (String) doSwitch(successor); |
| 418 | |
| 419 | // Handle network calls. |
| 420 | // Just create a network call before the call created above that calls any network, |
| 421 | // and another one for the response afterwards. |
| 422 | // this is inaccurate, because the network of replica 1 may be called before replica 2 is called now, |
| 423 | // the proper dependency is lost. |
| 424 | // For the LQNS MVA analysis, it does not matter, though, because the mean values will stay the same |
| 425 | |
| 426 | for (AllocationContext targetAllocationContext : calledAllocationContextList) { |
| 427 | |
| 428 | // Add linking resource demand if this is a remote call. |
| 429 | // careful: The linking resource processor is only generated if the latency is != 0. |
| 430 | if (callerAllocationContext.getResourceContainer_AllocationContext() != targetAllocationContext.getResourceContainer_AllocationContext()){ |
| 431 | // call latency entry of linking resource before and after call. |
| 432 | |
| 433 | // get resource that connects the two |
| 434 | CommunicationLinkResourceSpecification link = oldContextWrapper.getConcreteLinkingResource(object, targetAllocationContext); |
| 435 | |
| 436 | // only create a call if latency is larger than 0 |
| 437 | if (link != null && ExpressionHelper.getMeanValue(link.getLatency_CommunicationLinkResourceSpecification()) > 0){ |
| 438 | |
| 439 | String linkId = Pcm2LqnHelper.getIdForCommResource(link.getLinkingResource_CommunicationLinkResourceSpecification(), link.getCommunicationLinkResourceType_CommunicationLinkResourceSpecification()); |
| 440 | String latencyId = Pcm2LqnHelper.getIdForLatency(linkId, callType); |
| 441 | |
| 442 | String networkCallId = "LAN_"+callId+"_"+callType; |
| 443 | String networkResponseId = "LAN_"+callId+"_return"; |
| 444 | |
| 445 | lqnBuilder.addActivityDef(networkCallId); |
| 446 | lqnBuilder.addActivityMakingCall(networkCallId, latencyId+"_Entry", callType); |
| 447 | |
| 448 | // only response if it is a synch call |
| 449 | if (callType == CallType.SYNCH){ |
| 450 | lqnBuilder.addActivityDef(networkResponseId); |
| 451 | lqnBuilder.addActivityMakingCall(networkResponseId, latencyId+"_Entry", callType); |
| 452 | } |
| 453 | |
| 454 | // TODO: call throughput entry if bytesize characterization is available |
| 455 | // there is same very initial implementation at |
| 456 | // contextWrapper.getDelayOnLinkingResource(eca, clrs); |
| 457 | // pay attention to use the right context wraper (old or new?) |
| 458 | |
| 459 | // first LAN call(s), then external call(s), then LAN call(s), then successor |
| 460 | // no response for asynchronous call |
| 461 | lqnBuilder.addSequencePrecedence(networkCallId, callId); |
| 462 | if (callType == CallType.SYNCH){ |
| 463 | lqnBuilder.addSequencePrecedence(callId, networkResponseId); |
| 464 | lqnBuilder.addSequencePrecedence(networkResponseId, successorId); |
| 465 | } else { |
| 466 | lqnBuilder.addSequencePrecedence(callId, successorId); |
| 467 | } |
| 468 | |
| 469 | return networkCallId; |
| 470 | |
| 471 | |
| 472 | } else { |
| 473 | if (link == null){ |
| 474 | logger.warn("No link found between "+callerAllocationContext.getEntityName()+" <"+callerAllocationContext.getId()+"> and "+targetAllocationContext.getEntityName()+" <"+targetAllocationContext.getId()+"> , ignoring this."); |
| 475 | } |
| 476 | } |
| 477 | // else go to return statement below and return the id of the external call itself. |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | //only come here if no linking resource calls have been created, e.g. because there is no latency defined. |
| 482 | lqnBuilder.addSequencePrecedence(callId, successorId); |
| 483 | |
| 484 | |
| 485 | |
| 486 | // all possible communication paths are thus the following |
| 487 | // replication and LAN: branch, LAN, external, LAN, branch, successor |
| 488 | // no replication and LAN: LAN, external, LAN, successor |
| 489 | // no replication and local: external, successor |
| 490 | // |
| 491 | // The last combination, namely |
| 492 | // replication and no LAN: branch, external, branch, successor |
| 493 | // is usually not used because two replicas cannot be on the same node, so branch is always combined with remote. |
| 494 | // However, if a remote call has no latency specified, then this will be generated, ignoring the link. |
| 495 | // |
| 496 | |
| 497 | return callId; // for predecessor |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | private void createCallActivity(String callerId, ResourceDemandingSEFF sefftoBeCalled, CallType callType) { |
| 502 | createCallActivity(callerId, sefftoBeCalled, callType, 1.0); |
| 503 | } |
| 504 | |
| 505 | private void createCallActivity(String callerId, ResourceDemandingSEFF sefftoBeCalled, CallType callType, double callMeans) { |
| 506 | String entryId = ""; |
| 507 | try { |
| 508 | Rdseff2Lqn seffVisitor = new Rdseff2Lqn(lqnBuilder, myContextWrapper); |
| 509 | entryId = (String)seffVisitor.doSwitch(sefftoBeCalled); |
| 510 | } catch (RuntimeException e) { |
| 511 | logger.error("Error while visiting RDSEFF "+sefftoBeCalled.getId()); |
| 512 | e.printStackTrace(); |
| 513 | throw e; |
| 514 | } |
| 515 | |
| 516 | lqnBuilder.addActivityDef(callerId); |
| 517 | lqnBuilder.addActivityMakingCall(callerId, entryId, callType, callMeans); |
| 518 | } |
| 519 | |
| 520 | @Override |
| 521 | public String caseInternalAction(InternalAction object) { |
| 522 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 523 | |
| 524 | EList<ParametricResourceDemand> resDemList = object.getResourceDemand_Action(); |
| 525 | int counter = 0; // for the number of resource demands (mapped to entry name) |
| 526 | for (ParametricResourceDemand resourceDemand : resDemList){ |
| 527 | String processorId = getProcessorName(resourceDemand); |
| 528 | |
| 529 | // // create a new task for the resource demand |
| 530 | // ProcessorType pt = lqnBuilder.getProcessor(processorId); |
| 531 | // TaskType tt = lqnBuilder.addTaskForResourceDemand(id+counter, pt); |
| 532 | // EntryType et = lqnBuilder.addEntry(id+counter, tt); |
| 533 | // et.setType(TypeType.PH1PH2); |
| 534 | |
| 535 | // first a new entry for the resource demand |
| 536 | TaskType tt = lqnBuilder.getTaskForProcessor(processorId); |
| 537 | EntryType et = lqnBuilder.addEntry(id+counter, tt); |
| 538 | et.setType(TypeType.PH1PH2); |
| 539 | |
| 540 | // the entry makes a call to the processor |
| 541 | ActivityPhasesType apt = lqnBuilder.addActivityPhases(id+counter); |
| 542 | Double demand = myContextWrapper.getMeanTimeConsumption(resourceDemand); |
| 543 | String hostDemand = demand.toString(); |
| 544 | apt.setHostDemandMean(hostDemand); |
| 545 | |
| 546 | //if continuous function, get coefficient of variance |
| 547 | //TODO: also get this for stepwise defined functions! |
| 548 | //Check whether this has been a distribution originally |
| 549 | if (myContextWrapper.getIsOriginalPDFFor(resourceDemand)){ |
| 550 | ManagedPDF pdf = myContextWrapper.getTimeConsumptionAsPDF(resourceDemand); |
| 551 | IProbabilityDensityFunction innerPDF = pdf.getPdfTimeDomain(); |
| 552 | if (innerPDF instanceof IContinousPDF){ |
| 553 | IContinousPDF innerContPDF = (IContinousPDF)innerPDF; |
| 554 | double coeffv = innerContPDF.getCoefficientOfVariance(); |
| 555 | Double squaredcv = coeffv * coeffv; |
| 556 | apt.setHostDemandCvsq(squaredcv.toString()); |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | PhaseActivities pa = lqnBuilder.addPhaseActivities(apt); |
| 561 | et.setEntryPhaseActivities(pa); |
| 562 | |
| 563 | // now another activity in the current task graph making the |
| 564 | // call to the entry created for the resource demand |
| 565 | lqnBuilder.addActivityDef(id+counter); |
| 566 | lqnBuilder.addActivityMakingCall(id+counter, et.getName(), CallType.SYNCH); |
| 567 | if (counter<resDemList.size()-1){ |
| 568 | lqnBuilder.addSequencePrecedence(id+counter, id+(counter+1)); |
| 569 | } |
| 570 | |
| 571 | counter++; |
| 572 | } |
| 573 | |
| 574 | String successorId = (String) doSwitch(object.getSuccessor_AbstractAction()); |
| 575 | if ( resDemList.size() > 0){ |
| 576 | //Only add a sequence predecence if there actually was a resource demand in the list, i.e. if an activity etc. has been created |
| 577 | lqnBuilder.addSequencePrecedence(id+(counter-1), successorId); |
| 578 | return id+0; // for predecessor |
| 579 | } else { |
| 580 | //If no resource demands were there, just let the predecessor connect itself to this action's successor (action disappears) |
| 581 | return successorId; |
| 582 | } |
| 583 | |
| 584 | |
| 585 | } |
| 586 | |
| 587 | private String getProcessorName(ParametricResourceDemand resourceDemand) { |
| 588 | ProcessingResourceSpecification prs = myContextWrapper.getConcreteProcessingResource(resourceDemand); |
| 589 | if (prs == null){ |
| 590 | throw new RuntimeException("Could not find "+ProcessingResourceSpecification.class.getName() |
| 591 | +"of type "+resourceDemand.getRequiredResource_ParametricResourceDemand().getEntityName()+"(id:"+resourceDemand.getRequiredResource_ParametricResourceDemand().getId()+")" |
| 592 | +" adressed by resource demand of action "+resourceDemand.getAction_ParametricResourceDemand().getEntityName()+" ("+resourceDemand.getAction_ParametricResourceDemand().getId()+"). Check your model that the required resources are available on the server."); |
| 593 | } |
| 594 | ResourceContainer rc = (ResourceContainer)prs.eContainer(); |
| 595 | ProcessingResourceType prt = prs.getActiveResourceType_ActiveResourceSpecification(); |
| 596 | String name = Pcm2LqnHelper.getIdForProcResource(rc, prt); |
| 597 | return name; |
| 598 | } |
| 599 | |
| 600 | @Override |
| 601 | public String caseStopAction(StopAction object) { |
| 602 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 603 | lqnBuilder.addActivityDef(id); |
| 604 | // Precedence has already been created by predecessor |
| 605 | return id; |
| 606 | } |
| 607 | |
| 608 | private StartAction getStartAction(ResourceDemandingBehaviour behaviour) { |
| 609 | StartAction startAction = (StartAction) EMFQueryHelper.getObjectByType( |
| 610 | behaviour.getSteps_Behaviour(), StartAction.class); |
| 611 | return startAction; |
| 612 | } |
| 613 | |
| 614 | |
| 615 | private StopAction getStopAction(ResourceDemandingBehaviour behaviour) { |
| 616 | StopAction stopAction = (StopAction) EMFQueryHelper.getObjectByType( |
| 617 | behaviour.getSteps_Behaviour(), StopAction.class); |
| 618 | return stopAction; |
| 619 | } |
| 620 | |
| 621 | |
| 622 | public String caseForkActionOld(ForkAction object) { |
| 623 | // if this fork action is asynchronous and only contains an external call, |
| 624 | // it can be modelled in LQN by just changing the call to send-no-reply |
| 625 | // TODO: for now only support one forked behaviour. TODO add several ones, |
| 626 | // should be possible to map them to the same constructs, too. |
| 627 | if (object.getAsynchronousForkedBehaviours_ForkAction().size() == 1 |
| 628 | && (object.getSynchronisingBehaviours_ForkAction() == null |
| 629 | || object.getSynchronisingBehaviours_ForkAction().getSynchronousForkedBehaviours_SynchronisationPoint().size() == 0)){ |
| 630 | ForkedBehaviour innerFork = object.getAsynchronousForkedBehaviours_ForkAction().get(0); |
| 631 | // if there is only an external call, that means there are three steps (start, call, stop) and one is an external call |
| 632 | if (innerFork.getSteps_Behaviour().size() == 3){ |
| 633 | // find the external call action, the other two have to be start and stop in a valid model |
| 634 | ExternalCallAction eca = null; |
| 635 | for (AbstractAction action : innerFork.getSteps_Behaviour()) { |
| 636 | if (action instanceof ExternalCallAction){ |
| 637 | eca = (ExternalCallAction)action; |
| 638 | break; |
| 639 | } |
| 640 | } |
| 641 | if (eca != null){ |
| 642 | // we have the preconditions for using an LQN send-no-response call |
| 643 | return handleExternalCallAction(eca, CallType.ASYNCH, object.getSuccessor_AbstractAction()); |
| 644 | } |
| 645 | // else return super.caseFork (i.e. go to end of method) |
| 646 | } |
| 647 | |
| 648 | } |
| 649 | logger.warn("No arbitrary Fork action supported yet, only asnychronous Forks containing a single ExternalCall are supported."); |
| 650 | |
| 651 | return super.caseForkAction(object); |
| 652 | |
| 653 | } |
| 654 | |
| 655 | @Override |
| 656 | public String caseForkAction(ForkAction object){ |
| 657 | String id = Pcm2LqnHelper.getId(object, myContextWrapper); |
| 658 | ActivityDefType adt = lqnBuilder.addActivityDef(id); |
| 659 | |
| 660 | String currentId = id; |
| 661 | String predecessorId = id; |
| 662 | |
| 663 | EList<ForkedBehaviour> asyncBehList = object.getAsynchronousForkedBehaviours_ForkAction(); |
| 664 | for (ForkedBehaviour asyncBeh : asyncBehList){ |
| 665 | currentId = Pcm2LqnHelper.getIdForForkedBehaviour(asyncBeh, myContextWrapper); |
| 666 | |
| 667 | // create new task graph for the forked behaviour |
| 668 | ProcessorType pt = lqnBuilder.addProcessor(currentId); |
| 669 | TaskType tt = lqnBuilder.addTask(currentId,pt); |
| 670 | EntryType et = lqnBuilder.addEntry(currentId,tt); |
| 671 | lqnBuilder.addTaskActivityGraph(tt); |
| 672 | |
| 673 | // create the actions of the new task graph by traversing the forked behavior's steps |
| 674 | doSwitch(getStartAction(asyncBeh)); |
| 675 | |
| 676 | lqnBuilder.restoreFormerTaskActivityGraph(); |
| 677 | |
| 678 | // create an asynchronous external call to the task representing the forked behaviour |
| 679 | lqnBuilder.addActivityDef(currentId+"_Action"); |
| 680 | lqnBuilder.addActivityMakingCall(currentId+"_Action", currentId+"_Entry", CallType.ASYNCH); |
| 681 | |
| 682 | lqnBuilder.addSequencePrecedence(predecessorId, currentId+"_Action"); |
| 683 | predecessorId = currentId+"_Action"; |
| 684 | |
| 685 | } |
| 686 | |
| 687 | if (object.getSynchronisingBehaviours_ForkAction() != null |
| 688 | && object.getSynchronisingBehaviours_ForkAction().getSynchronousForkedBehaviours_SynchronisationPoint().size() > 0) { |
| 689 | EList<ForkedBehaviour> syncBehList = object.getSynchronisingBehaviours_ForkAction().getSynchronousForkedBehaviours_SynchronisationPoint(); |
| 690 | |
| 691 | PrecedenceType ptBegin = lqnBuilder.addBeginForkPrecedence(currentId+"_Action"); |
| 692 | PrecedenceType ptEnd = lqnBuilder.addEndForkPrecedence(); |
| 693 | |
| 694 | for (ForkedBehaviour syncBeh : syncBehList){ |
| 695 | |
| 696 | String startId = doSwitch(getStartAction(syncBeh)); |
| 697 | lqnBuilder.addActivityToPostAnd(startId, ptBegin); |
| 698 | |
| 699 | String stopId = Pcm2LqnHelper.getId(getStopAction(syncBeh), myContextWrapper); |
| 700 | lqnBuilder.addActivityToPreAnd(stopId, ptEnd); |
| 701 | |
| 702 | } |
| 703 | String successorId = (String) doSwitch(object.getSuccessor_AbstractAction()); |
| 704 | ptEnd.getPost().getActivity().setName(successorId); |
| 705 | } else { |
| 706 | String successorId = (String) doSwitch(object.getSuccessor_AbstractAction()); |
| 707 | lqnBuilder.addSequencePrecedence(currentId + "_Action", successorId); |
| 708 | } |
| 709 | |
| 710 | return id; |
| 711 | } |
| 712 | |
| 713 | |
| 714 | } |