ECOMP-ControlloopPolicy/src/main/java/org/openecomp/policy/controlloop/compiler/ControlLoopCompiler.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ECOMP Policy Engine
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.policy.controlloop.compiler;
  22
  23 import java.io.InputStream;
  24 import java.io.Serializable;
  25 import java.util.Collections;
  26 import java.util.HashMap;
  27 import java.util.List;
  28 import java.util.Map;
  29 import java.util.Map.Entry;
  30
  31 import org.jgrapht.DirectedGraph;
  32 import org.jgrapht.graph.ClassBasedEdgeFactory;
  33 import org.jgrapht.graph.DefaultEdge;
  34 import org.jgrapht.graph.DirectedMultigraph;
  35 import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
  36 import org.openecomp.policy.common.logging.flexlogger.Logger;
  37 import org.openecomp.policy.controlloop.policy.ControlLoop;
  38 import org.openecomp.policy.controlloop.policy.ControlLoopPolicy;
  39 import org.openecomp.policy.controlloop.policy.FinalResult;
  40 import org.openecomp.policy.controlloop.policy.Policy;
  41 import org.openecomp.policy.controlloop.policy.PolicyResult;
  42 import org.openecomp.policy.controlloop.policy.TargetType;
  43 import org.yaml.snakeyaml.Yaml;
  44 import org.yaml.snakeyaml.constructor.Constructor;
  45
  46 import com.google.common.collect.ImmutableList;
  47 import com.google.common.collect.ImmutableMap;
  48
  49 public class ControlLoopCompiler {
  50         private static Logger LOGGER = FlexLogger.getLogger(ControlLoopCompiler.class.getName());
  51
  52         public static ControlLoopPolicy compile(ControlLoopPolicy policy, ControlLoopCompilerCallback callback) throws CompilerException {
  53                 //
  54                 // Ensure the control loop is sane
  55                 //
  56                 validateControlLoop(policy.getControlLoop(), callback);
  57                 //
  58                 // Validate the policies
  59                 //
  60                 validatePolicies(policy, callback);
  61
  62                 return policy;
  63         }
  64
  65         public static ControlLoopPolicy compile(InputStream yamlSpecification, ControlLoopCompilerCallback callback) throws CompilerException {
  66                 Yaml yaml = new Yaml(new Constructor(ControlLoopPolicy.class));
  67                 Object obj = yaml.load(yamlSpecification);
  68                 if (obj == null) {
  69                         throw new CompilerException("Could not parse yaml specification.");
  70                 }
  71                 if (! (obj instanceof ControlLoopPolicy)) {
  72                         throw new CompilerException("Yaml could not parse specification into required ControlLoopPolicy object");
  73                 }
  74                 return ControlLoopCompiler.compile((ControlLoopPolicy) obj, callback);
  75         }
  76
  77         private static void validateControlLoop(ControlLoop controlLoop, ControlLoopCompilerCallback callback) throws CompilerException {
  78                 if (controlLoop == null && callback != null) {
  79                         callback.onError("controlLoop cannot be null");
  80                 }
  81                 if (controlLoop!=null){
  82                         if ((controlLoop.getControlLoopName() == null || controlLoop.getControlLoopName().length() < 1) && callback != null) {
  83                                 callback.onError("Missing controlLoopName");
  84                         }
  85                         if ((!controlLoop.getVersion().contentEquals(ControlLoop.getVERSION())) && callback != null) {
  86                                 callback.onError("Unsupported version for this compiler");
  87                         }
  88                         if (controlLoop.getTrigger_policy() == null || controlLoop.getTrigger_policy().length() < 1) {
  89                                 throw new CompilerException("trigger_policy is not valid");
  90                         }
  91                 }
  92         }
  93
  94         private static void validatePolicies(ControlLoopPolicy policy, ControlLoopCompilerCallback callback) throws CompilerException {
  95                 if (policy == null) {
  96                         throw new CompilerException("policy cannot be null");
  97                 }
  98                 //
  99                 // verify controlLoop overall timeout should be no less than the sum of operational policy timeouts
 100                 //
 101                 if (policy.getPolicies() == null) {
 102             callback.onWarning("controlLoop is an open loop.");
 103         }
 104         else{
 105             int sum = 0;
 106                     for (Policy operPolicy : policy.getPolicies()) {
 107                         sum += operPolicy.getTimeout().intValue();
 108                     }
 109                     if (policy.getControlLoop().getTimeout().intValue() < sum && callback != null) {
 110                         callback.onError("controlLoop overall timeout is less than the sum of operational policy timeouts.");
 111                     }
 112                     //
 113                     // For this version we can use a directed multigraph, in the future we may not be able to
 114                     //
 115                     DirectedGraph<NodeWrapper, LabeledEdge> graph = new DirectedMultigraph<>(new ClassBasedEdgeFactory<NodeWrapper, LabeledEdge>(LabeledEdge.class));
 116                     //
 117                     // Check to see if the trigger Event is for OpenLoop, we do so by
 118                     // attempting to create a FinalResult object from it. If its a policy id, this should
 119                     // return null.
 120                     //
 121                     FinalResult triggerResult = FinalResult.toResult(policy.getControlLoop().getTrigger_policy());
 122                     TriggerNodeWrapper triggerNode;
 123                     //
 124                     // Did this turn into a FinalResult object?
 125                     //
 126                     if (triggerResult != null) {
 127                         //
 128                         // Ensure they didn't use some other FinalResult code
 129                         //
 130                         if (triggerResult != FinalResult.FINAL_OPENLOOP) {
 131                                 throw new CompilerException("Unexpected Final Result for trigger_policy, should only be " + FinalResult.FINAL_OPENLOOP.toString() + " or a valid Policy ID");
 132                         }
 133                         //
 134                         // They really shouldn't have any policies attached.
 135                         //
 136                         if ((policy.getPolicies() != null || policy.getPolicies().isEmpty())&& callback != null ) {
 137                                 callback.onWarning("Open Loop policy contains policies. The policies will never be invoked.");
 138                         }
 139                         return;
 140                         //
 141                     } else {
 142                         //
 143                         // Ok, not a FinalResult object so let's assume that it is a Policy. Which it should be.
 144                         //
 145                         triggerNode = new TriggerNodeWrapper(policy.getControlLoop().getControlLoopName());
 146                     }
 147                     //
 148                     // Add in the trigger node
 149                     //
 150                     graph.addVertex(triggerNode);
 151                     //
 152                     // Add in our Final Result nodes. All paths should end to these nodes.
 153                     //
 154                     FinalResultNodeWrapper finalSuccess = new FinalResultNodeWrapper(FinalResult.FINAL_SUCCESS);
 155                     FinalResultNodeWrapper finalFailure = new FinalResultNodeWrapper(FinalResult.FINAL_FAILURE);
 156                     FinalResultNodeWrapper finalFailureTimeout = new FinalResultNodeWrapper(FinalResult.FINAL_FAILURE_TIMEOUT);
 157                     FinalResultNodeWrapper finalFailureRetries = new FinalResultNodeWrapper(FinalResult.FINAL_FAILURE_RETRIES);
 158                     FinalResultNodeWrapper finalFailureException = new FinalResultNodeWrapper(FinalResult.FINAL_FAILURE_EXCEPTION);
 159                     FinalResultNodeWrapper finalFailureGuard = new FinalResultNodeWrapper(FinalResult.FINAL_FAILURE_GUARD);
 160                     graph.addVertex(finalSuccess);
 161                     graph.addVertex(finalFailure);
 162                     graph.addVertex(finalFailureTimeout);
 163                     graph.addVertex(finalFailureRetries);
 164                     graph.addVertex(finalFailureException);
 165                     graph.addVertex(finalFailureGuard);
 166                     //
 167                     // Work through the policies and add them in as nodes.
 168                     //
 169                     Map<Policy, PolicyNodeWrapper> mapNodes = new HashMap<>();
 170                     for (Policy operPolicy : policy.getPolicies()) {
 171                         //
 172                         // Is it still ok to add?
 173                         //
 174                         if (!okToAdd(operPolicy, callback)) {
 175                                 //
 176                                 // Do not add it in
 177                                 //
 178                                 continue;
 179                         }
 180                         //
 181                         // Create wrapper policy node and save it into our map so we can
 182                         // easily retrieve it.
 183                         //
 184                         PolicyNodeWrapper node = new PolicyNodeWrapper(operPolicy);
 185                         mapNodes.put(operPolicy, node);
 186                         graph.addVertex(node);
 187                         //
 188                         // Is this the trigger policy?
 189                         //
 190                         if (operPolicy.getId().equals(policy.getControlLoop().getTrigger_policy())) {
 191                                 //
 192                                 // Yes add an edge from our trigger event node to this policy
 193                                 //
 194                                 graph.addEdge(triggerNode, node, new LabeledEdge(triggerNode, node, new TriggerEdgeWrapper("ONSET")));
 195                         }
 196                     }
 197                     //
 198                     // last sweep to connect remaining edges for policy results
 199                     //
 200                     for (Policy operPolicy : policy.getPolicies()) {
 201                         PolicyNodeWrapper node = mapNodes.get(operPolicy);
 202                         //
 203                         // Just ensure this has something
 204                         //
 205                         if (node == null) {
 206                                 continue;
 207                         }
 208                         if (FinalResult.isResult(operPolicy.getSuccess(), FinalResult.FINAL_SUCCESS)) {
 209                                 graph.addEdge(node, finalSuccess, new LabeledEdge(node, finalSuccess, new FinalResultEdgeWrapper(FinalResult.FINAL_SUCCESS)));
 210                         } else {
 211                                 PolicyNodeWrapper toNode = findPolicyNode(mapNodes, operPolicy.getSuccess());
 212                                 if (toNode == null) {
 213                                         throw new CompilerException("Operation Policy " + operPolicy.getId() + " success is connected to unknown policy " + operPolicy.getSuccess());
 214                                 } else {
 215                                  graph.addEdge(node, toNode, new LabeledEdge(node, toNode, new PolicyResultEdgeWrapper(PolicyResult.SUCCESS)));
 216                                 }
 217                         }
 218                         if (FinalResult.isResult(operPolicy.getFailure(), FinalResult.FINAL_FAILURE)) {
 219                                 graph.addEdge(node, finalFailure, new LabeledEdge(node, finalFailure, new FinalResultEdgeWrapper(FinalResult.FINAL_FAILURE)));
 220                         } else {
 221                                 PolicyNodeWrapper toNode = findPolicyNode(mapNodes, operPolicy.getFailure());
 222                                 if (toNode == null) {
 223                                         throw new CompilerException("Operation Policy " + operPolicy.getId() + " failure is connected to unknown policy " + operPolicy.getFailure());
 224                                 } else {
 225                                         graph.addEdge(node, toNode, new LabeledEdge(node, toNode, new PolicyResultEdgeWrapper(PolicyResult.FAILURE)));
 226                                 }
 227                         }
 228                         if (FinalResult.isResult(operPolicy.getFailure_timeout(), FinalResult.FINAL_FAILURE_TIMEOUT)) {
 229                                 graph.addEdge(node, finalFailureTimeout, new LabeledEdge(node, finalFailureTimeout, new FinalResultEdgeWrapper(FinalResult.FINAL_FAILURE_TIMEOUT)));
 230                         } else {
 231                                 PolicyNodeWrapper toNode = findPolicyNode(mapNodes, operPolicy.getFailure_timeout());
 232                                 if (toNode == null) {
 233                                         throw new CompilerException("Operation Policy " + operPolicy.getId() + " failure_timeout is connected to unknown policy " + operPolicy.getFailure_timeout());
 234                                 } else {
 235                                         graph.addEdge(node, toNode, new LabeledEdge(node, toNode, new PolicyResultEdgeWrapper(PolicyResult.FAILURE_TIMEOUT)));
 236                                 }
 237                         }
 238                         if (FinalResult.isResult(operPolicy.getFailure_retries(), FinalResult.FINAL_FAILURE_RETRIES)) {
 239                                 graph.addEdge(node, finalFailureRetries, new LabeledEdge(node, finalFailureRetries, new FinalResultEdgeWrapper(FinalResult.FINAL_FAILURE_RETRIES)));
 240                         } else {
 241                                 PolicyNodeWrapper toNode = findPolicyNode(mapNodes, operPolicy.getFailure_retries());
 242                                 if (toNode == null) {
 243                                         throw new CompilerException("Operation Policy " + operPolicy.getId() + " failure_retries is connected to unknown policy " + operPolicy.getFailure_retries());
 244                                 } else {
 245                                         graph.addEdge(node, toNode, new LabeledEdge(node, toNode, new PolicyResultEdgeWrapper(PolicyResult.FAILURE_RETRIES)));
 246                                 }
 247                         }
 248                         if (FinalResult.isResult(operPolicy.getFailure_exception(), FinalResult.FINAL_FAILURE_EXCEPTION)) {
 249                                 graph.addEdge(node, finalFailureException, new LabeledEdge(node, finalFailureException, new FinalResultEdgeWrapper(FinalResult.FINAL_FAILURE_EXCEPTION)));
 250                         } else {
 251                                 PolicyNodeWrapper toNode = findPolicyNode(mapNodes, operPolicy.getFailure_exception());
 252                                 if (toNode == null) {
 253                                         throw new CompilerException("Operation Policy " + operPolicy.getId() + " failure_exception is connected to unknown policy " + operPolicy.getFailure_exception());
 254                                 } else {
 255                                         graph.addEdge(node, toNode, new LabeledEdge(node, toNode, new PolicyResultEdgeWrapper(PolicyResult.FAILURE_EXCEPTION)));
 256                                 }
 257                         }
 258                         if (FinalResult.isResult(operPolicy.getFailure_guard(), FinalResult.FINAL_FAILURE_GUARD)) {
 259                                 graph.addEdge(node, finalFailureGuard, new LabeledEdge(node, finalFailureGuard, new FinalResultEdgeWrapper(FinalResult.FINAL_FAILURE_GUARD)));
 260                         } else {
 261                                 PolicyNodeWrapper toNode = findPolicyNode(mapNodes, operPolicy.getFailure_guard());
 262                                 if (toNode == null) {
 263                                         throw new CompilerException("Operation Policy " + operPolicy.getId() + " failure_guard is connected to unknown policy " + operPolicy.getFailure_guard());
 264                                 } else {
 265                                         graph.addEdge(node, toNode, new LabeledEdge(node, toNode, new PolicyResultEdgeWrapper(PolicyResult.FAILURE_GUARD)));
 266                                 }
 267                         }
 268                 }
 269                     //
 270                     // Now validate all the nodes/edges
 271                     //
 272                     for (NodeWrapper node : graph.vertexSet()) {
 273                         if (node instanceof TriggerNodeWrapper) {
 274                                 LOGGER.info("Trigger Node " + node.toString());
 275                                 if (graph.inDegreeOf(node) > 0 ) {
 276                                         //
 277                                         // Really should NEVER get here unless someone messed up the code above.
 278                                         //
 279                                         throw new CompilerException("No inputs to event trigger");
 280                                 }
 281                                 //
 282                                 // Should always be 1, except in the future we may support multiple events
 283                                 //
 284                                 if (graph.outDegreeOf(node) > 1) {
 285                                         throw new CompilerException("The event trigger should only go to ONE node");
 286                                 }
 287                         } else if (node instanceof FinalResultNodeWrapper) {
 288                                 LOGGER.info("FinalResult Node " + node.toString());
 289                                 //
 290                                 // FinalResult nodes should NEVER have an out edge
 291                                 //
 292                                 if (graph.outDegreeOf(node) > 0) {
 293                                         throw new CompilerException("FinalResult nodes should never have any out edges.");
 294                                 }
 295                         } else if (node instanceof PolicyNodeWrapper) {
 296                                 LOGGER.info("Policy Node " + node.toString());
 297                                 //
 298                                 // All Policy Nodes should have the 5 out degrees defined.
 299                                 //
 300                                 if (graph.outDegreeOf(node) != 6) {
 301                                         throw new CompilerException("Policy node should ALWAYS have 6 out degrees.");
 302                                 }
 303                                 //
 304                                 // All Policy Nodes should have at least 1 in degrees
 305                                 //
 306                                 if (graph.inDegreeOf(node) == 0 && callback != null) {
 307                                         callback.onWarning("Policy " + node.getID() + " is not reachable.");
 308                                 }
 309                         }
 310                         for (LabeledEdge edge : graph.outgoingEdgesOf(node)){
 311                                 LOGGER.info(edge.from.getID() + " invokes " + edge.to.getID() + " upon " + edge.edge.getID());
 312                         }
 313                     }
 314             }
 315         }
 316
 317         private static boolean okToAdd(Policy operPolicy, ControlLoopCompilerCallback callback) {
 318                 //
 319         // Check the policy id and make sure its sane
 320         //
 321         boolean okToAdd = true;
 322         if (operPolicy.getId() == null || operPolicy.getId().length() < 1) {
 323                 if (callback != null) {
 324                         callback.onError("Operational Policy has an bad ID");
 325                 }
 326                 okToAdd = false;
 327         }
 328         //
 329         // Check if they decided to make the ID a result object
 330         //
 331         if (PolicyResult.toResult(operPolicy.getId()) != null) {
 332                 if (callback != null) {
 333                         callback.onError("Policy id is set to a PolicyResult " + operPolicy.getId());
 334                 }
 335                 okToAdd = false;
 336         }
 337         if (FinalResult.toResult(operPolicy.getId()) != null) {
 338                 if (callback != null) {
 339                         callback.onError("Policy id is set to a FinalResult " + operPolicy.getId());
 340                 }
 341                 okToAdd = false;
 342         }
 343         //
 344         // Check that the actor/recipe/target are valid
 345         //
 346         if (operPolicy.getActor() == null) {
 347                 if (callback != null) {
 348                         callback.onError("Policy actor is null");
 349                 }
 350                 okToAdd = false;
 351         }
 352         //
 353         // Construct a list for all valid actors
 354         //
 355         ImmutableList<String> actors = ImmutableList.of("APPC", "AOTS", "MSO", "SDNO", "SDNR", "AAI");
 356         //
 357         if (operPolicy.getActor() != null && (!actors.contains(operPolicy.getActor())) ) {
 358                 if (callback != null) {
 359                         callback.onError("Policy actor is invalid");
 360                 }
 361                 okToAdd = false;
 362         }
 363         if (operPolicy.getRecipe() == null) {
 364                 if (callback != null) {
 365                         callback.onError("Policy recipe is null");
 366                 }
 367                 okToAdd = false;
 368         }
 369         //
 370         // NOTE: We need a way to find the acceptable recipe values (either Enum or a database that has these)
 371         //
 372         ImmutableMap<String, List<String>> recipes = new ImmutableMap.Builder<String, List<String>>()
 373                                 .put("APPC", ImmutableList.of("Restart", "Rebuild", "Migrate", "ModifyConfig"))
 374                         .put("AOTS", ImmutableList.of("checkMaintenanceWindow", "checkENodeBTicketHours", "checkEquipmentStatus", "checkEimStatus", "checkEquipmentMaintenance"))
 375                         .put("MSO", ImmutableList.of("VF Module Create"))
 376                         .put("SDNO", ImmutableList.of("health-diagnostic-type", "health-diagnostic", "health-diagnostic-history", "health-diagnostic-commands", "health-diagnostic-aes"))
 377                         .put("SDNR", ImmutableList.of("Restart", "Reboot"))
 378                         .build();
 379         //
 380         if (operPolicy.getRecipe() != null && (!recipes.getOrDefault(operPolicy.getActor(), Collections.emptyList()).contains(operPolicy.getRecipe()))) {
 381                 if (callback != null) {
 382                         callback.onError("Policy recipe is invalid");
 383                 }
 384                 okToAdd = false;
 385         }
 386         if (operPolicy.getTarget() == null) {
 387                 if (callback != null) {
 388                         callback.onError("Policy target is null");
 389                 }
 390                 okToAdd = false;
 391         }
 392         if (operPolicy.getTarget() != null && operPolicy.getTarget().getType() != TargetType.VM && operPolicy.getTarget().getType() != TargetType.VFC && operPolicy.getTarget().getType() != TargetType.PNF) {
 393                 if (callback != null) {
 394                         callback.onError("Policy target is invalid");
 395                 }
 396                 okToAdd = false;
 397         }
 398         //
 399         // Check that policy results are connected to either default final * or another policy
 400         //
 401         if (FinalResult.toResult(operPolicy.getSuccess()) != null && operPolicy.getSuccess() != FinalResult.FINAL_SUCCESS.toString()) {
 402                 if (callback != null) {
 403                         callback.onError("Policy success is neither another policy nor FINAL_SUCCESS");
 404                 }
 405                 okToAdd = false;
 406         }
 407         if (FinalResult.toResult(operPolicy.getFailure()) != null && operPolicy.getFailure() != FinalResult.FINAL_FAILURE.toString()) {
 408                 if (callback != null) {
 409                         callback.onError("Policy failure is neither another policy nor FINAL_FAILURE");
 410                 }
 411                 okToAdd = false;
 412         }
 413         if (FinalResult.toResult(operPolicy.getFailure_retries()) != null && operPolicy.getFailure_retries() != FinalResult.FINAL_FAILURE_RETRIES.toString()) {
 414                 if (callback != null) {
 415                         callback.onError("Policy failure retries is neither another policy nor FINAL_FAILURE_RETRIES");
 416                 }
 417                 okToAdd = false;
 418         }
 419         if (FinalResult.toResult(operPolicy.getFailure_timeout()) != null && operPolicy.getFailure_timeout() != FinalResult.FINAL_FAILURE_TIMEOUT.toString()) {
 420                 if (callback != null) {
 421                         callback.onError("Policy failure timeout is neither another policy nor FINAL_FAILURE_TIMEOUT");
 422                 }
 423                 okToAdd = false;
 424         }
 425         if (FinalResult.toResult(operPolicy.getFailure_exception()) != null && operPolicy.getFailure_exception() != FinalResult.FINAL_FAILURE_EXCEPTION.toString()) {
 426                 if (callback != null) {
 427                         callback.onError("Policy failure exception is neither another policy nor FINAL_FAILURE_EXCEPTION");
 428                 }
 429                 okToAdd = false;
 430         }
 431         if (FinalResult.toResult(operPolicy.getFailure_guard()) != null && operPolicy.getFailure_guard() != FinalResult.FINAL_FAILURE_GUARD.toString()) {
 432                 if (callback != null) {
 433                         callback.onError("Policy failure guard is neither another policy nor FINAL_FAILURE_GUARD");
 434                 }
 435                 okToAdd = false;
 436         }
 437         return okToAdd;
 438         }
 439
 440         private static PolicyNodeWrapper findPolicyNode(Map<Policy, PolicyNodeWrapper> mapNodes, String id) {
 441                 for (Entry<Policy, PolicyNodeWrapper> entry : mapNodes.entrySet()) {
 442                         if (entry.getKey().getId().equals(id)) {
 443                                 return entry.getValue();
 444                         }
 445                 }
 446                 return null;
 447         }
 448
 449         @FunctionalInterface
 450         private interface NodeWrapper extends Serializable{
 451                 public String   getID();
 452         }
 453
 454         private static class TriggerNodeWrapper implements NodeWrapper {
 455                 private static final long serialVersionUID = -187644087811478349L;
 456                 private String closedLoopControlName;
 457
 458                 public TriggerNodeWrapper(String closedLoopControlName) {
 459                         this.closedLoopControlName = closedLoopControlName;
 460                 }
 461
 462                 @Override
 463                 public String toString() {
 464                         return "TriggerNodeWrapper [closedLoopControlName=" + closedLoopControlName + "]";
 465                 }
 466
 467                 @Override
 468                 public String getID() {
 469                         return closedLoopControlName;
 470                 }
 471
 472         }
 473
 474         private static class FinalResultNodeWrapper implements NodeWrapper {
 475                 private static final long serialVersionUID = 8540008796302474613L;
 476                 private FinalResult result;
 477
 478                 public FinalResultNodeWrapper(FinalResult result) {
 479                         this.result = result;
 480                 }
 481
 482                 @Override
 483                 public String toString() {
 484                         return "FinalResultNodeWrapper [result=" + result + "]";
 485                 }
 486
 487                 @Override
 488                 public String getID() {
 489                         return result.toString();
 490                 }
 491         }
 492
 493         private static class PolicyNodeWrapper implements NodeWrapper {
 494                 private static final long serialVersionUID = 8170162175653823082L;
 495                 private Policy policy;
 496
 497                 public PolicyNodeWrapper(Policy operPolicy) {
 498                         this.policy = operPolicy;
 499                 }
 500
 501                 @Override
 502                 public String toString() {
 503                         return "PolicyNodeWrapper [policy=" + policy + "]";
 504                 }
 505
 506                 @Override
 507                 public String getID() {
 508                         return policy.getId();
 509                 }
 510         }
 511
 512         @FunctionalInterface
 513         private interface EdgeWrapper extends Serializable{
 514                 public String getID();
 515
 516         }
 517
 518         private static class TriggerEdgeWrapper implements EdgeWrapper {
 519                 private static final long serialVersionUID = 2678151552623278863L;
 520                 private String trigger;
 521
 522                 public TriggerEdgeWrapper(String trigger) {
 523                         this.trigger = trigger;
 524                 }
 525
 526                 @Override
 527                 public String getID() {
 528                         return trigger;
 529                 }
 530
 531                 @Override
 532                 public String toString() {
 533                         return "TriggerEdgeWrapper [trigger=" + trigger + "]";
 534                 }
 535
 536         }
 537
 538         private static class PolicyResultEdgeWrapper implements EdgeWrapper {
 539                 private static final long serialVersionUID = 6078569477021558310L;
 540                 private PolicyResult policyResult;
 541
 542                 public PolicyResultEdgeWrapper(PolicyResult policyResult) {
 543                         super();
 544                         this.policyResult = policyResult;
 545                 }
 546
 547                 @Override
 548                 public String toString() {
 549                         return "PolicyResultEdgeWrapper [policyResult=" + policyResult + "]";
 550                 }
 551
 552                 @Override
 553                 public String getID() {
 554                         return policyResult.toString();
 555                 }
 556
 557
 558         }
 559
 560         private static class FinalResultEdgeWrapper implements EdgeWrapper {
 561                 private static final long serialVersionUID = -1486381946896779840L;
 562                 private FinalResult finalResult;
 563                 public FinalResultEdgeWrapper(FinalResult result) {
 564                         this.finalResult = result;
 565                 }
 566
 567                 @Override
 568                 public String toString() {
 569                         return "FinalResultEdgeWrapper [finalResult=" + finalResult + "]";
 570                 }
 571
 572                 @Override
 573                 public String getID() {
 574                         return finalResult.toString();
 575                 }
 576         }
 577
 578
 579         private static class LabeledEdge extends DefaultEdge {
 580                 private static final long serialVersionUID = 579384429573385524L;
 581
 582                 private NodeWrapper from;
 583                 private NodeWrapper to;
 584                 private EdgeWrapper edge;
 585
 586                 public LabeledEdge(NodeWrapper from, NodeWrapper to, EdgeWrapper edge) {
 587                         this.from = from;
 588                         this.to = to;
 589                         this.edge = edge;
 590                 }
 591
 592                 @SuppressWarnings("unused")
 593                 public NodeWrapper from() {
 594                         return from;
 595                 }
 596
 597                 @SuppressWarnings("unused")
 598                 public NodeWrapper to() {
 599                         return to;
 600                 }
 601
 602                 @SuppressWarnings("unused")
 603                 public EdgeWrapper edge() {
 604                         return edge;
 605                 }
 606
 607                 @Override
 608                 public String toString() {
 609                         return "LabeledEdge [from=" + from + ", to=" + to + ", edge=" + edge + "]";
 610                 }
 611         }
 612
 613 }