Package org.infinispan.container.versioning

Examples of org.infinispan.container.versioning.EntryVersionsMap

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   public void addVersionRead(Object key, EntryVersion version) {
      if (version == null) {
         return;
      }
      if (versionsSeenMap == null) {
         versionsSeenMap = new EntryVersionsMap();
      }
      if (!versionsSeenMap.containsKey(key)) {
         if (log.isTraceEnabled()) {
            log.tracef("Transaction %s read %s with version %s", getGlobalTransaction().globalId(), key, version);
         }
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   public void replaceVersionRead(Object key, EntryVersion version) {
      if (version == null) {
         return;
      }
      if (versionsSeenMap == null) {
         versionsSeenMap = new EntryVersionsMap();
      }
      EntryVersion oldVersion = versionsSeenMap.put(key, (IncrementableEntryVersion) version);
      if (log.isTraceEnabled()) {
         log.tracef("Transaction %s replaced version for key %s. old=%s, new=%s", getGlobalTransaction().globalId(), key,
                    oldVersion, version);
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      }
   }

   @Override
   public EntryVersionsMap getVersionsRead() {
      return versionsSeenMap == null ? new EntryVersionsMap() : versionsSeenMap;
   }
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                                                                                VersionedPrepareCommand prepareCommand) {
         if (context.isOriginLocal()) {
            throw new IllegalStateException("This must not be reached");
         }

         EntryVersionsMap updatedVersionMap = new EntryVersionsMap();

         if (!((TotalOrderPrepareCommand) prepareCommand).skipWriteSkewCheck()) {
            updatedVersionMap = performTotalOrderWriteSkewCheckAndReturnNewVersions(prepareCommand, dataContainer,
                                                                                    versionGenerator, context, keySpecificLogic);
         }

         for (WriteCommand c : prepareCommand.getModifications()) {
            for (Object k : c.getAffectedKeys()) {
               if (keySpecificLogic.performCheckOnKey(k)) {
                  if (!updatedVersionMap.containsKey(k)) {
                     updatedVersionMap.put(k, null);
                  }
               }
            }
         }
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      }

      private EntryVersionsMap clusteredCreateNewVersionsAndCheckForWriteSkews(VersionGenerator versionGenerator, TxInvocationContext context,
                                                                               VersionedPrepareCommand prepareCommand) {
         // Perform a write skew check on mapped entries.
         EntryVersionsMap uv = performWriteSkewCheckAndReturnNewVersions(prepareCommand, dataContainer,
                                                                         versionGenerator, context,
                                                                         keySpecificLogic);

         CacheTransaction cacheTransaction = context.getCacheTransaction();
         EntryVersionsMap uvOld = cacheTransaction.getUpdatedEntryVersions();
         if (uvOld != null && !uvOld.isEmpty()) {
            uvOld.putAll(uv);
            uv = uvOld;
         }
         cacheTransaction.setUpdatedEntryVersions(uv);
         return (uv.isEmpty()) ? null : uv;
      }
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* @since 5.1
*/
public class WriteSkewHelper {
   public static void setVersionsSeenOnPrepareCommand(VersionedPrepareCommand command, TxInvocationContext context) {
      // Build a map of keys to versions as they were seen by the transaction originator's transaction context
      EntryVersionsMap vs = new EntryVersionsMap();
      for (WriteCommand wc : command.getModifications()) {
         for (Object k : wc.getAffectedKeys()) {
            vs.put(k, (IncrementableEntryVersion) context.lookupEntry(k).getVersion());
         }
      }

      // Make sure this version map is attached to the prepare command so that lock owners can perform write skew checks
      command.setVersionsSeen(vs);
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   }

   public static void readVersionsFromResponse(Response r, CacheTransaction ct) {
      if (r != null && r.isSuccessful()) {
         SuccessfulResponse sr = (SuccessfulResponse) r;
         EntryVersionsMap uv = (EntryVersionsMap) sr.getResponseValue();
         if (uv != null) ct.setUpdatedEntryVersions(uv.merge(ct.getUpdatedEntryVersions()));
      }
   }
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   public static EntryVersionsMap performWriteSkewCheckAndReturnNewVersions(VersionedPrepareCommand prepareCommand,
                                                                            DataContainer dataContainer,
                                                                            VersionGenerator versionGenerator,
                                                                            TxInvocationContext context,
                                                                            KeySpecificLogic ksl) {
      EntryVersionsMap uv = new EntryVersionsMap();
      for (WriteCommand c : prepareCommand.getModifications()) {
         for (Object k : c.getAffectedKeys()) {
            if (ksl.performCheckOnKey(k)) {
               ClusteredRepeatableReadEntry entry = (ClusteredRepeatableReadEntry) context.lookupEntry(k);

               if (!context.isOriginLocal()) {
                  // What version did the transaction originator see??
                  EntryVersion versionSeen = prepareCommand.getVersionsSeen().get(k);
                  if (versionSeen != null) entry.setVersion(versionSeen);
               }

               if (entry.performWriteSkewCheck(dataContainer)) {
                  IncrementableEntryVersion newVersion = entry.isCreated() ? versionGenerator.generateNew() : versionGenerator.increment((IncrementableEntryVersion) entry.getVersion());
                  uv.put(k, newVersion);
               } else {
                  // Write skew check detected!
                  throw new WriteSkewException("Write skew detected on key " + k + " for transaction " + context.getTransaction());
               }
            }
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* @since 5.1
*/
public class WriteSkewHelper {
   public static void setVersionsSeenOnPrepareCommand(VersionedPrepareCommand command, TxInvocationContext context) {
      // Build a map of keys to versions as they were seen by the transaction originator's transaction context
      EntryVersionsMap vs = new EntryVersionsMap();
      for (WriteCommand wc : command.getModifications()) {
         for (Object k : wc.getAffectedKeys()) {
            vs.put(k, (IncrementableEntryVersion) context.lookupEntry(k).getVersion());
         }
      }

      // Make sure this version map is attached to the prepare command so that lock owners can perform write skew checks
      command.setVersionsSeen(vs);
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   }

   public static void readVersionsFromResponse(Response r, CacheTransaction ct) {
      if (r != null && r.isSuccessful()) {
         SuccessfulResponse sr = (SuccessfulResponse) r;
         EntryVersionsMap uv = (EntryVersionsMap) sr.getResponseValue();
         if (uv != null) ct.setUpdatedEntryVersions(uv.merge(ct.getUpdatedEntryVersions()));
      }
   }
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Related Classes of org.infinispan.container.versioning.EntryVersionsMap

  • org.infinispan.interceptors.CacheStoreInterceptor
  • org.infinispan.interceptors.CacheWriterInterceptor
  • org.infinispan.interceptors.locking.ClusteringDependentLogic$AbstractClusteringDependentLogic
  • org.infinispan.interceptors.locking.ClusteringDependentLogic$AllNodesLogic
  • org.infinispan.interceptors.locking.ClusteringDependentLogic$DistributionLogic
  • org.infinispan.interceptors.locking.ClusteringDependentLogic$InvalidationLogic
  • org.infinispan.interceptors.totalorder.TotalOrderVersionedEntryWrappingInterceptor
  • org.infinispan.interceptors.VersionedDistributionInterceptor
  • org.infinispan.interceptors.VersionedEntryWrappingInterceptor
  • org.infinispan.interceptors.VersionedReplicationInterceptor
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