Examples with VersionedPrepareCommand org.infinispan.commands.tx.VersionedPrepareCommand used on opensource projects

Example 1 with VersionedPrepareCommand

use of org.infinispan.commands.tx.VersionedPrepareCommand in project infinispan by infinispan.

the class WriteSkewHelper method performWriteSkewCheckAndReturnNewVersions.

public static CompletionStage<Map<Object, IncrementableEntryVersion>> performWriteSkewCheckAndReturnNewVersions(VersionedPrepareCommand prepareCommand, EntryLoader<?, ?> entryLoader, VersionGenerator versionGenerator, TxInvocationContext<?> context, KeySpecificLogic ksl, KeyPartitioner keyPartitioner) {
    if (prepareCommand.getVersionsSeen() == null) {
        // Do not perform the write skew check if this prepare command is being replayed for state transfer
        return CompletableFutures.completedEmptyMap();
    }
    Map<Object, IncrementableEntryVersion> uv = new HashMap<>();
    AggregateCompletionStage<Map<Object, IncrementableEntryVersion>> aggregateCompletionStage = CompletionStages.aggregateCompletionStage(uv);
    for (WriteCommand c : prepareCommand.getModifications()) {
        for (Object k : c.getAffectedKeys()) {
            int segment = SegmentSpecificCommand.extractSegment(c, k, keyPartitioner);
            if (ksl.performCheckOnSegment(segment)) {
                CacheEntry<?, ?> cacheEntry = context.lookupEntry(k);
                if (!(cacheEntry instanceof VersionedRepeatableReadEntry)) {
                    continue;
                }
                VersionedRepeatableReadEntry entry = (VersionedRepeatableReadEntry) cacheEntry;
                CompletionStage<Boolean> skewStage = entry.performWriteSkewCheck(entryLoader, segment, context, prepareCommand.getVersionsSeen().get(k), versionGenerator, c.hasAnyFlag(FlagBitSets.ROLLING_UPGRADE));
                aggregateCompletionStage.dependsOn(skewStage.thenAccept(passSkew -> {
                    if (!passSkew) {
                        throw new WriteSkewException("Write skew detected on key " + entry.getKey() + " for transaction " + context.getCacheTransaction(), entry.getKey());
                    }
                    IncrementableEntryVersion newVersion = incrementVersion(entry, versionGenerator);
                    // Have to synchronize as we could have returns on different threads due to notifications/loaders etc
                    synchronized (uv) {
                        uv.put(entry.getKey(), newVersion);
                    }
                }));
            }
        }
    }
    return aggregateCompletionStage.freeze();
}

Example 2 with VersionedPrepareCommand

use of org.infinispan.commands.tx.VersionedPrepareCommand in project infinispan by infinispan.

the class VersionedEntryWrappingInterceptor method prepareHandler.

private Object prepareHandler(InvocationContext nonTxCtx, VersionedPrepareCommand command, Object nil) {
    TxInvocationContext<?> ctx = (TxInvocationContext<?>) nonTxCtx;
    CompletionStage<Map<Object, IncrementableEntryVersion>> originVersionData;
    if (ctx.getCacheTransaction().isFromStateTransfer()) {
        storeEntryVersionForStateTransfer(ctx);
        originVersionData = CompletableFutures.completedNull();
    } else if (ctx.isOriginLocal()) {
        originVersionData = checkWriteSkew(ctx, command);
    } else {
        originVersionData = CompletableFutures.completedNull();
    }
    InvocationStage originVersionStage = makeStage(asyncInvokeNext(ctx, command, originVersionData));
    InvocationStage newVersionStage = originVersionStage.thenApplyMakeStage(ctx, command, (rCtx, rCommand, rv) -> {
        CompletionStage<Map<Object, IncrementableEntryVersion>> stage = rCtx.isOriginLocal() ? originVersionData : checkWriteSkew((TxInvocationContext<?>) rCtx, rCommand);
        return asyncValue(stage.thenApply(vMap -> mergeInPrepareResponse(vMap, asPrepareResponse(rv))));
    });
    return newVersionStage.thenApply(ctx, command, afterPrepareHandler);
}