package org.infinispan.interceptors;
import org.infinispan.context.Flag;
import org.infinispan.metadata.EmbeddedMetadata;
import org.infinispan.metadata.Metadata;
import org.infinispan.commands.FlagAffectedCommand;
import org.infinispan.commands.tx.CommitCommand;
import org.infinispan.commands.tx.PrepareCommand;
import org.infinispan.commands.tx.VersionedCommitCommand;
import org.infinispan.commands.tx.VersionedPrepareCommand;
import org.infinispan.container.entries.CacheEntry;
import org.infinispan.container.versioning.EntryVersion;
import org.infinispan.container.versioning.EntryVersionsMap;
import org.infinispan.container.versioning.VersionGenerator;
import org.infinispan.context.InvocationContext;
import org.infinispan.context.impl.TxInvocationContext;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Interceptor in charge with wrapping entries and add them in caller's context.
*
* @author Mircea Markus
* @since 5.1
*/
public class VersionedEntryWrappingInterceptor extends EntryWrappingInterceptor {
protected VersionGenerator versionGenerator;
private static final Log log = LogFactory.getLog(VersionedEntryWrappingInterceptor.class);
@Override
protected Log getLog() {
return log;
}
@Inject
public void initialize(VersionGenerator versionGenerator) {
this.versionGenerator = versionGenerator;
}
@Override
public Object visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command) throws Throwable {
if (ctx.isOriginLocal()) {
((VersionedPrepareCommand) command).setVersionsSeen(ctx.getCacheTransaction().getVersionsRead());
}
wrapEntriesForPrepare(ctx, command);
EntryVersionsMap newVersionData= null;
if (ctx.isOriginLocal() && !ctx.getCacheTransaction().isFromStateTransfer()) newVersionData = cdl.createNewVersionsAndCheckForWriteSkews(versionGenerator, ctx, (VersionedPrepareCommand) command);
Object retval = invokeNextInterceptor(ctx, command);
if (!ctx.isOriginLocal()) newVersionData = cdl.createNewVersionsAndCheckForWriteSkews(versionGenerator, ctx, (VersionedPrepareCommand) command);
if (command.isOnePhaseCommit()) ctx.getCacheTransaction().setUpdatedEntryVersions(((VersionedPrepareCommand) command).getVersionsSeen());
if (newVersionData != null) retval = newVersionData;
if (command.isOnePhaseCommit()) commitContextEntries(ctx, null, null);
return retval;
}
@Override
public Object visitCommitCommand(TxInvocationContext ctx, CommitCommand command) throws Throwable {
try {
if (ctx.isOriginLocal())
((VersionedCommitCommand) command).setUpdatedVersions(ctx.getCacheTransaction().getUpdatedEntryVersions());
return invokeNextInterceptor(ctx, command);
} finally {
if (!ctx.isOriginLocal())
ctx.getCacheTransaction().setUpdatedEntryVersions(((VersionedCommitCommand) command).getUpdatedVersions());
commitContextEntries(ctx, null, null);
}
}
@Override
protected void commitContextEntry(CacheEntry entry, InvocationContext ctx, FlagAffectedCommand command,
Metadata metadata, Flag stateTransferFlag, boolean l1Invalidation) {
if (ctx.isInTxScope() && stateTransferFlag == null) {
EntryVersion updatedEntryVersion = ((TxInvocationContext) ctx)
.getCacheTransaction().getUpdatedEntryVersions().get(entry.getKey());
Metadata commitMetadata;
if (updatedEntryVersion != null) {
if (metadata == null && entry.getMetadata() == null)
commitMetadata = new EmbeddedMetadata.Builder().version(updatedEntryVersion).build();
else if (metadata != null)
commitMetadata = metadata.builder().version(updatedEntryVersion).build();
else
commitMetadata = entry.getMetadata().builder().version(updatedEntryVersion).build();
} else {
commitMetadata = metadata != null ? metadata : entry.getMetadata();
}
cdl.commitEntry(entry, commitMetadata, command, ctx, null, l1Invalidation);
} else {
// This could be a state transfer call!
cdl.commitEntry(entry, entry.getMetadata(), command, ctx, stateTransferFlag, l1Invalidation);
}
}
}