public void commit(Xid xid, boolean isOnePhase) throws XAException {
// always call prepare() - even if this is just a 1PC!
if (isOnePhase) prepare(xid);
if (trace) log.trace("committing TransactionXaAdapter: " + globalTx);
try {
LocalTxInvocationContext ctx = icc.createTxInvocationContext();
ctx.setXaCache(this);
if (configuration.isOnePhaseCommit()) {
checkMarkedForRollback();
if (trace) log.trace("Doing an 1PC prepare call on the interceptor chain");
PrepareCommand command = commandsFactory.buildPrepareCommand(globalTx, modifications, true);
try {
invoker.invoke(ctx, command);
} catch (Throwable e) {
log.error("Error while processing 1PC PrepareCommand", e);
throw new XAException(XAException.XAER_RMERR);
}
} else {
CommitCommand commitCommand = commandsFactory.buildCommitCommand(globalTx);
try {
invoker.invoke(ctx, commitCommand);
} catch (Throwable e) {
log.error("Error while processing 1PC PrepareCommand", e);
throw new XAException(XAException.XAER_RMERR);
}
}
} finally {
txTable.removeLocalTransaction(transaction);
this.modifications = null;
}
}
public void rollback(Xid xid) throws XAException {
RollbackCommand rollbackCommand = commandsFactory.buildRollbackCommand(globalTx);
LocalTxInvocationContext ctx = icc.createTxInvocationContext();
ctx.setXaCache(this);
try {
invoker.invoke(ctx, rollbackCommand);
} catch (Throwable e) {
log.error("Exception while rollback", e);
throw new XAException(XAException.XA_HEURHAZ);
} finally {
txTable.removeLocalTransaction(transaction);
this.modifications = null;
}
}
@Override
public Object visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command)
throws Throwable {
Object retVal = invokeNextInterceptor(ctx, command);
boolean sync = isSynchronous(ctx);
if (shouldInvokeRemoteTxCommand(ctx)) {
int newCacheViewId = -1;
stateTransferLock.waitForStateTransferToEnd(ctx, command, newCacheViewId);
if (command.isOnePhaseCommit())
flushL1Caches(ctx); // if we are one-phase, don't block on this future.
Collection<Address> recipients = dm.getAffectedNodes(ctx.getAffectedKeys());
prepareOnAffectedNodes(ctx, command, recipients, sync);
((LocalTxInvocationContext) ctx).remoteLocksAcquired(recipients);
} else if (isL1CacheEnabled
&& command.isOnePhaseCommit()
&& !ctx.isOriginLocal()
&& !ctx.getLockedKeys().isEmpty()) {
// We fall into this block if we are a remote node, happen to be the primary data owner and
// have locked keys.
// it is still our responsibility to invalidate L1 caches in the cluster.
flushL1Caches(ctx);
}
return retVal;
}
@Override
public Object visitLockControlCommand(TxInvocationContext ctx, LockControlCommand command)
throws Throwable {
Object retVal = invokeNextInterceptor(ctx, command);
if (ctx.isOriginLocal()) {
// unlock will happen async as it is a best effort
boolean sync = !command.isUnlock();
((LocalTxInvocationContext) ctx).remoteLocksAcquired(rpcManager.getTransport().getMembers());
rpcManager.invokeRemotely(null, command, rpcManager.getDefaultRpcOptions(sync));
}
return retVal;
}
@Override
public Object visitLockControlCommand(TxInvocationContext ctx, LockControlCommand command)
throws Throwable {
if (ctx.isOriginLocal()) {
int newCacheViewId = -1;
stateTransferLock.waitForStateTransferToEnd(ctx, command, newCacheViewId);
final Collection<Address> affectedNodes = dm.getAffectedNodes(command.getKeys());
((LocalTxInvocationContext) ctx).remoteLocksAcquired(affectedNodes);
rpcManager.invokeRemotely(affectedNodes, command, true, true);
}
return invokeNextInterceptor(ctx, command);
}
public int prepare(Xid xid) throws XAException {
checkMarkedForRollback();
if (configuration.isOnePhaseCommit()) {
if (trace)
log.trace("Received prepare for tx: " + xid + " . Skipping call as 1PC will be used.");
return XA_OK;
}
PrepareCommand prepareCommand =
commandsFactory.buildPrepareCommand(
globalTx, modifications, configuration.isOnePhaseCommit());
if (trace) log.trace("Sending prepare command through the chain: " + prepareCommand);
LocalTxInvocationContext ctx = icc.createTxInvocationContext();
ctx.setXaCache(this);
try {
invoker.invoke(ctx, prepareCommand);
return XA_OK;
} catch (Throwable e) {
log.error("Error while processing PrepareCommand", e);
throw new XAException(XAException.XAER_RMERR);
}
}
Map<Integer, Set<K>> contextToMap(LocalTxInvocationContext ctx, ConsistentHash hash) {
Map<Integer, Set<K>> contextMap = new HashMap<>();
ctx.getLookedUpEntries()
.forEach(
(k, v) -> {
Integer segment = hash.getSegment(k);
Set<K> innerSet = contextMap.get(segment);
if (innerSet == null) {
innerSet = new HashSet<K>();
contextMap.put(segment, innerSet);
}
innerSet.add((K) k);
});
return contextMap;
}