Examples with XaDataSource org.neo4j.kernel.impl.transaction.xaframework.XaDataSource used on opensource projects

Example 21 with XaDataSource

use of org.neo4j.kernel.impl.transaction.xaframework.XaDataSource in project graphdb by neo4j-attic.

the class MasterImpl method commitSingleResourceTransaction.

public Response<Long> commitSingleResourceTransaction(SlaveContext context, String resource, TxExtractor txGetter) {
    Transaction otherTx = suspendOtherAndResumeThis(context);
    try {
        XaDataSource dataSource = graphDbConfig.getTxModule().getXaDataSourceManager().getXaDataSource(resource);
        final long txId = dataSource.applyPreparedTransaction(txGetter.extract());
        Predicate<Long> notThisTx = new Predicate<Long>() {

            public boolean accept(Long item) {
                return item != txId;
            }
        };
        return packResponse(context, txId, notThisTx);
    } catch (IOException e) {
        e.printStackTrace();
        return new FailedResponse<Long>();
    } finally {
        suspendThisAndResumeOther(otherTx, context);
    }
}

Example 22 with XaDataSource

use of org.neo4j.kernel.impl.transaction.xaframework.XaDataSource in project graphdb by neo4j-attic.

the class MasterImpl method makeSureThereIsAtLeastOneKernelTx.

private SlaveContext makeSureThereIsAtLeastOneKernelTx(SlaveContext context) {
    Collection<Pair<String, Long>> txs = new ArrayList<Pair<String, Long>>();
    for (Pair<String, Long> txEntry : context.lastAppliedTransactions()) {
        String resourceName = txEntry.first();
        XaDataSource dataSource = graphDbConfig.getTxModule().getXaDataSourceManager().getXaDataSource(resourceName);
        if (dataSource instanceof NeoStoreXaDataSource) {
            if (txEntry.other() == 1 || txEntry.other() < dataSource.getLastCommittedTxId()) {
                // copying
                return context;
            }
            // Put back slave one tx so that it gets one transaction
            txs.add(Pair.of(resourceName, dataSource.getLastCommittedTxId() - 1));
        //                System.out.println( "Pushed in one extra tx " + dataSource.getLastCommittedTxId() );
        } else {
            txs.add(Pair.of(resourceName, dataSource.getLastCommittedTxId()));
        }
    }
    return new SlaveContext(context.machineId(), context.getEventIdentifier(), txs.toArray(new Pair[0]));
}