Examples with Xid javax.transaction.xa.Xid used on opensource projects

Example 66 with Xid

use of javax.transaction.xa.Xid in project neo4j-mobile-android by neo4j-contrib.

the class LogIoUtils method readTxStartEntry.

private static LogEntry.Start readTxStartEntry(ByteBuffer buf, ReadableByteChannel channel) throws IOException, ReadPastEndException {
    byte globalIdLength = readNextByte(buf, channel);
    byte branchIdLength = readNextByte(buf, channel);
    byte[] globalId = new byte[globalIdLength];
    readIntoBufferAndFlip(ByteBuffer.wrap(globalId), channel, globalIdLength);
    byte[] branchId = new byte[branchIdLength];
    readIntoBufferAndFlip(ByteBuffer.wrap(branchId), channel, branchIdLength);
    int identifier = readNextInt(buf, channel);
    int formatId = readNextInt(buf, channel);
    // re-create the transaction
    Xid xid = new XidImpl(globalId, branchId, formatId);
    return new LogEntry.Start(xid, identifier, -1);
}

Example 67 with Xid

use of javax.transaction.xa.Xid in project neo4j-mobile-android by neo4j-contrib.

the class XaLogicalLog method applyDoneEntry.

private void applyDoneEntry(LogEntry.Done done) throws IOException {
    // get the tx identifier
    int identifier = done.getIdentifier();
    LogEntry.Start entry = xidIdentMap.get(identifier);
    if (entry == null) {
        throw new IOException("Unknown xid for identifier " + identifier);
    }
    Xid xid = entry.getXid();
    xaRm.pruneXid(xid);
    xidIdentMap.remove(identifier);
    recoveredTxMap.remove(identifier);
}

Example 68 with Xid

use of javax.transaction.xa.Xid in project neo4j-mobile-android by neo4j-contrib.

the class XaLogicalLog method applyStartEntry.

private void applyStartEntry(LogEntry.Start entry) throws IOException {
    int identifier = entry.getIdentifier();
    if (identifier >= nextIdentifier) {
        nextIdentifier = (identifier + 1);
    }
    // re-create the transaction
    Xid xid = entry.getXid();
    xidIdentMap.put(identifier, entry);
    XaTransaction xaTx = xaTf.create(identifier);
    xaTx.setRecovered();
    recoveredTxMap.put(identifier, xaTx);
    xaRm.injectStart(xid, xaTx);
// force to make sure done record is there if 2PC tx and global log
// marks tx as committed
// fileChannel.force( false );
}

Example 69 with Xid

use of javax.transaction.xa.Xid in project neo4j-mobile-android by neo4j-contrib.

the class TransactionImpl method isOnePhase.

private boolean isOnePhase() {
    if (resourceList.size() == 0) {
        log.severe("Detected zero resources in resourceList");
        return true;
    }
    // check for more than one unique xid
    Iterator<ResourceElement> itr = resourceList.iterator();
    Xid xid = itr.next().getXid();
    while (itr.hasNext()) {
        if (!xid.equals(itr.next().getXid())) {
            return false;
        }
    }
    return true;
}

Example 70 with Xid

use of javax.transaction.xa.Xid in project neo4j-mobile-android by neo4j-contrib.

the class TxManager method recover.

private void recover(Iterator<List<TxLog.Record>> danglingRecordList) {
    msgLog.logMessage("TM non resolved transactions found in " + txLog.getName(), true);
    try {
        // contains NonCompletedTransaction that needs to be committed
        List<NonCompletedTransaction> commitList = new ArrayList<NonCompletedTransaction>();
        // contains Xids that should be rolledback
        List<Xid> rollbackList = new LinkedList<Xid>();
        // key = Resource(branchId) value = XAResource
        Map<Resource, XAResource> resourceMap = new HashMap<Resource, XAResource>();
        buildRecoveryInfo(commitList, rollbackList, resourceMap, danglingRecordList);
        // invoke recover on all xa resources found
        Iterator<Resource> resourceItr = resourceMap.keySet().iterator();
        List<Xid> recoveredXidsList = new LinkedList<Xid>();
        while (resourceItr.hasNext()) {
            XAResource xaRes = resourceMap.get(resourceItr.next());
            Xid[] xids = xaRes.recover(XAResource.TMNOFLAGS);
            for (int i = 0; i < xids.length; i++) {
                if (XidImpl.isThisTm(xids[i].getGlobalTransactionId())) {
                    // linear search
                    if (rollbackList.contains(xids[i])) {
                        log.fine("Found pre commit " + xids[i] + " rolling back ... ");
                        msgLog.logMessage("TM: Found pre commit " + xids[i] + " rolling back ... ", true);
                        rollbackList.remove(xids[i]);
                        xaRes.rollback(xids[i]);
                    } else {
                        recoveredXidsList.add(xids[i]);
                    }
                } else {
                    log.warning("Unknown xid: " + xids[i]);
                }
            }
        }
        // sort the commit list after sequence number
        Collections.sort(commitList, new Comparator<NonCompletedTransaction>() {

            public int compare(NonCompletedTransaction r1, NonCompletedTransaction r2) {
                return r1.getSequenceNumber() - r2.getSequenceNumber();
            }
        });
        // go through and commit
        Iterator<NonCompletedTransaction> commitItr = commitList.iterator();
        while (commitItr.hasNext()) {
            NonCompletedTransaction nct = commitItr.next();
            int seq = nct.getSequenceNumber();
            Xid[] xids = nct.getXids();
            log.fine("Marked as commit tx-seq[" + seq + "] branch length: " + xids.length);
            for (Xid xid : xids) {
                if (!recoveredXidsList.contains(xid)) {
                    log.fine("Tx-seq[" + seq + "][" + xid + "] not found in recovered xid list, " + "assuming already committed");
                    continue;
                }
                recoveredXidsList.remove(xid);
                Resource resource = new Resource(xid.getBranchQualifier());
                if (!resourceMap.containsKey(resource)) {
                    final TransactionFailureException ex = new TransactionFailureException("Couldn't find XAResource for " + xid);
                    throw logAndReturn("TM: recovery error", ex);
                }
                log.fine("Commiting tx seq[" + seq + "][" + xid + "] ... ");
                msgLog.logMessage("TM: Committing tx " + xid, true);
                resourceMap.get(resource).commit(xid, false);
            }
        }
        // rollback the rest
        Iterator<Xid> rollbackItr = recoveredXidsList.iterator();
        while (rollbackItr.hasNext()) {
            Xid xid = rollbackItr.next();
            Resource resource = new Resource(xid.getBranchQualifier());
            if (!resourceMap.containsKey(resource)) {
                final TransactionFailureException ex = new TransactionFailureException("Couldn't find XAResource for " + xid);
                throw logAndReturn("TM: recovery error", ex);
            }
            log.fine("Rollback " + xid + " ... ");
            msgLog.logMessage("TM: no match found for " + xid + " removing", true);
            resourceMap.get(resource).rollback(xid);
        }
        if (rollbackList.size() > 0) {
            log.fine("TxLog contained unresolved " + "xids that needed rollback. They couldn't be matched to " + "any of the XAResources recover list. " + "Assuming " + rollbackList.size() + " transactions already rolled back.");
            msgLog.logMessage("TM: no match found for in total " + rollbackList.size() + " transaction that should have been rolled back", true);
        }
        // doesn't get lost.
        for (XAResource participant : MapUtil.reverse(resourceMap).keySet()) {
            xaResourceToDataSource(participant).rotateLogicalLog();
        }
    } catch (IOException e) {
        throw logAndReturn("TM: recovery failed", new TransactionFailureException("Recovery failed.", e));
    } catch (XAException e) {
        throw logAndReturn("TM: recovery failed", new TransactionFailureException("Recovery failed.", e));
    }
}