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

Example 21 with Xid

use of javax.transaction.xa.Xid in project graphdb by neo4j-attic.

the class ReadOnlyTransactionImpl 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 22 with Xid

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

the class TransactionImpl method enlistResource.

public synchronized boolean enlistResource(XAResource xaRes) throws RollbackException, IllegalStateException, SystemException {
    if (xaRes == null) {
        throw new IllegalArgumentException("Null xa resource");
    }
    if (status == Status.STATUS_ACTIVE || status == Status.STATUS_PREPARING) {
        try {
            if (resourceList.size() == 0) {
                if (!globalStartRecordWritten) {
                    txManager.writeStartRecord(globalId);
                    globalStartRecordWritten = true;
                }
                //
                byte[] branchId = txManager.getBranchId(xaRes);
                Xid xid = new XidImpl(globalId, branchId);
                resourceList.add(new ResourceElement(xid, xaRes));
                xaRes.start(xid, XAResource.TMNOFLAGS);
                try {
                    txManager.getTxLog().addBranch(globalId, branchId);
                } catch (IOException e) {
                    log.log(Level.SEVERE, "Error writing transaction log", e);
                    txManager.setTmNotOk(e);
                    throw Exceptions.withCause(new SystemException("TM encountered a problem, " + " error writing transaction log"), e);
                }
                return true;
            }
            Xid sameRmXid = null;
            Iterator<ResourceElement> itr = resourceList.iterator();
            while (itr.hasNext()) {
                ResourceElement re = itr.next();
                if (sameRmXid == null && re.getResource().isSameRM(xaRes)) {
                    sameRmXid = re.getXid();
                }
                if (xaRes == re.getResource()) {
                    if (re.getStatus() == RS_SUSPENDED) {
                        xaRes.start(re.getXid(), XAResource.TMRESUME);
                    } else {
                        // either enlisted or delisted
                        // is TMJOIN correct then?
                        xaRes.start(re.getXid(), XAResource.TMJOIN);
                    }
                    re.setStatus(RS_ENLISTED);
                    return true;
                }
            }
            if (// should we join?
            sameRmXid != null) {
                addResourceToList(sameRmXid, xaRes);
                xaRes.start(sameRmXid, XAResource.TMJOIN);
            } else // new branch
            {
                // ResourceElement re = resourceList.getFirst();
                byte[] branchId = txManager.getBranchId(xaRes);
                Xid xid = new XidImpl(globalId, branchId);
                addResourceToList(xid, xaRes);
                xaRes.start(xid, XAResource.TMNOFLAGS);
                try {
                    txManager.getTxLog().addBranch(globalId, branchId);
                } catch (IOException e) {
                    log.log(Level.SEVERE, "Error writing transaction log", e);
                    txManager.setTmNotOk(e);
                    throw Exceptions.withCause(new SystemException("TM encountered a problem, " + " error writing transaction log"), e);
                }
            }
            return true;
        } catch (XAException e) {
            log.log(Level.SEVERE, "Unable to enlist resource[" + xaRes + "]", e);
            status = Status.STATUS_MARKED_ROLLBACK;
            return false;
        }
    } else if (status == Status.STATUS_ROLLING_BACK || status == Status.STATUS_ROLLEDBACK || status == Status.STATUS_MARKED_ROLLBACK) {
        throw new RollbackException("Tx status is: " + txManager.getTxStatusAsString(status));
    }
    throw new IllegalStateException("Tx status is: " + txManager.getTxStatusAsString(status));
}

Example 23 with Xid

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

the class TxLog method getDanglingRecords.

/**
     * Returns an array of lists, each list contains dangling records
     * (transactions that han't been completed yet) grouped after global by
     * transaction id.
     */
public synchronized Iterator<List<Record>> getDanglingRecords() throws IOException {
    FileChannel fileChannel = logBuffer.getFileChannel();
    ByteBuffer buffer = ByteBuffer.allocateDirect((3 + Xid.MAXGTRIDSIZE + Xid.MAXBQUALSIZE) * 1000);
    fileChannel.position(0);
    buffer.clear();
    fileChannel.read(buffer);
    buffer.flip();
    // next record position
    long nextPosition = 0;
    // holds possible dangling records
    int seqNr = 0;
    Map<Xid, List<Record>> recordMap = new HashMap<Xid, List<Record>>();
    while (buffer.hasRemaining()) {
        byte recordType = buffer.get();
        if (recordType == TX_START) {
            if (!buffer.hasRemaining()) {
                break;
            }
            byte[] globalId = new byte[buffer.get()];
            if (buffer.limit() - buffer.position() < globalId.length) {
                break;
            }
            buffer.get(globalId);
            Xid xid = new XidImpl(globalId, new byte[0]);
            if (recordMap.containsKey(xid)) {
                throw new IOException("Tx start for same xid[" + xid + "] found twice");
            }
            List<Record> recordList = new LinkedList<Record>();
            recordList.add(new Record(recordType, globalId, null, seqNr++));
            recordMap.put(xid, recordList);
            nextPosition += 2 + globalId.length;
        } else if (recordType == BRANCH_ADD) {
            if (buffer.limit() - buffer.position() < 2) {
                break;
            }
            byte[] globalId = new byte[buffer.get()];
            byte[] branchId = new byte[buffer.get()];
            if (buffer.limit() - buffer.position() < globalId.length + branchId.length) {
                break;
            }
            buffer.get(globalId);
            buffer.get(branchId);
            Xid xid = new XidImpl(globalId, new byte[0]);
            if (!recordMap.containsKey(xid)) {
                throw new IOException("Branch[" + UTF8.decode(branchId) + "] found for [" + xid + "] but no record list found in map");
            }
            recordMap.get(xid).add(new Record(recordType, globalId, branchId, seqNr++));
            nextPosition += 3 + globalId.length + branchId.length;
        } else if (recordType == MARK_COMMIT) {
            if (!buffer.hasRemaining()) {
                break;
            }
            byte[] globalId = new byte[buffer.get()];
            if (buffer.limit() - buffer.position() < globalId.length) {
                break;
            }
            buffer.get(globalId);
            Xid xid = new XidImpl(globalId, new byte[0]);
            if (!recordMap.containsKey(xid)) {
                throw new IOException("Commiting xid[" + xid + "] mark found but no record list found in map");
            }
            List<Record> recordList = recordMap.get(xid);
            recordList.add(new Record(recordType, globalId, null, seqNr++));
            recordMap.put(xid, recordList);
            nextPosition += 2 + globalId.length;
        } else if (recordType == TX_DONE) {
            if (!buffer.hasRemaining()) {
                break;
            }
            byte[] globalId = new byte[buffer.get()];
            if (buffer.limit() - buffer.position() < globalId.length) {
                break;
            }
            buffer.get(globalId);
            Xid xid = new XidImpl(globalId, new byte[0]);
            if (!recordMap.containsKey(xid)) {
                throw new IOException("Commiting xid[" + xid + "] mark found but no record list found in map");
            }
            recordMap.remove(xid);
            nextPosition += 2 + globalId.length;
        } else if (recordType == 0) {
            continue;
        } else {
            throw new IOException("Unknown type: " + recordType);
        }
        if ((buffer.limit() - buffer.position()) < (3 + Xid.MAXGTRIDSIZE + Xid.MAXBQUALSIZE)) {
            // make sure we don't try to read non full entry
            buffer.clear();
            fileChannel.position(nextPosition);
            fileChannel.read(buffer);
            buffer.flip();
        }
    }
    return recordMap.values().iterator();
}

Example 24 with Xid

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

the class TxManager method buildRecoveryInfo.

private void buildRecoveryInfo(List<NonCompletedTransaction> commitList, List<Xid> rollbackList, Map<Resource, XAResource> resourceMap, Iterator<List<TxLog.Record>> danglingRecordList) {
    while (danglingRecordList.hasNext()) {
        Iterator<TxLog.Record> dListItr = danglingRecordList.next().iterator();
        TxLog.Record startRecord = dListItr.next();
        if (startRecord.getType() != TxLog.TX_START) {
            throw logAndReturn("TM error building recovery info", new TransactionFailureException("First record not a start record, type=" + startRecord.getType()));
        }
        // get branches & commit status
        HashSet<Resource> branchSet = new HashSet<Resource>();
        int markedCommit = -1;
        while (dListItr.hasNext()) {
            TxLog.Record record = dListItr.next();
            if (record.getType() == TxLog.BRANCH_ADD) {
                if (markedCommit != -1) {
                    throw logAndReturn("TM error building recovery info", new TransactionFailureException("Already marked commit " + startRecord));
                }
                branchSet.add(new Resource(record.getBranchId()));
            } else if (record.getType() == TxLog.MARK_COMMIT) {
                if (markedCommit != -1) {
                    throw logAndReturn("TM error building recovery info", new TransactionFailureException("Already marked commit " + startRecord));
                }
                markedCommit = record.getSequenceNumber();
            } else {
                throw logAndReturn("TM error building recovery info", new TransactionFailureException("Illegal record type[" + record.getType() + "]"));
            }
        }
        Iterator<Resource> resourceItr = branchSet.iterator();
        List<Xid> xids = new LinkedList<Xid>();
        while (resourceItr.hasNext()) {
            Resource resource = resourceItr.next();
            if (!resourceMap.containsKey(resource)) {
                resourceMap.put(resource, getXaResource(resource.getResourceId()));
            }
            xids.add(new XidImpl(startRecord.getGlobalId(), resource.getResourceId()));
        }
        if (// this xid needs to be committed
        markedCommit != -1) {
            commitList.add(new NonCompletedTransaction(markedCommit, xids));
        } else {
            rollbackList.addAll(xids);
        }
    }
}

Example 25 with Xid

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

the class ReadOnlyTransactionImpl 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;
}