Examples with ErrorTxn org.apache.zookeeper.txn.ErrorTxn used on opensource projects

Example 1 with ErrorTxn

use of org.apache.zookeeper.txn.ErrorTxn in project zookeeper by apache.

the class LeaderRequestProcessor method processRequest.

@Override
public void processRequest(Request request) throws RequestProcessorException {
    // Check if this is a local session and we are trying to create
    // an ephemeral node, in which case we upgrade the session
    Request upgradeRequest = null;
    try {
        upgradeRequest = lzks.checkUpgradeSession(request);
    } catch (KeeperException ke) {
        if (request.getHdr() != null) {
            LOG.debug("Updating header");
            request.getHdr().setType(OpCode.error);
            request.setTxn(new ErrorTxn(ke.code().intValue()));
        }
        request.setException(ke);
        LOG.info("Error creating upgrade request " + ke.getMessage());
    } catch (IOException ie) {
        LOG.error("Unexpected error in upgrade", ie);
    }
    if (upgradeRequest != null) {
        nextProcessor.processRequest(upgradeRequest);
    }
    nextProcessor.processRequest(request);
}

Example 2 with ErrorTxn

use of org.apache.zookeeper.txn.ErrorTxn in project zookeeper by apache.

the class ObserverRequestProcessor method processRequest.

/**
     * Simply queue the request, which will be processed in FIFO order.
     */
public void processRequest(Request request) {
    if (!finished) {
        Request upgradeRequest = null;
        try {
            upgradeRequest = zks.checkUpgradeSession(request);
        } catch (KeeperException ke) {
            if (request.getHdr() != null) {
                request.getHdr().setType(OpCode.error);
                request.setTxn(new ErrorTxn(ke.code().intValue()));
            }
            request.setException(ke);
            LOG.info("Error creating upgrade request", ke);
        } catch (IOException ie) {
            LOG.error("Unexpected error in upgrade", ie);
        }
        if (upgradeRequest != null) {
            queuedRequests.add(upgradeRequest);
        }
        queuedRequests.add(request);
    }
}

Example 3 with ErrorTxn

use of org.apache.zookeeper.txn.ErrorTxn in project zookeeper by apache.

the class Zab1_0Test method testInitialAcceptedCurrent.

@Test
public void testInitialAcceptedCurrent() throws Exception {
    File tmpDir = File.createTempFile("test", ".dir", testData);
    tmpDir.delete();
    tmpDir.mkdir();
    try {
        FileTxnSnapLog logFactory = new FileTxnSnapLog(tmpDir, tmpDir);
        File version2 = new File(tmpDir, "version-2");
        version2.mkdir();
        logFactory.save(new DataTree(), new ConcurrentHashMap<Long, Integer>());
        long zxid = ZxidUtils.makeZxid(3, 3);
        logFactory.append(new Request(1, 1, ZooDefs.OpCode.error, new TxnHeader(1, 1, zxid, 1, ZooDefs.OpCode.error), new ErrorTxn(1), zxid));
        logFactory.commit();
        ZKDatabase zkDb = new ZKDatabase(logFactory);
        QuorumPeer peer = new QuorumPeer();
        peer.setZKDatabase(zkDb);
        peer.setTxnFactory(logFactory);
        peer.getLastLoggedZxid();
        Assert.assertEquals(3, peer.getAcceptedEpoch());
        Assert.assertEquals(3, peer.getCurrentEpoch());
        Assert.assertEquals(3, Integer.parseInt(readContentsOfFile(new File(version2, QuorumPeer.CURRENT_EPOCH_FILENAME))));
        Assert.assertEquals(3, Integer.parseInt(readContentsOfFile(new File(version2, QuorumPeer.ACCEPTED_EPOCH_FILENAME))));
    } finally {
        TestUtils.deleteFileRecursively(tmpDir);
    }
}

Example 4 with ErrorTxn

use of org.apache.zookeeper.txn.ErrorTxn in project zookeeper by apache.

the class SerializeUtils method deserializeTxn.

public static Record deserializeTxn(byte[] txnBytes, TxnHeader hdr) throws IOException {
    final ByteArrayInputStream bais = new ByteArrayInputStream(txnBytes);
    InputArchive ia = BinaryInputArchive.getArchive(bais);
    hdr.deserialize(ia, "hdr");
    bais.mark(bais.available());
    Record txn = null;
    switch(hdr.getType()) {
        case OpCode.createSession:
            // This isn't really an error txn; it just has the same
            // format. The error represents the timeout
            txn = new CreateSessionTxn();
            break;
        case OpCode.closeSession:
            return null;
        case OpCode.create:
        case OpCode.create2:
            txn = new CreateTxn();
            break;
        case OpCode.createTTL:
            txn = new CreateTTLTxn();
            break;
        case OpCode.createContainer:
            txn = new CreateContainerTxn();
            break;
        case OpCode.delete:
        case OpCode.deleteContainer:
            txn = new DeleteTxn();
            break;
        case OpCode.reconfig:
        case OpCode.setData:
            txn = new SetDataTxn();
            break;
        case OpCode.setACL:
            txn = new SetACLTxn();
            break;
        case OpCode.error:
            txn = new ErrorTxn();
            break;
        case OpCode.multi:
            txn = new MultiTxn();
            break;
        default:
            throw new IOException("Unsupported Txn with type=%d" + hdr.getType());
    }
    if (txn != null) {
        try {
            txn.deserialize(ia, "txn");
        } catch (EOFException e) {
            // perhaps this is a V0 Create
            if (hdr.getType() == OpCode.create) {
                CreateTxn create = (CreateTxn) txn;
                bais.reset();
                CreateTxnV0 createv0 = new CreateTxnV0();
                createv0.deserialize(ia, "txn");
                // cool now make it V1. a -1 parentCVersion will
                // trigger fixup processing in processTxn
                create.setPath(createv0.getPath());
                create.setData(createv0.getData());
                create.setAcl(createv0.getAcl());
                create.setEphemeral(createv0.getEphemeral());
                create.setParentCVersion(-1);
            } else {
                throw e;
            }
        }
    }
    return txn;
}

Example 5 with ErrorTxn

use of org.apache.zookeeper.txn.ErrorTxn in project zookeeper by apache.

the class PrepRequestProcessorTest method testPRequest.

@Test
public void testPRequest() throws Exception {
    pLatch = new CountDownLatch(1);
    processor = new PrepRequestProcessor(zks, new MyRequestProcessor());
    Request foo = new Request(null, 1l, 1, OpCode.create, ByteBuffer.allocate(3), null);
    processor.pRequest(foo);
    Assert.assertEquals("Request should have marshalling error", new ErrorTxn(KeeperException.Code.MARSHALLINGERROR.intValue()), outcome.getTxn());
    Assert.assertTrue("request hasn't been processed in chain", pLatch.await(5, TimeUnit.SECONDS));
}