Examples with CreateRequest org.apache.zookeeper.proto.CreateRequest used on opensource projects

Example 6 with CreateRequest

use of org.apache.zookeeper.proto.CreateRequest in project zookeeper by apache.

the class LeaderSessionTrackerTest method testCreatePersistent.

/**
     * When local session is enabled, leader will allow persistent node
     * to be create for unknown session
     */
@Test
public void testCreatePersistent() throws Exception {
    qu.enableLocalSession(true);
    qu.startAll();
    QuorumPeer leader = qu.getLeaderQuorumPeer();
    ZooKeeper zk = ClientBase.createZKClient(qu.getConnectString(leader));
    CreateRequest createRequest = new CreateRequest("/success", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT.toFlag());
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    BinaryOutputArchive boa = BinaryOutputArchive.getArchive(baos);
    createRequest.serialize(boa, "request");
    ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray());
    // Mimic sessionId generated by follower's local session tracker
    long sid = qu.getFollowerQuorumPeers().get(0).getActiveServer().getServerId();
    long locallSession = (sid << 56) + 1;
    LOG.info("Local session Id: " + Long.toHexString(locallSession));
    Request request = new Request(null, locallSession, 0, OpCode.create, bb, new ArrayList<Id>());
    // Submit request directly to leader
    leader.getActiveServer().submitRequest(request);
    // Make sure that previous request is finished
    zk.create("/ok", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    Stat stat = zk.exists("/success", null);
    Assert.assertTrue("Request from local sesson failed", stat != null);
}

Example 7 with CreateRequest

use of org.apache.zookeeper.proto.CreateRequest in project hbase by apache.

the class ZKUtil method createAndFailSilent.

private static void createAndFailSilent(ZooKeeperWatcher zkw, CreateAndFailSilent cafs) throws KeeperException {
    CreateRequest create = (CreateRequest) toZooKeeperOp(zkw, cafs).toRequestRecord();
    String znode = create.getPath();
    try {
        RecoverableZooKeeper zk = zkw.getRecoverableZooKeeper();
        if (zk.exists(znode, false) == null) {
            zk.create(znode, create.getData(), create.getAcl(), CreateMode.fromFlag(create.getFlags()));
        }
    } catch (KeeperException.NodeExistsException nee) {
    } catch (KeeperException.NoAuthException nee) {
        try {
            if (null == zkw.getRecoverableZooKeeper().exists(znode, false)) {
                // If we failed to create the file and it does not already exist.
                throw (nee);
            }
        } catch (InterruptedException ie) {
            zkw.interruptedException(ie);
        }
    } catch (InterruptedException ie) {
        zkw.interruptedException(ie);
    }
}

Example 8 with CreateRequest

use of org.apache.zookeeper.proto.CreateRequest in project hbase by apache.

the class RecoverableZooKeeper method prepareZKMulti.

/**
   * Convert Iterable of {@link ZKOp} we got into the ZooKeeper.Op
   * instances to actually pass to multi (need to do this in order to appendMetaData).
   */
private Iterable<Op> prepareZKMulti(Iterable<Op> ops) throws UnsupportedOperationException {
    if (ops == null)
        return null;
    List<Op> preparedOps = new LinkedList<>();
    for (Op op : ops) {
        if (op.getType() == ZooDefs.OpCode.create) {
            CreateRequest create = (CreateRequest) op.toRequestRecord();
            preparedOps.add(Op.create(create.getPath(), appendMetaData(create.getData()), create.getAcl(), create.getFlags()));
        } else if (op.getType() == ZooDefs.OpCode.delete) {
            // no need to appendMetaData for delete
            preparedOps.add(op);
        } else if (op.getType() == ZooDefs.OpCode.setData) {
            SetDataRequest setData = (SetDataRequest) op.toRequestRecord();
            preparedOps.add(Op.setData(setData.getPath(), appendMetaData(setData.getData()), setData.getVersion()));
        } else {
            throw new UnsupportedOperationException("Unexpected ZKOp type: " + op.getClass().getName());
        }
    }
    return preparedOps;
}

Example 9 with CreateRequest

use of org.apache.zookeeper.proto.CreateRequest in project zookeeper by apache.

the class PrepRequestProcessor method pRequest2TxnCreate.

private void pRequest2TxnCreate(int type, Request request, Record record, boolean deserialize) throws IOException, KeeperException {
    if (deserialize) {
        ByteBufferInputStream.byteBuffer2Record(request.request, record);
    }
    int flags;
    String path;
    List<ACL> acl;
    byte[] data;
    long ttl;
    if (type == OpCode.createTTL) {
        CreateTTLRequest createTtlRequest = (CreateTTLRequest) record;
        flags = createTtlRequest.getFlags();
        path = createTtlRequest.getPath();
        acl = createTtlRequest.getAcl();
        data = createTtlRequest.getData();
        ttl = createTtlRequest.getTtl();
    } else {
        CreateRequest createRequest = (CreateRequest) record;
        flags = createRequest.getFlags();
        path = createRequest.getPath();
        acl = createRequest.getAcl();
        data = createRequest.getData();
        ttl = 0;
    }
    CreateMode createMode = CreateMode.fromFlag(flags);
    validateCreateRequest(createMode, request);
    String parentPath = validatePathForCreate(path, request.sessionId);
    List<ACL> listACL = fixupACL(path, request.authInfo, acl);
    ChangeRecord parentRecord = getRecordForPath(parentPath);
    checkACL(zks, request.cnxn, parentRecord.acl, ZooDefs.Perms.CREATE, request.authInfo, path, listACL);
    int parentCVersion = parentRecord.stat.getCversion();
    if (createMode.isSequential()) {
        path = path + String.format(Locale.ENGLISH, "%010d", parentCVersion);
    }
    validatePath(path, request.sessionId);
    try {
        if (getRecordForPath(path) != null) {
            throw new KeeperException.NodeExistsException(path);
        }
    } catch (KeeperException.NoNodeException e) {
    // ignore this one
    }
    boolean ephemeralParent = EphemeralType.get(parentRecord.stat.getEphemeralOwner()) == EphemeralType.NORMAL;
    if (ephemeralParent) {
        throw new KeeperException.NoChildrenForEphemeralsException(path);
    }
    int newCversion = parentRecord.stat.getCversion() + 1;
    if (type == OpCode.createContainer) {
        request.setTxn(new CreateContainerTxn(path, data, listACL, newCversion));
    } else if (type == OpCode.createTTL) {
        request.setTxn(new CreateTTLTxn(path, data, listACL, newCversion, ttl));
    } else {
        request.setTxn(new CreateTxn(path, data, listACL, createMode.isEphemeral(), newCversion));
    }
    StatPersisted s = new StatPersisted();
    if (createMode.isEphemeral()) {
        s.setEphemeralOwner(request.sessionId);
    }
    parentRecord = parentRecord.duplicate(request.getHdr().getZxid());
    parentRecord.childCount++;
    parentRecord.stat.setCversion(newCversion);
    addChangeRecord(parentRecord);
    addChangeRecord(new ChangeRecord(request.getHdr().getZxid(), path, s, 0, listACL));
}

Example 10 with CreateRequest

use of org.apache.zookeeper.proto.CreateRequest in project zookeeper by apache.

the class PrepRequestProcessor method pRequest.

/**
     * This method will be called inside the ProcessRequestThread, which is a
     * singleton, so there will be a single thread calling this code.
     *
     * @param request
     */
protected void pRequest(Request request) throws RequestProcessorException {
    // LOG.info("Prep>>> cxid = " + request.cxid + " type = " +
    // request.type + " id = 0x" + Long.toHexString(request.sessionId));
    request.setHdr(null);
    request.setTxn(null);
    try {
        switch(request.type) {
            case OpCode.createContainer:
            case OpCode.create:
            case OpCode.create2:
                CreateRequest create2Request = new CreateRequest();
                pRequest2Txn(request.type, zks.getNextZxid(), request, create2Request, true);
                break;
            case OpCode.createTTL:
                CreateTTLRequest createTtlRequest = new CreateTTLRequest();
                pRequest2Txn(request.type, zks.getNextZxid(), request, createTtlRequest, true);
                break;
            case OpCode.deleteContainer:
            case OpCode.delete:
                DeleteRequest deleteRequest = new DeleteRequest();
                pRequest2Txn(request.type, zks.getNextZxid(), request, deleteRequest, true);
                break;
            case OpCode.setData:
                SetDataRequest setDataRequest = new SetDataRequest();
                pRequest2Txn(request.type, zks.getNextZxid(), request, setDataRequest, true);
                break;
            case OpCode.reconfig:
                ReconfigRequest reconfigRequest = new ReconfigRequest();
                ByteBufferInputStream.byteBuffer2Record(request.request, reconfigRequest);
                pRequest2Txn(request.type, zks.getNextZxid(), request, reconfigRequest, true);
                break;
            case OpCode.setACL:
                SetACLRequest setAclRequest = new SetACLRequest();
                pRequest2Txn(request.type, zks.getNextZxid(), request, setAclRequest, true);
                break;
            case OpCode.check:
                CheckVersionRequest checkRequest = new CheckVersionRequest();
                pRequest2Txn(request.type, zks.getNextZxid(), request, checkRequest, true);
                break;
            case OpCode.multi:
                MultiTransactionRecord multiRequest = new MultiTransactionRecord();
                try {
                    ByteBufferInputStream.byteBuffer2Record(request.request, multiRequest);
                } catch (IOException e) {
                    request.setHdr(new TxnHeader(request.sessionId, request.cxid, zks.getNextZxid(), Time.currentWallTime(), OpCode.multi));
                    throw e;
                }
                List<Txn> txns = new ArrayList<Txn>();
                //Each op in a multi-op must have the same zxid!
                long zxid = zks.getNextZxid();
                KeeperException ke = null;
                //Store off current pending change records in case we need to rollback
                Map<String, ChangeRecord> pendingChanges = getPendingChanges(multiRequest);
                for (Op op : multiRequest) {
                    Record subrequest = op.toRequestRecord();
                    int type;
                    Record txn;
                    /* If we've already failed one of the ops, don't bother
                     * trying the rest as we know it's going to fail and it
                     * would be confusing in the logfiles.
                     */
                    if (ke != null) {
                        type = OpCode.error;
                        txn = new ErrorTxn(Code.RUNTIMEINCONSISTENCY.intValue());
                    } else /* Prep the request and convert to a Txn */
                    {
                        try {
                            pRequest2Txn(op.getType(), zxid, request, subrequest, false);
                            type = request.getHdr().getType();
                            txn = request.getTxn();
                        } catch (KeeperException e) {
                            ke = e;
                            type = OpCode.error;
                            txn = new ErrorTxn(e.code().intValue());
                            LOG.info("Got user-level KeeperException when processing " + request.toString() + " aborting remaining multi ops." + " Error Path:" + e.getPath() + " Error:" + e.getMessage());
                            request.setException(e);
                            /* Rollback change records from failed multi-op */
                            rollbackPendingChanges(zxid, pendingChanges);
                        }
                    }
                    //FIXME: I don't want to have to serialize it here and then
                    //       immediately deserialize in next processor. But I'm
                    //       not sure how else to get the txn stored into our list.
                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    BinaryOutputArchive boa = BinaryOutputArchive.getArchive(baos);
                    txn.serialize(boa, "request");
                    ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray());
                    txns.add(new Txn(type, bb.array()));
                }
                request.setHdr(new TxnHeader(request.sessionId, request.cxid, zxid, Time.currentWallTime(), request.type));
                request.setTxn(new MultiTxn(txns));
                break;
            //create/close session don't require request record
            case OpCode.createSession:
            case OpCode.closeSession:
                if (!request.isLocalSession()) {
                    pRequest2Txn(request.type, zks.getNextZxid(), request, null, true);
                }
                break;
            //All the rest don't need to create a Txn - just verify session
            case OpCode.sync:
            case OpCode.exists:
            case OpCode.getData:
            case OpCode.getACL:
            case OpCode.getChildren:
            case OpCode.getChildren2:
            case OpCode.ping:
            case OpCode.setWatches:
            case OpCode.checkWatches:
            case OpCode.removeWatches:
                zks.sessionTracker.checkSession(request.sessionId, request.getOwner());
                break;
            default:
                LOG.warn("unknown type " + request.type);
                break;
        }
    } catch (KeeperException e) {
        if (request.getHdr() != null) {
            request.getHdr().setType(OpCode.error);
            request.setTxn(new ErrorTxn(e.code().intValue()));
        }
        LOG.info("Got user-level KeeperException when processing " + request.toString() + " Error Path:" + e.getPath() + " Error:" + e.getMessage());
        request.setException(e);
    } catch (Exception e) {
        // log at error level as we are returning a marshalling
        // error to the user
        LOG.error("Failed to process " + request, e);
        StringBuilder sb = new StringBuilder();
        ByteBuffer bb = request.request;
        if (bb != null) {
            bb.rewind();
            while (bb.hasRemaining()) {
                sb.append(Integer.toHexString(bb.get() & 0xff));
            }
        } else {
            sb.append("request buffer is null");
        }
        LOG.error("Dumping request buffer: 0x" + sb.toString());
        if (request.getHdr() != null) {
            request.getHdr().setType(OpCode.error);
            request.setTxn(new ErrorTxn(Code.MARSHALLINGERROR.intValue()));
        }
    }
    request.zxid = zks.getZxid();
    nextProcessor.processRequest(request);
}