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

Example 6 with SetDataRequest

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

the class ToStringTest method testJuteToString.

/** Verify jute - which we've had particular problems with in the past 
     * wrt null fields */
@Test
public void testJuteToString() {
    SetDataRequest req = new SetDataRequest(null, null, 0);
    Assert.assertNotSame("ERROR", req.toString());
}

Example 7 with SetDataRequest

use of org.apache.zookeeper.proto.SetDataRequest 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);
}

Example 8 with SetDataRequest

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

the class ZooKeeper method setData.

/**
     * The asynchronous version of setData.
     *
     * @see #setData(String, byte[], int)
     */
public void setData(final String path, byte[] data, int version, StatCallback cb, Object ctx) {
    final String clientPath = path;
    PathUtils.validatePath(clientPath);
    final String serverPath = prependChroot(clientPath);
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.setData);
    SetDataRequest request = new SetDataRequest();
    request.setPath(serverPath);
    request.setData(data);
    request.setVersion(version);
    SetDataResponse response = new SetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb, clientPath, serverPath, ctx, null);
}

Example 9 with SetDataRequest

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

the class ZooKeeper method setData.

/**
     * Set the data for the node of the given path if such a node exists and the
     * given version matches the version of the node (if the given version is
     * -1, it matches any node's versions). Return the stat of the node.
     * <p>
     * This operation, if successful, will trigger all the watches on the node
     * of the given path left by getData calls.
     * <p>
     * A KeeperException with error code KeeperException.NoNode will be thrown
     * if no node with the given path exists.
     * <p>
     * A KeeperException with error code KeeperException.BadVersion will be
     * thrown if the given version does not match the node's version.
     * <p>
     * The maximum allowable size of the data array is 1 MB (1,048,576 bytes).
     * Arrays larger than this will cause a KeeperException to be thrown.
     *
     * @param path
     *                the path of the node
     * @param data
     *                the data to set
     * @param version
     *                the expected matching version
     * @return the state of the node
     * @throws InterruptedException If the server transaction is interrupted.
     * @throws KeeperException If the server signals an error with a non-zero error code.
     * @throws IllegalArgumentException if an invalid path is specified
     */
public Stat setData(final String path, byte[] data, int version) throws KeeperException, InterruptedException {
    final String clientPath = path;
    PathUtils.validatePath(clientPath);
    final String serverPath = prependChroot(clientPath);
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.setData);
    SetDataRequest request = new SetDataRequest();
    request.setPath(serverPath);
    request.setData(data);
    request.setVersion(version);
    SetDataResponse response = new SetDataResponse();
    ReplyHeader r = cnxn.submitRequest(h, request, response, null);
    if (r.getErr() != 0) {
        throw KeeperException.create(KeeperException.Code.get(r.getErr()), clientPath);
    }
    return response.getStat();
}