Examples with Record org.apache.jute_voltpatches.Record used on opensource projects

Example 1 with Record

use of org.apache.jute_voltpatches.Record in project voltdb by VoltDB.

the class ZooKeeperServer method prepRequest.

/**
     * This method will be called inside the ProcessRequestThread, which is a
     * singleton, so there will be a single thread calling this code.
     *
     * @param request
     */
public void prepRequest(Request request, long txnId) {
    // LOG.info("Prep>>> cxid = " + request.cxid + " type = " +
    // request.type + " id = 0x" + Long.toHexString(request.sessionId));
    TxnHeader txnHeader = null;
    Record txn = null;
    try {
        switch(request.type) {
            case OpCode.create:
                txnHeader = new TxnHeader(request.sessionId, request.cxid, txnId, getTime(), OpCode.create);
                CreateRequest createRequest = new CreateRequest();
                ZooKeeperServer.byteBuffer2Record(request.request, createRequest);
                String path = createRequest.getPath();
                int lastSlash = path.lastIndexOf('/');
                if (lastSlash == -1 || path.indexOf('\0') != -1) {
                    LOG.info("Invalid path " + path + " with session 0x" + Long.toHexString(request.sessionId));
                    throw new KeeperException.BadArgumentsException(path);
                }
                if (!fixupACL(request.authInfo, createRequest.getAcl())) {
                    throw new KeeperException.InvalidACLException(path);
                }
                String parentPath = path.substring(0, lastSlash);
                ChangeRecord parentRecord = getRecordForPath(parentPath);
                checkACL(parentRecord.acl, ZooDefs.Perms.CREATE, request.authInfo);
                int parentCVersion = parentRecord.stat.getCversion();
                CreateMode createMode = CreateMode.fromFlag(createRequest.getFlags());
                if (createMode.isSequential()) {
                    path = path + String.format("%010d", parentCVersion);
                }
                try {
                    PathUtils.validatePath(path);
                } catch (IllegalArgumentException ie) {
                    LOG.info("Invalid path " + path + " with session 0x" + Long.toHexString(request.sessionId));
                    throw new KeeperException.BadArgumentsException(path);
                }
                try {
                    if (getRecordForPath(path) != null) {
                        throw new KeeperException.NodeExistsException(path);
                    }
                } catch (KeeperException.NoNodeException e) {
                // ignore this one
                }
                boolean ephemeralParent = parentRecord.stat.getEphemeralOwner() != 0;
                if (ephemeralParent) {
                    throw new KeeperException.NoChildrenForEphemeralsException(path);
                }
                txn = new CreateTxn(path, createRequest.getData(), createRequest.getAcl(), createMode.isEphemeral());
                StatPersisted s = new StatPersisted();
                if (createMode.isEphemeral()) {
                    s.setEphemeralOwner(request.sessionId);
                }
                parentRecord = parentRecord.duplicate(txnHeader.getZxid());
                parentRecord.childCount++;
                parentRecord.stat.setCversion(parentRecord.stat.getCversion() + 1);
                addChangeRecord(parentRecord);
                addChangeRecord(new ChangeRecord(txnHeader.getZxid(), path, s, 0, createRequest.getAcl()));
                break;
            case OpCode.delete:
                txnHeader = new TxnHeader(request.sessionId, request.cxid, txnId, getTime(), OpCode.delete);
                DeleteRequest deleteRequest = new DeleteRequest();
                ZooKeeperServer.byteBuffer2Record(request.request, deleteRequest);
                path = deleteRequest.getPath();
                lastSlash = path.lastIndexOf('/');
                if (lastSlash == -1 || path.indexOf('\0') != -1 || getZKDatabase().isSpecialPath(path)) {
                    throw new KeeperException.BadArgumentsException(path);
                }
                parentPath = path.substring(0, lastSlash);
                parentRecord = getRecordForPath(parentPath);
                ChangeRecord nodeRecord = getRecordForPath(path);
                checkACL(parentRecord.acl, ZooDefs.Perms.DELETE, request.authInfo);
                int version = deleteRequest.getVersion();
                if (version != -1 && nodeRecord.stat.getVersion() != version) {
                    throw new KeeperException.BadVersionException(path);
                }
                if (nodeRecord.childCount > 0) {
                    throw new KeeperException.NotEmptyException(path);
                }
                txn = new DeleteTxn(path);
                parentRecord = parentRecord.duplicate(txnHeader.getZxid());
                parentRecord.childCount--;
                parentRecord.stat.setCversion(parentRecord.stat.getCversion() + 1);
                addChangeRecord(parentRecord);
                addChangeRecord(new ChangeRecord(txnHeader.getZxid(), path, null, -1, null));
                break;
            case OpCode.setData:
                txnHeader = new TxnHeader(request.sessionId, request.cxid, txnId, getTime(), OpCode.setData);
                SetDataRequest setDataRequest = new SetDataRequest();
                ZooKeeperServer.byteBuffer2Record(request.request, setDataRequest);
                path = setDataRequest.getPath();
                nodeRecord = getRecordForPath(path);
                checkACL(nodeRecord.acl, ZooDefs.Perms.WRITE, request.authInfo);
                version = setDataRequest.getVersion();
                int currentVersion = nodeRecord.stat.getVersion();
                if (version != -1 && version != currentVersion) {
                    throw new KeeperException.BadVersionException(path);
                }
                version = currentVersion + 1;
                txn = new SetDataTxn(path, setDataRequest.getData(), version);
                nodeRecord = nodeRecord.duplicate(txnHeader.getZxid());
                nodeRecord.stat.setVersion(version);
                addChangeRecord(nodeRecord);
                break;
            case OpCode.setACL:
                txnHeader = new TxnHeader(request.sessionId, request.cxid, txnId, getTime(), OpCode.setACL);
                SetACLRequest setAclRequest = new SetACLRequest();
                ZooKeeperServer.byteBuffer2Record(request.request, setAclRequest);
                path = setAclRequest.getPath();
                if (!fixupACL(request.authInfo, setAclRequest.getAcl())) {
                    throw new KeeperException.InvalidACLException(path);
                }
                nodeRecord = getRecordForPath(path);
                checkACL(nodeRecord.acl, ZooDefs.Perms.ADMIN, request.authInfo);
                version = setAclRequest.getVersion();
                currentVersion = nodeRecord.stat.getAversion();
                if (version != -1 && version != currentVersion) {
                    throw new KeeperException.BadVersionException(path);
                }
                version = currentVersion + 1;
                txn = new SetACLTxn(path, setAclRequest.getAcl(), version);
                nodeRecord = nodeRecord.duplicate(txnHeader.getZxid());
                nodeRecord.stat.setAversion(version);
                addChangeRecord(nodeRecord);
                break;
            case OpCode.createSession:
                txnHeader = new TxnHeader(request.sessionId, request.cxid, txnId, getTime(), OpCode.createSession);
                request.request.rewind();
                int to = request.request.getInt();
                txn = new CreateSessionTxn((Long) request.getOwner());
                request.request.rewind();
                sessionTracker.addSession(request.sessionId, (Long) request.getOwner());
                break;
            case OpCode.closeSession:
                txnHeader = new TxnHeader(request.sessionId, request.cxid, txnId, getTime(), OpCode.closeSession);
                // We don't want to do this check since the session expiration
                // thread
                // queues up this operation without being the session owner.
                // this request is the last of the session so it should be ok
                // zks.sessionTracker.checkSession(request.sessionId,
                // request.getOwner());
                HashSet<String> es = getZKDatabase().getEphemerals(request.sessionId);
                synchronized (outstandingChanges) {
                    for (ChangeRecord c : outstandingChanges) {
                        if (c.stat == null) {
                            // Doing a delete
                            es.remove(c.path);
                        } else if (c.stat.getEphemeralOwner() == request.sessionId) {
                            es.add(c.path);
                        }
                    }
                    for (String path2Delete : es) {
                        addChangeRecord(new ChangeRecord(txnHeader.getZxid(), path2Delete, null, 0, null));
                    }
                }
                sessionTracker.removeSession(request.sessionId);
                LOG.info("Processed session termination for sessionid: 0x" + Long.toHexString(request.sessionId));
                break;
            case OpCode.sync:
            case OpCode.exists:
            case OpCode.getData:
            case OpCode.getACL:
            case OpCode.getChildren:
            case OpCode.getChildren2:
            case OpCode.ping:
            case OpCode.setWatches:
            default:
        }
    } catch (KeeperException e) {
        if (txnHeader != null) {
            txnHeader.setType(OpCode.error);
            txn = new ErrorTxn(e.code().intValue());
        }
        LOG.debug("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 (txnHeader != null) {
            txnHeader.setType(OpCode.error);
            txn = new ErrorTxn(Code.MARSHALLINGERROR.intValue());
        }
    }
    request.hdr = txnHeader;
    request.txn = txn;
    request.zxid = txnId;
    executeRequest(request);
}

Example 2 with Record

use of org.apache.jute_voltpatches.Record in project voltdb by VoltDB.

the class SerializeUtils method deserializeTxn.

public static Record deserializeTxn(InputArchive ia, TxnHeader hdr) throws IOException {
    hdr.deserialize(ia, "hdr");
    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:
            txn = new CreateTxn();
            break;
        case OpCode.delete:
            txn = new DeleteTxn();
            break;
        case OpCode.setData:
            txn = new SetDataTxn();
            break;
        case OpCode.setACL:
            txn = new SetACLTxn();
            break;
        case OpCode.error:
            txn = new ErrorTxn();
            break;
    }
    if (txn != null) {
        txn.deserialize(ia, "txn");
    }
    return txn;
}

Example 3 with Record

use of org.apache.jute_voltpatches.Record in project voltdb by VoltDB.

the class ZooKeeperServer method executeRequest.

private void executeRequest(Request request) {
    if (LOG.isDebugEnabled()) {
        LOG.debug("Processing request:: " + request);
    }
    // request.addRQRec(">final");
    long traceMask = ZooTrace.CLIENT_REQUEST_TRACE_MASK;
    if (request.type == OpCode.ping) {
        traceMask = ZooTrace.SERVER_PING_TRACE_MASK;
    }
    if (LOG.isTraceEnabled()) {
        ZooTrace.logRequest(LOG, traceMask, 'E', request, "");
    }
    ProcessTxnResult rc = null;
    synchronized (outstandingChanges) {
        while (!outstandingChanges.isEmpty() && outstandingChanges.get(0).zxid <= request.zxid) {
            ChangeRecord cr = outstandingChanges.remove(0);
            if (cr.zxid < request.zxid) {
                LOG.warn("Zxid outstanding " + cr.zxid + " is less than current " + request.zxid);
            }
            if (outstandingChangesForPath.get(cr.path) == cr) {
                outstandingChangesForPath.remove(cr.path);
            }
        }
        if (request.hdr != null) {
            rc = getZKDatabase().processTxn(request.hdr, request.txn);
        }
    }
    if (request.hdr != null && request.hdr.getType() == OpCode.closeSession) {
        Factory scxn = getServerCnxnFactory();
        // we might just be playing diffs from the leader
        if (scxn != null && request.cnxn == null) {
            // calling this if we have the cnxn results in the client's
            // close session response being lost - we've already closed
            // the session/socket here before we can send the closeSession
            // in the switch block below
            scxn.closeSession(request.sessionId);
            return;
        }
    }
    if (request.cnxn == null) {
        return;
    }
    ServerCnxn cnxn = request.cnxn;
    String lastOp = "NA";
    decInProcess();
    Code err = Code.OK;
    Record rsp = null;
    boolean closeSession = false;
    try {
        if (request.hdr != null && request.hdr.getType() == OpCode.error) {
            throw KeeperException.create(KeeperException.Code.get(((ErrorTxn) request.txn).getErr()));
        }
        KeeperException ke = request.getException();
        if (ke != null) {
            throw ke;
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug(request);
        }
        switch(request.type) {
            case OpCode.ping:
                {
                    serverStats().updateLatency(request.createTime);
                    lastOp = "PING";
                    ((CnxnStats) cnxn.getStats()).updateForResponse(request.cxid, request.zxid, lastOp, request.createTime, System.currentTimeMillis());
                    cnxn.sendResponse(new ReplyHeader(-2, getZKDatabase().getDataTreeLastProcessedZxid(), 0), null, "response");
                    return;
                }
            case OpCode.createSession:
                {
                    serverStats().updateLatency(request.createTime);
                    lastOp = "SESS";
                    ((CnxnStats) cnxn.getStats()).updateForResponse(request.cxid, request.zxid, lastOp, request.createTime, System.currentTimeMillis());
                    cnxn.finishSessionInit(true);
                    return;
                }
            case OpCode.create:
                {
                    lastOp = "CREA";
                    rsp = new CreateResponse(rc.path);
                    err = Code.get(rc.err);
                    break;
                }
            case OpCode.delete:
                {
                    lastOp = "DELE";
                    err = Code.get(rc.err);
                    break;
                }
            case OpCode.setData:
                {
                    lastOp = "SETD";
                    rsp = new SetDataResponse(rc.stat);
                    err = Code.get(rc.err);
                    break;
                }
            case OpCode.setACL:
                {
                    lastOp = "SETA";
                    rsp = new SetACLResponse(rc.stat);
                    err = Code.get(rc.err);
                    break;
                }
            case OpCode.closeSession:
                {
                    lastOp = "CLOS";
                    closeSession = true;
                    err = Code.get(rc.err);
                    break;
                }
            case OpCode.sync:
                {
                    lastOp = "SYNC";
                    SyncRequest syncRequest = new SyncRequest();
                    ZooKeeperServer.byteBuffer2Record(request.request, syncRequest);
                    rsp = new SyncResponse(syncRequest.getPath());
                    break;
                }
            case OpCode.exists:
                {
                    lastOp = "EXIS";
                    // TODO we need to figure out the security requirement for this!
                    ExistsRequest existsRequest = new ExistsRequest();
                    ZooKeeperServer.byteBuffer2Record(request.request, existsRequest);
                    String path = existsRequest.getPath();
                    if (path.indexOf('\0') != -1) {
                        throw new KeeperException.BadArgumentsException();
                    }
                    Stat stat = getZKDatabase().statNode(path, existsRequest.getWatch() ? cnxn : null);
                    rsp = new ExistsResponse(stat);
                    break;
                }
            case OpCode.getData:
                {
                    lastOp = "GETD";
                    GetDataRequest getDataRequest = new GetDataRequest();
                    ZooKeeperServer.byteBuffer2Record(request.request, getDataRequest);
                    DataNode n = getZKDatabase().getNode(getDataRequest.getPath());
                    if (n == null) {
                        throw new KeeperException.NoNodeException();
                    }
                    Long aclL;
                    synchronized (n) {
                        aclL = n.acl;
                    }
                    checkACL(getZKDatabase().convertLong(aclL), ZooDefs.Perms.READ, request.authInfo);
                    Stat stat = new Stat();
                    byte[] b = getZKDatabase().getData(getDataRequest.getPath(), stat, getDataRequest.getWatch() ? cnxn : null);
                    rsp = new GetDataResponse(b, stat);
                    break;
                }
            case OpCode.setWatches:
                {
                    lastOp = "SETW";
                    SetWatches setWatches = new SetWatches();
                    // XXX We really should NOT need this!!!!
                    request.request.rewind();
                    ZooKeeperServer.byteBuffer2Record(request.request, setWatches);
                    long relativeZxid = setWatches.getRelativeZxid();
                    getZKDatabase().setWatches(relativeZxid, setWatches.getDataWatches(), setWatches.getExistWatches(), setWatches.getChildWatches(), cnxn);
                    break;
                }
            case OpCode.getACL:
                {
                    lastOp = "GETA";
                    GetACLRequest getACLRequest = new GetACLRequest();
                    ZooKeeperServer.byteBuffer2Record(request.request, getACLRequest);
                    Stat stat = new Stat();
                    List<ACL> acl = getZKDatabase().getACL(getACLRequest.getPath(), stat);
                    rsp = new GetACLResponse(acl, stat);
                    break;
                }
            case OpCode.getChildren:
                {
                    lastOp = "GETC";
                    GetChildrenRequest getChildrenRequest = new GetChildrenRequest();
                    ZooKeeperServer.byteBuffer2Record(request.request, getChildrenRequest);
                    DataNode n = getZKDatabase().getNode(getChildrenRequest.getPath());
                    if (n == null) {
                        throw new KeeperException.NoNodeException();
                    }
                    Long aclG;
                    synchronized (n) {
                        aclG = n.acl;
                    }
                    checkACL(getZKDatabase().convertLong(aclG), ZooDefs.Perms.READ, request.authInfo);
                    List<String> children = getZKDatabase().getChildren(getChildrenRequest.getPath(), null, getChildrenRequest.getWatch() ? cnxn : null);
                    rsp = new GetChildrenResponse(children);
                    break;
                }
            case OpCode.getChildren2:
                {
                    lastOp = "GETC";
                    GetChildren2Request getChildren2Request = new GetChildren2Request();
                    ZooKeeperServer.byteBuffer2Record(request.request, getChildren2Request);
                    Stat stat = new Stat();
                    DataNode n = getZKDatabase().getNode(getChildren2Request.getPath());
                    if (n == null) {
                        throw new KeeperException.NoNodeException();
                    }
                    Long aclG;
                    synchronized (n) {
                        aclG = n.acl;
                    }
                    checkACL(getZKDatabase().convertLong(aclG), ZooDefs.Perms.READ, request.authInfo);
                    List<String> children = getZKDatabase().getChildren(getChildren2Request.getPath(), stat, getChildren2Request.getWatch() ? cnxn : null);
                    rsp = new GetChildren2Response(children, stat);
                    break;
                }
        }
    } catch (SessionMovedException e) {
        // session moved is a connection level error, we need to tear
        // down the connection otw ZOOKEEPER-710 might happen
        // ie client on slow follower starts to renew session, fails
        // before this completes, then tries the fast follower (leader)
        // and is successful, however the initial renew is then
        // successfully fwd/processed by the leader and as a result
        // the client and leader disagree on where the client is most
        // recently attached (and therefore invalid SESSION MOVED generated)
        cnxn.sendCloseSession();
        return;
    } catch (KeeperException e) {
        err = e.code();
    } 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;
        bb.rewind();
        while (bb.hasRemaining()) {
            sb.append(Integer.toHexString(bb.get() & 0xff));
        }
        LOG.error("Dumping request buffer: 0x" + sb.toString());
        err = Code.MARSHALLINGERROR;
    }
    ReplyHeader hdr = new ReplyHeader(request.cxid, request.zxid, err.intValue());
    serverStats().updateLatency(request.createTime);
    ((CnxnStats) cnxn.getStats()).updateForResponse(request.cxid, request.zxid, lastOp, request.createTime, System.currentTimeMillis());
    try {
        cnxn.sendResponse(hdr, rsp, "response");
        if (closeSession) {
            cnxn.sendCloseSession();
        }
    } catch (IOException e) {
        LOG.error("FIXMSG", e);
    }
}