Examples with Uint8Array elemental2.core.Uint8Array used on opensource projects

Example 1 with Uint8Array

use of elemental2.core.Uint8Array in project deephaven-core by deephaven.

the class WorkerConnection method padAndConcat.

private Uint8Array padAndConcat(List<Uint8Array> buffers, int length) {
    Uint8Array all = new Uint8Array(buffers.stream().mapToInt(b -> b.byteLength).sum());
    int currentPosition = 0;
    for (int i = 0; i < buffers.size(); i++) {
        Uint8Array buffer = buffers.get(i);
        all.set(buffer, currentPosition);
        currentPosition += buffer.byteLength;
    }
    assert length == currentPosition;
    return all;
}

Example 2 with Uint8Array

use of elemental2.core.Uint8Array in project deephaven-core by deephaven.

the class WorkerConnection method flush.

private void flush() {
    // LATER: instead of running a bunch of serial operations,
    // condense these all into a single batch operation.
    // All three server calls made by this method are _only_ called by this method,
    // so we can reasonably merge all three into a single batched operation.
    ArrayList<ClientTableState> statesToFlush = new ArrayList<>(flushable);
    flushable.clear();
    for (ClientTableState state : statesToFlush) {
        if (state.hasNoSubscriptions()) {
            // yet completed (we leave orphaned nodes paused until a request completes).
            if (state.isSubscribed()) {
                state.setSubscribed(false);
                if (state.getHandle().isConnected()) {
                    BiDiStream<FlightData, FlightData> stream = subscriptionStreams.remove(state);
                    if (stream != null) {
                        stream.end();
                        stream.cancel();
                    }
                }
            }
            if (state.isEmpty()) {
                // completely empty; perform release
                final ClientTableState.ResolutionState previousState = state.getResolution();
                state.setResolution(ClientTableState.ResolutionState.RELEASED);
                state.setSubscribed(false);
                if (previousState != ClientTableState.ResolutionState.RELEASED) {
                    cache.release(state);
                    JsLog.debug("Releasing state", state, LazyString.of(state.getHandle()));
                    // don't send a release message to the server if the table isn't really there
                    if (state.getHandle().isConnected()) {
                        releaseHandle(state.getHandle());
                    }
                }
            }
        } else {
            List<TableSubscriptionRequest> vps = new ArrayList<>();
            state.forActiveSubscriptions((table, subscription) -> {
                assert table.isActive(state) : "Inactive table has a viewport still attached";
                vps.add(new TableSubscriptionRequest(table.getSubscriptionId(), subscription.getRows(), subscription.getColumns()));
            });
            boolean isViewport = vps.stream().allMatch(req -> req.getRows() != null);
            assert isViewport || vps.stream().noneMatch(req -> req.getRows() != null) : "All subscriptions to a given handle must be consistently viewport or non-viewport";
            BitSet includedColumns = vps.stream().map(TableSubscriptionRequest::getColumns).reduce((bs1, bs2) -> {
                BitSet result = new BitSet();
                result.or(bs1);
                result.or(bs2);
                return result;
            }).orElseThrow(() -> new IllegalStateException("Cannot call subscribe with zero subscriptions"));
            String[] columnTypes = Arrays.stream(state.getTableDef().getColumns()).map(ColumnDefinition::getType).toArray(String[]::new);
            state.setSubscribed(true);
            Builder subscriptionReq = new Builder(1024);
            double columnsOffset = BarrageSubscriptionRequest.createColumnsVector(subscriptionReq, makeUint8ArrayFromBitset(includedColumns));
            double viewportOffset = 0;
            if (isViewport) {
                viewportOffset = BarrageSubscriptionRequest.createViewportVector(subscriptionReq, serializeRanges(vps.stream().map(TableSubscriptionRequest::getRows).collect(Collectors.toSet())));
            }
            // TODO #188 support minUpdateIntervalMs
            double serializationOptionsOffset = BarrageSubscriptionOptions.createBarrageSubscriptionOptions(subscriptionReq, ColumnConversionMode.Stringify, true, 1000, 0);
            double tableTicketOffset = BarrageSubscriptionRequest.createTicketVector(subscriptionReq, state.getHandle().getTicket());
            BarrageSubscriptionRequest.startBarrageSubscriptionRequest(subscriptionReq);
            BarrageSubscriptionRequest.addColumns(subscriptionReq, columnsOffset);
            BarrageSubscriptionRequest.addSubscriptionOptions(subscriptionReq, serializationOptionsOffset);
            BarrageSubscriptionRequest.addViewport(subscriptionReq, viewportOffset);
            BarrageSubscriptionRequest.addTicket(subscriptionReq, tableTicketOffset);
            subscriptionReq.finish(BarrageSubscriptionRequest.endBarrageSubscriptionRequest(subscriptionReq));
            FlightData request = new FlightData();
            request.setAppMetadata(BarrageUtils.wrapMessage(subscriptionReq, BarrageMessageType.BarrageSubscriptionRequest));
            BiDiStream<FlightData, FlightData> stream = this.<FlightData, FlightData>streamFactory().create(headers -> flightServiceClient.doExchange(headers), (first, headers) -> browserFlightServiceClient.openDoExchange(first, headers), (next, headers, c) -> browserFlightServiceClient.nextDoExchange(next, headers, c::apply), new FlightData());
            stream.send(request);
            stream.onData(new JsConsumer<FlightData>() {

                @Override
                public void apply(FlightData data) {
                    ByteBuffer body = typedArrayToLittleEndianByteBuffer(data.getDataBody_asU8());
                    Message headerMessage = Message.getRootAsMessage(new io.deephaven.javascript.proto.dhinternal.flatbuffers.ByteBuffer(data.getDataHeader_asU8()));
                    if (body.limit() == 0 && headerMessage.headerType() != MessageHeader.RecordBatch) {
                        // TODO hang on to the schema to better handle the now-Utf8 columns
                        return;
                    }
                    RecordBatch header = headerMessage.header(new RecordBatch());
                    BarrageMessageWrapper barrageMessageWrapper = BarrageMessageWrapper.getRootAsBarrageMessageWrapper(new io.deephaven.javascript.proto.dhinternal.flatbuffers.ByteBuffer(data.getAppMetadata_asU8()));
                    if (barrageMessageWrapper.msgType() == BarrageMessageType.None) {
                        // continue previous message, just read RecordBatch
                        appendAndMaybeFlush(header, body);
                    } else {
                        assert barrageMessageWrapper.msgType() == BarrageMessageType.BarrageUpdateMetadata;
                        BarrageUpdateMetadata barrageUpdate = BarrageUpdateMetadata.getRootAsBarrageUpdateMetadata(new io.deephaven.javascript.proto.dhinternal.flatbuffers.ByteBuffer(new Uint8Array(barrageMessageWrapper.msgPayloadArray())));
                        startAndMaybeFlush(barrageUpdate.isSnapshot(), header, body, barrageUpdate, isViewport, columnTypes);
                    }
                }

                private DeltaUpdatesBuilder nextDeltaUpdates;

                private void appendAndMaybeFlush(RecordBatch header, ByteBuffer body) {
                    // using existing barrageUpdate, append to the current snapshot/delta
                    assert nextDeltaUpdates != null;
                    boolean shouldFlush = nextDeltaUpdates.appendRecordBatch(header, body);
                    if (shouldFlush) {
                        incrementalUpdates(state.getHandle(), nextDeltaUpdates.build());
                        nextDeltaUpdates = null;
                    }
                }

                private void startAndMaybeFlush(boolean isSnapshot, RecordBatch header, ByteBuffer body, BarrageUpdateMetadata barrageUpdate, boolean isViewport, String[] columnTypes) {
                    if (isSnapshot) {
                        TableSnapshot snapshot = createSnapshot(header, body, barrageUpdate, isViewport, columnTypes);
                        // for now we always expect snapshots to arrive in a single payload
                        initialSnapshot(state.getHandle(), snapshot);
                    } else {
                        nextDeltaUpdates = deltaUpdates(barrageUpdate, isViewport, columnTypes);
                        appendAndMaybeFlush(header, body);
                    }
                }
            });
            stream.onStatus(err -> {
                checkStatus(err);
                if (!err.isOk()) {
                    // TODO (core#1181): fix this hack that enables barrage errors to propagate to the UI widget
                    state.forActiveSubscriptions((table, subscription) -> {
                        table.failureHandled(err.getDetails());
                    });
                }
            });
            BiDiStream<FlightData, FlightData> oldStream = subscriptionStreams.put(state, stream);
            if (oldStream != null) {
                // cancel any old stream, we presently expect a fresh instance
                oldStream.end();
                oldStream.cancel();
            }
        }
    }
}

Example 3 with Uint8Array

use of elemental2.core.Uint8Array in project deephaven-core by deephaven.

the class FilterCondition method equals.

@Override
@JsIgnore
public boolean equals(Object o) {
    if (this == o)
        return true;
    if (o == null || getClass() != o.getClass())
        return false;
    final FilterCondition that = (FilterCondition) o;
    // TODO (deephaven-core#723): implement a reasonable equality method; comparing pb serialization is expensive
    final Uint8Array mBinary = descriptor.serializeBinary();
    final Uint8Array oBinary = that.descriptor.serializeBinary();
    if (mBinary.length != oBinary.length) {
        return false;
    }
    for (int i = 0; i < mBinary.length; ++i) {
        if (!Objects.equals(mBinary.getAt(i), oBinary.getAt(i))) {
            return false;
        }
    }
    return true;
}

Example 4 with Uint8Array

use of elemental2.core.Uint8Array in project deephaven-core by deephaven.

the class ClientConfiguration method newTicketRaw.

public Uint8Array newTicketRaw() {
    if (next == Integer.MAX_VALUE) {
        throw new IllegalStateException("Ran out of tickets!");
    }
    final int exportId = next++;
    final double[] dest = new double[5];
    dest[0] = EXPORT_PREFIX;
    dest[1] = (byte) exportId;
    dest[2] = (byte) (exportId >>> 8);
    dest[3] = (byte) (exportId >>> 16);
    dest[4] = (byte) (exportId >>> 24);
    final Uint8Array bytes = new Uint8Array(5);
    bytes.set(dest);
    return bytes;
}

Example 5 with Uint8Array

use of elemental2.core.Uint8Array in project deephaven-core by deephaven.

the class TableViewportSubscription method snapshot.

@JsMethod
public Promise<TableData> snapshot(JsRangeSet rows, Column[] columns) {
    // TODO #1039 slice rows and drop columns
    return copy.then(table -> {
        final ClientTableState state = table.state();
        String[] columnTypes = Arrays.stream(state.getTableDef().getColumns()).map(ColumnDefinition::getType).toArray(String[]::new);
        final BitSet columnBitset = table.lastVisibleState().makeBitset(columns);
        return Callbacks.<TableSnapshot, String>promise(this, callback -> {
            WorkerConnection connection = table.getConnection();
            BiDiStream<FlightData, FlightData> stream = connection.<FlightData, FlightData>streamFactory().create(headers -> connection.flightServiceClient().doExchange(headers), (first, headers) -> connection.browserFlightServiceClient().openDoExchange(first, headers), (next, headers, c) -> connection.browserFlightServiceClient().nextDoExchange(next, headers, c::apply), new FlightData());
            Builder doGetRequest = new Builder(1024);
            double columnsOffset = BarrageSubscriptionRequest.createColumnsVector(doGetRequest, makeUint8ArrayFromBitset(columnBitset));
            double viewportOffset = BarrageSubscriptionRequest.createViewportVector(doGetRequest, serializeRanges(Collections.singleton(rows.getRange())));
            double serializationOptionsOffset = BarrageSnapshotOptions.createBarrageSnapshotOptions(doGetRequest, ColumnConversionMode.Stringify, true, 0);
            double tableTicketOffset = BarrageSubscriptionRequest.createTicketVector(doGetRequest, state.getHandle().getTicket());
            BarrageSnapshotRequest.startBarrageSnapshotRequest(doGetRequest);
            BarrageSnapshotRequest.addTicket(doGetRequest, tableTicketOffset);
            BarrageSnapshotRequest.addColumns(doGetRequest, columnsOffset);
            BarrageSnapshotRequest.addSnapshotOptions(doGetRequest, serializationOptionsOffset);
            BarrageSnapshotRequest.addViewport(doGetRequest, viewportOffset);
            doGetRequest.finish(BarrageSnapshotRequest.endBarrageSnapshotRequest(doGetRequest));
            FlightData request = new FlightData();
            request.setAppMetadata(BarrageUtils.wrapMessage(doGetRequest, BarrageMessageType.BarrageSnapshotRequest));
            stream.send(request);
            stream.end();
            stream.onData(flightData -> {
                Message message = Message.getRootAsMessage(new ByteBuffer(flightData.getDataHeader_asU8()));
                if (message.headerType() == MessageHeader.Schema) {
                    // ignore for now, we'll handle this later
                    return;
                }
                assert message.headerType() == MessageHeader.RecordBatch;
                RecordBatch header = message.header(new RecordBatch());
                Uint8Array appMetadataBytes = flightData.getAppMetadata_asU8();
                BarrageUpdateMetadata update = null;
                if (appMetadataBytes.length != 0) {
                    BarrageMessageWrapper barrageMessageWrapper = BarrageMessageWrapper.getRootAsBarrageMessageWrapper(new io.deephaven.javascript.proto.dhinternal.flatbuffers.ByteBuffer(appMetadataBytes));
                    update = BarrageUpdateMetadata.getRootAsBarrageUpdateMetadata(new ByteBuffer(new Uint8Array(barrageMessageWrapper.msgPayloadArray())));
                }
                TableSnapshot snapshot = BarrageUtils.createSnapshot(header, BarrageUtils.typedArrayToLittleEndianByteBuffer(flightData.getDataBody_asU8()), update, true, columnTypes);
                callback.onSuccess(snapshot);
            });
            stream.onStatus(status -> {
                if (!status.isOk()) {
                    callback.onFailure(status.getDetails());
                }
            });
        }).then(defer()).then(snapshot -> {
            SubscriptionTableData pretendSubscription = new SubscriptionTableData(Js.uncheckedCast(columns), state.getRowFormatColumn() == null ? NO_ROW_FORMAT_COLUMN : state.getRowFormatColumn().getIndex(), null);
            TableData data = pretendSubscription.handleSnapshot(snapshot);
            return Promise.resolve(data);
        }).then(defer());
    });
}