Package io.deephaven.extensions.barrage.util

Class BarrageUtil

java.lang.Object
io.deephaven.extensions.barrage.util.BarrageUtil
public class BarrageUtil extends Object

  • Field Details

    • DEFAULT_SUBSCRIPTION_OPTIONS

      public static final BarrageSubscriptionOptions DEFAULT_SUBSCRIPTION_OPTIONS

    • DEFAULT_SNAPSHOT_OPTIONS

      public static final BarrageSnapshotOptions DEFAULT_SNAPSHOT_OPTIONS

    • FLATBUFFER_MAGIC

      public static final long FLATBUFFER_MAGIC
      See Also:

    • TARGET_SNAPSHOT_PERCENTAGE

      public static final double TARGET_SNAPSHOT_PERCENTAGE

    • MIN_SNAPSHOT_CELL_COUNT

      public static final long MIN_SNAPSHOT_CELL_COUNT

    • MAX_SNAPSHOT_CELL_COUNT

      public static final long MAX_SNAPSHOT_CELL_COUNT

    • NANO_SINCE_EPOCH_TYPE

      public static final org.apache.arrow.vector.types.pojo.ArrowType.Timestamp NANO_SINCE_EPOCH_TYPE
      Note that arrow's wire format states that Timestamps without timezones are not UTC -- that they are no timezone at all. It's very important that we mark these times as UTC.

    • TABLE_ATTRIBUTE_IS_FLAT

      public static final String TABLE_ATTRIBUTE_IS_FLAT
      The name of the attribute that indicates that a table is flat.
      See Also:

    • ATTR_DH_PREFIX

      public static final String ATTR_DH_PREFIX
      The Apache Arrow metadata prefix for Deephaven attributes.
      See Also:

    • ATTR_TYPE_TAG

      public static final String ATTR_TYPE_TAG
      The deephaven metadata tag to indicate the deephaven column type.
      See Also:

    • ATTR_COMPONENT_TYPE_TAG

      public static final String ATTR_COMPONENT_TYPE_TAG
      The deephaven metadata tag to indicate the deephaven column component type.
      See Also:

  • Constructor Details

    • BarrageUtil

      public BarrageUtil()

  • Method Details

    • createSubscriptionRequestMetadataBytes

      public static byte[] createSubscriptionRequestMetadataBytes(@NotNull @org.jetbrains.annotations.NotNull byte[] ticketId, @Nullable @Nullable BarrageSubscriptionOptions options)
      Create a subscription request payload to be sent via DoExchange.
      Parameters:
      ticketId - the ticket id of the table to subscribe to
      options - the barrage options
      Returns:
      the subscription request payload

    • createSubscriptionRequestMetadataBytes

      public static byte[] createSubscriptionRequestMetadataBytes(@NotNull @org.jetbrains.annotations.NotNull byte[] ticketId, @Nullable @Nullable BarrageSubscriptionOptions options, @Nullable @Nullable RowSet viewport, @Nullable @Nullable BitSet columns, boolean reverseViewport)
      Create a subscription request payload to be sent via DoExchange.
      Parameters:
      ticketId - the ticket id of the table to subscribe to
      options - the barrage options
      viewport - the viewport to subscribe to
      columns - the columns to subscribe to
      reverseViewport - whether to reverse the viewport
      Returns:
      the subscription request payload

    • createSnapshotRequestMetadataBytes

      public static byte[] createSnapshotRequestMetadataBytes(@NotNull @org.jetbrains.annotations.NotNull byte[] ticketId, @Nullable @Nullable BarrageSnapshotOptions options)
      Create a snapshot request payload to be sent via DoExchange.
      Parameters:
      ticketId - the ticket id of the table to subscribe to
      options - the barrage options
      Returns:
      the subscription request payload

    • createSnapshotRequestMetadataBytes

      public static byte[] createSnapshotRequestMetadataBytes(@NotNull @org.jetbrains.annotations.NotNull byte[] ticketId, @Nullable @Nullable BarrageSnapshotOptions options, @Nullable @Nullable RowSet viewport, @Nullable @Nullable BitSet columns, boolean reverseViewport)
      Create a subscription request payload to be sent via DoExchange.
      Parameters:
      ticketId - the ticket id of the table to subscribe to
      options - the barrage options
      viewport - the viewport to subscribe to
      columns - the columns to subscribe to
      reverseViewport - whether to reverse the viewport
      Returns:
      the subscription request payload

    • createSerializationOptionsMetadataBytes

      public static byte[] createSerializationOptionsMetadataBytes(@NotNull @org.jetbrains.annotations.NotNull byte[] ticketId, @Nullable @Nullable BarrageSubscriptionOptions options)
      Create a snapshot request payload to be sent via DoExchange.
      Parameters:
      ticketId - the ticket id of the table to subscribe to
      options - the barrage options
      Returns:
      the subscription request payload

    • schemaBytesFromTable

      public static com.google.protobuf.ByteString schemaBytesFromTable(@NotNull @NotNull Table table)

    • schemaBytesFromTableDefinition

      public static com.google.protobuf.ByteString schemaBytesFromTableDefinition(@NotNull @NotNull TableDefinition tableDefinition, @NotNull @NotNull Map<String,Object> attributes, boolean isFlat)

    • schemaFromTable

      public static org.apache.arrow.vector.types.pojo.Schema schemaFromTable(@NotNull @NotNull Table table)

    • toSchema

      public static org.apache.arrow.vector.types.pojo.Schema toSchema(TableDefinition definition, Map<String,Object> attributes, boolean isFlat)

    • schemaBytes

      public static com.google.protobuf.ByteString schemaBytes(@NotNull @NotNull ToIntFunction<com.google.flatbuffers.FlatBufferBuilder> schemaPayloadWriter)

    • makeTableSchemaPayload

      public static int makeTableSchemaPayload(@NotNull @NotNull com.google.flatbuffers.FlatBufferBuilder builder, @NotNull @NotNull BarrageOptions options, @NotNull @NotNull TableDefinition tableDefinition, @NotNull @NotNull Map<String,Object> attributes, boolean isFlat)

    • makeSchema

      public static org.apache.arrow.vector.types.pojo.Schema makeSchema(@NotNull @NotNull BarrageOptions options, @NotNull @NotNull TableDefinition tableDefinition, @NotNull @NotNull Map<String,Object> attributes, boolean isFlat)

    • attributesToMetadata

      @NotNull public static @NotNull Map<String,String> attributesToMetadata(@NotNull @NotNull Map<String,Object> attributes)

    • attributesToMetadata

      @NotNull public static @NotNull Map<String,String> attributesToMetadata(@NotNull @NotNull Map<String,Object> attributes, boolean isFlat)

    • columnDefinitionsToFields

      public static Stream<org.apache.arrow.vector.types.pojo.Field> columnDefinitionsToFields(@NotNull @NotNull Map<String,String> columnDescriptions, @Nullable @Nullable InputTableUpdater inputTableUpdater, @NotNull @NotNull TableDefinition tableDefinition, @NotNull @NotNull Collection<ColumnDefinition<?>> columnDefinitions, @NotNull @NotNull Function<String,Map<String,String>> fieldMetadataFactory, @NotNull @NotNull Map<String,Object> attributes)

    • columnDefinitionsToFields

      public static Stream<org.apache.arrow.vector.types.pojo.Field> columnDefinitionsToFields(@NotNull @NotNull Map<String,String> columnDescriptions, @Nullable @Nullable InputTableUpdater inputTableUpdater, @NotNull @NotNull TableDefinition tableDefinition, @NotNull @NotNull Collection<ColumnDefinition<?>> columnDefinitions, @NotNull @NotNull Function<String,Map<String,String>> fieldMetadataFactory, @NotNull @NotNull Map<String,Object> attributes, boolean columnsAsList)

    • putMetadata

      public static void putMetadata(Map<String,String> metadata, String key, String value)

    • getDefaultType

      public static BarrageTypeInfo<org.apache.arrow.vector.types.pojo.Field> getDefaultType(@NotNull @NotNull org.apache.arrow.vector.types.pojo.Field field)

    • convertTableDefinition

      public static TableDefinition convertTableDefinition(ExportedTableCreationResponse response)

    • convertArrowSchema

      public static BarrageUtil.ConvertedArrowSchema convertArrowSchema(ExportedTableCreationResponse response)

    • convertArrowSchema

      public static BarrageUtil.ConvertedArrowSchema convertArrowSchema(org.apache.arrow.flatbuf.Schema schema)

    • convertArrowSchema

      public static BarrageUtil.ConvertedArrowSchema convertArrowSchema(org.apache.arrow.vector.types.pojo.Schema schema)

    • arrowFieldFor

      public static org.apache.arrow.vector.types.pojo.Field arrowFieldFor(String name, Class<?> type, Class<?> componentType, Map<String,String> metadata, boolean columnAsList)

    • flatbufFieldFor

      public static org.apache.arrow.flatbuf.Field flatbufFieldFor(ColumnDefinition<?> columnDefinition, Map<String,String> metadata)

    • flatbufFieldFor

      public static org.apache.arrow.flatbuf.Field flatbufFieldFor(String name, Class<?> type, Class<?> componentType, Map<String,String> metadata)

    • createAndSendStaticSnapshot

      public static void createAndSendStaticSnapshot(BarrageMessageWriter.Factory bmwFactory, BaseTable<?> table, BitSet columns, RowSet viewport, boolean reverseViewport, BarrageSnapshotOptions snapshotRequestOptions, io.grpc.stub.StreamObserver<BarrageMessageWriter.MessageView> listener, BarragePerformanceLog.SnapshotMetricsHelper metrics)

    • createAndSendSnapshot

      public static void createAndSendSnapshot(BarrageMessageWriter.Factory bwmFactory, BaseTable<?> table, BitSet columns, RowSet viewport, boolean reverseViewport, BarrageSnapshotOptions options, io.grpc.stub.StreamObserver<BarrageMessageWriter.MessageView> listener, BarragePerformanceLog.SnapshotMetricsHelper metrics)