Beispiel #1
0
 private static ColumnData findColumnValue(StreamData tupleData, String name) {
   for (ColumnData val : tupleData.getColumnList()) {
     if (val.getName().equals(name)) {
       return val;
     }
   }
   return null;
 }
Beispiel #2
0
  private WebSocketReplyData processPublishRequest(
      WebSocketDecodeContext ctx, WebSocketDecoder decoder) throws WebSocketException {
    YarchDatabase ydb = YarchDatabase.getInstance(processor.getInstance());

    StreamData req = decoder.decodeMessageData(ctx, SchemaArchive.StreamData.MERGE).build();
    Stream stream = ydb.getStream(req.getStream());
    if (stream == null) {
      throw new WebSocketException(
          ctx.getRequestId(), "Cannot find stream '" + req.getStream() + "'");
    }

    TupleDefinition tdef = stream.getDefinition();
    List<Object> tupleColumns = new ArrayList<>();

    // 'fixed' colums
    for (ColumnDefinition cdef : stream.getDefinition().getColumnDefinitions()) {
      ColumnData providedField = findColumnValue(req, cdef.getName());
      if (providedField == null) continue;
      if (!providedField.hasValue()) {
        throw new WebSocketException(
            ctx.getRequestId(), "No value was provided for column " + cdef.getName());
      }
      Object column =
          makeTupleColumn(ctx, cdef.getName(), providedField.getValue(), cdef.getType());
      tupleColumns.add(column);
    }

    // 'dynamic' columns
    for (ColumnData val : req.getColumnList()) {
      if (stream.getDefinition().getColumn(val.getName()) == null) {
        DataType type = dataTypeFromValue(val.getValue());
        tdef.addColumn(val.getName(), type);
        Object column = makeTupleColumn(ctx, val.getName(), val.getValue(), type);
        tupleColumns.add(column);
      }
    }

    Tuple t = new Tuple(tdef, tupleColumns);
    log.info("Emitting tuple {} to {}", t, stream.getName());
    stream.emitTuple(t);
    return toAckReply(ctx.getRequestId());
  }