Examples with CellModel org.apache.hadoop.hbase.rest.model.CellModel used on opensource projects

Example 1 with CellModel

use of org.apache.hadoop.hbase.rest.model.CellModel in project hbase by apache.

the class RowResource method checkAndDelete.

/**
   * Validates the input request parameters, parses columns from CellSetModel,
   * and invokes checkAndDelete on HTable.
   *
   * @param model instance of CellSetModel
   * @return Response 200 OK, 304 Not modified, 400 Bad request
   */
Response checkAndDelete(final CellSetModel model) {
    Table table = null;
    Delete delete = null;
    try {
        table = servlet.getTable(tableResource.getName());
        if (model.getRows().size() != 1) {
            servlet.getMetrics().incrementFailedDeleteRequests(1);
            return Response.status(Response.Status.BAD_REQUEST).type(MIMETYPE_TEXT).entity("Bad request" + CRLF).build();
        }
        RowModel rowModel = model.getRows().get(0);
        byte[] key = rowModel.getKey();
        if (key == null) {
            key = rowspec.getRow();
        }
        if (key == null) {
            servlet.getMetrics().incrementFailedDeleteRequests(1);
            return Response.status(Response.Status.BAD_REQUEST).type(MIMETYPE_TEXT).entity("Bad request: Row key found to be null." + CRLF).build();
        }
        List<CellModel> cellModels = rowModel.getCells();
        int cellModelCount = cellModels.size();
        delete = new Delete(key);
        boolean retValue;
        CellModel valueToDeleteCell = rowModel.getCells().get(cellModelCount - 1);
        byte[] valueToDeleteColumn = valueToDeleteCell.getColumn();
        if (valueToDeleteColumn == null) {
            try {
                valueToDeleteColumn = rowspec.getColumns()[0];
            } catch (final ArrayIndexOutOfBoundsException e) {
                servlet.getMetrics().incrementFailedDeleteRequests(1);
                return Response.status(Response.Status.BAD_REQUEST).type(MIMETYPE_TEXT).entity("Bad request: Column not specified for check." + CRLF).build();
            }
        }
        byte[][] parts;
        // Copy all the cells to the Delete request if extra cells are sent
        if (cellModelCount > 1) {
            for (int i = 0, n = cellModelCount - 1; i < n; i++) {
                CellModel cell = cellModels.get(i);
                byte[] col = cell.getColumn();
                if (col == null) {
                    servlet.getMetrics().incrementFailedPutRequests(1);
                    return Response.status(Response.Status.BAD_REQUEST).type(MIMETYPE_TEXT).entity("Bad request: Column found to be null." + CRLF).build();
                }
                parts = KeyValue.parseColumn(col);
                if (parts.length == 1) {
                    // Only Column Family is specified
                    delete.addFamily(parts[0], cell.getTimestamp());
                } else if (parts.length == 2) {
                    delete.addColumn(parts[0], parts[1], cell.getTimestamp());
                } else {
                    servlet.getMetrics().incrementFailedDeleteRequests(1);
                    return Response.status(Response.Status.BAD_REQUEST).type(MIMETYPE_TEXT).entity("Bad request: Column to delete incorrectly specified." + CRLF).build();
                }
            }
        }
        parts = KeyValue.parseColumn(valueToDeleteColumn);
        if (parts.length == 2) {
            if (parts[1].length != 0) {
                // if that is the only cell passed to the rest api
                if (cellModelCount == 1) {
                    delete.addColumns(parts[0], parts[1]);
                }
                retValue = table.checkAndDelete(key, parts[0], parts[1], valueToDeleteCell.getValue(), delete);
            } else {
                // The case of empty qualifier.
                if (cellModelCount == 1) {
                    delete.addColumns(parts[0], Bytes.toBytes(StringUtils.EMPTY));
                }
                retValue = table.checkAndDelete(key, parts[0], Bytes.toBytes(StringUtils.EMPTY), valueToDeleteCell.getValue(), delete);
            }
        } else {
            servlet.getMetrics().incrementFailedDeleteRequests(1);
            return Response.status(Response.Status.BAD_REQUEST).type(MIMETYPE_TEXT).entity("Bad request: Column to check incorrectly specified." + CRLF).build();
        }
        if (LOG.isTraceEnabled()) {
            LOG.trace("CHECK-AND-DELETE " + delete.toString() + ", returns " + retValue);
        }
        if (!retValue) {
            servlet.getMetrics().incrementFailedDeleteRequests(1);
            return Response.status(Response.Status.NOT_MODIFIED).type(MIMETYPE_TEXT).entity(" Delete check failed." + CRLF).build();
        }
        ResponseBuilder response = Response.ok();
        servlet.getMetrics().incrementSucessfulDeleteRequests(1);
        return response.build();
    } catch (Exception e) {
        servlet.getMetrics().incrementFailedDeleteRequests(1);
        return processException(e);
    } finally {
        if (table != null)
            try {
                table.close();
            } catch (IOException ioe) {
                LOG.debug("Exception received while closing the table", ioe);
            }
    }
}

Example 2 with CellModel

use of org.apache.hadoop.hbase.rest.model.CellModel in project hbase by apache.

the class RowResource method get.

@GET
@Produces({ MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF, MIMETYPE_PROTOBUF_IETF })
public Response get(@Context final UriInfo uriInfo) {
    if (LOG.isTraceEnabled()) {
        LOG.trace("GET " + uriInfo.getAbsolutePath());
    }
    servlet.getMetrics().incrementRequests(1);
    MultivaluedMap<String, String> params = uriInfo.getQueryParameters();
    try {
        ResultGenerator generator = ResultGenerator.fromRowSpec(tableResource.getName(), rowspec, null, !params.containsKey(NOCACHE_PARAM_NAME));
        if (!generator.hasNext()) {
            servlet.getMetrics().incrementFailedGetRequests(1);
            return Response.status(Response.Status.NOT_FOUND).type(MIMETYPE_TEXT).entity("Not found" + CRLF).build();
        }
        int count = 0;
        CellSetModel model = new CellSetModel();
        Cell value = generator.next();
        byte[] rowKey = CellUtil.cloneRow(value);
        RowModel rowModel = new RowModel(rowKey);
        do {
            if (!Bytes.equals(CellUtil.cloneRow(value), rowKey)) {
                model.addRow(rowModel);
                rowKey = CellUtil.cloneRow(value);
                rowModel = new RowModel(rowKey);
            }
            rowModel.addCell(new CellModel(CellUtil.cloneFamily(value), CellUtil.cloneQualifier(value), value.getTimestamp(), CellUtil.cloneValue(value)));
            if (++count > rowspec.getMaxValues()) {
                break;
            }
            value = generator.next();
        } while (value != null);
        model.addRow(rowModel);
        servlet.getMetrics().incrementSucessfulGetRequests(1);
        return Response.ok(model).build();
    } catch (Exception e) {
        servlet.getMetrics().incrementFailedPutRequests(1);
        return processException(e);
    }
}

Example 3 with CellModel

use of org.apache.hadoop.hbase.rest.model.CellModel in project hbase by apache.

the class ScannerInstanceResource method get.

@GET
@Produces({ MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF, MIMETYPE_PROTOBUF_IETF })
public Response get(@Context final UriInfo uriInfo, @QueryParam("n") int maxRows, @QueryParam("c") final int maxValues) {
    if (LOG.isTraceEnabled()) {
        LOG.trace("GET " + uriInfo.getAbsolutePath());
    }
    servlet.getMetrics().incrementRequests(1);
    if (generator == null) {
        servlet.getMetrics().incrementFailedGetRequests(1);
        return Response.status(Response.Status.NOT_FOUND).type(MIMETYPE_TEXT).entity("Not found" + CRLF).build();
    }
    CellSetModel model = new CellSetModel();
    RowModel rowModel = null;
    byte[] rowKey = null;
    int limit = batch;
    if (maxValues > 0) {
        limit = maxValues;
    }
    int count = limit;
    do {
        Cell value = null;
        try {
            value = generator.next();
        } catch (IllegalStateException e) {
            if (ScannerResource.delete(id)) {
                servlet.getMetrics().incrementSucessfulDeleteRequests(1);
            } else {
                servlet.getMetrics().incrementFailedDeleteRequests(1);
            }
            servlet.getMetrics().incrementFailedGetRequests(1);
            return Response.status(Response.Status.GONE).type(MIMETYPE_TEXT).entity("Gone" + CRLF).build();
        } catch (IllegalArgumentException e) {
            Throwable t = e.getCause();
            if (t instanceof TableNotFoundException) {
                return Response.status(Response.Status.NOT_FOUND).type(MIMETYPE_TEXT).entity("Not found" + CRLF).build();
            }
            throw e;
        }
        if (value == null) {
            if (LOG.isTraceEnabled()) {
                LOG.trace("generator exhausted");
            }
            // returned
            if (count == limit) {
                return Response.noContent().build();
            }
            break;
        }
        if (rowKey == null) {
            rowKey = CellUtil.cloneRow(value);
            rowModel = new RowModel(rowKey);
        }
        if (!Bytes.equals(CellUtil.cloneRow(value), rowKey)) {
            // specified number of rows
            if (maxRows > 0) {
                if (--maxRows == 0) {
                    generator.putBack(value);
                    break;
                }
            }
            model.addRow(rowModel);
            rowKey = CellUtil.cloneRow(value);
            rowModel = new RowModel(rowKey);
        }
        rowModel.addCell(new CellModel(CellUtil.cloneFamily(value), CellUtil.cloneQualifier(value), value.getTimestamp(), CellUtil.cloneValue(value)));
    } while (--count > 0);
    model.addRow(rowModel);
    ResponseBuilder response = Response.ok(model);
    response.cacheControl(cacheControl);
    servlet.getMetrics().incrementSucessfulGetRequests(1);
    return response.build();
}

Example 4 with CellModel

use of org.apache.hadoop.hbase.rest.model.CellModel in project hbase by apache.

the class ProtobufStreamingUtil method createModelFromResults.

private CellSetModel createModelFromResults(Result[] results) {
    CellSetModel cellSetModel = new CellSetModel();
    for (Result rs : results) {
        byte[] rowKey = rs.getRow();
        RowModel rModel = new RowModel(rowKey);
        List<Cell> kvs = rs.listCells();
        for (Cell kv : kvs) {
            rModel.addCell(new CellModel(CellUtil.cloneFamily(kv), CellUtil.cloneQualifier(kv), kv.getTimestamp(), CellUtil.cloneValue(kv)));
        }
        cellSetModel.addRow(rModel);
    }
    return cellSetModel;
}

Example 5 with CellModel

use of org.apache.hadoop.hbase.rest.model.CellModel in project hbase by apache.

the class TestScannersWithLabels method countCellSet.

private static int countCellSet(CellSetModel model) {
    int count = 0;
    Iterator<RowModel> rows = model.getRows().iterator();
    while (rows.hasNext()) {
        RowModel row = rows.next();
        Iterator<CellModel> cells = row.getCells().iterator();
        while (cells.hasNext()) {
            cells.next();
            count++;
        }
    }
    return count;
}