dongxiao1198 commented on code in PR #143: URL: https://github.com/apache/iceberg-cpp/pull/143#discussion_r2206219457
########## src/iceberg/manifest_reader_internal.cc: ########## @@ -0,0 +1,251 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +#include "manifest_reader_internal.h" + +#include <array> + +#include <nanoarrow/nanoarrow.h> + +#include "iceberg/arrow_c_data_guard_internal.h" +#include "iceberg/manifest_entry.h" +#include "iceberg/manifest_list.h" +#include "iceberg/schema.h" +#include "iceberg/schema_internal.h" +#include "iceberg/type.h" +#include "iceberg/util/macros.h" + +namespace iceberg { + +#define NANOARROW_RETURN_IF_NOT_OK(status, error) \ + if (status != NANOARROW_OK) [[unlikely]] { \ + return InvalidArrowData("Nanoarrow error: {}", error.message); \ + } + +Status ParsePartitionFieldSummaryList(ArrowArrayView* view_of_column, + std::vector<ManifestFile>& manifest_files) { + auto manifest_count = view_of_column->length; + // view_of_column is list<struct<PartitionFieldSummary>> + if (view_of_column->storage_type != ArrowType::NANOARROW_TYPE_LIST) { + return InvalidManifestList("partitions field should be a list."); + } + auto view_of_list_iterm = view_of_column->children[0]; + // view_of_list_iterm is struct<PartitionFieldSummary> + if (view_of_list_iterm->storage_type != ArrowType::NANOARROW_TYPE_STRUCT) { + return InvalidManifestList("partitions list field should be a list."); + } + if (view_of_list_iterm->n_children != 4) { + return InvalidManifestList("PartitionFieldSummary should have 4 fields."); + } + if (view_of_list_iterm->children[0]->storage_type != ArrowType::NANOARROW_TYPE_BOOL) { + return InvalidManifestList("contains_null should have be bool type column."); + } + auto contains_null = view_of_list_iterm->children[0]; + if (view_of_list_iterm->children[1]->storage_type != ArrowType::NANOARROW_TYPE_BOOL) { + return InvalidManifestList("contains_nan should have be bool type column."); + } + auto contains_nan = view_of_list_iterm->children[1]; + if (view_of_list_iterm->children[2]->storage_type != ArrowType::NANOARROW_TYPE_BINARY) { + return InvalidManifestList("lower_bound should have be binary type column."); + } + auto lower_bound_list = view_of_list_iterm->children[2]; + if (view_of_list_iterm->children[3]->storage_type != ArrowType::NANOARROW_TYPE_BINARY) { + return InvalidManifestList("upper_bound should have be binary type column."); + } + auto upper_bound_list = view_of_list_iterm->children[3]; + for (int64_t manifest_idx = 0; manifest_idx < manifest_count; manifest_idx++) { + auto offset = ArrowArrayViewListChildOffset(view_of_column, manifest_idx); + auto next_offset = ArrowArrayViewListChildOffset(view_of_column, manifest_idx + 1); + // partitions from offset to next_offset belongs to manifest_idx + auto& manifest_file = manifest_files[manifest_idx]; + for (int64_t partition_idx = offset; partition_idx < next_offset; partition_idx++) { + PartitionFieldSummary partition_field_summary; + if (!ArrowArrayViewIsNull(contains_null, partition_idx)) { + partition_field_summary.contains_null = + ArrowArrayViewGetIntUnsafe(contains_null, partition_idx); + } + if (!ArrowArrayViewIsNull(contains_nan, partition_idx)) { + partition_field_summary.contains_nan = + ArrowArrayViewGetIntUnsafe(contains_nan, partition_idx); + } + if (!ArrowArrayViewIsNull(lower_bound_list, partition_idx)) { + auto buffer = ArrowArrayViewGetBytesUnsafe(lower_bound_list, partition_idx); + partition_field_summary.lower_bound = std::vector<uint8_t>( + buffer.data.as_char, buffer.data.as_char + buffer.size_bytes); + } + if (!ArrowArrayViewIsNull(upper_bound_list, partition_idx)) { + auto buffer = ArrowArrayViewGetBytesUnsafe(upper_bound_list, partition_idx); + partition_field_summary.upper_bound = std::vector<uint8_t>( + buffer.data.as_char, buffer.data.as_char + buffer.size_bytes); + } + + manifest_file.partitions.emplace_back(partition_field_summary); + } + } + return {}; +} + +Result<std::vector<ManifestFile>> ParseManifestListEntry(ArrowSchema* schema, + ArrowArray* array_in, + const Schema& iceberg_schema) { + if (schema->n_children != array_in->n_children) { + return InvalidManifestList("Columns size not match between schema:{} and array:{}", + schema->n_children, array_in->n_children); + } + if (iceberg_schema.fields().size() != array_in->n_children) { + return InvalidManifestList("Columns size not match between schema:{} and array:{}", + iceberg_schema.fields().size(), array_in->n_children); + } + + ArrowError error; + ArrowArrayView array_view; + auto status = ArrowArrayViewInitFromSchema(&array_view, schema, &error); + NANOARROW_RETURN_IF_NOT_OK(status, error); + internal::ArrowArrayViewGuard view_guard(&array_view); + status = ArrowArrayViewSetArray(&array_view, array_in, &error); + NANOARROW_RETURN_IF_NOT_OK(status, error); + status = ArrowArrayViewValidate(&array_view, NANOARROW_VALIDATION_LEVEL_FULL, &error); + NANOARROW_RETURN_IF_NOT_OK(status, error); + + std::vector<ManifestFile> manifest_files; + manifest_files.resize(array_in->length); + + for (int64_t idx = 0; idx < array_in->n_children; idx++) { + const auto& field = iceberg_schema.GetFieldByIndex(idx); + if (!field.has_value()) { + return InvalidSchema("Field index {} is not found in schema", idx); + } + auto field_name = field.value().get().name(); + bool required = !field.value().get().optional(); + auto view_of_column = array_view.children[idx]; + +#define PARSE_PRIMITIVE_FIELD(item, type) \ + for (size_t row_idx = 0; row_idx < view_of_column->length; row_idx++) { \ + if (!ArrowArrayViewIsNull(view_of_column, row_idx)) { \ Review Comment: maybe specific the version of manifest&manifest list in v1|v2|v3 is better to valid the schema of file -- This is an automated message from the Apache Git Service. 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