zhjwpku commented on code in PR #60: URL: https://github.com/apache/iceberg-cpp/pull/60#discussion_r2033357793
########## src/iceberg/snapshot.h: ########## @@ -0,0 +1,217 @@ +/* + * 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. + */ + +#pragma once + +#include <optional> +#include <string> +#include <unordered_map> + +#include "iceberg/iceberg_export.h" +#include "iceberg/util/formattable.h" + +namespace iceberg { + +/// Optional Snapshot Summary Fields +/// Metrics +/// See https://iceberg.apache.org/spec/#metrics + +/// \brief Number of data files added in the snapshot +constexpr std::string_view kAddedDataFilesKey = "added-data-files"; +/// \brief Number of data files deleted in the snapshot +constexpr std::string_view kDeletedDataFilesKey = "deleted-data-files"; +/// \brief Total number of live data files in the snapshot +constexpr std::string_view kTotalDataFilesKey = "total-data-files"; +/// \brief Number of positional/equality delete files and deletion vectors added in the +/// snapshot +constexpr std::string_view kAddedDeleteFilesKey = "added-delete-files"; +/// \brief Number of equality delete files added in the snapshot +constexpr std::string_view kAddedEqDeleteFilesKey = "added-equality-delete-files"; +/// \brief Number of equality delete files removed in the snapshot +constexpr std::string_view kRemovedEqDeleteFilesKey = "removed-equality-delete-files"; +/// \brief Number of position delete files added in the snapshot +constexpr std::string_view kAddedPosDeleteFilesKey = "added-position-delete-files"; +/// \brief Number of position delete files removed in the snapshot +constexpr std::string_view kRemovedPosDeleteFilesKey = "removed-position-delete-files"; +/// \brief Number of deletion vectors added in the snapshot +constexpr std::string_view kAddedDVSKey = "added-dvs"; +/// \brief Number of deletion vectors removed in the snapshot +constexpr std::string_view kRemovedDVSKey = "removed-dvs"; +/// \brief Number of positional/equality delete files and deletion vectors removed in the +/// snapshot +constexpr std::string_view kRemovedDeleteFilesKey = "removed-delete-files"; +/// \brief Total number of live positional/equality delete files and deletion vectors in +/// the snapshot +constexpr std::string_view kTotalDeleteFilesKey = "total-delete-files"; +/// \brief Number of records added in the snapshot +constexpr std::string_view kAddedRecordsKey = "added-records"; +/// \brief Number of records deleted in the snapshot +constexpr std::string_view kDeletedRecordsKey = "deleted-records"; +/// \brief Total number of records in the snapshot +constexpr std::string_view kTotalRecordsKey = "total-records"; +/// \brief The size of files added in the snapshot +constexpr std::string_view kAddedFileSizeKey = "added-files-size"; +/// \brief The size of files removed in the snapshot +constexpr std::string_view kRemovedFileSizeKey = "removed-files-size"; +/// \brief Total size of live files in the snapshot +constexpr std::string_view kTotalFileSizeKey = "total-files-size"; +/// \brief Number of position delete records added in the snapshot +constexpr std::string_view kAddedPosDeletesKey = "added-position-deletes"; +/// \brief Number of position delete records removed in the snapshot +constexpr std::string_view kRemovedPosDeletesKey = "removed-position-deletes"; +/// \brief Total number of position delete records in the snapshot +constexpr std::string_view kTotalPosDeletesKey = "total-position-deletes"; +/// \brief Number of equality delete records added in the snapshot +constexpr std::string_view kAddedEqDeletesKey = "added-equality-deletes"; +/// \brief Number of equality delete records removed in the snapshot +constexpr std::string_view kRemovedEqDeletesKey = "removed-equality-deletes"; +/// \brief Total number of equality delete records in the snapshot +constexpr std::string_view kTotalEqDeletesKey = "total-equality-deletes"; +/// \brief Number of duplicate files deleted (duplicates are files recorded more than once +/// in the manifest) +constexpr std::string_view kDeletedDuplicatedFilesKey = "deleted-duplicate-files"; +/// \brief Number of partitions with files added or removed in the snapshot +constexpr std::string_view kChangedPartitionCountProp = "changed-partition-count"; + +/// Other Fields +/// See https://iceberg.apache.org/spec/#other-fields + +/// \brief The Write-Audit-Publish id of a staged snapshot +constexpr std::string_view kWAPIDKey = "wap.id"; +/// \brief The Write-Audit-Publish id of a snapshot already been published +constexpr std::string_view kPublishedWAPIDKey = "published-wap-id"; +/// \brief The original id of a cherry-picked snapshot +constexpr std::string_view kSourceSnapshotIDKey = "source-snapshot-id"; +/// \brief Name of the engine that created the snapshot +constexpr std::string_view kEngineNameKey = "engine-name"; +/// \brief Version of the engine that created the snapshot +constexpr std::string_view kEngineVersionKey = "engine-version"; + +/// \brief The operation field is used by some operations, like snapshot expiration, to +/// skip processing certain snapshots. +enum class Operation { Review Comment: Is it acceptable by embedding the Operation in Summary class? -- This is an automated message from the Apache Git Service. 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