| /* |
| * 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. |
| */ |
| |
| package org.apache.iceberg.util; |
| |
| import org.apache.iceberg.Snapshot; |
| import org.apache.iceberg.SnapshotSummary; |
| import org.apache.iceberg.TableMetadata; |
| import org.apache.iceberg.exceptions.DuplicateWAPCommitException; |
| |
| public class WapUtil { |
| |
| private WapUtil() { |
| } |
| |
| public static String stagedWapId(Snapshot snapshot) { |
| return snapshot.summary() != null ? snapshot.summary().get(SnapshotSummary.STAGED_WAP_ID_PROP) : null; |
| } |
| |
| public static String publishedWapId(Snapshot snapshot) { |
| return snapshot.summary() != null ? snapshot.summary().get(SnapshotSummary.PUBLISHED_WAP_ID_PROP) : null; |
| } |
| |
| /** |
| * Check if a given staged snapshot's associated wap-id was already published. Does not fail for non-WAP workflows. |
| * |
| * @param current the current {@link TableMetadata metadata} for the target table |
| * @param wapSnapshotId a snapshot id which could have been staged and is associated with a wap id |
| * @return the WAP ID that will be published, if the snapshot has one |
| */ |
| public static String validateWapPublish(TableMetadata current, long wapSnapshotId) { |
| Snapshot cherryPickSnapshot = current.snapshot(wapSnapshotId); |
| String wapId = stagedWapId(cherryPickSnapshot); |
| if (wapId != null && !wapId.isEmpty()) { |
| if (WapUtil.isWapIdPublished(current, wapId)) { |
| throw new DuplicateWAPCommitException(wapId); |
| } |
| } |
| |
| return wapId; |
| } |
| |
| private static boolean isWapIdPublished(TableMetadata current, String wapId) { |
| for (long ancestorId : SnapshotUtil.ancestorIds(current.currentSnapshot(), current::snapshot)) { |
| Snapshot snapshot = current.snapshot(ancestorId); |
| if (wapId.equals(stagedWapId(snapshot)) || wapId.equals(publishedWapId(snapshot))) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |