| /* |
| * 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.drill.metastore.iceberg.operate; |
| |
| import org.apache.drill.metastore.expressions.FilterExpression; |
| import org.apache.drill.metastore.iceberg.IcebergMetastoreContext; |
| import org.apache.drill.metastore.iceberg.transform.OperationTransformer; |
| import org.apache.drill.metastore.operate.AbstractModify; |
| import org.apache.drill.metastore.operate.MetadataTypeValidator; |
| import org.apache.drill.metastore.operate.Modify; |
| import org.apache.iceberg.Transaction; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Implementation of {@link Modify} interface based on {@link AbstractModify} parent class. |
| * Modifies information in Iceberg table based on given overwrite or delete operations. |
| * Executes given operations in one transaction. |
| * |
| * @param <T> Metastore component unit type |
| */ |
| public class IcebergModify<T> extends AbstractModify<T> { |
| |
| private final OperationTransformer<T> transformer; |
| private final IcebergMetastoreContext<T> context; |
| private final List<IcebergOperation> operations = new ArrayList<>(); |
| |
| public IcebergModify(MetadataTypeValidator metadataTypeValidator, IcebergMetastoreContext<T> context) { |
| super(metadataTypeValidator); |
| this.context = context; |
| this.transformer = context.transformer().operation(); |
| } |
| |
| @Override |
| public void execute() { |
| if (operations.isEmpty()) { |
| return; |
| } |
| executeOperations(operations); |
| } |
| |
| @Override |
| public void purge() { |
| executeOperations(Collections.singletonList(transformer.toDelete((FilterExpression) null))); |
| } |
| |
| @Override |
| protected void addOverwrite(List<T> units) { |
| operations.addAll(transformer.toOverwrite(units)); |
| } |
| |
| @Override |
| protected void addDelete(org.apache.drill.metastore.operate.Delete delete) { |
| operations.add(transformer.toDelete(delete)); |
| } |
| |
| private void executeOperations(List<IcebergOperation> operations) { |
| Transaction transaction = context.table().newTransaction(); |
| operations.forEach(op -> op.add(transaction)); |
| transaction.commitTransaction(); |
| |
| // expiration process should not intervene with data modification operations |
| // if expiration fails, will attempt to expire the next time |
| context.expirationHandler().expireQuietly(); |
| } |
| } |