| /* |
| * 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.beam.sdk.io.gcp.spanner; |
| |
| import static org.apache.beam.sdk.io.gcp.spanner.MutationUtils.isPointDelete; |
| |
| import com.google.cloud.spanner.KeySet; |
| import com.google.cloud.spanner.Mutation; |
| import com.google.cloud.spanner.Mutation.Op; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterables; |
| |
| final class MutationCellCounter { |
| // Prevent construction. |
| private MutationCellCounter() {} |
| |
| /** Count the number of cells modified by {@link MutationGroup}. */ |
| public static long countOf(SpannerSchema spannerSchema, MutationGroup mutationGroup) { |
| long mutatedCells = 0L; |
| for (Mutation mutation : mutationGroup) { |
| if (mutation.getOperation() == Op.DELETE) { |
| // For single key deletes sum up all the columns in the schema. |
| // There is no clear way to estimate range deletes, so they are ignored. |
| if (isPointDelete(mutation)) { |
| final KeySet keySet = mutation.getKeySet(); |
| |
| final long rows = Iterables.size(keySet.getKeys()); |
| mutatedCells += rows * spannerSchema.getCellsMutatedPerRow(mutation.getTable()); |
| } |
| } else { |
| // sum the cells of the columns included in the mutation |
| for (String column : mutation.getColumns()) { |
| mutatedCells += spannerSchema.getCellsMutatedPerColumn(mutation.getTable(), column); |
| } |
| } |
| } |
| |
| return mutatedCells; |
| } |
| } |