org.apache.beam.sdk.io.kudu.KuduTestUtils.java Source code

Introduction

Here is the source code for org.apache.beam.sdk.io.kudu.KuduTestUtils.java

Source

/*
 * 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.kudu;

import com.google.common.collect.ImmutableList;
import org.apache.kudu.ColumnSchema;
import org.apache.kudu.Schema;
import org.apache.kudu.Type;
import org.apache.kudu.client.CreateTableOptions;
import org.apache.kudu.client.KuduException;
import org.apache.kudu.client.KuduScanner;
import org.apache.kudu.client.KuduTable;
import org.apache.kudu.client.Operation;
import org.apache.kudu.client.PartialRow;
import org.apache.kudu.client.Upsert;

/** Utilities for Kudu tests. */
class KuduTestUtils {
    static final String COL_ID = "id";
    static final String COL_NAME = "name";

    static final Schema SCHEMA = new Schema(
            ImmutableList.of(new ColumnSchema.ColumnSchemaBuilder(COL_ID, Type.INT64).key(true).build(),
                    new ColumnSchema.ColumnSchemaBuilder(COL_NAME, Type.STRING).nullable(false)
                            .desiredBlockSize(4096).encoding(ColumnSchema.Encoding.PLAIN_ENCODING)
                            .compressionAlgorithm(ColumnSchema.CompressionAlgorithm.NO_COMPRESSION).build()));

    static CreateTableOptions createTableOptions() {
        return new CreateTableOptions().setRangePartitionColumns(ImmutableList.of(COL_ID)).setNumReplicas(1);
    }

    /** Creates an Upsert Operation that matches the schema for each input. */
    static class GenerateUpsert implements KuduIO.FormatFunction<Long> {
        @Override
        public Operation apply(TableAndRecord<Long> input) {
            Upsert upsert = input.getTable().newUpsert();
            PartialRow row = upsert.getRow();
            row.addLong(COL_ID, input.getRecord());
            row.addString(COL_NAME, input.getRecord() + ": name");
            return upsert;
        }
    }

    /** Returns the count of rows for the given table. */
    static int rowCount(KuduTable table) throws KuduException {
        KuduScanner scanner = table.getAsyncClient().syncClient().newScannerBuilder(table).build();
        try {
            int rowCount = 0;
            while (scanner.hasMoreRows()) {
                rowCount += scanner.nextRows().getNumRows();
            }
            return rowCount;
        } finally {
            scanner.close();
        }
    }
}