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docs(samples): add create external table using hivepartitioningoptions (
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Praful Makani committed Nov 24, 2020
1 parent 08249bc commit 3994be62b63b4b56944499c10b42d77ced4ab33c
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/*
* Copyright 2020 Google LLC
*
* Licensed 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 com.example.bigquery;

// [START bigquery_set_hivepartitioningoptions]
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.ExternalTableDefinition;
import com.google.cloud.bigquery.FormatOptions;
import com.google.cloud.bigquery.HivePartitioningOptions;
import com.google.cloud.bigquery.TableId;
import com.google.cloud.bigquery.TableInfo;

// Sample to create external table using hive partitioning
public class SetHivePartitioningOptions {

public static void main(String[] args) {
// TODO(developer): Replace these variables before running the sample.
String datasetName = "MY_DATASET_NAME";
String tableName = "MY_TABLE_NAME";
String sourceUri = "gs://cloud-samples-data/bigquery/hive-partitioning-samples/customlayout/*";
String sourceUriPrefix =
"gs://cloud-samples-data/bigquery/hive-partitioning-samples/customlayout/{pkey:STRING}/";
setHivePartitioningOptions(datasetName, tableName, sourceUriPrefix, sourceUri);
}

public static void setHivePartitioningOptions(
String datasetName, String tableName, String sourceUriPrefix, String sourceUri) {
try {
// Initialize client that will be used to send requests. This client only needs to be created
// once, and can be reused for multiple requests.
BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();

// Configuring partitioning options
HivePartitioningOptions hivePartitioningOptions =
HivePartitioningOptions.newBuilder()
.setMode("CUSTOM")
.setRequirePartitionFilter(true)
.setSourceUriPrefix(sourceUriPrefix)
.build();

TableId tableId = TableId.of(datasetName, tableName);
ExternalTableDefinition customTable =
ExternalTableDefinition.newBuilder(sourceUri, FormatOptions.parquet())
.setAutodetect(true)
.setHivePartitioningOptions(hivePartitioningOptions)
.build();
bigquery.create(TableInfo.of(tableId, customTable));
System.out.println("External table created using hivepartitioningoptions");
} catch (BigQueryException e) {
System.out.println("External table was not created" + e.toString());
}
}
}
// [END bigquery_set_hivepartitioningoptions]
@@ -0,0 +1,85 @@
/*
* Copyright 2020 Google LLC
*
* Licensed 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 com.example.bigquery;

import static com.google.common.truth.Truth.assertThat;
import static junit.framework.TestCase.assertNotNull;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.UUID;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

public class SetHivePartitioningOptionsIT {

private static final String ID = UUID.randomUUID().toString().substring(0, 8);
private final Logger log = Logger.getLogger(this.getClass().getName());
private String tableName;
private ByteArrayOutputStream bout;
private PrintStream out;
private PrintStream originalPrintStream;

private static final String BIGQUERY_DATASET_NAME = requireEnvVar("BIGQUERY_DATASET_NAME");

private static String requireEnvVar(String varName) {
String value = System.getenv(varName);
assertNotNull(
"Environment variable " + varName + " is required to perform these tests.",
System.getenv(varName));
return value;
}

@BeforeClass
public static void checkRequirements() {
requireEnvVar("BIGQUERY_DATASET_NAME");
}

@Before
public void setUp() {
// Create a test table
tableName = "SET_HIVEPARTITIONINGOPTIONS_FROM_GCS_TEST_" + ID;
bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
originalPrintStream = System.out;
System.setOut(out);
}

@After
public void tearDown() {
// Clean up
DeleteTable.deleteTable(BIGQUERY_DATASET_NAME, tableName);
// restores print statements in the original method
System.out.flush();
System.setOut(originalPrintStream);
log.log(Level.INFO, bout.toString());
}

@Test
public void testSetHivePartitioningOptions() {
String sourceUri = "gs://cloud-samples-data/bigquery/hive-partitioning-samples/customlayout/*";
String sourceUriPrefix =
"gs://cloud-samples-data/bigquery/hive-partitioning-samples/customlayout/{pkey:STRING}/";
SetHivePartitioningOptions.setHivePartitioningOptions(
BIGQUERY_DATASET_NAME, tableName, sourceUriPrefix, sourceUri);
assertThat(bout.toString()).contains("External table created using hivepartitioningoptions");
}
}

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