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docs(samples): add schedule backfill (#390)
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Praful Makani committed Sep 30, 2020
1 parent 37097f8 commit 96eb331fdf9d4862d9149bb84d6d2493218db2fc
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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.bigquerydatatransfer;

// [START bigquerydatatransfer_schedule_backfill]
import com.google.api.gax.rpc.ApiException;
import com.google.cloud.bigquery.datatransfer.v1.DataTransferServiceClient;
import com.google.cloud.bigquery.datatransfer.v1.ScheduleOptions;
import com.google.cloud.bigquery.datatransfer.v1.TransferConfig;
import com.google.cloud.bigquery.datatransfer.v1.UpdateTransferConfigRequest;
import com.google.common.collect.ImmutableList;
import com.google.protobuf.FieldMask;
import com.google.protobuf.Timestamp;
import com.google.protobuf.util.FieldMaskUtil;
import java.io.IOException;
import org.threeten.bp.Clock;
import org.threeten.bp.Instant;
import org.threeten.bp.temporal.ChronoUnit;

// Sample to update schedule back fill for transfer config
public class ScheduleBackFill {

public static void main(String[] args) throws IOException {
// TODO(developer): Replace these variables before running the sample.
String configId = "MY_CONFIG_ID";
Clock clock = Clock.systemDefaultZone();
Instant instant = clock.instant();
Timestamp startDate =
Timestamp.newBuilder()
.setSeconds(instant.getEpochSecond())
.setNanos(instant.getNano())
.build();
Timestamp endDate =
Timestamp.newBuilder()
.setSeconds(instant.plus(10, ChronoUnit.DAYS).getEpochSecond())
.setNanos(instant.plus(10, ChronoUnit.DAYS).getNano())
.build();
TransferConfig transferConfig =
TransferConfig.newBuilder()
.setName(configId)
.setScheduleOptions(
ScheduleOptions.newBuilder().setStartTime(startDate).setEndTime(endDate).build())
.build();
FieldMask updateMask = FieldMaskUtil.fromStringList(ImmutableList.of("start_time", "end_time"));
scheduleBackFill(transferConfig, updateMask);
}

public static void scheduleBackFill(TransferConfig transferConfig, FieldMask updateMask)
throws IOException {
try (DataTransferServiceClient dataTransferServiceClient = DataTransferServiceClient.create()) {
UpdateTransferConfigRequest request =
UpdateTransferConfigRequest.newBuilder()
.setTransferConfig(transferConfig)
.setUpdateMask(updateMask)
.build();
TransferConfig updateConfig = dataTransferServiceClient.updateTransferConfig(request);
System.out.println(
"Schedule backfill updated successfully :" + updateConfig.getDisplayName());
} catch (ApiException ex) {
System.out.print("Schedule backfill was not updated." + ex.toString());
}
}
}
// [END bigquerydatatransfer_schedule_backfill]
@@ -0,0 +1,103 @@
/*
* 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.bigquerydatatransfer;

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

import com.google.cloud.bigquery.datatransfer.v1.ScheduleOptions;
import com.google.cloud.bigquery.datatransfer.v1.TransferConfig;
import com.google.common.collect.ImmutableList;
import com.google.protobuf.FieldMask;
import com.google.protobuf.Timestamp;
import com.google.protobuf.util.FieldMaskUtil;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
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;
import org.threeten.bp.Clock;
import org.threeten.bp.Instant;
import org.threeten.bp.temporal.ChronoUnit;

public class ScheduleBackFillIT {

private static final Logger LOG = Logger.getLogger(ScheduleBackFillIT.class.getName());
private ByteArrayOutputStream bout;
private PrintStream out;
private PrintStream originalPrintStream;

private static final String CONFIG_NAME = requireEnvVar("DTS_TRANSFER_CONFIG_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("DTS_TRANSFER_CONFIG_NAME");
}

@Before
public void setUp() {
bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
originalPrintStream = System.out;
System.setOut(out);
}

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

@Test
public void testScheduleBackFill() throws IOException {
Clock clock = Clock.systemDefaultZone();
Instant instant = clock.instant();
Timestamp startDate =
Timestamp.newBuilder()
.setSeconds(instant.getEpochSecond())
.setNanos(instant.getNano())
.build();
Timestamp endDate =
Timestamp.newBuilder()
.setSeconds(instant.plus(10, ChronoUnit.DAYS).getEpochSecond())
.setNanos(instant.plus(10, ChronoUnit.DAYS).getNano())
.build();
TransferConfig transferConfig =
TransferConfig.newBuilder()
.setName(CONFIG_NAME)
.setScheduleOptions(
ScheduleOptions.newBuilder().setStartTime(startDate).setEndTime(endDate).build())
.build();
FieldMask updateMask = FieldMaskUtil.fromStringList(ImmutableList.of("start_time", "end_time"));
ScheduleBackFill.scheduleBackFill(transferConfig, updateMask);
assertThat(bout.toString()).contains("Schedule backfill updated successfully :");
}
}

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