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docs(samples): add cancel job (#487)
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Praful Makani committed Jun 26, 2020
1 parent 75c1379 commit fdea80e17bddfc32a4541f240a25de5a3be01ef5
Showing with 118 additions and 0 deletions.
  1. +67 −0 samples/snippets/src/main/java/com/example/bigquery/CancelJob.java
  2. +51 −0 samples/snippets/src/test/java/com/example/bigquery/CancelJobIT.java
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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_cancel_job]
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.Job;
import com.google.cloud.bigquery.JobId;
import com.google.cloud.bigquery.JobInfo;
import com.google.cloud.bigquery.QueryJobConfiguration;
import java.util.UUID;

// Sample to cancel a job
public class CancelJob {

public static void runCancelJob() {
// TODO(developer): Replace these variables before running the sample.
String query = "SELECT country_name from `bigquery-public-data.utility_us.country_code_iso`";
cancelJob(query);
}

public static void cancelJob(String query) {
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();

// Specify a job configuration to set optional job resource properties.
QueryJobConfiguration queryConfig = QueryJobConfiguration.newBuilder(query).build();

// The location and job name are optional,
// if both are not specified then client will auto-create.
String jobName = "jobId_" + UUID.randomUUID().toString();
JobId jobId = JobId.newBuilder().setLocation("us").setJob(jobName).build();

// Create a job with job ID
bigquery.create(JobInfo.of(jobId, queryConfig));

// Get a job that was just created
Job job = bigquery.getJob(jobId);
if (job.cancel()) {
System.out.println("Job canceled successfully");
} else {
System.out.println("Job was not canceled");
}
} catch (BigQueryException e) {
System.out.println("Job was not canceled.\n" + e.toString());
}
}
}
// [END bigquery_cancel_job]
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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;

import static com.google.common.truth.Truth.assertThat;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class CancelJobIT {

private ByteArrayOutputStream bout;
private PrintStream out;

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

@After
public void tearDown() {
System.setOut(null);
}

@Test
public void testCreateJob() {
String query = "SELECT country_name from `bigquery-public-data.utility_us.country_code_iso`";

CancelJob.cancelJob(query);
assertThat(bout.toString()).contains("Job canceled successfully");
}
}

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