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docs(samples): add cancel job (#487)
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Praful Makani
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Jun 26, 2020
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samples/snippets/src/main/java/com/example/bigquery/CancelJob.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. | ||
*/ | ||
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package com.example.bigquery; | ||
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// [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; | ||
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// Sample to cancel a job | ||
public class CancelJob { | ||
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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); | ||
} | ||
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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(); | ||
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// Specify a job configuration to set optional job resource properties. | ||
QueryJobConfiguration queryConfig = QueryJobConfiguration.newBuilder(query).build(); | ||
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// 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(); | ||
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// Create a job with job ID | ||
bigquery.create(JobInfo.of(jobId, queryConfig)); | ||
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// 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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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. | ||
*/ | ||
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package com.example.bigquery; | ||
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import static com.google.common.truth.Truth.assertThat; | ||
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import java.io.ByteArrayOutputStream; | ||
import java.io.PrintStream; | ||
import org.junit.After; | ||
import org.junit.Before; | ||
import org.junit.Test; | ||
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public class CancelJobIT { | ||
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private ByteArrayOutputStream bout; | ||
private PrintStream out; | ||
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@Before | ||
public void setUp() { | ||
bout = new ByteArrayOutputStream(); | ||
out = new PrintStream(bout); | ||
System.setOut(out); | ||
} | ||
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@After | ||
public void tearDown() { | ||
System.setOut(null); | ||
} | ||
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@Test | ||
public void testCreateJob() { | ||
String query = "SELECT country_name from `bigquery-public-data.utility_us.country_code_iso`"; | ||
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CancelJob.cancelJob(query); | ||
assertThat(bout.toString()).contains("Job canceled successfully"); | ||
} | ||
} |