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docs(samples): add create iam policy for table (#975)
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Praful Makani committed Nov 30, 2020
1 parent 07ff507 commit 0cfc98bffc9970d3275cc233d59c621ddbb6aea6
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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_create_iam_policy]
import com.google.cloud.Identity;
import com.google.cloud.Policy;
import com.google.cloud.Role;
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.TableId;

// Sample to create iam policy for table
public class CreateIamPolicy {

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";
createIamPolicy(datasetName, tableName);
}

public static void createIamPolicy(String datasetName, String tableName) {
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();

TableId tableId = TableId.of(datasetName, tableName);

Policy policy = bigquery.getIamPolicy(tableId);
policy
.toBuilder()
.addIdentity(Role.of("roles/bigquery.dataViewer"), Identity.allUsers())
.build();
bigquery.setIamPolicy(tableId, policy);
System.out.println("Iam policy created successfully");
} catch (BigQueryException e) {
System.out.println("Iam policy was not created. \n" + e.toString());
}
}
}
// [END bigquery_create_iam_policy]
@@ -0,0 +1,83 @@
/*
* 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 com.google.cloud.bigquery.Schema;
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 CreateIamPolicyIT {

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() {
bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
originalPrintStream = System.out;
System.setOut(out);

// create a temporary table
tableName = "CREATE_POLICY_TABLE_TEST_" + UUID.randomUUID().toString().substring(0, 8);
CreateTable.createTable(BIGQUERY_DATASET_NAME, tableName, Schema.of());
}

@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 testCreateIamPolicy() {
CreateIamPolicy.createIamPolicy(BIGQUERY_DATASET_NAME, tableName);
assertThat(bout.toString()).contains("Iam policy created successfully");
}
}

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