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docs(samples): add quick start (#143)
* docs(samples): add quick start

* docs(samples): modify code
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Praful Makani committed Sep 28, 2020
1 parent da26519 commit 78bf38bccc58765dc2dc4efb7864d07218bbd783
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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.bigqueryconnection;

// [START bigqueryconnection_quickstart]
import com.google.cloud.bigquery.connection.v1.ListConnectionsRequest;
import com.google.cloud.bigquery.connection.v1.LocationName;
import com.google.cloud.bigqueryconnection.v1.ConnectionServiceClient;
import java.io.IOException;

// Sample to demonstrates basic usage of the BigQuery connection API.
public class QuickstartSample {

public static void main(String[] args) throws IOException {
// TODO(developer): Replace these variables before running the sample.
String projectId = "MY_PROJECT_ID";
String location = "MY_LOCATION";
listConnections(projectId, location);
}

public static void listConnections(String projectId, String location) throws IOException {
try (ConnectionServiceClient connectionServiceClient = ConnectionServiceClient.create()) {
LocationName parent = LocationName.of(projectId, location);
int pageSize = 10;
ListConnectionsRequest request =
ListConnectionsRequest.newBuilder()
.setParent(parent.toString())
.setPageSize(pageSize)
.build();
ConnectionServiceClient.ListConnectionsPagedResponse response =
connectionServiceClient.listConnections(request);

// Print the results.
System.out.println("List of connections:");
response
.iterateAll()
.forEach(connection -> System.out.println("Connection Name: " + connection.getName()));
}
}
}
// [END bigqueryconnection_quickstart]
@@ -0,0 +1,75 @@
/*
* 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.bigqueryconnection;

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

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;

public class QuickstartSampleIT {

private static final Logger LOG = Logger.getLogger(QuickstartSampleIT.class.getName());
private static final String PROJECT_ID = System.getenv("GOOGLE_CLOUD_PROJECT");

private ByteArrayOutputStream bout;
private PrintStream out;
private PrintStream originalPrintStream;

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("GOOGLE_CLOUD_PROJECT");
}

@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 testQuickstart() throws IOException {
QuickstartSample.listConnections(PROJECT_ID, "US");
assertThat(bout.toString()).contains("List of connections:");
}
}

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