docs(samples): add create aws connection (#163)

samples/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigqueryconnection</artifactId>
-      <version>0.3.1</version>
+      <version>0.4.0</version>
     </dependency>
     <!-- [END bigqueryconnection_install_without_bom] -->
 

samples/snippets/pom.xml

@@ -40,7 +40,7 @@
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigqueryconnection</artifactId>
       <!-- TODO: REMOVE VERSION SPECIFIED BELOW WHEN THE CLIENT GOES GA-->
-      <version>0.3.1</version>
+      <version>0.4.0</version>
     </dependency>
 
     <dependency>

samples/snippets/src/main/java/com/example/bigqueryconnection/CreateAwsConnection.java

@@ -0,0 +1,66 @@
+/*
+ * 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_create_aws_connection]
+import com.google.cloud.bigquery.connection.v1.AwsCrossAccountRole;
+import com.google.cloud.bigquery.connection.v1.AwsProperties;
+import com.google.cloud.bigquery.connection.v1.Connection;
+import com.google.cloud.bigquery.connection.v1.CreateConnectionRequest;
+import com.google.cloud.bigquery.connection.v1.LocationName;
+import com.google.cloud.bigqueryconnection.v1.ConnectionServiceClient;
+import java.io.IOException;
+
+// Sample to create aws connection
+public class CreateAwsConnection {
+
+  public static void main(String[] args) throws IOException {
+    // TODO(developer): Replace these variables before running the sample.
+    String projectId = "MY_PROJECT_ID";
+    // Note: As of now location only supports aws-us-east-1
+    String location = "MY_LOCATION";
+    String connectionId = "MY_CONNECTION_ID";
+    // Example of role id arn:aws:iam::accountId:role/myrole
+    String iamRoleId = "MY_AWS_ROLE_ID";
+    AwsCrossAccountRole role = AwsCrossAccountRole.newBuilder().setIamRoleId(iamRoleId).build();
+    AwsProperties awsProperties = AwsProperties.newBuilder().setCrossAccountRole(role).build();
+    Connection connection = Connection.newBuilder().setAws(awsProperties).build();
+    createAwsConnection(projectId, location, connectionId, connection);
+  }
+
+  public static void createAwsConnection(
+      String projectId, String location, String connectionId, Connection connection)
+      throws IOException {
+    try (ConnectionServiceClient client = ConnectionServiceClient.create()) {
+      LocationName parent = LocationName.of(projectId, location);
+      CreateConnectionRequest request =
+          CreateConnectionRequest.newBuilder()
+              .setParent(parent.toString())
+              .setConnection(connection)
+              .setConnectionId(connectionId)
+              .build();
+      Connection response = client.createConnection(request);
+      AwsCrossAccountRole role = response.getAws().getCrossAccountRole();
+      System.out.println(
+          "Aws connection created successfully : Aws userId :"
+              + role.getIamUserId()
+              + " Aws externalId :"
+              + role.getExternalId());
+    }
+  }
+}
+// [END bigqueryconnection_create_aws_connection]

samples/snippets/src/test/java/com/example/bigqueryconnection/CreateAwsConnectionIT.java

@@ -0,0 +1,92 @@
+/*
+ * 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 com.google.cloud.bigquery.connection.v1.AwsCrossAccountRole;
+import com.google.cloud.bigquery.connection.v1.AwsProperties;
+import com.google.cloud.bigquery.connection.v1.Connection;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+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 CreateAwsConnectionIT {
+
+  private static final Logger LOG = Logger.getLogger(CreateAwsConnectionIT.class.getName());
+  private static final String LOCATION = "aws-us-east-1";
+  private static final String PROJECT_ID = requireEnvVar("GOOGLE_CLOUD_PROJECT");
+  private static final String AWS_ACCOUNT_ID = requireEnvVar("AWS_ACCOUNT_ID");
+  private static final String AWS_ROLE_ID = requireEnvVar("AWS_ROLE_ID");
+
+  private String connectionId;
+  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");
+    requireEnvVar("AWS_ACCOUNT_ID");
+    requireEnvVar("AWS_ROLE_ID");
+  }
+
+  @Before
+  public void setUp() {
+    connectionId = "MY_CONNECTION_TEST_" + UUID.randomUUID().toString().substring(0, 8);
+    bout = new ByteArrayOutputStream();
+    out = new PrintStream(bout);
+    originalPrintStream = System.out;
+    System.setOut(out);
+  }
+
+  @After
+  public void tearDown() throws IOException {
+    // Clean up
+    DeleteConnection.deleteConnection(PROJECT_ID, LOCATION, connectionId);
+    // restores print statements in the original method
+    System.out.flush();
+    System.setOut(originalPrintStream);
+    LOG.log(Level.INFO, bout.toString());
+  }
+
+  @Test
+  public void testCreateAwsConnection() throws IOException {
+    String iamRoleId = String.format("arn:aws:iam::%s:role/%s", AWS_ACCOUNT_ID, AWS_ROLE_ID);
+    AwsCrossAccountRole role = AwsCrossAccountRole.newBuilder().setIamRoleId(iamRoleId).build();
+    AwsProperties awsProperties = AwsProperties.newBuilder().setCrossAccountRole(role).build();
+    Connection connection = Connection.newBuilder().setAws(awsProperties).build();
+    CreateAwsConnection.createAwsConnection(PROJECT_ID, LOCATION, connectionId, connection);
+    assertThat(bout.toString()).contains("Aws connection created successfully :");
+  }
+}