docs(samples): add storage_quickstart_grpc sample

samples/snippets/src/main/java/com/example/storage/QuickstartGrpcSample.java

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+/*
+ * Copyright 2023 Google Inc.
+ *
+ * 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.storage;
+
+// [START storage_quickstart_grpc]
+// Imports the Google Cloud client library
+import com.google.cloud.storage.Bucket;
+import com.google.cloud.storage.BucketInfo;
+import com.google.cloud.storage.Storage;
+import com.google.cloud.storage.StorageOptions;
+
+public class QuickstartGrpcSample {
+  public static void main(String... args) throws Exception {
+
+    StorageOptions options = StorageOptions.grpc()
+        // When running on GCE, set attemptDirectPath to true for increased performance
+        .setAttemptDirectPath(false)
+        .build();
+
+    // Instantiates a client in a try-with-resource to automatically cleanup underlying resources
+    try (Storage storage = options.getService()) {
+      // The name for the new bucket
+      String bucketName = args[0]; // "my-new-bucket";
+
+      // Creates the new bucket
+      Bucket bucket = storage.create(BucketInfo.of(bucketName));
+
+      System.out.printf("Bucket %s created.%n", bucket.getName());
+    }
+  }
+}
+// [END storage_quickstart_grpc]

samples/snippets/src/test/java/com/example/storage/QuickstartGrpcSampleIT.java

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+/*
+ * Copyright 2015 Google Inc.
+ *
+ * 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.storage;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.cloud.storage.Storage;
+import com.google.cloud.storage.StorageOptions;
+import com.google.cloud.testing.junit4.StdOutCaptureRule;
+import java.util.UUID;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for quickstart sample. */
+@RunWith(JUnit4.class)
+@SuppressWarnings("checkstyle:abbreviationaswordinname")
+public class QuickstartGrpcSampleIT {
+
+  @Rule public final StdOutCaptureRule stdOutCaptureRule = new StdOutCaptureRule();
+
+  private String bucketName;
+
+  private static final void deleteBucket(String bucketName) {
+    Storage storage = StorageOptions.getDefaultInstance().getService();
+    storage.delete(bucketName);
+  }
+
+  @Before
+  public void setUp() {
+    bucketName = "my-new-bucket-" + UUID.randomUUID().toString();
+  }
+
+  @After
+  public void tearDown() {
+    deleteBucket(bucketName);
+  }
+
+  @Test
+  public void testQuickstart() throws Exception {
+    QuickstartGrpcSample.main(bucketName);
+    String got = stdOutCaptureRule.getCapturedOutputAsUtf8String();
+    assertThat(got).contains(String.format("Bucket %s created.", bucketName));
+  }
+}