Storage : Fix manage resumeable signedURL uploads.

google-cloud-clients/google-cloud-contrib/google-cloud-nio/src/main/java/com/google/cloud/storage/contrib/nio/testing/FakeStorageRpc.java

@@ -312,6 +312,11 @@ public String open(StorageObject object, Map<Option, ?> options) throws StorageE
     return fullname(object);
   }
 
+  @Override
+  public String open(String signedURL) {
+    return null;
+  }
+
   @Override
   public void write(
       String uploadId, byte[] toWrite, int toWriteOffset, long destOffset, int length, boolean last)

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/BlobWriteChannel.java

@@ -24,6 +24,7 @@
 import com.google.cloud.RetryHelper;
 import com.google.cloud.WriteChannel;
 import com.google.cloud.storage.spi.v1.StorageRpc;
+import java.net.URL;
 import java.util.Map;
 import java.util.concurrent.Callable;
 
@@ -34,10 +35,18 @@ class BlobWriteChannel extends BaseWriteChannel<StorageOptions, BlobInfo> {
     this(options, blob, open(options, blob, optionsMap));
   }
 
+  BlobWriteChannel(StorageOptions options, URL signedURL) {
+    this(options, open(signedURL, options));
+  }
+
   BlobWriteChannel(StorageOptions options, BlobInfo blobInfo, String uploadId) {
     super(options, blobInfo, uploadId);
   }
 
+  BlobWriteChannel(StorageOptions options, String uploadId) {
+    super(options, null, uploadId);
+  }
+
   @Override
   protected void flushBuffer(final int length, final boolean last) {
     try {
@@ -83,6 +92,46 @@ public String call() {
     }
   }
 
+  private static String open(final URL signedURL, final StorageOptions options) {
+    try {
+      return runWithRetries(
+          new Callable<String>() {
+            @Override
+            public String call() {
+              if (!isValidSignedURL(signedURL.getQuery())) {
+                throw new StorageException(2, "invalid signedURL");
+              }
+              return options.getStorageRpcV1().open(signedURL.toString());
+            }
+          },
+          options.getRetrySettings(),
+          StorageImpl.EXCEPTION_HANDLER,
+          options.getClock());
+    } catch (RetryHelper.RetryHelperException e) {
+      throw StorageException.translateAndThrow(e);
+    }
+  }
+
+  private static boolean isValidSignedURL(String signedURLQuery) {
+    boolean isValid = true;
+    if (signedURLQuery.startsWith("X-Goog-Algorithm=")) {
+      if (!signedURLQuery.contains("&X-Goog-Credential=")
+          || !signedURLQuery.contains("&X-Goog-Date=")
+          || !signedURLQuery.contains("&X-Goog-Expires=")
+          || !signedURLQuery.contains("&X-Goog-SignedHeaders=")
+          || !signedURLQuery.contains("&X-Goog-Signature=")) {
+        isValid = false;
+      }
+    } else if (signedURLQuery.startsWith("GoogleAccessId=")) {
+      if (!signedURLQuery.contains("&Expires=") || !signedURLQuery.contains("&Signature=")) {
+        isValid = false;
+      }
+    } else {
+      isValid = false;
+    }
+    return isValid;
+  }
+
   static class StateImpl extends BaseWriteChannel.BaseState<StorageOptions, BlobInfo> {
 
     private static final long serialVersionUID = -9028324143780151286L;

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/Storage.java

@@ -2068,6 +2068,27 @@ Blob create(
    */
   WriteChannel writer(BlobInfo blobInfo, BlobWriteOption... options);
 
+  /**
+   * Accepts signed URL and return a channel for writing content.
+   *
+   * <p>Example of writing content through a writer using signed URL.
+   *
+   * <pre>{@code
+   * String bucketName = "my_unique_bucket";
+   * String blobName = "my_blob_name";
+   * BlobId blobId = BlobId.of(bucketName, blobName);
+   * byte[] content = "Hello, World!".getBytes(UTF_8);
+   * BlobInfo blobInfo = BlobInfo.newBuilder(blobId).setContentType("text/plain").build();
+   * URL signedURL = storage.signUrl(blobInfo, 1, TimeUnit.HOURS, Storage.SignUrlOption.httpMethod(HttpMethod.POST));
+   * try (WriteChannel writer = storage.writer(signedURL)) {
+   *    writer.write(ByteBuffer.wrap(content, 0, content.length));
+   * }
+   * }</pre>
+   *
+   * @throws StorageException upon failure
+   */
+  WriteChannel writer(URL signedURL);
+
   /**
    * Generates a signed URL for a blob. If you have a blob that you want to allow access to for a
    * fixed amount of time, you can use this method to generate a URL that is only valid within a

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/StorageImpl.java

@@ -598,6 +598,11 @@ public BlobWriteChannel writer(BlobInfo blobInfo, BlobWriteOption... options) {
     return writer(targetOptions.x(), targetOptions.y());
   }
 
+  @Override
+  public BlobWriteChannel writer(URL signedURL) {
+    return new BlobWriteChannel(getOptions(), signedURL);
+  }
+
   private BlobWriteChannel writer(BlobInfo blobInfo, BlobTargetOption... options) {
     final Map<StorageRpc.Option, ?> optionsMap = optionMap(blobInfo, options);
     return new BlobWriteChannel(getOptions(), blobInfo, optionsMap);

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/spi/v1/HttpStorageRpc.java

@@ -822,6 +822,39 @@ public String open(StorageObject object, Map<Option, ?> options) {
     }
   }
 
+  @Override
+  public String open(String signedURL) {
+    Span span = startSpan(HttpStorageRpcSpans.SPAN_NAME_OPEN);
+    Scope scope = tracer.withSpan(span);
+    try {
+      GenericUrl url = new GenericUrl(signedURL);
+      url.set("uploadType", "resumable");
+      String bytesArrayParameters = "";
+      byte[] bytesArray = new byte[bytesArrayParameters.length()];
+      HttpRequestFactory requestFactory = storage.getRequestFactory();
+      HttpRequest httpRequest =
+          requestFactory.buildPostRequest(
+              url, new ByteArrayContent("", bytesArray, 0, bytesArray.length));
+      HttpHeaders requestHeaders = httpRequest.getHeaders();
+      requestHeaders.set("X-Upload-Content-Type", "");
+      requestHeaders.set("x-goog-resumable", "start");
+      HttpResponse response = httpRequest.execute();
+      if (response.getStatusCode() != 201) {
+        GoogleJsonError error = new GoogleJsonError();
+        error.setCode(response.getStatusCode());
+        error.setMessage(response.getStatusMessage());
+        throw translate(error);
+      }
+      return response.getHeaders().getLocation();
+    } catch (IOException ex) {
+      span.setStatus(Status.UNKNOWN.withDescription(ex.getMessage()));
+      throw translate(ex);
+    } finally {
+      scope.close();
+      span.end();
+    }
+  }
+
   @Override
   public RewriteResponse openRewrite(RewriteRequest rewriteRequest) {
     Span span = startSpan(HttpStorageRpcSpans.SPAN_NAME_OPEN_REWRITE);

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/spi/v1/StorageRpc.java

@@ -289,6 +289,13 @@ StorageObject compose(
    */
   String open(StorageObject object, Map<Option, ?> options);
 
+  /**
+   * Opens a resumable upload channel for a given signedURL.
+   *
+   * @throws StorageException upon failure
+   */
+  String open(String signedURL);
+
   /**
    * Writes the provided bytes to a storage object at the provided location.
    *

google-cloud-clients/google-cloud-storage/src/test/java/com/google/cloud/storage/BlobWriteChannelTest.java

@@ -36,7 +36,9 @@
 import com.google.cloud.storage.spi.v1.StorageRpc;
 import com.google.common.collect.ImmutableMap;
 import java.io.IOException;
+import java.net.MalformedURLException;
 import java.net.SocketException;
+import java.net.URL;
 import java.nio.ByteBuffer;
 import java.util.Arrays;
 import java.util.Map;
@@ -60,6 +62,8 @@ public class BlobWriteChannelTest {
   private static final int DEFAULT_CHUNK_SIZE = 8 * MIN_CHUNK_SIZE;
   private static final int CUSTOM_CHUNK_SIZE = 4 * MIN_CHUNK_SIZE;
   private static final Random RANDOM = new Random();
+  private static final String SIGNED_URL =
+      "http://www.test.com/test-bucket/[email protected]&Expires=1553839761&Signature=MJUBXAZ7";
 
   @Rule public ExpectedException thrown = ExpectedException.none();
 
@@ -265,6 +269,133 @@ public void testStateEquals() {
     assertEquals(state.toString(), state2.toString());
   }
 
+  @Test
+  public void testWriteWithSignedURLAndWithoutFlush() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    replay(storageRpcMock);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    assertEquals(MIN_CHUNK_SIZE, writer.write(ByteBuffer.allocate(MIN_CHUNK_SIZE)));
+  }
+
+  @Test
+  public void testWriteWithSignedURLAndWithFlush() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    Capture<byte[]> capturedBuffer = Capture.newInstance();
+    storageRpcMock.write(
+        eq(UPLOAD_ID), capture(capturedBuffer), eq(0), eq(0L), eq(CUSTOM_CHUNK_SIZE), eq(false));
+    replay(storageRpcMock);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    writer.setChunkSize(CUSTOM_CHUNK_SIZE);
+    ByteBuffer buffer = randomBuffer(CUSTOM_CHUNK_SIZE);
+    assertEquals(CUSTOM_CHUNK_SIZE, writer.write(buffer));
+    assertArrayEquals(buffer.array(), capturedBuffer.getValue());
+  }
+
+  @Test
+  public void testWriteWithSignedURLAndFlush() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    Capture<byte[]> capturedBuffer = Capture.newInstance();
+    storageRpcMock.write(
+        eq(UPLOAD_ID), capture(capturedBuffer), eq(0), eq(0L), eq(DEFAULT_CHUNK_SIZE), eq(false));
+    replay(storageRpcMock);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    ByteBuffer[] buffers = new ByteBuffer[DEFAULT_CHUNK_SIZE / MIN_CHUNK_SIZE];
+    for (int i = 0; i < buffers.length; i++) {
+      buffers[i] = randomBuffer(MIN_CHUNK_SIZE);
+      assertEquals(MIN_CHUNK_SIZE, writer.write(buffers[i]));
+    }
+    for (int i = 0; i < buffers.length; i++) {
+      assertArrayEquals(
+          buffers[i].array(),
+          Arrays.copyOfRange(
+              capturedBuffer.getValue(), MIN_CHUNK_SIZE * i, MIN_CHUNK_SIZE * (i + 1)));
+    }
+  }
+
+  @Test
+  public void testCloseWithSignedURLWithoutFlush() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    Capture<byte[]> capturedBuffer = Capture.newInstance();
+    storageRpcMock.write(eq(UPLOAD_ID), capture(capturedBuffer), eq(0), eq(0L), eq(0), eq(true));
+    replay(storageRpcMock);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    assertTrue(writer.isOpen());
+    writer.close();
+    assertArrayEquals(new byte[0], capturedBuffer.getValue());
+    assertTrue(!writer.isOpen());
+  }
+
+  @Test
+  public void testCloseWithSignedURLWithFlush() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    Capture<byte[]> capturedBuffer = Capture.newInstance();
+    ByteBuffer buffer = randomBuffer(MIN_CHUNK_SIZE);
+    storageRpcMock.write(
+        eq(UPLOAD_ID), capture(capturedBuffer), eq(0), eq(0L), eq(MIN_CHUNK_SIZE), eq(true));
+    replay(storageRpcMock);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    assertTrue(writer.isOpen());
+    writer.write(buffer);
+    writer.close();
+    assertEquals(DEFAULT_CHUNK_SIZE, capturedBuffer.getValue().length);
+    assertArrayEquals(buffer.array(), Arrays.copyOf(capturedBuffer.getValue(), MIN_CHUNK_SIZE));
+    assertTrue(!writer.isOpen());
+  }
+
+  @Test
+  public void testWriteWithSignedURLClosed() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    Capture<byte[]> capturedBuffer = Capture.newInstance();
+    storageRpcMock.write(eq(UPLOAD_ID), capture(capturedBuffer), eq(0), eq(0L), eq(0), eq(true));
+    replay(storageRpcMock);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    writer.close();
+    try {
+      writer.write(ByteBuffer.allocate(MIN_CHUNK_SIZE));
+      fail("Expected BlobWriteChannel write to throw IOException");
+    } catch (IOException ex) {
+      // expected
+    }
+  }
+
+  @Test
+  public void testSaveAndRestoreWithSignedURL() throws IOException {
+    expect(storageRpcMock.open(SIGNED_URL)).andReturn(UPLOAD_ID);
+    Capture<byte[]> capturedBuffer = Capture.newInstance(CaptureType.ALL);
+    Capture<Long> capturedPosition = Capture.newInstance(CaptureType.ALL);
+    storageRpcMock.write(
+        eq(UPLOAD_ID),
+        capture(capturedBuffer),
+        eq(0),
+        captureLong(capturedPosition),
+        eq(DEFAULT_CHUNK_SIZE),
+        eq(false));
+    expectLastCall().times(2);
+    replay(storageRpcMock);
+    ByteBuffer buffer1 = randomBuffer(DEFAULT_CHUNK_SIZE);
+    ByteBuffer buffer2 = randomBuffer(DEFAULT_CHUNK_SIZE);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    assertEquals(DEFAULT_CHUNK_SIZE, writer.write(buffer1));
+    assertArrayEquals(buffer1.array(), capturedBuffer.getValues().get(0));
+    assertEquals(new Long(0L), capturedPosition.getValues().get(0));
+    RestorableState<WriteChannel> writerState = writer.capture();
+    WriteChannel restoredWriter = writerState.restore();
+    assertEquals(DEFAULT_CHUNK_SIZE, restoredWriter.write(buffer2));
+    assertArrayEquals(buffer2.array(), capturedBuffer.getValues().get(1));
+    assertEquals(new Long(DEFAULT_CHUNK_SIZE), capturedPosition.getValues().get(1));
+  }
+
+  @Test
+  public void testRuntimeExceptionWithSignedURL() throws MalformedURLException {
+    String exceptionMessage = "invalid signedURL";
+    expect(new BlobWriteChannel(options, new URL(SIGNED_URL)))
+        .andThrow(new RuntimeException(exceptionMessage));
+    replay(storageRpcMock);
+    thrown.expect(StorageException.class);
+    thrown.expectMessage(exceptionMessage);
+    writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+  }
+
   private static ByteBuffer randomBuffer(int size) {
     byte[] byteArray = new byte[size];
     RANDOM.nextBytes(byteArray);

google-cloud-clients/google-cloud-storage/src/test/java/com/google/cloud/storage/StorageImplTest.java

@@ -59,6 +59,7 @@
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLDecoder;
 import java.nio.ByteBuffer;
@@ -319,6 +320,9 @@ public class StorageImplTest {
           + "EkPPhszldvQTY486uPxyD/D7HdfnGW/Nbw5JUhfvecAdudDEhNAQ3PNabyDMI+TpiHy4NTWOrgdcWrzj6VXcdc"
           + "+uuABnPwRCdcyJ1xl2kOrPksRnp1auNGMLOe4IpEBjGY7baX9UG8+A45MbG0aHmkR59Op/aR9XowIDAQAB";
 
+  private static final String SIGNED_URL =
+      "http://www.test.com/test-bucket/[email protected]&Expires=1553839761&Signature=MJUBXAZ7";
+
   private static final ApiClock TIME_SOURCE =
       new ApiClock() {
         @Override
@@ -2835,4 +2839,14 @@ public void testRuntimeException() {
     thrown.expectMessage(exceptionMessage);
     storage.get(blob);
   }
+
+  @Test
+  public void testWriterWithSignedURL() throws MalformedURLException {
+    EasyMock.expect(storageRpcMock.open(SIGNED_URL)).andReturn("upload-id");
+    EasyMock.replay(storageRpcMock);
+    initializeService();
+    WriteChannel writer = new BlobWriteChannel(options, new URL(SIGNED_URL));
+    assertNotNull(writer);
+    assertTrue(writer.isOpen());
+  }
 }

google-cloud-clients/google-cloud-storage/src/test/java/com/google/cloud/storage/it/ITStorageTest.java

@@ -2542,4 +2542,28 @@ public void testEnableAndDisableBucketPolicyOnlyOnExistingBucket() throws Except
       RemoteStorageHelper.forceDelete(storage, bpoBucket, 1, TimeUnit.MINUTES);
     }
   }
+
+  @Test
+  public void testUploadUsingSignedURL() throws Exception {
+    String blobName = "test-signed-url-upload";
+    BlobInfo blob = BlobInfo.newBuilder(BUCKET, blobName).build();
+    assertNotNull(storage.create(blob));
+    URL signUrl =
+        storage.signUrl(blob, 1, TimeUnit.HOURS, Storage.SignUrlOption.httpMethod(HttpMethod.POST));
+    byte[] bytesArrayToUpload = BLOB_STRING_CONTENT.getBytes();
+    try (WriteChannel writer = storage.writer(signUrl)) {
+      writer.write(ByteBuffer.wrap(bytesArrayToUpload, 0, bytesArrayToUpload.length));
+    }
+
+    int lengthOfDownLoadBytes = -1;
+    BlobId blobId = BlobId.of(BUCKET, blobName);
+    Blob blobToRead = storage.get(blobId);
+    try (ReadChannel reader = blobToRead.reader()) {
+      ByteBuffer bytes = ByteBuffer.allocate(64 * 1024);
+      lengthOfDownLoadBytes = reader.read(bytes);
+    }
+
+    assertEquals(bytesArrayToUpload.length, lengthOfDownLoadBytes);
+    assertTrue(storage.delete(BUCKET, blobName));
+  }
 }