@Test
public void testReadAndWriteCaptureChannels() throws IOException {
String blobName = "test-read-and-write-capture-channels-blob";
BlobInfo blob = BlobInfo.builder(BUCKET, blobName).build();
byte[] stringBytes;
BlobWriteChannel writer = storage.writer(blob);
stringBytes = BLOB_STRING_CONTENT.getBytes(UTF_8);
writer.write(ByteBuffer.wrap(BLOB_BYTE_CONTENT));
RestorableState<BlobWriteChannel> writerState = writer.capture();
BlobWriteChannel secondWriter = writerState.restore();
secondWriter.write(ByteBuffer.wrap(stringBytes));
secondWriter.close();
ByteBuffer readBytes;
ByteBuffer readStringBytes;
BlobReadChannel reader = storage.reader(blob.blobId());
reader.chunkSize(BLOB_BYTE_CONTENT.length);
readBytes = ByteBuffer.allocate(BLOB_BYTE_CONTENT.length);
reader.read(readBytes);
RestorableState<BlobReadChannel> readerState = reader.capture();
BlobReadChannel secondReader = readerState.restore();
readStringBytes = ByteBuffer.allocate(stringBytes.length);
secondReader.read(readStringBytes);
reader.close();
secondReader.close();
assertArrayEquals(BLOB_BYTE_CONTENT, readBytes.array());
assertEquals(BLOB_STRING_CONTENT, new String(readStringBytes.array(), UTF_8));
assertTrue(storage.delete(BUCKET, blobName));
}
@Test
public void testReadChannelFail() throws IOException {
String blobName = "test-read-channel-blob-fail";
BlobInfo blob = BlobInfo.builder(BUCKET, blobName).build();
assertNotNull(storage.create(blob));
try (BlobReadChannel reader =
storage.reader(blob.blobId(), Storage.BlobSourceOption.metagenerationMatch(-1L))) {
reader.read(ByteBuffer.allocate(42));
fail("StorageException was expected");
} catch (StorageException ex) {
// expected
}
assertTrue(storage.delete(BUCKET, blobName));
}
@Test
public void testReadAndWriteChannels() throws IOException {
String blobName = "test-read-and-write-channels-blob";
BlobInfo blob = BlobInfo.builder(BUCKET, blobName).build();
byte[] stringBytes;
try (BlobWriteChannel writer = storage.writer(blob)) {
stringBytes = BLOB_STRING_CONTENT.getBytes(UTF_8);
writer.write(ByteBuffer.wrap(BLOB_BYTE_CONTENT));
writer.write(ByteBuffer.wrap(stringBytes));
}
ByteBuffer readBytes;
ByteBuffer readStringBytes;
try (BlobReadChannel reader = storage.reader(blob.blobId())) {
readBytes = ByteBuffer.allocate(BLOB_BYTE_CONTENT.length);
readStringBytes = ByteBuffer.allocate(stringBytes.length);
reader.read(readBytes);
reader.read(readStringBytes);
}
assertArrayEquals(BLOB_BYTE_CONTENT, readBytes.array());
assertEquals(BLOB_STRING_CONTENT, new String(readStringBytes.array(), UTF_8));
assertTrue(storage.delete(BUCKET, blobName));
}
