Examples with Blob com.google.cloud.storage.Blob used on opensource projects

Example 36 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class ITStorageTest method testReadChannelFailUpdatedGeneration.

@Test
public void testReadChannelFailUpdatedGeneration() throws IOException {
    String blobName = "test-read-blob-fail-updated-generation";
    BlobInfo blob = BlobInfo.newBuilder(BUCKET, blobName).build();
    Random random = new Random();
    int chunkSize = 1024;
    int blobSize = 2 * chunkSize;
    byte[] content = new byte[blobSize];
    random.nextBytes(content);
    Blob remoteBlob = storage.create(blob, content);
    assertNotNull(remoteBlob);
    assertEquals(blobSize, (long) remoteBlob.getSize());
    try (ReadChannel reader = storage.reader(blob.getBlobId())) {
        reader.setChunkSize(chunkSize);
        ByteBuffer readBytes = ByteBuffer.allocate(chunkSize);
        int numReadBytes = reader.read(readBytes);
        assertEquals(chunkSize, numReadBytes);
        assertArrayEquals(Arrays.copyOf(content, chunkSize), readBytes.array());
        try (WriteChannel writer = storage.writer(blob)) {
            byte[] newContent = new byte[blobSize];
            random.nextBytes(newContent);
            int numWrittenBytes = writer.write(ByteBuffer.wrap(newContent));
            assertEquals(blobSize, numWrittenBytes);
        }
        readBytes = ByteBuffer.allocate(chunkSize);
        reader.read(readBytes);
        fail("StorageException was expected");
    } catch (StorageException ex) {
        StringBuilder messageBuilder = new StringBuilder();
        messageBuilder.append("Blob ").append(blob.getBlobId()).append(" was updated while reading");
        assertEquals(messageBuilder.toString(), ex.getMessage());
    }
    assertTrue(storage.delete(BUCKET, blobName));
}

Example 37 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class ITStorageTest method testReadChannelFail.

@Test
public void testReadChannelFail() throws IOException {
    String blobName = "test-read-channel-blob-fail";
    BlobInfo blob = BlobInfo.newBuilder(BUCKET, blobName).build();
    Blob remoteBlob = storage.create(blob);
    assertNotNull(remoteBlob);
    try (ReadChannel reader = storage.reader(blob.getBlobId(), Storage.BlobSourceOption.metagenerationMatch(-1L))) {
        reader.read(ByteBuffer.allocate(42));
        fail("StorageException was expected");
    } catch (StorageException ex) {
    // expected
    }
    try (ReadChannel reader = storage.reader(blob.getBlobId(), Storage.BlobSourceOption.generationMatch(-1L))) {
        reader.read(ByteBuffer.allocate(42));
        fail("StorageException was expected");
    } catch (StorageException ex) {
    // expected
    }
    BlobId blobIdWrongGeneration = BlobId.of(BUCKET, blobName, -1L);
    try (ReadChannel reader = storage.reader(blobIdWrongGeneration, Storage.BlobSourceOption.generationMatch())) {
        reader.read(ByteBuffer.allocate(42));
        fail("StorageException was expected");
    } catch (StorageException ex) {
    // expected
    }
    assertTrue(remoteBlob.delete());
}

Example 38 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class ITStorageTest method testGetBlobFail.

@Test
public void testGetBlobFail() {
    String blobName = "test-get-blob-fail";
    BlobInfo blob = BlobInfo.newBuilder(BUCKET, blobName).build();
    Blob remoteBlob = storage.create(blob);
    assertNotNull(remoteBlob);
    BlobId wrongGenerationBlob = BlobId.of(BUCKET, blobName);
    try {
        storage.get(wrongGenerationBlob, Storage.BlobGetOption.generationMatch(-1));
        fail("StorageException was expected");
    } catch (StorageException ex) {
    // expected
    }
    assertTrue(remoteBlob.delete());
}

Example 39 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class ITStorageTest method testListBlobsSelectedFields.

@Test(timeout = 5000)
public void testListBlobsSelectedFields() throws InterruptedException {
    String[] blobNames = { "test-list-blobs-selected-fields-blob1", "test-list-blobs-selected-fields-blob2" };
    ImmutableMap<String, String> metadata = ImmutableMap.of("k", "v");
    BlobInfo blob1 = BlobInfo.newBuilder(BUCKET, blobNames[0]).setContentType(CONTENT_TYPE).setMetadata(metadata).build();
    BlobInfo blob2 = BlobInfo.newBuilder(BUCKET, blobNames[1]).setContentType(CONTENT_TYPE).setMetadata(metadata).build();
    Blob remoteBlob1 = storage.create(blob1);
    Blob remoteBlob2 = storage.create(blob2);
    assertNotNull(remoteBlob1);
    assertNotNull(remoteBlob2);
    Page<Blob> page = storage.list(BUCKET, Storage.BlobListOption.prefix("test-list-blobs-selected-fields-blob"), Storage.BlobListOption.fields(BlobField.METADATA));
    // test fails if timeout is reached.
    while (Iterators.size(page.iterateAll().iterator()) != 2) {
        Thread.sleep(500);
        page = storage.list(BUCKET, Storage.BlobListOption.prefix("test-list-blobs-selected-fields-blob"), Storage.BlobListOption.fields(BlobField.METADATA));
    }
    Set<String> blobSet = ImmutableSet.of(blobNames[0], blobNames[1]);
    Iterator<Blob> iterator = page.iterateAll().iterator();
    while (iterator.hasNext()) {
        Blob remoteBlob = iterator.next();
        assertEquals(BUCKET, remoteBlob.getBucket());
        assertTrue(blobSet.contains(remoteBlob.getName()));
        assertEquals(metadata, remoteBlob.getMetadata());
        assertNull(remoteBlob.getContentType());
    }
    assertTrue(remoteBlob1.delete());
    assertTrue(remoteBlob2.delete());
}

Example 40 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class ITStorageTest method testListBlobsCurrentDirectory.

@Test(timeout = 5000)
public void testListBlobsCurrentDirectory() throws InterruptedException {
    String directoryName = "test-list-blobs-current-directory/";
    String subdirectoryName = "subdirectory/";
    String[] blobNames = { directoryName + subdirectoryName + "blob1", directoryName + "blob2" };
    BlobInfo blob1 = BlobInfo.newBuilder(BUCKET, blobNames[0]).setContentType(CONTENT_TYPE).build();
    BlobInfo blob2 = BlobInfo.newBuilder(BUCKET, blobNames[1]).setContentType(CONTENT_TYPE).build();
    Blob remoteBlob1 = storage.create(blob1, BLOB_BYTE_CONTENT);
    Blob remoteBlob2 = storage.create(blob2, BLOB_BYTE_CONTENT);
    assertNotNull(remoteBlob1);
    assertNotNull(remoteBlob2);
    Page<Blob> page = storage.list(BUCKET, Storage.BlobListOption.prefix("test-list-blobs-current-directory/"), Storage.BlobListOption.currentDirectory());
    // test fails if timeout is reached.
    while (Iterators.size(page.iterateAll().iterator()) != 2) {
        Thread.sleep(500);
        page = storage.list(BUCKET, Storage.BlobListOption.prefix("test-list-blobs-current-directory/"), Storage.BlobListOption.currentDirectory());
    }
    Iterator<Blob> iterator = page.iterateAll().iterator();
    while (iterator.hasNext()) {
        Blob remoteBlob = iterator.next();
        assertEquals(BUCKET, remoteBlob.getBucket());
        if (remoteBlob.getName().equals(blobNames[1])) {
            assertEquals(CONTENT_TYPE, remoteBlob.getContentType());
            assertEquals(BLOB_BYTE_CONTENT.length, (long) remoteBlob.getSize());
            assertFalse(remoteBlob.isDirectory());
        } else if (remoteBlob.getName().equals(directoryName + subdirectoryName)) {
            assertEquals(0L, (long) remoteBlob.getSize());
            assertTrue(remoteBlob.isDirectory());
        } else {
            fail("Unexpected blob with name " + remoteBlob.getName());
        }
    }
    assertTrue(remoteBlob1.delete());
    assertTrue(remoteBlob2.delete());
}