Java Code Examples for com.microsoft.azure.storage.blob.CloudBlockBlob#createSnapshot()

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Example 1
Source File: FileSasTests.java    From azure-storage-android with Apache License 2.0 4 votes vote down vote up 
@Test
public void testFileCopyFromBlobWithSasAndSnapshot()
        throws URISyntaxException, StorageException, InterruptedException, IOException, InvalidKeyException {
    String blobName = BlobTestHelper.generateRandomBlobNameWithPrefix("testblob");
    CloudBlobContainer container = TestHelper.createCloudBlobClient().getContainerReference(BlobTestHelper.generateRandomContainerName());
    container.createIfNotExists();
    CloudBlockBlob source = container.getBlockBlobReference(blobName);
    String data = "String data";
    source.uploadText(data, Constants.UTF8_CHARSET, null, null, null);

    byte[] buffer = BlobTestHelper.getRandomBuffer(512);
    ByteArrayInputStream stream = new ByteArrayInputStream(buffer);
    source.upload(stream, buffer.length);
    source.getMetadata().put("Test", "value");
    source.uploadMetadata();

    SharedAccessFilePolicy policy = createSharedAccessPolicy(
            EnumSet.of(SharedAccessFilePermissions.READ, SharedAccessFilePermissions.WRITE,
                  SharedAccessFilePermissions.LIST, SharedAccessFilePermissions.DELETE), 5000);

    CloudFile copy = this.share.getRootDirectoryReference().getFileReference("copy");
    String sasToken = copy.generateSharedAccessSignature(policy, null);
    CloudFile copySas = new CloudFile(new URI(copy.getUri().toString() + "?" + sasToken));
    
    // Generate account SAS for the source
    // Cannot generate a SAS directly on a snapshot and the SAS for the destination is only for the destination
    SharedAccessAccountPolicy accountPolicy = new SharedAccessAccountPolicy();
    accountPolicy.setPermissions(EnumSet.of(SharedAccessAccountPermissions.READ, SharedAccessAccountPermissions.WRITE));
    accountPolicy.setServices(EnumSet.of(SharedAccessAccountService.BLOB));
    accountPolicy.setResourceTypes(EnumSet.of(SharedAccessAccountResourceType.OBJECT, SharedAccessAccountResourceType.CONTAINER));
    accountPolicy.setSharedAccessExpiryTime(policy.getSharedAccessExpiryTime());
    final CloudBlobClient sasClient = TestHelper.createCloudBlobClient(accountPolicy, false);

    CloudBlockBlob snapshot = (CloudBlockBlob) source.createSnapshot();
    CloudBlockBlob sasBlob = (CloudBlockBlob) sasClient.getContainerReference(container.getName())
            .getBlobReferenceFromServer(snapshot.getName(), snapshot.getSnapshotID(), null, null, null);
    sasBlob.exists();

    String copyId = copySas.startCopy(BlobTestHelper.defiddler(sasBlob));
    FileTestHelper.waitForCopy(copySas);
    
    copySas.downloadAttributes();
    FileProperties prop1 = copySas.getProperties();
    BlobProperties prop2 = sasBlob.getProperties();

    assertEquals(prop1.getCacheControl(), prop2.getCacheControl());
    assertEquals(prop1.getContentEncoding(), prop2.getContentEncoding());
    assertEquals(prop1.getContentDisposition(),
            prop2.getContentDisposition());
    assertEquals(prop1.getContentLanguage(), prop2.getContentLanguage());
    assertEquals(prop1.getContentMD5(), prop2.getContentMD5());
    assertEquals(prop1.getContentType(), prop2.getContentType());

    assertEquals("value", copySas.getMetadata().get("Test"));
    assertEquals(copyId, copySas.getCopyState().getCopyId());

    snapshot.delete();
    source.delete();
    copySas.delete();
    container.delete();
}