/**
* Create a snapshot
*
* @throws StorageException
* @throws URISyntaxException
* @throws IOException
* @throws InterruptedException
*/
@Test
public void testPageBlobSnapshotValidationTest()
throws StorageException, URISyntaxException, IOException {
final int length = 1024;
CloudPageBlob blockBlobRef =
(CloudPageBlob)
BlobTestHelper.uploadNewBlob(
this.container, BlobType.PAGE_BLOB, "originalBlob", length, null);
final CloudBlob blobSnapshot = blockBlobRef.createSnapshot();
for (ListBlobItem blob :
this.container.listBlobs(null, true, EnumSet.allOf(BlobListingDetails.class), null, null)) {
final ByteArrayOutputStream outStream = new ByteArrayOutputStream(length);
((CloudBlob) blob).download(outStream);
}
ByteArrayOutputStream outStream = new ByteArrayOutputStream(length);
blobSnapshot.download(outStream);
byte[] retrievedBuff = outStream.toByteArray();
assertEquals(length, retrievedBuff.length);
// Read operation should work fine.
blobSnapshot.downloadAttributes();
final CloudPageBlob blobSnapshotUsingRootUri =
this.container.getPageBlobReference(blockBlobRef.getName(), blobSnapshot.getSnapshotID());
outStream = new ByteArrayOutputStream(length);
blobSnapshotUsingRootUri.download(outStream);
retrievedBuff = outStream.toByteArray();
assertEquals(length, retrievedBuff.length);
assertEquals(blobSnapshot.getSnapshotID(), blobSnapshotUsingRootUri.getSnapshotID());
// Expect an IllegalArgumentException from upload.
try {
final Random randGenerator = new Random();
final byte[] buff = new byte[length];
randGenerator.nextBytes(buff);
blobSnapshot.upload(new ByteArrayInputStream(buff), -1);
fail("Expect an IllegalArgumentException from upload");
} catch (IllegalArgumentException e) {
assertEquals(
"Cannot perform this operation on a blob representing a snapshot.", e.getMessage());
}
// Expect an IllegalArgumentException from uploadMetadata.
try {
blobSnapshot.uploadMetadata();
fail("Expect an IllegalArgumentException from uploadMetadata");
} catch (IllegalArgumentException e) {
assertEquals(
"Cannot perform this operation on a blob representing a snapshot.", e.getMessage());
}
// Expect an IllegalArgumentException from uploadProperties.
try {
blobSnapshot.uploadProperties();
fail("Expect an IllegalArgumentException from uploadProperties");
} catch (IllegalArgumentException e) {
assertEquals(
"Cannot perform this operation on a blob representing a snapshot.", e.getMessage());
}
// Expect an IllegalArgumentException from createSnapshot.
try {
blobSnapshot.createSnapshot();
fail("Expect an IllegalArgumentException from createSnapshot");
} catch (IllegalArgumentException e) {
assertEquals(
"Cannot perform this operation on a blob representing a snapshot.", e.getMessage());
}
}
@Test
public void testPageBlobCopyFromSnapshot()
throws StorageException, IOException, URISyntaxException, InterruptedException {
CloudPageBlob source = this.container.getPageBlobReference("source");
byte[] buffer = BlobTestHelper.getRandomBuffer(512);
ByteArrayInputStream stream = new ByteArrayInputStream(buffer);
source.upload(stream, buffer.length);
source.getMetadata().put("Test", "value");
source.uploadMetadata();
CloudPageBlob snapshot = (CloudPageBlob) source.createSnapshot();
// Modify source
byte[] buffer2 = BlobTestHelper.getRandomBuffer(512);
ByteArrayInputStream stream2 = new ByteArrayInputStream(buffer2);
source.getMetadata().put("Test", "newvalue");
source.uploadMetadata();
source.getProperties().setContentMD5(null);
source.upload(stream2, buffer.length);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
source.download(outputStream);
ByteArrayOutputStream snapshotStream = new ByteArrayOutputStream();
snapshot.download(snapshotStream);
BlobTestHelper.assertStreamsAreEqual(
stream2, new ByteArrayInputStream(outputStream.toByteArray()));
BlobTestHelper.assertStreamsAreEqual(
stream, new ByteArrayInputStream(snapshotStream.toByteArray()));
source.downloadAttributes();
snapshot.downloadAttributes();
assertFalse(source.getMetadata().get("Test").equals(snapshot.getMetadata().get("Test")));
CloudPageBlob copy = this.container.getPageBlobReference("copy");
String copyId = copy.startCopy(BlobTestHelper.defiddler(snapshot));
BlobTestHelper.waitForCopy(copy);
ByteArrayOutputStream copyStream = new ByteArrayOutputStream();
copy.download(copyStream);
assertEquals(CopyStatus.SUCCESS, copy.getCopyState().getStatus());
BlobTestHelper.assertStreamsAreEqual(
stream, new ByteArrayInputStream(copyStream.toByteArray()));
assertEquals(copyId, copy.getProperties().getCopyState().getCopyId());
copy.downloadAttributes();
BlobProperties prop1 = copy.getProperties();
BlobProperties prop2 = snapshot.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", copy.getMetadata().get("Test"));
copy.delete();
}