@Test
public void testLinkToUnversioned() throws Exception {
Log.info(Log.FAC_TEST, "Starting testLinkToUnversioned");
// test dereferencing link to unversioned data.
CCNRepositoryWriter writer = new CCNRepositoryWriter(putHandle);
ContentName unversionedDataName =
testHelper.getTestChildName("testLinkToUnversioned", "UnversionedBigData");
// generate some segmented data; doesn't version the name
writer.newVersion(unversionedDataName, bigDataContent);
Link uvBigDataLink =
new Link(
unversionedDataName,
"big",
new LinkAuthenticator(new PublisherID(putHandle.keyManager().getDefaultKeyID())));
ContentObject bigDataTarget =
uvBigDataLink.dereference(SystemConfiguration.SETTABLE_SHORT_TIMEOUT, getHandle);
Log.info(
Log.FAC_TEST,
"BigData: Dereferenced link "
+ uvBigDataLink
+ ", retrieved content "
+ ((null == bigDataTarget) ? "null" : bigDataTarget.name()));
Assert.assertNotNull(bigDataTarget);
Assert.assertTrue(uvBigDataLink.targetName().isPrefixOf(bigDataTarget.name()));
Assert.assertTrue(SegmentationProfile.isFirstSegment(bigDataTarget.name()));
Log.info(Log.FAC_TEST, "Completed testLinkToUnversioned");
}
@Test
public void testMissingTarget() throws Exception {
Log.info(Log.FAC_TEST, "Starting testMissingTarget");
Link linkToNowhere =
new Link(testHelper.getTestChildName("testMissingTarget", "linkToNowhere"));
ContentObject nothing = linkToNowhere.dereference(SystemConfiguration.SHORT_TIMEOUT, getHandle);
Assert.assertNull(nothing);
Log.info(Log.FAC_TEST, "Completed testMissingTarget");
}
@Test
public void testAutomatedDereferenceForGone() throws Exception {
Log.info(Log.FAC_TEST, "Starting testAutomatedDereferenceForGone");
Link versionedLink = new Link(gone.getVersionedName());
LinkObject versionedLinkObject =
new LinkObject(
testHelper.getTestChildName("testAutomatedDereferenceForGone", "versionedLink"),
versionedLink,
SaveType.REPOSITORY,
putHandle);
versionedLinkObject.save();
TestUtils.checkObject(putHandle, versionedLinkObject);
Link unversionedLink = new Link(gone.getBaseName());
LinkObject unversionedLinkObject =
new LinkObject(
testHelper.getTestChildName("testAutomatedDereferenceForGone", "unversionedLink"),
unversionedLink,
SaveType.REPOSITORY,
putHandle);
unversionedLinkObject.save();
TestUtils.checkObject(putHandle, unversionedLinkObject);
Link twoHopLink = new Link(unversionedLinkObject.getBaseName());
LinkObject twoHopLinkObject =
new LinkObject(
testHelper.getTestChildName("testAutomatedDereferenceForGone", "twoHopLink"),
twoHopLink,
SaveType.REPOSITORY,
putHandle);
twoHopLinkObject.save();
TestUtils.checkObject(putHandle, twoHopLinkObject);
// read via the name iself
CCNStringObject readObjectControl = new CCNStringObject(gone.getBaseName(), null);
Assert.assertEquals(readObjectControl.getVersionedName(), gone.getVersionedName());
Assert.assertTrue(readObjectControl.isGone());
// read via the versioned link.
CCNStringObject versionedReadObject =
new CCNStringObject(versionedLinkObject.getBaseName(), getHandle);
Assert.assertEquals(versionedReadObject.getVersionedName(), gone.getVersionedName());
Assert.assertTrue(versionedReadObject.isGone());
Assert.assertNotNull(versionedReadObject.getDereferencedLink());
Assert.assertEquals(versionedReadObject.getDereferencedLink(), versionedLinkObject);
// read latest version via the unversioned link
CCNStringObject unversionedReadObject =
new CCNStringObject(unversionedLinkObject.getBaseName(), getHandle);
Assert.assertEquals(unversionedReadObject.getVersionedName(), gone.getVersionedName());
Assert.assertTrue(unversionedReadObject.isGone());
Assert.assertNotNull(unversionedReadObject.getDereferencedLink());
Assert.assertEquals(unversionedReadObject.getDereferencedLink(), unversionedLinkObject);
// read via the two-hop link
CCNStringObject twoHopReadObject =
new CCNStringObject(twoHopLinkObject.getBaseName(), getHandle);
Assert.assertEquals(twoHopReadObject.getVersionedName(), gone.getVersionedName());
Assert.assertTrue(twoHopReadObject.isGone());
Assert.assertNotNull(twoHopReadObject.getDereferencedLink());
Assert.assertEquals(twoHopReadObject.getDereferencedLink(), unversionedLinkObject);
Assert.assertNotNull(twoHopReadObject.getDereferencedLink().getDereferencedLink());
Assert.assertEquals(
twoHopReadObject.getDereferencedLink().getDereferencedLink(), twoHopLinkObject);
Log.info(Log.FAC_TEST, "Completed testAutomatedDereferenceForGone");
}
@Test
public void testAutomatedDereferenceForStreams() throws Exception {
Log.info(Log.FAC_TEST, "Starting testAutomatedDereferenceForStreams");
Link bigDataLink =
new Link(
bigData,
"big",
new LinkAuthenticator(new PublisherID(putHandle.keyManager().getDefaultKeyID())));
LinkObject bigDataLinkObject =
new LinkObject(
testHelper.getTestChildName("testAutomatedDereferenceForStreams", "bigDataLink"),
bigDataLink,
SaveType.REPOSITORY,
putHandle);
bigDataLinkObject.save();
TestUtils.checkObject(putHandle, bigDataLinkObject);
Link twoHopLink = new Link(bigDataLinkObject.getBaseName());
LinkObject twoHopLinkObject =
new LinkObject(
testHelper.getTestChildName("testAutomatedDereferenceForStreams", "twoHopLink"),
twoHopLink,
SaveType.REPOSITORY,
putHandle);
twoHopLinkObject.save();
TestUtils.checkObject(putHandle, twoHopLinkObject);
CCNReader reader = new CCNReader(putHandle);
byte[] bigDataReadback =
reader.getVersionedData(
bigDataLinkObject.getVersionedName(), null, SystemConfiguration.getDefaultTimeout());
byte[] bdrdigest = CCNDigestHelper.digest(bigDataReadback);
Log.info(
Log.FAC_TEST,
"Read back big data via link, got "
+ bigDataReadback.length
+ " bytes of an expected "
+ bigDataLength
+ ", digest match? "
+ (0 == DataUtils.compare(bdrdigest, bigValueDigest)));
Assert.assertEquals(bigDataLength, bigDataReadback.length);
Assert.assertArrayEquals(bdrdigest, bigValueDigest);
byte[] bigDataReadback2 =
reader.getVersionedData(
twoHopLinkObject.getBaseName(), null, SystemConfiguration.getDefaultTimeout());
byte[] bdr2digest = CCNDigestHelper.digest(bigDataReadback);
Log.info(
Log.FAC_TEST,
"Read back big data via two links, got "
+ bigDataReadback2.length
+ " bytes of an expected "
+ bigDataLength
+ ", digest match? "
+ (0 == DataUtils.compare(bdr2digest, bigValueDigest)));
Assert.assertEquals(bigDataLength, bigDataReadback2.length);
Assert.assertArrayEquals(bdr2digest, bigValueDigest);
Log.info(Log.FAC_TEST, "Completed testAutomatedDereferenceForStreams");
}