/**
* If some or all of the children of this name are versions, returns the latest version among
* them.
*
* @return ContentName The latest version component
*/
public ContentName getLatestVersionChildName() {
// of the available names in _children that are version components,
// find the latest one (version-wise)
// names are sorted, so the last one that is a version should be the latest version
// ListIterator previous doesn't work unless you've somehow gotten it to point at the end...
ContentName theName = null;
ContentName latestName = null;
CCNTime latestTimestamp = null;
Iterator<ContentName> it = _children.iterator();
// TODO these are sorted -- we just need to iterate through them in reverse order. Having
// trouble finding something like C++'s reverse iterators to do that (linked list iterators
// can go backwards -- but you have to run them to the end first).
while (it.hasNext()) {
theName = it.next();
if (VersioningProfile.isVersionComponent(theName.component(0))) {
if (null == latestName) {
latestName = theName;
latestTimestamp = VersioningProfile.getVersionComponentAsTimestamp(theName.component(0));
} else {
CCNTime thisTimestamp =
VersioningProfile.getVersionComponentAsTimestamp(theName.component(0));
if (thisTimestamp.after(latestTimestamp)) {
latestName = theName;
latestTimestamp = thisTimestamp;
}
}
}
}
return latestName;
}
@BeforeClass
public static void setUpBeforeClass() throws Exception {
CCNTestBase.setUpBeforeClass();
CCNTime version = new CCNTime();
ContentName stringName = testHelper.getClassChildName(STRING_VALUE_NAME);
for (int i = 0; i < data.length; ++i) {
// save multiple versions of the same object.
data[i] = new CCNStringObject(stringName, "Value " + i, SaveType.REPOSITORY, putHandle);
Log.info(Log.FAC_TEST, "Saving as version " + version);
data[i].save(version);
version.increment(1); // avoid version collisions
}
gone =
new CCNStringObject(
testHelper.getClassChildName(GONE_VALUE_NAME),
GONE_VALUE_NAME,
SaveType.REPOSITORY,
putHandle);
gone.saveAsGone();
TestUtils.checkObject(putHandle, gone);
bigData = testHelper.getClassChildName(BIG_VALUE_NAME);
bigDataContent = new byte[bigDataLength];
Random rand = new Random();
rand.nextBytes(bigDataContent);
bigValueDigest = CCNDigestHelper.digest(bigDataContent);
// generate some segmented data
CCNRepositoryWriter writer = new CCNRepositoryWriter(putHandle);
writer.newVersion(bigData, bigDataContent);
}
/**
* Wait for new children to arrive.
*
* @param timeout Maximum time to wait for new data.
* @return a boolean value that indicates whether new data was found.
* <p>Deprecated - see #getNewData(long)
*/
@Deprecated
public boolean waitForNewChildren(long timeout) {
boolean foundNewData = false;
synchronized (_childLock) {
CCNTime lastUpdate = _lastUpdate;
long timeRemaining = timeout;
long startTime = System.currentTimeMillis();
while (((null == _lastUpdate) || ((null != lastUpdate) && !_lastUpdate.after(lastUpdate)))
&& ((timeout == SystemConfiguration.NO_TIMEOUT) || (timeRemaining > 0))) {
try {
_childLock.wait(
(timeout != SystemConfiguration.NO_TIMEOUT)
? Math.min(timeRemaining, SystemConfiguration.CHILD_WAIT_INTERVAL)
: SystemConfiguration.CHILD_WAIT_INTERVAL);
if (timeout != SystemConfiguration.NO_TIMEOUT) {
timeRemaining = timeout - (System.currentTimeMillis() - startTime);
}
} catch (InterruptedException e) {
}
if (Log.isLoggable(Level.INFO)) {
Log.info(
"Waiting for new data on prefix: {0}, updated {1}, our update {2}, have {3} children {4} new.",
_namePrefix,
_lastUpdate,
lastUpdate,
((null == _children) ? 0 : _children.size()),
((null == _newChildren) ? 0 : _newChildren.size()));
}
}
if ((null != _lastUpdate) && ((null == lastUpdate) || (_lastUpdate.after(lastUpdate))))
foundNewData = true;
}
return foundNewData;
}
public void testDateTime(CCNTime testDateTime) {
String strDateTime = TextXMLCodec.formatDateTime(testDateTime);
System.out.println("DateTime: " + testDateTime + " XML version: " + strDateTime);
CCNTime parsedDateTime = null;
try {
parsedDateTime = TextXMLCodec.parseDateTime(strDateTime);
} catch (ParseException e) {
System.out.println("Exception parsing date time: " + e.getMessage());
e.printStackTrace();
Assert.fail("Failed to parse date time: " + strDateTime);
}
System.out.println("Parsed version: " + parsedDateTime);
if (!parsedDateTime.equals(testDateTime)) {
System.out.println(
"Time : "
+ parsedDateTime
+ "(long: "
+ parsedDateTime.getTime()
+ ") does not equal "
+ testDateTime
+ "(long: "
+ testDateTime.getTime()
+ ")");
}
Assert.assertTrue(parsedDateTime.equals(testDateTime));
}
/**
* Test method for
* org.ccnx.ccn.profiles.VersioningProfile#addVersion(org.ccnx.ccn.protocol.ContentName,
* java.sql.Timestamp).
*/
@Test
public void testVersionNameContentNameTimestamp() {
/* try with length 2 contentname */
CCNTime ts = new CCNTime(1000);
ts.setNanos(15722656);
ContentName name = VersioningProfile.addVersion(abName, ts);
if (!name.equals(abvName)) fail("timestamp encode version failed");
}
@Test
public void testParseDateTime() {
Log.info(Log.FAC_TEST, "Starting testParseDateTime");
CCNTime now = CCNTime.now();
testDateTime(now);
now.setNanos(384);
testDateTime(now);
now.setNanos(1105384);
testDateTime(now);
now.setNanos(550105384);
testDateTime(now);
now.setNanos(550000000);
testDateTime(now);
now.setNanos(953405384);
testDateTime(now);
now.setNanos(110672800);
testDateTime(now);
Log.info(Log.FAC_TEST, "Completed testParseDateTime");
}
@BeforeClass
public static void setUpBeforeClass() throws Exception {
name = new ContentName(baseName, subName, document1);
name2 = new ContentName(baseName, subName, document2);
name3 = new ContentName(baseName, subName, document3);
name4 = ContentName.fromURI("/parc/home/briggs/collaborators.txt");
ns = new ContentName[] {name, name2, name3, name4};
Arrays.fill(contenthash1, (byte) 2);
Arrays.fill(contenthash2, (byte) 4);
Arrays.fill(publisherid1, (byte) 6);
Arrays.fill(publisherid2, (byte) 3);
pubID1 = new PublisherID(publisherid1, PublisherType.KEY);
pubID2 = new PublisherID(publisherid2, PublisherType.ISSUER_KEY);
las[0] = new LinkAuthenticator(pubID1);
las[1] = null;
las[2] = new LinkAuthenticator(pubID2, null, null, SignedInfo.ContentType.DATA, contenthash1);
las[3] = new LinkAuthenticator(pubID1, null, CCNTime.now(), null, contenthash1);
lrs = new Link[4];
for (int i = 0; i < lrs.length; ++i) {
lrs[i] = new Link(ns[i], las[i]);
}
}
/**
* Wait for new children to arrive.
*
* @param timeout Maximum time to wait for new data.
* @param threadPoolContext Are we waiting in threadPoolContext (i.e. other threads can grab
* children first) See #getNewData(boolean, long).
* @return a boolean value that indicates whether new data was found.
*/
public boolean waitForNewChildren(boolean threadPoolContext, long timeout) {
boolean foundNewData = false;
Long id = threadPoolContext ? 0 : Thread.currentThread().getId();
_newChildrenByThread.put(id, new NewChildrenByThread(id));
synchronized (_childLock) {
CCNTime lastUpdate = _lastUpdate;
long timeRemaining = timeout;
long startTime = System.currentTimeMillis();
while (((null == _lastUpdate) || ((null != lastUpdate) && !_lastUpdate.after(lastUpdate)))
&& ((timeout == SystemConfiguration.NO_TIMEOUT) || (timeRemaining > 0))) {
if (_shutdown) break;
try {
_childLock.wait(
(timeout != SystemConfiguration.NO_TIMEOUT)
? Math.min(timeRemaining, SystemConfiguration.CHILD_WAIT_INTERVAL)
: SystemConfiguration.CHILD_WAIT_INTERVAL);
if (timeout != SystemConfiguration.NO_TIMEOUT) {
timeRemaining = timeout - (System.currentTimeMillis() - startTime);
}
} catch (InterruptedException e) {
}
if (Log.isLoggable(Log.FAC_SEARCH, Level.INFO)) {
SortedSet<ContentName> newChildren = _newChildrenByThread.get(id)._newChildren;
Log.info(
Log.FAC_SEARCH,
"Waiting for new data on prefix: {0}, updated {1}, our update {2}, have {3} children {4} new.",
_namePrefix,
_lastUpdate,
lastUpdate,
((null == _children) ? 0 : _children.size()),
((null == newChildren) ? 0 : newChildren.size()));
}
}
if ((null != _lastUpdate) && ((null == lastUpdate) || (_lastUpdate.after(lastUpdate))))
foundNewData = true;
}
return foundNewData;
}
@Test
public void testPaddedVersions() throws Exception {
ContentName name = ContentName.fromNative("/testme");
long v0 = 0x80FFFF;
byte[] b0 = {VersioningProfile.VERSION_MARKER, (byte) 0x80, (byte) 0xFF, (byte) 0xFF};
ContentName vn0 = VersioningProfile.addVersion(name, v0);
byte[] x0 = VersioningProfile.getLastVersionComponent(vn0);
System.out.println("From long name : " + vn0.toString());
Assert.assertTrue(Arrays.areEqual(b0, x0));
// now do it as ccntime
CCNTime t0 = CCNTime.fromBinaryTimeAsLong(v0);
vn0 = VersioningProfile.addVersion(name, t0);
x0 = VersioningProfile.getLastVersionComponent(vn0);
System.out.println("From ccntime name: " + vn0.toString());
Assert.assertTrue(Arrays.areEqual(b0, x0));
}
/** Create a VersionNUmber with the current timestamp from the system clock. */
public VersionNumber() {
_version = CCNTime.now();
_versionComponent = VersioningProfile.timeToVersionComponent(_version);
_binaryTime = _version.toBinaryTimeAsLong();
}
public static VersionNumber now() {
return new VersionNumber(CCNTime.now());
}
/**
* Add (or subtract if negative) #arg from the current version and return a new object. The caller
* should understand that the value is used as an unsigned long.
*
* @return
*/
public VersionNumber addAndReturn(long count) {
long binaryTime = _version.toBinaryTimeAsLong();
binaryTime += count;
return new VersionNumber(CCNTime.fromBinaryTimeAsLong(binaryTime));
}
