use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.
the class Utils method zkGetData.
/**
* Retrieve data from zookeeper <code>path</code>.
*
* @param path
* zookeeper path to retrieve data
* @param watch
* whether to watch the path
* @return future representing the versioned value. null version or null value means path doesn't exist.
*/
public static CompletableFuture<Versioned<byte[]>> zkGetData(ZooKeeper zk, String path, boolean watch) {
final CompletableFuture<Versioned<byte[]>> promise = new CompletableFuture<Versioned<byte[]>>();
zk.getData(path, watch, new AsyncCallback.DataCallback() {
@Override
public void processResult(int rc, String path, Object ctx, byte[] data, Stat stat) {
if (KeeperException.Code.OK.intValue() == rc) {
if (null == stat) {
promise.complete(new Versioned<byte[]>(null, null));
} else {
promise.complete(new Versioned<byte[]>(data, new LongVersion(stat.getVersion())));
}
} else if (KeeperException.Code.NONODE.intValue() == rc) {
promise.complete(new Versioned<byte[]>(null, null));
} else {
promise.completeExceptionally(KeeperException.create(KeeperException.Code.get(rc)));
}
}
}, null);
return promise;
}
use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.
the class ZKLogStreamMetadataStore method renameLogMetadata.
private CompletableFuture<Void> renameLogMetadata(URI uri, LogMetadataForWriter oldMetadata, String newStreamName) {
final LinkedList<Op> createOps = Lists.newLinkedList();
final LinkedList<Op> deleteOps = Lists.newLinkedList();
List<ACL> acls = zooKeeperClient.getDefaultACL();
// get the root path
String oldRootPath = oldMetadata.getLogRootPath();
String newRootPath = LogMetadata.getLogRootPath(uri, newStreamName, conf.getUnpartitionedStreamName());
// 0. the log path
deleteOps.addFirst(Op.delete(LogMetadata.getLogStreamPath(uri, oldMetadata.getLogName()), -1));
// 1. the root path
createOps.addLast(Op.create(newRootPath, EMPTY_BYTES, acls, CreateMode.PERSISTENT));
deleteOps.addFirst(Op.delete(oldRootPath, -1));
// 2. max id
Versioned<byte[]> maxTxIdData = oldMetadata.getMaxTxIdData();
deleteOldPathAndCreateNewPath(oldRootPath, MAX_TXID_PATH, maxTxIdData, newRootPath, DLUtils.serializeTransactionId(0L), acls, createOps, deleteOps);
// 3. version
createOps.addLast(Op.create(newRootPath + VERSION_PATH, intToBytes(LAYOUT_VERSION), acls, CreateMode.PERSISTENT));
deleteOps.addFirst(Op.delete(oldRootPath + VERSION_PATH, -1));
// 4. lock path (NOTE: if the stream is locked by a writer, then the delete will fail as you can not
// delete the lock path if children is not empty.
createOps.addLast(Op.create(newRootPath + LOCK_PATH, EMPTY_BYTES, acls, CreateMode.PERSISTENT));
deleteOps.addFirst(Op.delete(oldRootPath + LOCK_PATH, -1));
// 5. read lock path (NOTE: same reason as the write lock)
createOps.addLast(Op.create(newRootPath + READ_LOCK_PATH, EMPTY_BYTES, acls, CreateMode.PERSISTENT));
deleteOps.addFirst(Op.delete(oldRootPath + READ_LOCK_PATH, -1));
// 6. allocation path
Versioned<byte[]> allocationData = oldMetadata.getAllocationData();
deleteOldPathAndCreateNewPath(oldRootPath, ALLOCATION_PATH, allocationData, newRootPath, EMPTY_BYTES, acls, createOps, deleteOps);
// 7. log segments
Versioned<byte[]> maxLSSNData = oldMetadata.getMaxLSSNData();
deleteOldPathAndCreateNewPath(oldRootPath, LOGSEGMENTS_PATH, maxLSSNData, newRootPath, DLUtils.serializeLogSegmentSequenceNumber(UNASSIGNED_LOGSEGMENT_SEQNO), acls, createOps, deleteOps);
// 8. copy the log segments
CompletableFuture<List<LogSegmentMetadata>> segmentsFuture;
if (pathExists(maxLSSNData)) {
segmentsFuture = getLogSegments(zooKeeperClient, oldRootPath + LOGSEGMENTS_PATH);
} else {
segmentsFuture = FutureUtils.value(Collections.emptyList());
}
return segmentsFuture.thenApply(segments -> {
for (LogSegmentMetadata segment : segments) {
deleteOldSegmentAndCreateNewSegment(segment, newRootPath + LOGSEGMENTS_PATH, acls, createOps, deleteOps);
}
return null;
}).thenCompose(ignored -> getMissingPaths(zooKeeperClient, uri, newStreamName)).thenCompose(paths -> {
for (String path : paths) {
createOps.addFirst(Op.create(path, EMPTY_BYTES, acls, CreateMode.PERSISTENT));
}
return executeRenameTxn(oldRootPath, newRootPath, createOps, deleteOps);
});
}
use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.
the class ZKLogStreamMetadataStore method executeCreateMissingPathTxn.
private static void executeCreateMissingPathTxn(ZooKeeper zk, List<Op> zkOps, List<byte[]> pathsToCreate, List<Versioned<byte[]>> metadatas, String logRootPath, CompletableFuture<List<Versioned<byte[]>>> promise) {
zk.multi(zkOps, new AsyncCallback.MultiCallback() {
@Override
public void processResult(int rc, String path, Object ctx, List<OpResult> resultList) {
if (KeeperException.Code.OK.intValue() == rc) {
List<Versioned<byte[]>> finalMetadatas = Lists.newArrayListWithExpectedSize(metadatas.size());
for (int i = 0; i < pathsToCreate.size(); i++) {
byte[] dataCreated = pathsToCreate.get(i);
if (null == dataCreated) {
finalMetadatas.add(metadatas.get(i));
} else {
finalMetadatas.add(new Versioned<byte[]>(dataCreated, new LongVersion(0)));
}
}
promise.complete(finalMetadatas);
} else if (KeeperException.Code.NODEEXISTS.intValue() == rc) {
promise.completeExceptionally(new LogExistsException("Someone just created log " + logRootPath));
} else {
if (LOG.isDebugEnabled()) {
StringBuilder builder = new StringBuilder();
for (OpResult result : resultList) {
if (result instanceof OpResult.ErrorResult) {
OpResult.ErrorResult errorResult = (OpResult.ErrorResult) result;
builder.append(errorResult.getErr()).append(",");
} else {
builder.append(0).append(",");
}
}
String resultCodeList = builder.substring(0, builder.length() - 1);
LOG.debug("Failed to create log, full rc list = {}", resultCodeList);
}
promise.completeExceptionally(new ZKException("Failed to create log " + logRootPath, KeeperException.Code.get(rc)));
}
}
}, null);
}
use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.
the class ListBookiesCommandTest method testListEmptyBookies.
@Test
public void testListEmptyBookies() throws Exception {
// overwrite regClient to return empty bookies
when(regClient.getWritableBookies()).thenReturn(value(new Versioned<>(Collections.emptySet(), new LongVersion(0L))));
when(regClient.getReadOnlyBookies()).thenReturn(value(new Versioned<>(Collections.emptySet(), new LongVersion(0L))));
ListBookiesCommand cmd = new ListBookiesCommand();
assertTrue(cmd.apply(bkFlags, new String[] { "-rw" }));
getMockedStatic(CommandHelpers.class).verify(() -> CommandHelpers.getBookieSocketAddrStringRepresentation(any(), any()), times(0));
assertTrue(cmd.apply(bkFlags, new String[] { "-ro" }));
getMockedStatic(CommandHelpers.class).verify(() -> CommandHelpers.getBookieSocketAddrStringRepresentation(any(), any()), times(0));
}
use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.
the class ListBookiesCommandTest method setup.
@Before
public void setup() throws Exception {
super.setup();
writableBookies = createBookies(3181, 10);
readonlyBookies = createBookies(4181, 10);
allBookies = new HashSet<>();
allBookies.addAll(writableBookies);
allBookies.addAll(readonlyBookies);
when(regClient.getWritableBookies()).thenReturn(value(new Versioned<>(writableBookies, new LongVersion(0L))));
when(regClient.getBookieServiceInfo(any(BookieId.class))).thenReturn(value(new Versioned<>(BookieServiceInfoUtils.buildLegacyBookieServiceInfo("localhost:1234"), new LongVersion(0))));
when(regClient.getReadOnlyBookies()).thenReturn(value(new Versioned<>(readonlyBookies, new LongVersion(0L))));
when(regClient.getAllBookies()).thenReturn(value(new Versioned<>(allBookies, new LongVersion(0L))));
mockStatic(CommandHelpers.class, withSettings().defaultAnswer(CALLS_REAL_METHODS));
}
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