Examples with Versioned org.apache.bookkeeper.versioning.Versioned used on opensource projects

Example 1 with Versioned

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);
}

Example 2 with Versioned

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);
    });
}

Example 3 with Versioned

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;
}

Example 4 with Versioned

use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.

the class SimpleLedgerAllocator method createAllocationData.

private static CompletableFuture<Versioned<byte[]>> createAllocationData(final String allocatePath, final ZooKeeperClient zkc) {
    try {
        final CompletableFuture<Versioned<byte[]>> promise = new CompletableFuture<Versioned<byte[]>>();
        zkc.get().create(allocatePath, DistributedLogConstants.EMPTY_BYTES, zkc.getDefaultACL(), CreateMode.PERSISTENT, new org.apache.zookeeper.AsyncCallback.Create2Callback() {

            @Override
            public void processResult(int rc, String path, Object ctx, String name, Stat stat) {
                if (KeeperException.Code.OK.intValue() == rc) {
                    promise.complete(new Versioned<byte[]>(DistributedLogConstants.EMPTY_BYTES, new LongVersion(stat.getVersion())));
                } else if (KeeperException.Code.NODEEXISTS.intValue() == rc) {
                    FutureUtils.proxyTo(Utils.zkGetData(zkc, allocatePath, false), promise);
                } else {
                    promise.completeExceptionally(Utils.zkException(KeeperException.create(KeeperException.Code.get(rc)), allocatePath));
                }
            }
        }, null);
        return promise;
    } catch (ZooKeeperClient.ZooKeeperConnectionException e) {
        return FutureUtils.exception(Utils.zkException(e, allocatePath));
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
        return FutureUtils.exception(Utils.zkException(e, allocatePath));
    }
}

Example 5 with Versioned

use of org.apache.bookkeeper.versioning.Versioned in project bookkeeper by apache.

the class ListBookiesCommandTest method testListEmptyBookies.

@Test
public void testListEmptyBookies() {
    // 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))));
    CommandRunner runner = createCommandRunner(new ListBookiesCommand());
    assertTrue(runner.runArgs("listbookies"));
    PowerMockito.verifyStatic(CommandHelpers.class, times(0));
    CommandHelpers.getBookieSocketAddrStringRepresentation(any());
}