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

Example 56 with LongVersion

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

the class LedgerAllocatorPool method initializeAllocators.

/**
 * Initialize simple allocators with given list of allocator names <i>allocators</i>.
 * It initializes a simple allocator with its simple allocator path.
 */
private void initializeAllocators(List<String> allocators) throws IOException, InterruptedException {
    final AtomicInteger numPendings = new AtomicInteger(allocators.size());
    final AtomicInteger numFailures = new AtomicInteger(0);
    final CountDownLatch latch = new CountDownLatch(numPendings.get() > 0 ? 1 : 0);
    AsyncCallback.DataCallback dataCallback = new AsyncCallback.DataCallback() {

        @Override
        public void processResult(int rc, String path, Object ctx, byte[] data, Stat stat) {
            if (KeeperException.Code.OK.intValue() != rc) {
                numFailures.incrementAndGet();
                latch.countDown();
                return;
            }
            Versioned<byte[]> allocatorData = new Versioned<byte[]>(data, new LongVersion(stat.getVersion()));
            SimpleLedgerAllocator allocator = new SimpleLedgerAllocator(path, allocatorData, quorumConfigProvider, zkc, bkc);
            allocator.start();
            pendingList.add(allocator);
            if (numPendings.decrementAndGet() == 0 && numFailures.get() == 0) {
                latch.countDown();
            }
        }
    };
    for (String name : allocators) {
        String path = poolPath + "/" + name;
        zkc.get().getData(path, false, dataCallback, null);
    }
    latch.await();
    if (numFailures.get() > 0) {
        throw new IOException("Failed to initialize allocators : " + allocators);
    }
}