Examples with OpenCursorCallback org.apache.bookkeeper.mledger.AsyncCallbacks.OpenCursorCallback used on opensource projects

Example 21 with OpenCursorCallback

use of org.apache.bookkeeper.mledger.AsyncCallbacks.OpenCursorCallback in project incubator-pulsar by apache.

the class ManagedLedgerImpl method openCursor.

@Override
public ManagedCursor openCursor(String cursorName, InitialPosition initialPosition) throws InterruptedException, ManagedLedgerException {
    final CountDownLatch counter = new CountDownLatch(1);
    class Result {

        ManagedCursor cursor = null;

        ManagedLedgerException exception = null;
    }
    final Result result = new Result();
    asyncOpenCursor(cursorName, initialPosition, new OpenCursorCallback() {

        @Override
        public void openCursorComplete(ManagedCursor cursor, Object ctx) {
            result.cursor = cursor;
            counter.countDown();
        }

        @Override
        public void openCursorFailed(ManagedLedgerException exception, Object ctx) {
            result.exception = exception;
            counter.countDown();
        }
    }, null);
    if (!counter.await(AsyncOperationTimeoutSeconds, TimeUnit.SECONDS)) {
        throw new ManagedLedgerException("Timeout during open-cursor operation");
    }
    if (result.exception != null) {
        log.error("Error adding entry", result.exception);
        throw result.exception;
    }
    return result.cursor;
}