@Test
public void testReadWriteAsyncSingleClient() throws IOException {
try {
// Create a BookKeeper client and a ledger
bkc = new BookKeeper("127.0.0.1");
lh = bkc.createLedger(ledgerPassword);
bkc.initMessageDigest("SHA1");
ledgerId = lh.getId();
LOG.info("Ledger ID: " + lh.getId());
for (int i = 0; i < numEntriesToWrite; i++) {
ByteBuffer entry = ByteBuffer.allocate(4);
entry.putInt(rng.nextInt(maxInt));
entry.position(0);
entries.add(entry.array());
entriesSize.add(entry.array().length);
bkc.asyncAddEntry(lh, entry.array(), this, sync);
}
// wait for all entries to be acknowledged
synchronized (sync) {
if (sync.counter < numEntriesToWrite) {
LOG.debug("Entries counter = " + sync.counter);
sync.wait();
}
}
LOG.debug("*** WRITE COMPLETED ***");
// close ledger
bkc.closeLedger(lh);
// *** WRITING PART COMPLETED // READ PART BEGINS ***
// open ledger
lh = bkc.openLedger(ledgerId, ledgerPassword);
LOG.debug("Number of entries written: " + lh.getLast());
assertTrue("Verifying number of entries written", lh.getLast() == numEntriesToWrite);
// read entries
bkc.asyncReadEntries(lh, 0, numEntriesToWrite - 1, this, (Object) sync);
synchronized (sync) {
while (sync.value == false) {
sync.wait();
}
}
assertTrue("Checking number of read entries", ls.size() == numEntriesToWrite);
LOG.debug("*** READ COMPLETED ***");
// at this point, LedgerSequence ls is filled with the returned values
int i = 0;
while (ls.hasMoreElements()) {
ByteBuffer origbb = ByteBuffer.wrap(entries.get(i));
Integer origEntry = origbb.getInt();
byte[] entry = ls.nextElement().getEntry();
ByteBuffer result = ByteBuffer.wrap(entry);
LOG.debug("Length of result: " + result.capacity());
LOG.debug("Original entry: " + origEntry);
Integer retrEntry = result.getInt();
LOG.debug("Retrieved entry: " + retrEntry);
assertTrue("Checking entry " + i + " for equality", origEntry.equals(retrEntry));
assertTrue(
"Checking entry " + i + " for size", entry.length == entriesSize.get(i).intValue());
i++;
}
bkc.closeLedger(lh);
} catch (KeeperException e) {
e.printStackTrace();
} catch (BKException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
