/**
* @param cancel {@code True} to close with cancellation.
* @throws GridException If failed.
*/
@Override
public void close(boolean cancel) throws GridException {
if (!closed.compareAndSet(false, true)) return;
busyLock.block();
if (log.isDebugEnabled())
log.debug("Closing data loader [ldr=" + this + ", cancel=" + cancel + ']');
GridException e = null;
try {
// Assuming that no methods are called on this loader after this method is called.
if (cancel) {
cancelled = true;
for (Buffer buf : bufMappings.values()) buf.cancelAll();
} else doFlush();
ctx.event().removeLocalEventListener(discoLsnr);
ctx.io().removeMessageListener(topic);
} catch (GridException e0) {
e = e0;
}
fut.onDone(null, e);
if (e != null) throw e;
}
/**
* Flushes every internal buffer if buffer was flushed before passed in threshold.
*
* <p>Does not wait for result and does not fail on errors assuming that this method should be
* called periodically.
*/
@Override
public void tryFlush() throws GridInterruptedException {
if (!busyLock.enterBusy()) return;
try {
for (Buffer buf : bufMappings.values()) buf.flush();
lastFlushTime = U.currentTimeMillis();
} finally {
leaveBusy();
}
}
/** Leaves busy lock. */
private void leaveBusy() {
busyLock.leaveBusy();
}
/** Enters busy lock. */
private void enterBusy() {
if (!busyLock.enterBusy()) throw new IllegalStateException("Data loader has been closed.");
}