/**
* Start the checker thread with the given masterId. If the thread is already running, kill it
* first and then start anew. Returns immediately.
*/
public void beginChecking(MasterId masterId) {
stopChecking();
if (masterId.getMasterUri() == null) {
failureCallback.handleFailure("empty concert URI");
return;
}
URI uri;
try {
uri = new URI(masterId.getMasterUri());
} catch (URISyntaxException e) {
failureCallback.handleFailure("invalid concert URI");
return;
}
checkerThread = new CheckerThread(masterId, uri);
checkerThread.start();
}
/** Stop the checker thread. */
public void stopChecking() {
if (checkerThread != null && checkerThread.isAlive()) {
checkerThread.interrupt();
}
}