/** Returns a new sink when the roller asks for a new one. */
public synchronized EventSink newWritingSink(final Tagger tagger) throws IOException {
File dir = getDir(State.WRITING);
final String tag = tagger.newTag();
EventSink curSink = new SeqfileEventSink(new File(dir, tag).getAbsoluteFile());
writingQ.add(tag);
DFOData data = new DFOData(tag);
table.put(tag, data);
writingCount.incrementAndGet();
return new EventSinkDecorator<EventSink>(curSink) {
@Override
public synchronized void append(Event e) throws IOException, InterruptedException {
synchronized (NaiveFileFailoverManager.this) {
getSink().append(e);
writingEvtCount.incrementAndGet();
}
}
@Override
public synchronized void close() throws IOException, InterruptedException {
synchronized (NaiveFileFailoverManager.this) {
super.close();
if (!writingQ.contains(tag)) {
LOG.warn("Already changed tag " + tag + " out of WRITING state");
return;
}
LOG.info("File lives in " + getFile(tag));
changeState(tag, State.WRITING, State.LOGGED);
loggedCount.incrementAndGet();
}
}
};
}
@Override
public CounterSink newSink(Tagger format) throws IOException {
return new CounterSink(format.newTag());
}