@Override
protected boolean processEvent(Kind<?> kind, final Path filename) throws IOException {
metrics.getFilesystemEventsMeter().mark();
if (!isS3MetadataFile(filename)) {
return false;
}
runLock.lock();
try {
if (isStopped()) {
LOG.warn("Driver is stopped, ignoring file watch event for {}", filename);
return false;
}
final Path fullPath = configuration.getS3MetadataDirectory().resolve(filename);
if (kind.equals(StandardWatchEventKinds.ENTRY_DELETE)) {
Optional<SingularityS3Uploader> found =
Iterables.tryFind(
metadataToUploader.values(),
new Predicate<SingularityS3Uploader>() {
@Override
public boolean apply(SingularityS3Uploader input) {
return input.getMetadataPath().equals(fullPath);
}
});
LOG.trace("Found {} to match deleted path {}", found, filename);
if (found.isPresent()) {
expiring.add(found.get());
}
} else {
return handleNewOrModifiedS3Metadata(fullPath);
}
return false;
} finally {
runLock.unlock();
}
}
@Override
public void run() {
while (running) {
try {
WatchKey key = watcher.take();
sleep(100);
for (WatchEvent<?> event : key.pollEvents()) {
Kind<?> kind = event.kind();
String dateiname = event.context().toString();
int linie;
LineReader lr;
switch (kind.name()) {
case "ENTRY_CREATE":
// HTreff<X>PN<Y>.ctl
// HTreff<X>PN<Y>.nrt
// HTreff<X>MN<Y>.ctl
// HTreff<X>MN<Y>.nrt
if (!dateiname.startsWith("HTreff")) break;
int endIndex = dateiname.indexOf('N') - 1;
linie = Integer.parseUnsignedInt(dateiname.substring(6, endIndex));
lr = getLineReaderByNumber(linie);
if (lr != null) {
File datei = new File(dateiname);
if (dateiname.endsWith(".ctl")) {
FileInputStream reader = null;
try {
reader = new FileInputStream(dateiname);
List<String> lines = IOUtils.readLines(reader, Charset.forName("UTF-8"));
if (lines.size() > 0) lr.addTreffer(new Hit(lines.get(0)));
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) IOUtils.closeQuietly(reader);
}
}
if (!datei.delete()) {
System.out.println(dateiname + " konnte nicht gelöscht werden.");
}
}
break;
case "ENTRY_DELETE":
// HServ<X>.ctl
if (dateiname.startsWith("HServ") && dateiname.endsWith(".ctl")) {
linie = Integer.parseUnsignedInt(dateiname.substring(5, dateiname.length() - 4));
lr = getLineReaderByNumber(linie);
if (lr != null) lr.reenable();
}
break;
default: // OVERFLOW
continue;
}
}
key.reset();
} catch (InterruptedException | ClosedWatchServiceException e) {
if (running) {
e.printStackTrace();
}
}
}
}