public void saveCache(
JMXInstrumentedCache<K, V> cache, File savedCachePath, Function<K, byte[]> converter)
throws IOException {
long start = System.currentTimeMillis();
String msgSuffix = " " + savedCachePath.getName() + " for " + cfname + " of " + ksname;
logger.debug("saving" + msgSuffix);
int count = 0;
File tmpFile =
File.createTempFile(savedCachePath.getName(), null, savedCachePath.getParentFile());
FileOutputStream fout = new FileOutputStream(tmpFile);
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(fout));
FileDescriptor fd = fout.getFD();
for (K key : cache.getKeySet()) {
byte[] bytes = converter.apply(key);
out.writeInt(bytes.length);
out.write(bytes);
++count;
}
out.flush();
fd.sync();
out.close();
if (!tmpFile.renameTo(savedCachePath))
throw new IOException("Unable to rename cache to " + savedCachePath);
if (logger.isDebugEnabled())
logger.debug(
"saved "
+ count
+ " keys in "
+ (System.currentTimeMillis() - start)
+ " ms from"
+ msgSuffix);
}
// Sends the message stored in prefix+message to the server
public synchronized void sendMessage(byte prefix, byte[] message) throws IOException {
if (handlers[prefix].shouldSendToSelf()) sendToSelf(prefix, message);
oos.write(prefix);
oos.write(message);
oos.flush();
}