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);
}
protected void add(Object value) {
File f = null;
FileOutputStream fos = null;
try {
f = createTempFile("S", dir);
fos = new FileOutputStream(f);
ObjectOutputStream fout = new ObjectOutputStream(new BufferedOutputStream(fos));
fout.writeObject(value);
fout.flush();
fos.getFD().sync();
} catch (Exception e) {
throw new SpaceError(e);
} finally {
if (fos != null) {
try {
fos.close();
} catch (Exception e) {
throw new SpaceError(e);
}
}
}
stored.add(f.getAbsolutePath());
/* fill cache */
if (cacheSize > data.size()) if ((data.size() + 1) == stored.size()) data.add(value);
}
private void save(FileOutputStream os) throws IOException {
// write the version number
os.write(KEYRING_FILE_VERSION);
CipherOutputStream cos = new CipherOutputStream(os, password);
ObjectOutputStream oos = new ObjectOutputStream(cos);
// write the data
try {
oos.writeObject(authorizationInfo);
oos.writeObject(protectionSpace);
os.flush();
os.getFD().sync();
} finally {
oos.close();
}
}