/**
* @param keyBytes Key to remove.
* @return {@code true} if value was actually removed, {@code false} otherwise.
* @throws GridException If failed.
*/
@SuppressWarnings({"unchecked"})
@Nullable
GridCacheSwapEntry<V> read(byte[] keyBytes) throws GridException {
if (!enabled) return null;
GridSwapByteArray valBytes = swapMgr.read(spaceName, new GridSwapByteArray(keyBytes));
if (valBytes == null) return null;
// To unmarshal swap entry itself local class loader will be enough.
return recreateEntry((GridCacheSwapEntry<V>) unmarshal(valBytes, cctx.deploy().localLoader()));
}
/**
* Writes a versioned value to swap.
*
* @param key Key.
* @param val Value.
* @param ver Version.
* @param metrics Metrics.
* @param ttl Entry time to live.
* @param expireTime Swap entry expiration time.
* @param clsLdrId Class loader id for entry value.
* @throws GridException If failed.
*/
void write(
byte[] key,
byte[] val,
GridCacheVersion ver,
long ttl,
long expireTime,
GridCacheMetricsAdapter metrics,
UUID clsLdrId)
throws GridException {
if (!enabled) return;
GridCacheSwapEntry<V> entry =
new GridCacheSwapEntry<V>(val, ver, ttl, expireTime, metrics, clsLdrId);
swapMgr.write(spaceName, new GridSwapByteArray(key), new GridSwapByteArray(marshal(entry)));
}
/**
* @param keyBytes Key to remove.
* @return {@code true} if value was actually removed, {@code false} otherwise.
* @throws GridException If failed.
*/
@SuppressWarnings({"unchecked"})
@Nullable
GridCacheSwapEntry<V> readAndRemove(byte[] keyBytes) throws GridException {
if (!enabled) return null;
final GridTuple<GridSwapByteArray> t = F.t1();
swapMgr.remove(
spaceName,
new GridSwapByteArray(keyBytes),
new CI1<GridSwapByteArray>() {
@Override
public void apply(GridSwapByteArray removed) {
t.set(removed);
}
});
if (t.get() == null) return null;
// To unmarshal swap entry itself local class loader will be enough.
return recreateEntry((GridCacheSwapEntry<V>) unmarshal(t.get(), cctx.deploy().localLoader()));
}
/**
* @return Swap size.
* @throws GridException If failed.
*/
long swapSize() throws GridException {
return enabled ? swapMgr.swapSize(spaceName) : -1;
}
/**
* @param key Key to remove.
* @return {@code true} if value was actually removed, {@code false} otherwise.
* @throws GridException If failed.
*/
boolean remove(byte[] key) throws GridException {
return enabled && swapMgr.remove(spaceName, new GridSwapByteArray(key), null);
}