@Override
void requestFinished(Object result, DIRRequest rq) {
configurationSetResponse response =
configurationSetResponse.newBuilder().setNewVersion((Long) result).build();
rq.sendSuccess(response);
}
@Override
public void startRequest(DIRRequest rq) {
final Configuration conf = (Configuration) rq.getRequestMessage();
String uuid = null;
if (conf.getParameterCount() == 0) {
rq.sendError(
ErrorType.ERRNO, POSIXErrno.POSIX_ERROR_EINVAL, "empty configuration set not allowed");
return;
}
uuid = conf.getUuid();
assert (uuid != null);
assert (database != null);
final String UUID = uuid;
database
.lookup(DIRRequestDispatcher.INDEX_ID_CONFIGURATIONS, uuid.getBytes(), rq)
.registerListener(
new DBRequestListener<byte[], Long>(false) {
@Override
Long execute(byte[] result, DIRRequest rq) throws Exception {
long currentVersion = 0;
if (result != null) {
ReusableBuffer buf = ReusableBuffer.wrap(result);
ConfigurationRecord dbData = new ConfigurationRecord(buf);
currentVersion = dbData.getVersion();
}
if (conf.getVersion() != currentVersion) {
throw new ConcurrentModificationException();
}
final long version = ++currentVersion;
ConfigurationRecord newRec = new ConfigurationRecord(conf);
newRec.setVersion(version);
final int size = newRec.getSize();
byte[] newBytes = new byte[size];
ReusableBuffer buf = ReusableBuffer.wrap(newBytes);
newRec.serialize(buf);
database
.singleInsert(
DIRRequestDispatcher.INDEX_ID_CONFIGURATIONS, UUID.getBytes(), newBytes, rq)
.registerListener(
new DBRequestListener<Object, Long>(true) {
@Override
Long execute(Object result, DIRRequest rq) throws Exception {
return version;
}
});
return null;
}
});
//
// database.lookup(DIRRequestDispatcher.INDEX_ID_CONFIGURATIONS,
// uuid.getBytes(), rq).registerListener(
// new DBRequestListener<byte[], Configuration>(true) {
//
// @Override
// Configuration execute(byte[] result, DIRRequest rq) throws Exception
// {
//
// if (result == null) {
// return Configuration.getDefaultInstance();
// } else
// return new
// ConfigurationRecord(ReusableBuffer.wrap(result)).getConfiguration();
// }
// });
}
