/*
 * Copyright 2021 Tianmian Tech. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.welab.wefe.mpc.pir.server.thread;

import com.welab.wefe.mpc.pir.protocol.ot.hauck.HauckObliviousTransfer;
import com.welab.wefe.mpc.pir.protocol.ot.hauck.HauckTarget;
import com.welab.wefe.mpc.pir.server.cache.HauckTargetCache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author eval
 */
public class ProduceHauckTargetThread extends Thread {
    private static final Logger LOG = LoggerFactory.getLogger(ProduceHauckTargetThread.class);

    private static int num = 100;
    private HauckObliviousTransfer mHauckObliviousTransfer = new HauckObliviousTransfer("");

    public ProduceHauckTargetThread(int keyCount) {
        num = keyCount;
        super.setName("produce-hauck-target");
    }

    @Override
    public void run() {
        for (; ; ) {
            try {
                if (HauckTargetCache.getInstance().size() < num) {
                    HauckTarget hauckTarget = mHauckObliviousTransfer.generateHauckTarget();
                    HauckTargetCache.getInstance().put(hauckTarget);
                } else {
                    Thread.sleep(2 * 1000);
                }
            } catch (InterruptedException e) {
                LOG.error(e.getMessage(), e);
            }
        }
    }
}
