/*
 * Copyright (C)2009 - SSHJ Contributors
 *
 * 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 net.schmizz.sshj.transport.random;

import net.schmizz.sshj.common.Factory;

/** A random factory wrapper that uses a single random instance. The underlying random instance has to be thread safe. */
public class SingletonRandomFactory
        implements Random, Factory<Random> {

    private final Random random;

    public SingletonRandomFactory(Factory<Random> factory) {
        random = factory.create();
    }

    @Override
    public Random create() {
        return this;
    }

    @Override
    public void fill(byte[] bytes, int start, int len) {
        random.fill(bytes, start, len);
    }

    @Override
    public void fill(final byte[] bytes) {
        random.fill(bytes);
    }
}
