src/java/org/apache/cassandra/repair/ParallelRequestCoordinator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.cassandra.repair;

import java.util.HashSet;
import java.util.Set;

public class ParallelRequestCoordinator<R> implements IRequestCoordinator<R>
{
    private final Set<R> requests = new HashSet<>();
    private final IRequestProcessor<R> processor;

    public ParallelRequestCoordinator(IRequestProcessor<R> processor)
    {
        this.processor = processor;
    }

    @Override
    public void add(R request) { requests.add(request); }

    @Override
    public void start()
    {
        for (R request : requests)
            processor.process(request);
    }

    @Override
    public int completed(R request)
    {
        requests.remove(request);
        return requests.size();
    }
}