/*
 * 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.paimon.flink.source;

import javax.annotation.Nullable;

import java.util.concurrent.atomic.AtomicLong;

/** A limiter to limit record reading. */
public class RecordLimiter {

    private final long limit;
    private final AtomicLong counter;

    public RecordLimiter(long limit) {
        this.limit = limit;
        this.counter = new AtomicLong(0);
    }

    public boolean reachLimit() {
        return counter.get() >= limit;
    }

    public void increment() {
        counter.incrementAndGet();
    }

    public void add(long delta) {
        counter.addAndGet(delta);
    }

    @Nullable
    public static RecordLimiter create(@Nullable Long limit) {
        return limit == null ? null : new RecordLimiter(limit);
    }
}
