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/*
 * 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.inlong.common.monitor;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.concurrent.atomic.AtomicLong;

public class CounterGroupExt {

    private String name;
    private HashMap counters = new HashMap();
    private int maxCnt = 100000;
    private static final Logger logger = LoggerFactory.getLogger(CounterGroupExt.class);

    public CounterGroupExt() {
    }

    public CounterGroupExt(int maxCnt) {
        this.maxCnt = maxCnt;
    }

    public synchronized Long get(String name) {
        return this.getCounter(name).get();
    }

    public synchronized Long incrementAndGet(String name) {
        return this.getCounter(name).incrementAndGet();
    }

    public synchronized Long addAndGet(String name, Long delta) {
        return this.counters.size() < this.maxCnt ? this.getCounter(name).addAndGet(delta) : 0L;
    }

    public synchronized void setValue(String name, Long newValue) {
        if (this.counters.size() < this.maxCnt) {
            this.getCounter(name).set(newValue);
        }

    }

    public synchronized void add(CounterGroupExt counterGroup) {
        synchronized (counterGroup) {
            Iterator ite = counterGroup.getCounters().entrySet().iterator();

            while (ite.hasNext()) {
                Entry entry = (Entry) ite.next();
                this.addAndGet((String) entry.getKey(), ((AtomicLong) entry.getValue()).get());
            }

        }
    }

    public synchronized void set(String name, Long value) {
        this.getCounter(name).set(value);
    }

    public synchronized AtomicLong getCounter(String name) {
        return this.counters.computeIfAbsent(name, k -> new AtomicLong());
    }

    public synchronized void del(String name) {
        this.counters.remove(name);
    }

    public synchronized void clear() {
        this.counters.clear();
    }

    public synchronized String toString() {
        return "{ name:" + this.name + " counters:" + this.counters + " }";
    }

    public synchronized String getName() {
        return this.name;
    }

    public synchronized void setName(String name) {
        this.name = name;
    }

    public synchronized HashMap getCounters() {
        return this.counters;
    }

    public synchronized void setCounters(HashMap counters) {
        this.counters = counters;
    }
}