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package com.github.netty.springboot;

import com.github.netty.core.util.LoggerFactoryX;
import com.github.netty.core.util.LoggerX;
import com.github.netty.core.util.Recycler;
import com.github.netty.core.util.ThreadPoolX;
import com.github.netty.protocol.nrpc.RpcClient;
import com.github.netty.protocol.nrpc.RpcClientFuture;
import io.netty.channel.epoll.Epoll;
import io.netty.channel.epoll.EpollChannelReportRunnable;
import io.netty.channel.nio.NioChannelReportRunnable;

import java.math.BigDecimal;
import java.util.StringJoiner;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * The task of statistics server information
 *
 * @author wangzihao
 */
public class NettyReportRunnable implements Runnable {
    public static boolean reportChannel = true;
    public static boolean reportRpc = false;
    private LoggerX logger = LoggerFactoryX.getLogger(getClass());
    private AtomicInteger reportCount = new AtomicInteger();
    private long beginTime = System.currentTimeMillis();
    private Runnable channelRunnable = Epoll.isAvailable() ?
            new EpollChannelReportRunnable(logger) : new NioChannelReportRunnable(logger);

    public static void start() {
        ThreadPoolX.getDefaultInstance().scheduleAtFixedRate(new NettyReportRunnable(), 5, 5, TimeUnit.SECONDS);
    }

    @Override
    public void run() {
        if (reportChannel) {
            channelRunnable.run();
        }
        if (reportRpc) {
            rpcReport();
        }
    }


    private void rpcReport() {
        try {
//            String timeoutApis = RpcClient.getTimeoutApis();
            long spinResponseCount = RpcClientFuture.TOTAL_SUCCESS_COUNT.longValue();
            long totalCount = RpcClient.getTotalInvokeCount();
            long timeoutCount = RpcClient.getTotalTimeoutCount();
            long successCount = totalCount - timeoutCount;
            double rate = totalCount == 0 ? 0 : (double) successCount / (double) totalCount * 100;
            double rateSpinResponseCount = totalCount == 0 ? 0 : (double) spinResponseCount / (double) totalCount * 100;

            long totalTime = System.currentTimeMillis() - beginTime;

//            long servletQueryCount = NettyMessageToServletRunnable.SERVLET_QUERY_COUNT.get();
//            long servletAndFilterTime = NettyMessageToServletRunnable.SERVLET_AND_FILTER_TIME.get();
//            long servletTime = ServletFilterChain.SERVLET_TIME.get();
//            long filterTime = ServletFilterChain.FILTER_TIME.get();

//            double servletAndFilterAvgRuntime = servletQueryCount == 0? 0:(double)servletAndFilterTime/(double)servletQueryCount;
//            double servletAvgRuntime = servletQueryCount ==0? 0:(double)servletTime/(double)servletQueryCount;
//            double filterAvgRuntime = servletQueryCount ==0? 0:(double)filterTime/(double)servletQueryCount;

//            StringJoiner filterJoin = new StringJoiner(", ");
//            for(Filter filter : ServletFilterChain.FILTER_SET){
//                    double filterAvgTime = (double)e.getValue().get() / (double)servletQueryCount;
//                filterJoin.add(
//                        filter.getClass().getSimpleName()
//                );
//            }

            StringJoiner joiner = new StringJoiner(", ");
            joiner.add("\r\n第" + reportCount.incrementAndGet() + "次统计 ");
            joiner.add("时间=" + (totalTime / 60000) + "分" + ((totalTime % 60000) / 1000) + "秒 ");
            joiner.add("rpc调用次数=" + successCount);
            joiner.add("超时次数=" + timeoutCount);
            joiner.add("自旋成功数=" + spinResponseCount);
            joiner.add("自旋成功率=" + formatRate(rateSpinResponseCount, 2) + "%, ");
            joiner.add("调用成功率=" + formatRate(rate, 2) + "%, ");
//            joiner.add("超时api="+ timeoutApis);
//            joiner.add("servlet执行次数="+ servletQueryCount);
//            joiner.add("servlet+filter平均时间="+ formatRate(servletAndFilterAvgRuntime,4)+"ms,");
//            joiner.add("servlet平均时间="+ formatRate(servletAvgRuntime,4)+"ms, ");
//            joiner.add("filter平均时间="+ formatRate(filterAvgRuntime,4)+"ms, ");
//            joiner.add("\r\n "+filterJoin.toString());

            long recyclerTotal = Recycler.MISS_COUNT.sum() + Recycler.HIT_COUNT.sum();
            long recyclerHit = Recycler.HIT_COUNT.sum();
            double hitRate = (double) recyclerHit / (double) recyclerTotal;
            joiner.add("\r\n获取实例次数=" + recyclerTotal + "次");
            joiner.add("实例命中=" + recyclerHit + "次");
            joiner.add("实例命中率=" + formatRate(hitRate * 100, 0) + "%");

            addMessage(joiner);

            logger.info(joiner.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private String formatRate(double num, int rate) {
        if (Double.isNaN(num)) {
            return "0";
        }
        if (num == (int) num) {
            return String.valueOf(((int) num));
        }
        return new BigDecimal(num).setScale(rate, BigDecimal.ROUND_HALF_DOWN).stripTrailingZeros().toString();
    }

    protected void addMessage(StringJoiner messageJoiner) {

    }

}