metrics 开发监控实现jdbc

Metrics 主要有五大基本组件
1：Counter
  记录执行次数
2：Gauge
  获取某个值
3：Meter
  用来计算事件的速率
4：Histogram
  可以为数据流提供统计数据。 除了最大值，最小值，平均值外，它还可以测量 中值(median)，百分比比如XX%这样的Quantile数据
5：Timer
  用来测量一段代码被调用的速率和用时。等于Meter+Hitogram，既算TPS，也算执行时间。

这篇博文主要实现:

1.这五种指标的基本实现,写到控制台

2.指标实现队列长度监控

3.指标写入csv,jmx,jdbc

1.

基础类:

package com.newland.learning;

import com.codahale.metrics.MetricRegistry;

import java.util.concurrent.TimeUnit;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
public class Base {

    protected static MetricRegistry metric = Constants.REGISTER;
    protected static void secondSleep(long value)
    {
        try
        {
            TimeUnit.SECONDS.sleep(value);
        } catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }
    protected static void milliSecondSleep(long value)
    {
        try
        {
            TimeUnit.MILLISECONDS.sleep(value);
        } catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }
}

核心类:MetricRegistry是常量

package com.newland.learning;

import com.codahale.metrics.MetricRegistry;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
public class Constants {

    public static MetricRegistry REGISTER = new MetricRegistry();

}

先写控制台输出:

package com.newland.learning;

import com.codahale.metrics.ConsoleReporter;

import java.util.concurrent.TimeUnit;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
public class ConsoleReport {
    public static void startReport()
    {
        final ConsoleReporter reporter = ConsoleReporter.forRegistry(Constants.REGISTER)
                .convertRatesTo(TimeUnit.SECONDS)
                .convertDurationsTo(TimeUnit.SECONDS)
                .build();
        //一秒钟执行一次
        reporter.start(1, TimeUnit.SECONDS);
    }
}

gauge:

package com.newland.learning;

import com.codahale.metrics.Gauge;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
/**
 * 获取某个值,瞬时
 */
public class GaugeTest extends Base {
    public static void main(String[] args)
    {
        ConsoleReport.startReport();
        metric.register("com.learn.gauge.freeMemory", new Gauge<Long>(){
            @Override
            public Long getValue() {
                //这里是获取当前JVM可用内存
                return Runtime.getRuntime().freeMemory();
            }
        });
        secondSleep(2);
    }
}

结果:

18-1-28 19:18:54 ===============================================================

-- Gauges ----------------------------------------------------------------------
com.learn.gauge.freeMemory
             value = 90862672

18-1-28 19:18:55 ===============================================================

-- Gauges ----------------------------------------------------------------------
com.learn.gauge.freeMemory
             value = 90862672

counter:

package com.newland.learning;

import com.codahale.metrics.Counter;

import java.util.Random;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */

/**
 * 记录执行次数
 */
public class CounterTest extends Base{
    final static Counter exec = metric.counter("com.learn.counter.invoke");
    public static void main(String[] args)
    {
        ConsoleReport.startReport();
        new Thread(()->{
            for(int i=1;i<=3;i++)
            {
                exec.inc();
                milliSecondSleep(new Random().nextInt(500)*2);
            }
        }).start();
        secondSleep(3);
    }

}

结果:

18-1-28 19:19:34 ===============================================================

-- Counters --------------------------------------------------------------------
com.learn.counter.invoke
             count = 2

18-1-28 19:19:35 ===============================================================

-- Counters --------------------------------------------------------------------
com.learn.counter.invoke
             count = 3

18-1-28 19:19:36 ===============================================================

-- Counters --------------------------------------------------------------------
com.learn.counter.invoke
             count = 3

Meter:

package com.newland.learning;

import com.codahale.metrics.Meter;

import java.util.Random;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
/**
 * Meter用来计算事件的速率
 */
public class MeterTest extends Base {

    static final Meter requests = metric.meter("com.learn.meter.invoke");
    public static void main(String[] args)
    {
        ConsoleReport.startReport();
        new Thread(()->{
            for(int i=1;i<=2;i++)
            {
                requests.mark();
                milliSecondSleep(new Random().nextInt(500)*2);
            }
        }).start();
        secondSleep(2);
    }
}

结果:

18-1-28 19:20:52 ===============================================================

-- Meters ----------------------------------------------------------------------
com.learn.meter.invoke
             count = 2
         mean rate = 1.69 events/second
     1-minute rate = 0.00 events/second
     5-minute rate = 0.00 events/second
    15-minute rate = 0.00 events/second

18-1-28 19:20:53 ===============================================================

-- Meters ----------------------------------------------------------------------
com.learn.meter.invoke
             count = 2
         mean rate = 0.93 events/second
     1-minute rate = 0.00 events/second
     5-minute rate = 0.00 events/second
    15-minute rate = 0.00 events/second

Histogram:

package com.newland.learning;

import com.codahale.metrics.Histogram;

import java.util.Arrays;
import java.util.List;
import java.util.Random;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
/**
 * Histogram可以为数据流提供统计数据。 除了最大值，最小值，平均值外，它还可以测量 中值(median)，
 * 百分比比如XX%这样的Quantile数据
 */
public class HistogramTest extends Base{
    static final Histogram his = metric.histogram("com.learn.histogram.score");
    static List<Integer> scores = Arrays.asList(60, 75, 80, 62, 90, 42, 33, 95, 61, 73);
    public static void main(String[] args)
    {
        ConsoleReport.startReport();
        new Thread(()->{
            scores.forEach( (score) -> {
                his.update(score);
                milliSecondSleep(new Random().nextInt(500)*2);
            });
        }).start();
        secondSleep(10);
    }
}

结果:

18-1-28 19:21:36 ===============================================================

-- Histograms ------------------------------------------------------------------
com.learn.histogram.score
             count = 10
               min = 33
               max = 95
              mean = 67.08
            stddev = 18.68
            median = 62.00
              75% <= 80.00
              95% <= 95.00
              98% <= 95.00
              99% <= 95.00
            99.9% <= 95.00

18-1-28 19:21:37 ===============================================================

-- Histograms ------------------------------------------------------------------
com.learn.histogram.score
             count = 10
               min = 33
               max = 95
              mean = 67.08
            stddev = 18.68
            median = 62.00
              75% <= 80.00
              95% <= 95.00
              98% <= 95.00
              99% <= 95.00
            99.9% <= 95.00

18-1-28 19:21:38 ===============================================================

-- Histograms ------------------------------------------------------------------
com.learn.histogram.score
             count = 10
               min = 33
               max = 95
              mean = 67.08
            stddev = 18.68
            median = 62.00
              75% <= 80.00
              95% <= 95.00
              98% <= 95.00
              99% <= 95.00
            99.9% <= 95.00

18-1-28 19:21:39 ===============================================================

-- Histograms ------------------------------------------------------------------
com.learn.histogram.score
             count = 10
               min = 33
               max = 95
              mean = 67.08
            stddev = 18.68
            median = 62.00
              75% <= 80.00
              95% <= 95.00
              98% <= 95.00
              99% <= 95.00
            99.9% <= 95.00

Timer:

package com.newland.learning;

import com.codahale.metrics.Timer;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
/**
 * Timer用来测量一段代码被调用的速率和用时。
 * 等于Meter+Hitogram，既算TPS，也算执行时间。
 */
public class TimerTest extends Base
{
    static final Timer timer = metric.timer("com.learn.timer.invoke");
    static void inovke(long time)
    {
        final Timer.Context context = timer.time();
        try
        {
            secondSleep(time);
        }finally
        {
            context.stop();
        }
    }
    public static void main(String[] args)
    {
        ConsoleReport.startReport();
        inovke(1);
        inovke(2);
        inovke(2);
        inovke(8);
        secondSleep(1);
    }
}

结果:

18-1-28 19:22:28 ===============================================================

-- Timers ----------------------------------------------------------------------
com.learn.timer.invoke
             count = 3
         mean rate = 0.23 calls/second
     1-minute rate = 0.38 calls/second
     5-minute rate = 0.40 calls/second
    15-minute rate = 0.40 calls/second
               min = 1.00 seconds
               max = 2.00 seconds
              mean = 1.68 seconds
            stddev = 0.47 seconds
            median = 2.00 seconds
              75% <= 2.00 seconds
              95% <= 2.00 seconds
              98% <= 2.00 seconds
              99% <= 2.00 seconds
            99.9% <= 2.00 seconds

18-1-28 19:22:29 ===============================================================

-- Timers ----------------------------------------------------------------------
com.learn.timer.invoke
             count = 4
         mean rate = 0.28 calls/second
     1-minute rate = 0.38 calls/second
     5-minute rate = 0.40 calls/second
    15-minute rate = 0.40 calls/second
               min = 1.00 seconds
               max = 8.00 seconds
              mean = 3.44 seconds
            stddev = 2.86 seconds
            median = 2.00 seconds
              75% <= 8.00 seconds
              95% <= 8.00 seconds
              98% <= 8.00 seconds
              99% <= 8.00 seconds
            99.9% <= 8.00 seconds

2.Counter获取队列长度

package com.newland.learning;

import com.codahale.metrics.Counter;

import java.util.Queue;
import java.util.Random;
import java.util.concurrent.LinkedBlockingQueue;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
public class QueueSize extends Base{

    final static Counter exec = metric.counter("com.learn.counter2.invoke");

    public static Queue<String> q = new LinkedBlockingQueue<String>();

    public static Random random = new Random();

    public static void addJob(String job) {
        exec.inc();
        q.offer(job);
    }

    public static String takeJob() {
        exec.dec();
        return q.poll();
    }

    public static void main(String[] args) throws InterruptedException {
        ConsoleReport.startReport();
        int num = 1;
        while(true){
            Thread.sleep(200);
            if (random.nextDouble() > 0.7){
                String job = takeJob();
                System.out.println("take job : "+job);
            }else{
                String job = "Job-"+num;
                addJob(job);
                System.out.println("add job : "+job);
            }
            num++;
        }
    }
}

结果:

take job : null
add job : Job-2
take job : Job-2
add job : Job-4
add job : Job-5
18-1-28 19:23:12 ===============================================================

-- Counters --------------------------------------------------------------------
com.learn.counter2.invoke
             count = 1

add job : Job-6
add job : Job-7
take job : Job-4
add job : Job-9
18-1-28 19:23:13 ===============================================================

-- Counters --------------------------------------------------------------------
com.learn.counter2.invoke
             count = 3

add job : Job-10
take job : Job-5
add job : Job-12
add job : Job-13
add job : Job-14

3.写入csv,jmx,jdbc

package com.newland.learning;

import com.codahale.metrics.CsvReporter;
import com.codahale.metrics.JmxReporter;

import javax.sql.DataSource;
import java.io.File;
import java.util.concurrent.TimeUnit;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
public class MetricReport {

    private JmxReporter jmxReporter;
    private JdbcReporter jdbcReporter;
    private CsvReporter csvReporter;

    public void startJdbcReport() {
        //获取jdbc...
        DataSource dataSource = null;
        String source = "test_db";

        jdbcReporter = JdbcReporter.forRegistry(Constants.REGISTER)
                .convertRatesTo(TimeUnit.SECONDS)
                .convertDurationsTo(TimeUnit.MILLISECONDS)
                .isDelOldData(true)
                .build(source, dataSource);
        jdbcReporter.start(5, TimeUnit.SECONDS);
    }
    public void startCsvReport(){
        //路径
        File fileDir = new File("");
        if (!fileDir.exists()) {
            fileDir.mkdirs();
        }
        csvReporter = CsvReporter.forRegistry(Constants.REGISTER)
                .convertRatesTo(TimeUnit.SECONDS)
                .convertDurationsTo(TimeUnit.MILLISECONDS)
                .build(fileDir);
        csvReporter.start(5, TimeUnit.SECONDS);
    }

    public void startJmxReport(){
        jmxReporter = JmxReporter.forRegistry(Constants.REGISTER).build();
        jmxReporter.start();
    }
}

写入jdbc,需要自己实现继承:

package com.newland.learning;

import com.codahale.metrics.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Map;
import java.util.SortedMap;
import java.util.concurrent.TimeUnit;

/**
 * Created by garfield on 2018/1/28.
 * Project test
 * Package com.newland.learning
 */
public class JdbcReporter extends ScheduledReporter {

    /**
     * Returns a new {@link Builder} for {@link JdbcReporter}.
     *
     * @param registry the registry to report
     * @return a {@link Builder} instance for a {@link JdbcReporter}
     */
    public static Builder forRegistry(MetricRegistry registry) {
        return new Builder(registry);
    }

    /**
     * A builder for {@link JdbcReporter} instances. Defaults to converting rates to events/second, converting durations
     * to milliseconds, and not filtering metrics.
     */
    public static class Builder {
        private final MetricRegistry registry;
        private TimeUnit rateUnit;
        private TimeUnit durationUnit;
        private Clock clock;
        private MetricFilter filter;
        private TimeUnit timestampUnit;
        private boolean isDelOldData;

        private Builder(MetricRegistry registry) {
            this.registry = registry;
            this.rateUnit = TimeUnit.SECONDS;
            this.durationUnit = TimeUnit.MILLISECONDS;
            this.clock = Clock.defaultClock();
            this.filter = MetricFilter.ALL;
            this.timestampUnit = TimeUnit.SECONDS;
            this.isDelOldData = true;
        }

        /**
         * Convert rates to the given time unit.
         *
         * @param rateUnit a unit of time
         * @return {@code this}
         */
        public Builder convertRatesTo(TimeUnit rateUnit) {
            this.rateUnit = rateUnit;
            return this;
        }

        /**
         * Convert durations to the given time unit.
         *
         * @param durationUnit a unit of time
         * @return {@code this}
         */
        public Builder convertDurationsTo(TimeUnit durationUnit) {
            this.durationUnit = durationUnit;
            return this;
        }

        /**
         * Use the given {@link Clock} instance for the time.
         *
         * @param clock a {@link Clock} instance
         * @return {@code this}
         */
        public Builder withClock(Clock clock) {
            this.clock = clock;
            return this;
        }

        /**
         * Only report metrics which match the given filter.
         *
         * @param filter a {@link MetricFilter}
         * @return {@code this}
         */
        public Builder filter(MetricFilter filter) {
            this.filter = filter;
            return this;
        }

        /**
         * Convert reporting timestamp to the given time unit.
         *
         * @param timestampUnit a unit of time
         * @return {@code this}
         */
        public Builder convertTimestampTo(TimeUnit timestampUnit) {
            this.timestampUnit = timestampUnit;
            return this;
        }

        public Builder isDelOldData(boolean isDelOldData) {
            this.isDelOldData = isDelOldData;
            return this;
        }

        /**
         * Builds a {@link JdbcReporter} with the given properties to report metrics to a database
         *
         * @param source     A value to identify the source of each metrics in database
         * @param dataSource The {@link DataSource}, which will be used to store the data from each metric
         * @return a {@link JdbcReporter}
         */
        public JdbcReporter build(String source, DataSource dataSource) {
            return new JdbcReporter(registry, source, dataSource, rateUnit, durationUnit, timestampUnit, clock, filter, isDelOldData);
        }
    }

    private static final Logger logger = LoggerFactory.getLogger(JdbcReporter.class);

    private final Clock clock;
    private final String source;
    private final DataSource dataSource;
    private final TimeUnit timestampUnit;
    private final boolean isDelOldData;

    private static final String INSERT_GAUGE_QUERY =
            "INSERT INTO METRIC_GAUGE (SOURCE, TIMESTAMP, NAME, VALUE) VALUES (?,?,?,?)";
    private static final String INSERT_COUNTER_QUERY =
            "INSERT INTO METRIC_COUNTER (SOURCE, TIMESTAMP, NAME, COUNT) VALUES (?,?,?,?)";
    private static final String INSERT_METER_QUERY =
            "INSERT INTO METRIC_METER (SOURCE,TIMESTAMP,NAME,COUNT,MEAN_RATE,M1_RATE,M5_RATE,M15_RATE,RATE_UNIT) "
                    + "VALUES (?,?,?,?,?,?,?,?,?)";
    private static final String INSERT_HISTOGRAM_QUERY =
            "INSERT INTO METRIC_HISTOGRAM (SOURCE,TIMESTAMP,NAME,COUNT,MAX,MEAN,MIN,STDDEV,P50,P75,P95,P98,P99,P999) "
                    + "VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
    private static final String INSERT_TIMER_QUERY =
            "INSERT INTO METRIC_TIMER (SOURCE,TIMESTAMP,NAME,COUNT,MAX,MEAN,MIN,STDDEV,P50,P75,P95,P98,P99,P999,"
                    + "MEAN_RATE,M1_RATE,M5_RATE,M15_RATE,RATE_UNIT,DURATION_UNIT) "
                    + "VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";

    private static final String DELETE_GAUGE_QUERY =
            "DELETE FROM METRIC_GAUGE WHERE SOURCE=? AND NAME=?";
    private static final String DELETE_COUNTER_QUERY =
            "DELETE FROM METRIC_COUNTER WHERE SOURCE=? AND NAME=?";
    private static final String DELETE_METER_QUERY =
            "DELETE FROM METRIC_METER WHERE SOURCE=? AND NAME=?";
    private static final String DELETE_HISTOGRAM_QUERY =
            "DELETE FROM METRIC_HISTOGRAM WHERE SOURCE=? AND NAME=?";
    private static final String DELETE_TIMER_QUERY =
            "DELETE FROM METRIC_TIMER WHERE SOURCE=? AND NAME=?";

    private static final String DELETE_ALL_GAUGE_QUERY =
            "DELETE FROM METRIC_GAUGE WHERE SOURCE=?";
    private static final String DELETE_ALL_COUNTER_QUERY =
            "DELETE FROM METRIC_COUNTER WHERE SOURCE=?";
    private static final String DELETE_ALL_METER_QUERY =
            "DELETE FROM METRIC_METER WHERE SOURCE=?";
    private static final String DELETE_ALL_HISTOGRAM_QUERY =
            "DELETE FROM METRIC_HISTOGRAM WHERE SOURCE=?";
    private static final String DELETE_ALL_TIMER_QUERY =
            "DELETE FROM METRIC_TIMER WHERE SOURCE=?";

    private JdbcReporter(MetricRegistry registry, String source, DataSource dataSource, TimeUnit rateUnit,
                         TimeUnit durationUnit, TimeUnit timestampUnit, Clock clock, MetricFilter filter,
                         boolean isDelOldData) {
        super(registry, "jdbc-reporter", filter, rateUnit, durationUnit);
        this.source = source;
        this.dataSource = dataSource;
        this.timestampUnit = timestampUnit;
        this.clock = clock;
        if (source == null || source.trim().isEmpty()) {
            throw new IllegalArgumentException("Source cannot be null or empty");
        }
        if (dataSource == null) {
            throw new IllegalArgumentException("Data source cannot be null");
        }
        this.isDelOldData = isDelOldData;
    }

    @Override
    public void start(long period, TimeUnit unit) {
        if (isDelOldData) {
            delAllMetric();
        }
        super.start(period, unit);
    }

    @SuppressWarnings("rawtypes")
    @Override
    public void report(SortedMap<String, Gauge> gauges, SortedMap<String, Counter> counters,
                       SortedMap<String, Histogram> histograms, SortedMap<String, Meter> meters,
                       SortedMap<String, Timer> timers) {
        final long timestamp = timestampUnit.convert(clock.getTime(), TimeUnit.MILLISECONDS);

        if (!gauges.isEmpty()) {
            reportGauges(timestamp, gauges);
        }
        if (!counters.isEmpty()) {
            reportCounters(timestamp, counters);
        }
        if (!histograms.isEmpty()) {
            reportHistograms(timestamp, histograms);
        }
        if (!meters.isEmpty()) {
            reportMeters(timestamp, meters);
        }
        if (!timers.isEmpty()) {
            reportTimers(timestamp, timers);
        }
    }

    @Override
    protected String getRateUnit() {
        return super.getRateUnit();
    }
    private void delAllMetric() {
        Connection connection = null;
        PreparedStatement ps = null;
        try {
            connection = dataSource.getConnection();
            connection.setAutoCommit(true);
            ps = connection.prepareStatement(DELETE_ALL_COUNTER_QUERY);
            ps.setString(1, source);
            ps.execute();
            ps.close();

            ps = connection.prepareStatement(DELETE_ALL_GAUGE_QUERY);
            ps.setString(1, source);
            ps.execute();
            ps.close();

            ps = connection.prepareStatement(DELETE_ALL_METER_QUERY);
            ps.setString(1, source);
            ps.execute();
            ps.close();

            ps = connection.prepareStatement(DELETE_ALL_HISTOGRAM_QUERY);
            ps.setString(1, source);
            ps.execute();
            ps.close();

            ps = connection.prepareStatement(DELETE_ALL_TIMER_QUERY);
            ps.setString(1, source);
            ps.execute();
            ps.close();

            ps = null;
            connection.close();
            connection = null;
        } catch (SQLException e) {
            rollbackTransaction(connection);
            logger.error("Error when delAllMetric", e);
        } finally {
            closeQuietly(connection, ps, null);
        }
    }
    private void delMetric(PreparedStatement ps, String name) throws SQLException {
        ps.setString(1, source);
        ps.setString(2, name);
    }
    @SuppressWarnings("rawtypes")
    private void reportGauges(final long timestamp, final SortedMap<String, Gauge> gauges) {
        Connection connection = null;
        PreparedStatement ps = null;
        PreparedStatement dps = null;
        try {
            connection = dataSource.getConnection();
            connection.setAutoCommit(false);
            ps = connection.prepareStatement(INSERT_GAUGE_QUERY);
            dps = connection.prepareStatement(DELETE_GAUGE_QUERY);
            for (Map.Entry<String, Gauge> entry : gauges.entrySet()) {
                String name = entry.getKey();
                Gauge gauge = entry.getValue();
                reportGauge(timestamp, ps, name, gauge);
                ps.addBatch();

                delMetric(dps, name);
                dps.addBatch();
            }

            if (isDelOldData) {
                dps.executeBatch();
            }

            ps.executeBatch();
            connection.commit();
            dps.close();
            dps = null;
            ps.close();
            ps = null;
            connection.close();
            connection = null;
        } catch (SQLException e) {
            rollbackTransaction(connection);
            logger.error("Error when reporting gauges", e);
        } finally {
            closeQuietly(connection, ps, dps);
        }
    }

    @SuppressWarnings("rawtypes")
    private void reportGauge(final long timestamp, PreparedStatement ps, String name, Gauge gauge) throws SQLException {
        ps.setString(1, source);
        ps.setLong(2, timestamp);
        ps.setString(3, name);
        ps.setObject(4, gauge.getValue());
    }

    private void reportCounters(final long timestamp, final SortedMap<String, Counter> counters) {
        Connection connection = null;
        PreparedStatement ps = null;
        PreparedStatement dps = null;
        try {
            connection = dataSource.getConnection();
            connection.setAutoCommit(false);
            ps = connection.prepareStatement(INSERT_COUNTER_QUERY);
            dps = connection.prepareStatement(DELETE_COUNTER_QUERY);
            for (Map.Entry<String, Counter> entry : counters.entrySet()) {
                String name = entry.getKey();
                Counter counter = entry.getValue();
                reportCounter(timestamp, ps, name, counter);
                ps.addBatch();

                delMetric(dps, name);
                dps.addBatch();
            }

            if (isDelOldData) {
                dps.executeBatch();
            }

            ps.executeBatch();
            connection.commit();
            dps.close();
            dps = null;
            ps.close();
            ps = null;
            connection.close();
            connection = null;
        } catch (SQLException e) {
            rollbackTransaction(connection);
            logger.error("Error when reporting counters", e);
        } finally {
            closeQuietly(connection, ps, dps);
        }
    }

    private void reportCounter(final long timestamp, PreparedStatement ps, String name, Counter counter)
            throws SQLException {
        ps.setString(1, source);
        ps.setLong(2, timestamp);
        ps.setString(3, name);
        ps.setLong(4, counter.getCount());
    }

    private void reportHistograms(final long timestamp, final SortedMap<String, Histogram> histograms) {
        Connection connection = null;
        PreparedStatement ps = null;
        PreparedStatement dps = null;
        try {
            connection = dataSource.getConnection();
            connection.setAutoCommit(false);
            ps = connection.prepareStatement(INSERT_HISTOGRAM_QUERY);
            dps = connection.prepareStatement(DELETE_HISTOGRAM_QUERY);

            for (Map.Entry<String, Histogram> entry : histograms.entrySet()) {
                String name = entry.getKey();
                Histogram histogram = entry.getValue();
                reportHistogram(timestamp, ps, name, histogram);
                ps.addBatch();

                delMetric(dps, name);
                dps.addBatch();
            }

            if (isDelOldData) {
                dps.executeBatch();
            }

            ps.executeBatch();
            connection.commit();
            dps.close();
            dps = null;
            ps.close();
            ps = null;
            connection.close();
            connection = null;
        } catch (SQLException e) {
            rollbackTransaction(connection);
            logger.error("Error when reporting histograms", e);
        } finally {
            closeQuietly(connection, ps, dps);
        }
    }

    private void reportHistogram(final long timestamp, PreparedStatement ps, String name, Histogram histogram)
            throws SQLException {
        final Snapshot snapshot = histogram.getSnapshot();

        ps.setString(1, source);
        ps.setLong(2, timestamp);
        ps.setString(3, name);
        ps.setLong(4, histogram.getCount());
        ps.setDouble(5, snapshot.getMax());
        ps.setDouble(6, snapshot.getMean());
        ps.setDouble(7, snapshot.getMin());
        ps.setDouble(8, snapshot.getStdDev());
        ps.setDouble(9, snapshot.getMedian());
        ps.setDouble(10, snapshot.get75thPercentile());
        ps.setDouble(11, snapshot.get95thPercentile());
        ps.setDouble(12, snapshot.get98thPercentile());
        ps.setDouble(13, snapshot.get99thPercentile());
        ps.setDouble(14, snapshot.get999thPercentile());
    }

    private void reportMeters(final long timestamp, final SortedMap<String, Meter> meters) {
        Connection connection = null;
        PreparedStatement ps = null;
        PreparedStatement dps = null;
        try {
            connection = dataSource.getConnection();
            connection.setAutoCommit(false);
            ps = connection.prepareStatement(INSERT_METER_QUERY);
            dps = connection.prepareStatement(DELETE_METER_QUERY);

            for (Map.Entry<String, Meter> entry : meters.entrySet()) {
                String name = entry.getKey();
                Meter meter = entry.getValue();
                reportMeter(timestamp, ps, name, meter);
                ps.addBatch();

                delMetric(dps, name);
                dps.addBatch();
            }

            if (isDelOldData) {
                dps.executeBatch();
            }

            ps.executeBatch();
            connection.commit();
            dps.close();
            dps = null;
            ps.close();
            ps = null;
            connection.close();
            connection = null;
        } catch (SQLException e) {
            rollbackTransaction(connection);
            logger.error("Error when reporting meters", e);
        } finally {
            closeQuietly(connection, ps, dps);
        }
    }

    private void reportMeter(final long timestamp, PreparedStatement ps, String name, Meter meter) throws SQLException {
        ps.setString(1, source);
        ps.setLong(2, timestamp);
        ps.setString(3, name);
        ps.setLong(4, meter.getCount());
        ps.setDouble(5, convertRate(meter.getMeanRate()));
        ps.setDouble(6, convertRate(meter.getOneMinuteRate()));
        ps.setDouble(7, convertRate(meter.getFiveMinuteRate()));
        ps.setDouble(8, convertRate(meter.getFifteenMinuteRate()));
        ps.setString(9, String.format("events/%s", getRateUnit()));
    }

    private void reportTimers(final long timestamp, final SortedMap<String, Timer> timers) {
        Connection connection = null;
        PreparedStatement ps = null;
        PreparedStatement dps = null;
        try {
            connection = dataSource.getConnection();
            connection.setAutoCommit(false);
            ps = connection.prepareStatement(INSERT_TIMER_QUERY);
            dps = connection.prepareStatement(DELETE_TIMER_QUERY);

            for (Map.Entry<String, Timer> entry : timers.entrySet()) {
                String name = entry.getKey();
                Timer timer = entry.getValue();
                reportTimer(timestamp, ps, name, timer);
                ps.addBatch();

                delMetric(dps, name);
                dps.addBatch();
            }

            if (isDelOldData) {
                dps.executeBatch();
            }

            ps.executeBatch();
            connection.commit();
            dps.close();
            dps = null;
            ps.close();
            ps = null;
            connection.close();
            connection = null;
        } catch (SQLException e) {
            rollbackTransaction(connection);
            logger.error("Error when reporting timers", e);
        } finally {
            closeQuietly(connection, ps, dps);
        }
    }

    private void reportTimer(final long timestamp, PreparedStatement ps, String name, Timer timer) throws SQLException {
        final Snapshot snapshot = timer.getSnapshot();

        ps.setString(1, source);
        ps.setLong(2, timestamp);
        ps.setString(3, name);
        ps.setLong(4, timer.getCount());
        ps.setDouble(5, convertDuration(snapshot.getMax()));
        ps.setDouble(6, convertDuration(snapshot.getMean()));
        ps.setDouble(7, convertDuration(snapshot.getMin()));
        ps.setDouble(8, convertDuration(snapshot.getStdDev()));
        ps.setDouble(9, convertDuration(snapshot.getMedian()));
        ps.setDouble(10, convertDuration(snapshot.get75thPercentile()));
        ps.setDouble(11, convertDuration(snapshot.get95thPercentile()));
        ps.setDouble(12, convertDuration(snapshot.get98thPercentile()));
        ps.setDouble(13, convertDuration(snapshot.get99thPercentile()));
        ps.setDouble(14, convertDuration(snapshot.get999thPercentile()));
        ps.setDouble(15, convertRate(timer.getMeanRate()));
        ps.setDouble(16, convertRate(timer.getOneMinuteRate()));
        ps.setDouble(17, convertRate(timer.getFiveMinuteRate()));
        ps.setDouble(18, convertRate(timer.getFifteenMinuteRate()));
        ps.setString(19, String.format("calls/%s", getRateUnit()));
        ps.setString(20, getDurationUnit());
    }

    private void rollbackTransaction(Connection connection) {
        if (connection != null) {
            try {
                connection.rollback();
            } catch (SQLException e) {
                if (logger.isWarnEnabled()) {
                    logger.warn("Error when rolling back the transaction", e);
                }
            }
        }
    }

    private void closeQuietly(Connection connection, PreparedStatement ps, PreparedStatement dps) {
        if (ps != null) {
            try {
                ps.close();
            } catch (SQLException e) {
                // Ignore
            }
        }
        if (dps != null) {
            try {
                dps.close();
            } catch (SQLException e) {
                // Ignore
            }
        }
        if (connection != null) {
            try {
                connection.close();
            } catch (SQLException e) {
                // Ignore
            }
        }
    }
}

done

学习:blog.csdn.net/tracymkgld/article/details/51899721

　　http://blog.csdn.net/wzygis/article/details/52789105