学习Hikaricp，发现不少metrics相关源代码，网上没有找到相关使用的代码

以下程序实现Hikaricp连接mysql，prometheus http输出，

可以将数据被prometheus服务器接收，

配置grafana展现

注释部分为console输出方式

HikariConfig config = new HikariConfig();

config.setMinimumIdle(10);

config.setMaximumPoolSize(200);

config.setConnectionTestQuery("SELECT 1");

config.setDriverClassName("com.mysql.jdbc.Driver");

config.setJdbcUrl("jdbc:mysql://localhost:3306/world");

config.setUsername("root");

config.setPassword("chen5034");

config.setRegisterMbeans(true);

/*metrics

MetricRegistry mr = new MetricRegistry();

config.setMetricRegistry(mr);

ConsoleReporter cr = ConsoleReporter.forRegistry(mr).build();

cr.start(5, TimeUnit.SECONDS);

*/

HTTPServer srv = null;

CollectorRegistry cr = new CollectorRegistry();

PrometheusMetricsTrackerFactory pmtf = new PrometheusMetricsTrackerFactory(cr);

config.setMetricsTrackerFactory(pmtf);

try {

srv = new HTTPServer(new InetSocketAddress(9026), cr);

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

HikariDataSource dataSource = new HikariDataSource(config);

JdbcTemplate jt = new JdbcTemplate(dataSource);

for (int i = 1; i < 100; i++) {

String out = jt.queryForObject("select Name from city where id = "+i, String.class);

System.out.println("Name : " + out + " of id=" + i);

try {

Thread.sleep(10*1000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

srv.stop();