如何在Spring Boot应用程序中配置HikariCP和Dropwizard/Coda-Hale指标

Question

阅读关于如何启用Dropwizard指标的HikariCP wiki上的说明,它说只需在HikariConfig或HikariDatasource中配置MetricsRegistry实例.问题是,在Spring Boot中,所有配置都由自动配置处理,因此我根本不会手动配置HikariCP池.有关如何执行此操作的任何说明？我是否必须通过定义自己的bean并在@Configuration文件中设置所有设置来完全覆盖自动配置？

Answer 1

所以我能够通过在java配置文件中手动配置HikariCP来解决这个问题.这让我得到了Spring Boot MetricRegistry的引用,然后我可以在HikariConfig中设置它.这是我的配置类:

@Configuration
public class DatasourceConfiguration {

    @Value("${spring.datasource.username}")
    private String user;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.url}")
    private String dataSourceUrl;

    @Value("${spring.datasource.driverClassName}")
    private String driverClassName;

    @Value("${spring.datasource.connectionTestQuery}")
    private String connectionTestQuery;

    @Autowired
    private MetricRegistry metricRegistry;

    @Bean
    public DataSource primaryDataSource() {
        Properties dsProps = new Properties();
        dsProps.setProperty("url", dataSourceUrl);
        dsProps.setProperty("user", user);
        dsProps.setProperty("password", password);

        Properties configProps = new Properties();
        configProps.setProperty("connectionTestQuery", connectionTestQuery);
        configProps.setProperty("driverClassName", driverClassName);
        configProps.setProperty("jdbcUrl", dataSourceUrl);

        HikariConfig hc = new HikariConfig(configProps);
        hc.setDataSourceProperties(dsProps);
        hc.setMetricRegistry(metricRegistry);
        return new HikariDataSource(hc);
    }
}

Answer 2

或者让Spring Boot在@ Configuration/@ SpringBootApplication类中配置您的数据源@Autowire DataSource和MetricRegistry,并在@PostConstruct中将它们连接在一起:

@Autowired
private DataSource dataSource;

@Autowired
private MetricRegistry metricRegistry;


@PostConstruct
public void setUpHikariWithMetrics() {
    if(dataSource instanceof HikariDataSource) {
        ((HikariDataSource) dataSource).setMetricRegistry(metricRegistry);
    }
}