WebConfigurer.java 文件源码

/**
 * Initializes Metrics.
 */
private void initMetrics(ServletContext servletContext, EnumSet<DispatcherType> disps) {
    log.debug("Initializing Metrics registries");
    servletContext.setAttribute(InstrumentedFilter.REGISTRY_ATTRIBUTE,
        metricRegistry);
    servletContext.setAttribute(MetricsServlet.METRICS_REGISTRY,
        metricRegistry);

    log.debug("Registering Metrics Filter");
    FilterRegistration.Dynamic metricsFilter = servletContext.addFilter("webappMetricsFilter",
        new InstrumentedFilter());

    metricsFilter.addMappingForUrlPatterns(disps, true, "/*");
    metricsFilter.setAsyncSupported(true);

    log.debug("Registering Metrics Servlet");
    ServletRegistration.Dynamic metricsAdminServlet =
        servletContext.addServlet("metricsServlet", new MetricsServlet());

    metricsAdminServlet.addMapping("/management/metrics/*");
    metricsAdminServlet.setAsyncSupported(true);
    metricsAdminServlet.setLoadOnStartup(2);
}