MetricsService.java 文件源码

private void initDiscordHealthChecks() {
    healthCheckRegistry.register(MetricNames.HEALTH_DISCORD_WS, new HealthCheck() {
        @Override
        protected Result check() throws Exception {
            Counter restartCounter = metricRegistry.counter(MetricNames.DISCORD_WS_RESTARTS);
            Optional<Incident> incident = incidentService.getLastIncidentFromGroup(IncidentService.DISCORD_RESTART);
            ZonedDateTime time = incident.isPresent() ? incident.get().getCreatedDate() : null;
            String reason = incident.isPresent() ? incident.get().getName() : null;
            long restarts = restartCounter.getCount();
            if (restarts > 0) {
                return Result.unhealthy(String.format("%d restart%s, last one on %s (%s)",
                    restarts, restarts == 1 ? "" : "s", time, reason));
            } else {
                return Result.healthy("OK");
            }
        }
    });
}