How to programmatically enable Spring Boot Actuator metrics for Spring MVC? - spring

Question

I want to programmatically enable Spring Boot Actuator metrics for Spring MVC (using Spring Boot 2.6.3).
I can put
management.metrics.web.server.request.autotime.enabled=true in the application.properties file to achieve this.
But I do not like .properties files for multiple reasons. I'd rather do it in code while defining my MeterRegistry bean.
Right now, my metrics configuration looks like this:
#Configuration
public class MetricsConfig {
#Value("${spring.profiles.active:default}")
private String activeProfile;
#Bean
public PrometheusMeterRegistry prometheusMeterRegistry() {
var config = new CustomPrometheusConfig(Duration.ofSeconds(10));
var registry = new PrometheusMeterRegistry(config);
registry.config()
.meterFilter(new AddPrefixMeterFilter("my."))
.meterFilter(new DistributionSummaryFilter())
.commonTags(
"instance", StringUtils.defaultString(System.getenv("HOSTNAME"), "no-hostname"),
"env", activeProfile)
.namingConvention(PrometheusNamingConvention.snakeCase);
new JvmMemoryMetrics().bindTo(registry);
new JvmThreadMetrics().bindTo(registry);
new JvmGcMetrics().bindTo(registry);
new JvmHeapPressureMetrics().bindTo(registry);
new LogbackMetrics().bindTo(registry);
return registry;
}
#Bean
public TimedAspect timedAspect(MeterRegistry registry) {
return new TimedAspect(registry);
}
public static class AddPrefixMeterFilter implements MeterFilter {
private final String prefix;
public AddPrefixMeterFilter(String prefix) {
this.prefix = prefix;
}
#NotNull
#Override
public Meter.Id map(Meter.Id id) {
return id.withName(prefix + id.getName());
}
}
public static class DistributionSummaryFilter implements MeterFilter {
#Override
public DistributionStatisticConfig configure(#NotNull Meter.Id id,
#NotNull DistributionStatisticConfig config) {
return DistributionStatisticConfig.builder()
.percentiles(0, 0.5, 0.95, 1)
.percentilesHistogram(true)
.build()
.merge(config);
}
}
public static class CustomPrometheusConfig implements PrometheusConfig {
private final Duration step;
private CustomPrometheusConfig(Duration step) {
this.step = step;
}
#NotNull
#Override
public Duration step() {
return step;
}
#NotNull
#Override
public HistogramFlavor histogramFlavor() {
return HistogramFlavor.VictoriaMetrics;
}
#Override
public String get(#NotNull String key) {
return null;
}
}
}