Spring Sentry Integration. Event processor doesn't work (prevent health check)

user_2280027 0
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I need to prevent sending some events by condition. (health check)

I'm using spring libraries:

implementation "io.sentry:sentry-spring-boot-starter:5.4.1"
implementation "io.sentry:sentry-logback:5.4.1"

It works, sentry has a lot of transactions etc. The configuration is:

sentry:
  dsn: https://....ingest.sentry.io/....
  traces-sample-rate: 1.0

I'm going to prevent some events which has health check data using event processor: https://docs.sentry.io/platforms/java/guides/spring-boot/advanced-usage/#registering-custom-event-processor

@Component
public class SentryCallbackExtension implements EventProcessor {

    @Value("${app.sentry.exclude.transactions}")
    private List<String> excludes;

    @Override
    public @Nullable SentryEvent process(@NotNull SentryEvent event, @Nullable Object hint) {
        return StringUtils.containsAnyIgnoreCase(
            event.getTransaction(), excludes.toArray(new String[0])
        ) ? null : event;
    }
}

Configuration for this block is:

app:
  sentry:
    exclude:
      transactions: "/actuator/health"

And it doesn't work. There are a lot of health check events in sentry service. enter image description here

sentry log4j logging spring java
2 Answers

I used TracesSamplerCallback (https://docs.sentry.io/platforms/java/guides/spring-boot/configuration/filtering/#using-sampling-to-filter-transaction-events) and it helps. It can prevent all events/transactions (not only custom from application).

@Component
public class SentryTraceSamplerCallback implements TracesSamplerCallback {

    /**
     * Excludes transaction paths
     */
    @Value("${tn.sentry.exclude.transactions}")
    private List<String> excludes;

    @Override
    @SuppressWarnings("ConstantConditions")
    public @Nullable Double sample(@NotNull SamplingContext context) {
        HttpServletRequest request = (HttpServletRequest) context.getCustomSamplingContext().get("request");
        String url = request.getRequestURI();
        return StringUtils.containsAnyIgnoreCase(url, this.excludes.toArray(String[]::new)) ? 0.0D : 1.0D;
    }
}

enter image description here

user_22800270

EventProcessor interface has two methods:

  • SentryEvent process(SentryEvent event, Object hint) - for processing events
  • SentryTransaction process(SentryTransaction transaction, Object hint) - for processing transactions

Since you want to filter out transactions created from requests to the health endpoint, you need to implement the second method that takes SentryTransaction as the first parameter.

user_11604450
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