Class SlaCalculationService

java.lang.Object

com.nmontytskyi.monitoring.server.sla.SlaCalculationService

@Service
public class SlaCalculationService
extends Object

Computes SLA compliance reports for registered microservices.

Only reads data — alert logic remains in AlertEvaluationService. For each call it:

1. resolves the requested time window (e.g. last 24 hours),
2. queries aggregate counters and percentiles from metric_records,
3. builds a SlaReport with actual values and compliance flags.

When no SlaDefinitionEntity has been created for the service, SlaDefinition.defaults() is used (99.9% uptime, 1 000 ms, 5% errors).

Constructor Summary

Constructors

Constructor	Description
SlaCalculationService()

Method Summary

Modifier and Type	Method	Description
SlaReport	calculate(Long serviceId, SlaWindow window)	Calculates an SLA report for the given service over the specified window.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SlaCalculationService

public SlaCalculationService()

Method Details

calculate

@Transactional(readOnly=true)
public SlaReport calculate(Long serviceId,
 SlaWindow window)

Calculates an SLA report for the given service over the specified window.

Parameters:

serviceId - identifier of the registered service

window - time window over which to aggregate metrics

Returns:

a fully populated SlaReport

Throws:

ServiceNotFoundException - if no service exists with serviceId