private void serviceRelationTraffic(MeterEntity entity) {
        switch (entity.getDetectPoint()) {
            case SERVER:
                entity.setServiceName(entity.getDestServiceName());
                toService(requireNonNull(entity.getDestServiceName()), entity.getLayer());
                serviceRelationServerSide(entity);
                break;
            case CLIENT:
                entity.setServiceName(entity.getSourceServiceName());
                toService(requireNonNull(entity.getSourceServiceName()), entity.getLayer());
                serviceRelationClientSide(entity);
                break;
            default:
        }
    }
analyse intends to parse expression with input samples to meter-system metrics.

@param sampleFamilies input samples.
oap-server/analyzer/meter-analyzer/src/main/java/org/apache/skywalking/oap/meter/analyzer/Analyzer.java