private void serviceRelationServerSide(MeterEntity entity) {
        ServiceRelationServerSideMetrics metrics = new ServiceRelationServerSideMetrics();
        metrics.setTimeBucket(TimeBucket.getMinuteTimeBucket(System.currentTimeMillis()));
        metrics.setSourceServiceId(entity.sourceServiceId());
        metrics.setDestServiceId(entity.destServiceId());
        metrics.getComponentIds().add(entity.getComponentId());
        metrics.setEntityId(entity.id());
        MetricsStreamProcessor.getInstance().in(metrics);
    }
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