private void processRelationClientSide(MeterEntity entity) {
        ProcessRelationClientSideMetrics metrics = new ProcessRelationClientSideMetrics();
        metrics.setTimeBucket(TimeBucket.getMinuteTimeBucket(System.currentTimeMillis()));
        metrics.setServiceInstanceId(entity.serviceInstanceId());
        metrics.setSourceProcessId(entity.getSourceProcessId());
        metrics.setDestProcessId(entity.getDestProcessId());
        metrics.setEntityId(entity.id());
        metrics.setComponentId(entity.getComponentId());
        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