public static MeterEntity newServiceInstance(String serviceName, String serviceInstance, Layer layer, Map<String, String> properties) {
        final MeterEntity meterEntity = new MeterEntity();
        meterEntity.scopeType = ScopeType.SERVICE_INSTANCE;
        meterEntity.serviceName = NAMING_CONTROL.formatServiceName(serviceName);
        meterEntity.instanceName = NAMING_CONTROL.formatInstanceName(serviceInstance);
        meterEntity.instanceProperties = properties;
        meterEntity.layer = layer;
        return meterEntity;
    }
Create a service instance level meter entity.
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/meter/MeterEntity.java