blueflood-core/src/main/java/com/rackspacecloud/blueflood/utils/RollupUtils.java
public static AbstractMetricsRW getMetricsRWForRollupType(RollupType rollupType) {
        if (rollupType == null || rollupType == RollupType.BF_BASIC ) {
            return IOContainer.fromConfig().getBasicMetricsRW();
        } else {
            return IOContainer.fromConfig().getPreAggregatedMetricsRW();
        }
    }
public static AbstractMetricsRW getMetricsRWForRollupType(RollupType rollupType) {
        if (rollupType == null || rollupType == RollupType.BF_BASIC ) {
            return IOContainer.fromConfig().getBasicMetricsRW();
        } else {
            return IOContainer.fromConfig().getPreAggregatedMetricsRW();
        }
    }
For a particular rollupType, determine what is the proper class to do
read/write with and return that

@param rollupType
@return