org.opennms.netmgt.measurements.api

Interface MeasurementFetchStrategyProvider

All Known Implementing Classes:

JrobinFetchStrategyProvider, JRrd2FetchStrategyProvider, NewtsFetchStrategyProvider, RrdtoolXportFetchStrategyProvider

public interface MeasurementFetchStrategyProvider

Every MeasurementFetchStrategy implementation is represented by MeasurementFetchStrategyProvider, which can be used to determine whether or not it can fetch measurements for a given Time Series / RRD strategy combo. The MeasurementFetchStrategyProvider allows us to determine which (fetch) strategy to use, without needed to actually instantiate the implementation classes, since these may have dependencies which are not available on the current class-path.

Author:

Jesse White

Method Summary

Modifier and Type	Method and Description
Class<? extends MeasurementFetchStrategy>	getStrategyClass(String timeSeriesStrategyName, String rrdStrategyClass) Returns a reference to an implementation of MeasurementFetchStrategy that supports retrieving measurements for the given Time Series / RRD Strategy.

Method Detail

getStrategyClass

Class<? extends MeasurementFetchStrategy> getStrategyClass(String timeSeriesStrategyName,
                                                           String rrdStrategyClass)

Returns a reference to an implementation of MeasurementFetchStrategy that supports retrieving measurements for the given Time Series / RRD Strategy.

Parameters:

timeSeriesStrategyName - name of the time series strategy

rrdStrategyClass - canonical name of the RrdStrategy implementation

Returns:

null or a reference to a supported implementation