Package org.opennms.netmgt.dao.mock

Class MockRrdDao

java.lang.Object

org.opennms.netmgt.dao.mock.MockRrdDao

All Implemented Interfaces:

RrdDao

public class MockRrdDao
extends Object
implements RrdDao

Constructor Summary

Constructors

Constructor	Description
MockRrdDao()

Method Summary

Modifier and Type	Method	Description
InputStream	createGraph(String command)	Create an RRD graph with the given command where RRD files are relative to the workDir.
int	getGraphLeftOffset()	Gets the offset of the left side of the graph box from the left side of the image.
int	getGraphRightOffset()	Gets the offset of the right side of the graph box from the right side of the image.
int	getGraphTopOffsetWithText()	Gets the offset of the top of the graph box from the top of the image.
Double	getLastFetchValue(OnmsAttribute attribute, int interval)	This method issues an round robin fetch command to retrieve the last value of the data source stored in the specified RRD file.
Double	getLastFetchValue(OnmsAttribute attribute, int interval, int range)	This method issues an round robin fetch command to retrieve the last value of the data source stored in the specified RRD file.
double	getPrintValue(OnmsAttribute attribute, String cf, long start, long end)	Get the value for an attribute over a period of time.
double[]	getPrintValues(OnmsAttribute attribute, String rraConsolidationFunction, long startTimeInMillis, long endTimeInMillis, String... printFunctions)	Get the value for an attribute over a period of time.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MockRrdDao

public MockRrdDao()

Method Detail

getPrintValue

public double getPrintValue(OnmsAttribute attribute,
                            String cf,
                            long start,
                            long end)

Description copied from interface: RrdDao

Get the value for an attribute over a period of time.

Specified by:

getPrintValue in interface RrdDao

Parameters:

attribute - the attribute

cf - consolidation function (usually "AVERAGE")

start - start time in milliseconds

end - end time in milliseconds

Returns:

value

getPrintValues

public double[] getPrintValues(OnmsAttribute attribute,
                               String rraConsolidationFunction,
                               long startTimeInMillis,
                               long endTimeInMillis,
                               String... printFunctions)

Description copied from interface: RrdDao

Get the value for an attribute over a period of time.

Specified by:

getPrintValues in interface RrdDao

Parameters:

attribute - the attribute

rraConsolidationFunction - consolidation function (usually "AVERAGE")

startTimeInMillis - start time in milliseconds

endTimeInMillis - end time in milliseconds

printFunctions - a String object.

Returns:

value

createGraph

public InputStream createGraph(String command)

Description copied from interface: RrdDao

Create an RRD graph with the given command where RRD files are relative to the workDir.

Specified by:

createGraph in interface RrdDao

Parameters:

command - RRD graph command

Returns:

PNG graph image

getGraphTopOffsetWithText

public int getGraphTopOffsetWithText()

Description copied from interface: RrdDao

Gets the offset of the top of the graph box from the top of the image.

Specified by:

getGraphTopOffsetWithText in interface RrdDao

Returns:

offset in pixels

getGraphLeftOffset

public int getGraphLeftOffset()

Description copied from interface: RrdDao

Gets the offset of the left side of the graph box from the left side of the image.

Specified by:

getGraphLeftOffset in interface RrdDao

Returns:

offset in pixels

getGraphRightOffset

public int getGraphRightOffset()

Description copied from interface: RrdDao

Gets the offset of the right side of the graph box from the right side of the image.

Specified by:

getGraphRightOffset in interface RrdDao

Returns:

offset in pixels

getLastFetchValue

public Double getLastFetchValue(OnmsAttribute attribute,
                                int interval)
                         throws org.springframework.dao.DataAccessException

Description copied from interface: RrdDao

This method issues an round robin fetch command to retrieve the last value of the data source stored in the specified RRD file. NOTE: This method assumes that each RRD file contains a single data source.

Specified by:

getLastFetchValue in interface RrdDao

Parameters:

attribute - The attribute for which fetch the last value. Must be a RrdGraphAttribute.

interval - Fetch interval. This should equal RRD step size.

Returns:

Retrived value or null if some errors occur

Throws:

org.springframework.dao.DataAccessException - if an error occurs retrieving the last value

getLastFetchValue

public Double getLastFetchValue(OnmsAttribute attribute,
                                int interval,
                                int range)
                         throws org.springframework.dao.DataAccessException

Description copied from interface: RrdDao

This method issues an round robin fetch command to retrieve the last value of the data source stored in the specified RRD file. NOTE: This method assumes that each RRD file contains a single data source.

Specified by:

getLastFetchValue in interface RrdDao

Parameters:

attribute - The attribute for which fetch the last value. Must be a RrdGraphAttribute.

interval - Fetch interval in milliseconds. This should equal the RRD step size.

range - Interval in milliseconds for how long we should look back in time for a non-NaN value. This should a multiple of the RRD step size.

Returns:

Retrived value or null if some errors occur

Throws:

org.springframework.dao.DataAccessException - if an error occurs retrieving the last value