C# Class GrafanaAdapters.AnnotationExtensions

Grafana Annotation extensions class.

Public Methods

Method	Description
ExtractQueryRequest ( this request, IEnumerable targets, int maxDataPoints ) : GrafanaAdapters.QueryRequest	Extracts a Grafana QueryRequest from an AnnotationRequest.
IsApplicable ( this type, double datapoint ) : bool	Determines if the data point is applicable for specified annotation type.
ParseQueryType ( this annotation, bool &useFilterExpression ) : AnnotationType	Parses query expression from annotation for annotation type.
ParseSourceDefinitions ( this annotation, AnnotationType type, DataSet source, bool useFilterExpression ) : DataRow>.Dictionary	Parses source definitions for an annotation query.
PopulateResponse ( this type, GrafanaAdapters.AnnotationResponse response, string target, DataRow definition, double datapoint, DataSet source ) : void	Populates an annotation response title, text and tags for specified annotation type.
TableName ( this type ) : string	Gets table name for specified annotation type.
TargetFieldName ( this type ) : string	Gets the target field name for Guid based point IDs for table used with specified annotation type.

Method	Description
GetAlarmCondition ( DataRow defintion ) : string
GetMetaData ( DataSet source, string table, string expression ) : DataRow
GetTargetFromGuid ( string guidID ) : MeasurementKey
GetTargetMetaData ( DataSet source, object value ) : DataRow
KeyFromTag ( this pointTag, DataSet source ) : MeasurementKey	Looks up measurement key from point tag. This function uses the DataTable.Select(string) function which uses a linear search algorithm that can be slow for large data sets, it is recommended that any results for calls to this function be cached to improve performance.
TagFromKey ( this key, DataSet source ) : string	Looks up point tag from measurement key value. This function uses the DataTable.Select(string) function which uses a linear search algorithm that can be slow for large data sets, it is recommended that any results for calls to this function be cached to improve performance.
Translate ( this tableName ) : string

Extracts a Grafana QueryRequest from an AnnotationRequest.

public static ExtractQueryRequest ( this request, IEnumerable targets, int maxDataPoints ) : GrafanaAdapters.QueryRequest
request	this	Annotation request.
targets	IEnumerable	List of desired targets.
maxDataPoints	int	Maximum points to return.
return	GrafanaAdapters.QueryRequest

Determines if the data point is applicable for specified annotation type.

public static IsApplicable ( this type, double datapoint ) : bool
type	this	Annotation type.
datapoint	double	Time series values data point.
return	bool

Parses query expression from annotation for annotation type.

public static ParseQueryType ( this annotation, bool &useFilterExpression ) : AnnotationType
annotation	this	Grafana annotation.
useFilterExpression	bool	Determines if query is using a filter expression.
return	AnnotationType

Parses source definitions for an annotation query.

public static ParseSourceDefinitions ( this annotation, AnnotationType type, DataSet source, bool useFilterExpression ) : DataRow>.Dictionary
annotation	this	Grafana annotation.
type	AnnotationType	Annotation type.
source	System.Data.DataSet	Metadata of source definitions.
useFilterExpression	bool	Determines if query is using a filter expression.
return	DataRow>.Dictionary

Populates an annotation response title, text and tags for specified annotation type.

public static PopulateResponse ( this type, GrafanaAdapters.AnnotationResponse response, string target, DataRow definition, double datapoint, DataSet source ) : void
type	this	Annotation type.
response	GrafanaAdapters.AnnotationResponse	Annotation response.
target	string	Target of annotation response.
definition	System.Data.DataRow	Associated metadata definition for response.
datapoint	double	Time series values data point for response.
source	System.Data.DataSet	Metadata of source definitions.
return	void

Gets table name for specified annotation type.

public static TableName ( this type ) : string
type	this	Annotation type.
return	string

Gets the target field name for Guid based point IDs for table used with specified annotation type.

public static TargetFieldName ( this type ) : string
type	this	Annotation type.
return	string