Transformations: Cumulative and window modes for Add field from calculation (#77029)

* cumulative sum

* refactor and create new mode

* refactor - use reduceOptions for new mode also

* revert naming

* Add window function, rename statistical to cumulative (#77066)

* Add window function, rename statistical to cumulative

* Fix merge errors

* fix more merge errors

* refactor + add window funcs

Co-authored-by: Oscar Kilhed <oscar.kilhed@grafana.com>

* add ff + tests + centered moving avg

Co-authored-by: Oscar Kilhed <oscar.kilhed@grafana.com>

* make sum and mean cumulative more efficient (#77173)

* make sum and mean cumulative more efficient

* remove cumulative variance, add window stddev

* refactor window to not use reducer for mean. wip variance stdDev

* fix tests after optimization

---------

Co-authored-by: Victor Marin <victor.marin@grafana.com>

* optimize window func (#77266)

* make sum and mean cumulative more efficient

* remove cumulative variance, add window stddev

* refactor window to not use reducer for mean. wip variance stdDev

* fix tests after optimization

* fix test lint

* optimize window

* tests are passing

* fix nulls

* fix all nulls

---------

Co-authored-by: Victor Marin <victor.marin@grafana.com>

* change window size to be percentage

* fix tests to use percentage

* fixed/percentage window size (#77369)

* Add docs for cumulative and window functions of the add field from calculation transform. (#77352)

add docs

* splling

* change WindowType -> WindowAlignment

* update betterer

* refactor getWindowCreator

* add docs to content.ts

* add feature toggle message

---------

Co-authored-by: Oscar Kilhed <oscar.kilhed@grafana.com>

pkg/services/featuremgmt/registry.go

@@ -935,6 +935,13 @@ var (
 			FrontendOnly: true,
 			Owner:        grafanaObservabilityMetricsSquad,
 		},
+		{
+			Name:         "addFieldFromCalculationStatFunctions",
+			Description:  "Add cumulative and window functions to the add field from calculation transformation",
+			Stage:        FeatureStageExperimental,
+			FrontendOnly: true,
+			Owner:        grafanaBiSquad,
+		},
 		{
 			Name:        "alertmanagerRemoteSecondary",
 			Description: "Enable Grafana to sync configuration and state with a remote Alertmanager.",

pkg/services/featuremgmt/toggles_gen.csv

@@ -132,6 +132,7 @@ pluginsInstrumentationStatusSource,experimental,@grafana/plugins-platform-backen
 costManagementUi,experimental,@grafana/databases-frontend,false,false,false,false
 managedPluginsInstall,experimental,@grafana/plugins-platform-backend,false,false,false,false
 prometheusPromQAIL,experimental,@grafana/observability-metrics,false,false,false,true
+addFieldFromCalculationStatFunctions,experimental,@grafana/grafana-bi-squad,false,false,false,true
 alertmanagerRemoteSecondary,experimental,@grafana/alerting-squad,false,false,false,false
 alertmanagerRemotePrimary,experimental,@grafana/alerting-squad,false,false,false,false
 alertmanagerRemoteOnly,experimental,@grafana/alerting-squad,false,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -539,6 +539,10 @@ const (
 	// Prometheus and AI/ML to assist users in creating a query
 	FlagPrometheusPromQAIL = "prometheusPromQAIL"
 
+	// FlagAddFieldFromCalculationStatFunctions
+	// Add cumulative and window functions to the add field from calculation transformation
+	FlagAddFieldFromCalculationStatFunctions = "addFieldFromCalculationStatFunctions"
+
 	// FlagAlertmanagerRemoteSecondary
 	// Enable Grafana to sync configuration and state with a remote Alertmanager.
 	FlagAlertmanagerRemoteSecondary = "alertmanagerRemoteSecondary"