Factry Historian Datasource for Grafana

always check the compatibility matrix below before installing a new version compatibility matrix this is the compatibility matrix for version listed on this page if you have downloaded a newer version than the one listed on this page please check the release notes of that version historian grafana datasource version compatible factry historian versions <= v1 2 x <= v6 3 x >= v2 x > v6 3 v2 3 1 released 11/08/2025 bug fixes fixed dashboard variables of type event property values not being migrated correctly and breaking dashboards v2 3 0 released 27/06/2025 migrating from an older version to v2 3 0 has the possibility to break dashboards that have variables of type event property values to mitigate, upgrade to v2 3 1 or later changes changed minimum grafana version to 10 4 0 added support for time weighted average aggregation for historian version v7 3 0 and later if no asset properties are selected in the assets query editor or in the events query editor, the query will now return data for all asset properties instead of no asset properties changed default unit for event duration column to use dtdhms format refresh data from factry historian when opening a selection field instead of only on dashboard load added keyword and datatype filter for asset property variable query editor debounce keyword searches in variable query editors to reduce query load show asset path in asset property variable query editor to help distinguish between properties on assets with the same name but different paths added a configurable limit to the events query editor to limit the amount of events returned, default is 1000, 0 means no limit allow to select which parent event properties to include in the result and allow to filter on them added event duration filter to the event query editor, also works with parent events allow use of dashboard variables in measurement regex queries moved settings related to aggregations and grouped them together added filtering on datatypes for measurement, asset property and event type property queries added an override time range option to the event query editor enabled support for sql expressions filter out selected event types and asset properties when changing the selected assets add the option to override assets to select asset properties on in the event query editor bug fixes fixed multi value filter for the event property values query updating the selected databases in a measurement query will now correctly update the available measurements fixed the display name for raw queries fixed an issue when selecting parent event properties in the event query editor don't show an error if the query returns no results fixed uom not being set for asset properties in event queries fixed the use of dashboard variables in event property values variable queries fixed a potential panicy race condition in the query handler that could be triggered by executing multiple queries v2 2 0 released 22/02/2025 changes introduced the ability to include parent event information in event queries implemented support for event property value filters compatible with v7 2 0 added an option to only return changed values in measurement queries added support for event properties with dimensions in event queries description of measurements and or asset properties are now available as labels in query results bug fixes checked the validity of regular expressions before sending them to the historian fixed issues with custom interval selection in the event query fixed an issue where modifying a duplicated panel could impact the original panel v2 1 0 released 18/11/2024 bug fixes resolved issue where only one result was returned when multiple assets were queried in the asset property query corrected results for asset property queries using a regular expression ensured re rendering after mount completion in the query editor fixed saving of grafana variables in annotation queries addressed issue where aggregation reset to 'last' instead of clearing changes enabled aggregation over the entire time period of a dashboard added variable query for distinct event property values (requires historian > v7 2 0) introduced support for value filters in time series queries (requires historian > v7 1 0) v2 0 4 released 26/09/2024 changes fixed logo in the readme the datasource now detects the running version of the historian and adapts to the available features error messages are now more descriptive enhanced units for event duration bug fixes resolved styling issue with the dropdown cascader in the asset property query editor resolved an issue where the repeat by variable feature was malfunctioning v2 0 3 released 02/08/2024 changes fixed filtering of event types in the event query when using a regular expression for the assets fixed event queries when filtering on multiple statuses v2 0 2 released 04/07/2024 changes added 'first', 'last' and 'count' as aggregation options for array datatypes fixed event property type selection fixed broken link in the readme reworked introduction in the readme v2 0 1 changes pass datasource request context to the historian client automatic instance management for data source removed pprof code v2 0 0 changes enabled annotations for events added dashboard variable query editors for measurement, databases, assets, asset properties, event types and event type properties improved support for dashboard variables can use everywhere where it makes sense multi value supported reworked measurement selection, using a regular expression is now a toggle fetch tag keys/values from the historian support periodic values in the event query optionally query asset properties in the event query improved error handling