How can I add annotations into a Grafana chart from a spreadsheet?

If I have a spreadsheet with date, time and description, how can I add annotations into Grafana for each date/time row in the spreadsheet?


As far as I know, there is no existing datasource that reads spreadsheet and supports annotations queries. The only workaround I see is to build your own little program that reads your file and use the Annotation API to create new annotations.