R Shiny: reload a .Rda file within shiny at a special time of the day

Question

I wrote a shiny script which loads a Rda-File just at the initial execution. This Rda-file gets updated by an external process. How can I reload the Rda file when it was changed or how can I relaod the .Rda file at a special time, for instance every day at 6 am.

I guess I can use the reactiveTimer function and if-clause with Sys.time(), but I don't know how.

Thanks a lot for your ideas.

update, thanks to @jdharrison:

I tried the function reactiveFileReader and my server.R Skript looks like this:

fileData <- reactiveFileReader(10000, session = NULL, filePath = "../data/myData.Rda", load)
 shinyServer(function(input, output, session) {
   output$mytable <- renderDataTable({
     fileData()
     myData # this is the name of the R-Object I loaded
   })
 })

Unfortunately I always get the error message : mydata not found

How can I use the data which loaded with the reactiveFileReader function?

Answer 1

One solution is quite simple: just add envir = .GlobalEnv

fileData <- reactiveFileReader(10000, session = NULL, filePath = "../data/myData.Rda", load, envir = .GlobalEnv)