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rrstudioshiny-servershiny

Shiny app run well in Rstudio but file not found error shiny-server

I have a problem with my shiny app.The app file structure is like following:

/srv/shiny-server/brand/
├── data
│   ├── MDBrand.txt
│   ├── MMBrand.txt
├── helpers.R
├── js
├── server.R
└── ui.R

In helpers.R, I write a function. 

puncDataToFrame <- function(file){
  rawData<- as.data.frame(fread(file, sep = "\t", header = F))
  data <- .....some process....
  return(data)
}

In server.R, the path is like that

 setwd("/srv/shiny-server/brand")
source("./helpers.R")
file1 <- "./data/MDBrand.txt"
file2 <- "./data/MMBrand.txt"
brandMonthlyUserByDay <- puncDataToFrame(file1)
brandMonthlyUserByMonth <- puncDataToFrame(file2)

When I open the server.R in Rstudio and click runApp. Everything works well.But When I run it in the shiny-server, there is always an error like that:

 Error in fread(file, sep = "\t", header = F) : 
  file not found: ./data/MDBrand.txt

But the file is indeed there. BTW: Each txt file is about 30M. I don't know whether the file size have an affect.

And I'm sure the shiny-server configuration is correct. Because I've run some other apps properly in this shiny-server.

Solution

  • I believe this is happening because of permissioning available to the server (third person/guest) on the folder and file where the file is stored. if you change the guest permission settings on the data folder, it should resolve the issue.

    Sarang