System Information

R Versions Available to Posit Connect

This recipe compares your local R version against the R installations available on your Posit Connect server. It uses the GET /v1/server_settings/r endpoint to obtain the R installations available to Posit Connect.

Tip

Use the Content Runtimes recipe to enumerate the R and Python versions used by content deployed to your Posit Connect server.

Workflow

1. Obtain the Posit Connect server URL and API Key from environment variables.
2. Obtain your local R version using R.version.
3. Retrieve the R installation info with the GET /v1/server_settings/r endpoint.
4. Parse the response using httr::content.
5. Check the response for the local R version. If it is not listed, the Posit Connect server does not contain the local R version.

Here is an example of the workflow:

library(httr)

# The connectServer URL must have a trailing slash.
connectServer <- Sys.getenv("CONNECT_SERVER")
connectAPIKey <- Sys.getenv("CONNECT_API_KEY")

myRVersion <- paste(R.version$major, R.version$minor, sep = ".")
resp <- GET(
  paste0(connectServer, "__api__/v1/server_settings/r"),
  add_headers(Authorization = paste("Key", connectAPIKey))
)
payload <- content(resp, as = "parsed", simplifyVector = TRUE)
if (myRVersion %in% payload$installations$version) {
  print("The local R version was found on the Posit Connect server")
} else {
  print(paste("Cannot find R version", myRVersion,"on the Posit Connect server"))
}

R Versions Available on Content Execution Images

Note

This section describes a feature that is currently in beta. If you are not sure if this applies to you, please speak with your administrator.

If your Posit Connect installation uses off-host content execution with Kubernetes, Connect will be configured with one or more images which may include different versions of R.

This recipe compares your local R version against the R installations available on your Posit Connect server's configured images. It uses the GET /v1/server_settings/r endpoint to obtain the R installations available to Posit Connect, and find which images they are available on. You can use the same pattern to search for python or quarto installations.

Workflow

1. Obtain the Posit Connect server URL and API Key from environment variables.
2. Obtain your local R version using R.version.
3. Retrieve the R installation info with the GET /v1/server_settings/r endpoint.
4. Parse the response using httr::content.
5. Check the response for the local R version. If it is not listed, the Posit Connect server's images do not contain the local R version.

Here is an example of the workflow:

library(httr)

# The connectServer URL must have a trailing slash.
connectServer <- Sys.getenv("CONNECT_SERVER")
connectAPIKey <- Sys.getenv("CONNECT_API_KEY")

myRVersion <- paste(R.version$major, R.version$minor, sep = ".")
resp <- GET(
  paste0(connectServer, "__api__/v1/server_settings/r"),
  add_headers(Authorization = paste("Key", connectAPIKey))
)
payload <- content(resp, as = "parsed", simplifyVector = TRUE)
installations <- payload$installations
matching <- installations[ installations$version == myRVersion, ]
if (nrow(matching) > 0) {
  print("The local R version was found in the following images:")
  for (image_name in matching$image_name) {
    print(image_name)
  }
} else {
  print(paste("Cannot find R version", myRVersion,"in any available images"))
}