Run a function with a SecureSession that closes itself

Starts a SecureSession, passes it to fn, and closes it when fn returns or fails. Use it when you want several calls to share one session, for example to build up variables across calls, without having to remember to close it.

Usage

with_secure_session(fn, tools = list(), sandbox = TRUE, ...)

Arguments

fn

A function that receives a SecureSession as its first argument.

tools

List of securer_tool() objects to register in the session.

sandbox

Logical, whether to enable OS-level sandboxing (default TRUE).

...

Additional arguments passed to SecureSession$new().

Value

The return value of fn(session).

Examples

# \donttest{
# Run multiple commands on the same session
result <- with_secure_session(function(session) {
  session$execute("x <- 10")
  session$execute("x * 2")
}, sandbox = FALSE)

# With tools
result <- with_secure_session(
  fn = function(session) {
    session$execute("add(2, 3)")
  },
  tools = list(
    securer_tool("add", "Add two numbers",
      fn = function(a, b) a + b,
      args = list(a = "numeric", b = "numeric"))
  ),
  sandbox = FALSE
)
# }