Create, register, list, and remove 'RAVE' sessions

Usage

new_session(update = FALSE)

use_session(x)

launch_session(
  x,
  host = "127.0.0.1",
  port = NULL,
  modules = NULL,
  options = list(jupyter = TRUE, jupyter_port = NULL, as_job = TRUE, launch_browser =
    TRUE, single_session = FALSE, page_title = NULL, sidebar_open = TRUE)
)

session_getopt(keys, default = NA, namespace = "default")

session_setopt(..., .list = NULL, namespace = "default")

remove_session(x)

remove_all_sessions()

list_session(path = session_root(), order = c("none", "ascend", "descend"))

start_session(
  session,
  new = NA,
  modules = NULL,
  page_title = NULL,
  sidebar_open = TRUE,
  host = "127.0.0.1",
  port = NULL,
  jupyter = NA,
  jupyter_port = NULL,
  as_job = TRUE,
  launch_browser = TRUE,
  single_session = FALSE
)

shutdown_session(
  returnValue = invisible(NULL),
  jupyter = TRUE,
  session = shiny::getDefaultReactiveDomain()
)

session_log(x, max_lines = 200, modules = NULL)

Arguments

update: logical, whether to update to latest 'RAVE' template
host: host 'IP' address, default is 'localhost'
port: port to listen
modules: selected module ID to launch; used to only show a subset of modules; default is NULL (select all modules); hidden modules are always selected
options: additional options, including jupyter, jupyter_port, as_job, and launch_browser
keys: vector of characters, one or more keys of which the values should be obtained
default: default value if key is missing
namespace: namespace of the option; default is 'default'
..., .list: named list of key-value pairs of session options. The keys must be characters, and values must be simple data types (such as numeric vectors, characters)
path: root path to store the sessions; default is the "tensor_temp_path" in raveio_getopt
order: whether to order the session by date created; choices are 'none' (default), 'ascend', 'descend'
session, x: session identification string, or session object; use list_session to list all existing sessions
new: whether to create a new session instead of using the most recent one, default is false
page_title: session web page title and logo text; can have length of either one (page title and logo text are the same); or length of two, with page title be the first element and logo text be the second.
sidebar_open: whether to open the side-bar by default; default TRUE when more than one module is to be displayed
jupyter: logical, whether to launch 'jupyter' instances when starting 'RAVE' sessions, or to stop the 'jupyter' instances when shutting down. It requires additional setups to enable 'jupyter' lab; see 'Installation Guide Step 3' in the 'RAVE' wiki page.
jupyter_port: port used by 'jupyter' lab, can be set by 'jupyter_port' option in raveio_setopt
as_job: whether to launch the application as 'RStudio' job, default is true if 'RStudio' is detected; when running without 'RStudio', this option is always false
launch_browser: whether to launch browser, default is true
single_session: whether to enable single-session mode. Under this mode, closing the main frame will terminate 'RAVE' run-time session, otherwise the 'RAVE' instance will still open in the background
returnValue: passed to stopApp
max_lines: maximum number of log entries to return; default is 200

Value

new_session: returns a session object with character 'session_id' and a function 'launch_session' to launch the application from this session
use_session: returns a session object, the same as new_session under the condition that corresponding session exists, or raise an error if the session is missing
list_session: returns a list of all existing session objects under the session root
remove_session: returns a logical whether the corresponding session has been found and removed

Examples


if(interactive()){

  sess <- new_session()
  sess$launch_session()

  all_sessions <- list_session()
  print(all_sessions)

  # Use existing session
  session_id <- all_sessions[[1]]$session_id
  sess <- use_session(session_id)
  sess$launch_session()

  # Remove session
  remove_session(session_id)
  list_session()
}