sd_database function

Connect to a 'PostgreSQL' Database with Automatic Cleanup

This function establishes a connection pool to a 'PostgreSQL' database (e.g. Supabase) and sets up automatic cleanup when the 'shiny' session ends.

sd_database(
  host = NULL,
  dbname = NULL,
  port = NULL,
  user = NULL,
  table = NULL,
  password = Sys.getenv("SURVEYDOWN_PASSWORD"),
  gssencmode = "prefer",
  ignore = FALSE,
  min_size = 1,
  max_size = Inf
)

Arguments

• host: Character string. The host address of the PostgreSQL database.

• dbname: Character string. The name of the PostgreSQL database.

• port: Integer. The port number for the PostgreSQL database connection.

• user: Character string. The username for the PostgreSQL database connection.

• table: Character string. The name of the table to interact with in the Supabase database.

• password: Character string. The password for the PostgreSQL database connection. NOTE: While you can provide a hard-coded password here, we do NOT recommend doing so for security purposes. Instead, you should establish a password with surveydown::sd_set_password(), which will create a local .Renviron file that stores your password as a SURVEYDOWN_PASSWORD

  environment variable. The password argument uses this as the default value, so if you set a password properly with surveydown::sd_set_password(), then you can safely ignore using the password argument here.

• gssencmode: Character string. The GSS encryption mode for the database connection. Defaults to "prefer". NOTE: If you have verified all connection details are correct but still cannot access the database, consider setting this to "disable". This can be necessary if you're on a secure connection, such as a VPN.

• ignore: Logical. If TRUE, data will be saved to a local CSV file instead of the database. Defaults to FALSE.

• min_size: Integer. The minimum number of connections in the pool. Defaults to 1.

• max_size: Integer. The maximum number of connections in the pool. Defaults to Inf.

Returns

A list containing the database connection pool (db) and the table name (table), or NULL if in ignore mode or if there's an error.

Examples

if (interactive()) {
  # Assuming SURVEYDOWN_PASSWORD is set in .Renviron
  db <- sd_database(
    host   = "aws-0-us-west-1.pooler.supabase.com",
    dbname = "postgres",
    port   = "6---",
    user   = "postgres.k----------i",
    table  = "your-table-name",
    ignore = FALSE
  )

  # Print the structure of the connection
  str(db)

  # Close the connection pool when done
  if (!is.null(db)) {
    pool::poolClose(db$db)
  }
}