box.session.euid()

Returns

the effective user ID of the current user.

The system uses the effective user ID to determine the process's permissions at any given moment. This is the same as /reference/reference_lua/box_session/uid, except two cases:

• box.session.euid() is called within a function invoked by box.session.su(). In this case:

  • box.session.euid() returns the ID of the changed user (the user who is specified by the user-name parameter of the box.session.su() function).

  • box.session.uid() returns the ID of the original user (the user who calls the box.session.su() function).

• box.session.euid() is called within a function specified with box.schema.func.create(function-name, {setuid= true}) and the binary protocol is in use. In this case:

  • box.session.euid() returns the ID of the user who created function-name.
  • box.session.uid() returns the ID of the user who calls function-name.

Return type

number

Example:

 
tarantool> box.session.su('admin')---...tarantool> box.session.uid(), box.session.euid()---- 1- 1...tarantool> function f() return {box.session.uid(),box.session.euid()} end---...tarantool> box.session.su('guest', f)---- - 1  - 0...