modules/presence/redis-lua/presence-eyeballs-on.lua

   1 local key_socket = KEYS[1];
   2 local key_troupe_users = KEYS[2];
   3 local key_user_lock = KEYS[3];
   4
   5 local user_id = ARGV[1];
   6
   7 local eyeball_lock = redis.call("HSETNX", key_socket, "eb", 1)
   8
   9 if eyeball_lock == 0 then
  10         return { 0 }
  11 end
  12
  13 redis.call("INCR", key_user_lock);
  14 redis.call("EXPIRE", key_user_lock, 10);
  15
  16 local in_troupe_count = redis.call("ZINCRBY", key_troupe_users, 1, user_id)
  17
  18 return { eyeball_lock, in_troupe_count }