1 -- generate a ready-to-use list of the configures LDAP servers

2 -- --------------------------------------------------------------------------

3 -- result is in order of preference, including a round robin style random

4 -- selection of the preference of hosts with the same preference

5 --

6 -- returns:

7 -- hostlist: flattened list of LDAP servers in order of preference

8

9 function ldap.get_hosts()

10

11 math.randomseed(os.time())

12

13 local hostlist = {}

14

15 -- iterate through all entries on base level

16 for i, host in ipairs (config.ldap.hosts) do

17

18 -- a single host entry

19 if host.uri then

20 hostlist[#hostlist+1] = host

21

22 -- or a list of host entries

23 else

24 local subhostlist = {}

25

26 -- sort list of host entries by random

27 for j, subhost in ipairs(host) do

28 subhost.priority = math.random()

29 subhostlist[#subhostlist+1] = subhost

30 end

31 table.sort(subhostlist, function (a,b)

32 return a.priority < b.priority

33 end)

34

35 -- and add them to the main list

36 for i, subhost in ipairs(subhostlist) do

37 hostlist[#hostlist+1] = subhost

38 end

39

40 end

41

42 end

43

44 return hostlist

45

46 end