3f1b901db8
Because of b58bd97 ("MINOR: hlua_fcn/mailers: handle timeout mail from
mailers section"), latest examples/lua/mailers.lua file wouldn't work
if loaded with haproxy < 2.8.2 (which is not yet released), unless it
is manually recompiled from the latest code sources.
But this can be an issue given that direct URL may be referenced in
guides/tutorials as download link for the the script, independently
from the related haproxy source code revision.
ie: http://git.haproxy.org/?p=haproxy-2.8.git;a=blob_plain;f=examples/lua/mailers.lua;hb=HEAD
Thus, in order to make examples/lua/mailers.lua work with previous 2.8
versions, we ensure that the script stays compatible with pre-b58bd97
code by adding extra checks in the script.
This must be backported in 2.8 with b58bd97
These files are example lua scripts that can be customized
if necessary.
They can be loaded with the 'lua-load' keyword like this:
lua-load /path/to/lua_script.lua