On Fri, 11 Dec 2015 17:05:16 -0800 Hugues Alary <[email protected]> wrote:
> Hi there, > > I'm trying my hands on haproxy 1.6.2 and I'm excited about the LUA > integration. > > I'm however running into an issue and can't figure out why. Please forgive > me if my issue is only due to my complete ignorance about LUA (I literally > just opened the language documentation). > > I'm trying to call the txn:get_headers() function, but when doing so, I get > the following error in my logs: "Lua function 'myFunc': runtime error: > /etc/haproxy/hello_world.lua:2: attempt to call a nil value (method > 'get_headers')." Hi, This is strange: Lua says that you try to "call a nil value" when you try to execute a funciton which doesn't exists. In your case, the fucntion exists. You can dump the full stuct of the "txn" var with the function below: http://ww.arpalert.org/haproxy-scripts.html#print_r Just add "print_r(txn)", and you will be fixed about the content of the object "txn". I read the haproxu luacode to be sure of the existence of these function, and I sew that it was renamed. So, try the function: req_get_headers() The API doc: http://www.arpalert.org/src/haproxy-lua-api/1.7dev/#txn-class Thierry. > function myFunc(txn) > txn:get_headers() > end > > core.register_action("myFunc", { "http-req" }, myFunc); > > Is this a bug, or just me not knowing what I'm doing? > > It's worth noting that calling: txn:done() works. > > Sincerely, > -Hugues
