Re: [SR-Users] pseudovariable values written from app_lua sometimes appear incorrect

Hello,

On 9/26/12 9:47 PM, elactrum@jamailca.com wrote:

Hi,

I am using app_lua to frequently store some data in htable and avp entries, using sr.pv.sets. When I read the values using sr.pv.get immediately after writing them, they seem correct. However, when I read them later from Lua, I have noticed that sometimes the value is incorrect or nil. Am I doing something wrong?

The following code uses rtimer to duplicate the problem on startup, printing the errors to syslog.

Tested on version: kamailio 3.3.1 (i386/linux) 2d0f6f

############### # kamailio.cfg ############### loadmodule "pv.so" loadmodule "xlog.so" loadmodule "htable.so" loadmodule "rtimer.so" loadmodule "app_lua"

modparam("htable", "htable", "status=>size=14;autoexpire=0;")

modparam("rtimer", "timer", "name=ta;interval=10;mode=1") modparam("rtimer", "exec", "timer=ta;route=LUA_TEST")

# the following path may need to change depending on filesystem setup modparam("app_lua", "load", "/etc/kamailio/kamailio.lua")

route { route(LUA_TEST); }

route[LUA_TEST] {

    $var(lua_test_key) = $(pp{s.toupper}) + "::";

lua_runstring("htable_test([[status=>$var(lua_test_key)]])"); lua_runstring("avp_test([[status=>$var(lua_test_key)]])");

}

---

-- kamailio.lua

-- Test of sr.pv operations in Lua

function htable_test (namekey) local pvar_prefix = "$sht("..namekey pvar_test(pvar_prefix) end

function avp_test ( name ) local pvar_prefix = "$avp("..name pvar_test(pvar_prefix) end

function pvar_test ( pvar_prefix )

for value = 10000, 10050 do
    local pvar = pvar_prefix..value..")"
    --sr.log("info", "Lua attempting to set '"..pvar.."' to value 

'"..value.."'") sr.pv.sets(pvar, value) end

for value = 10000, 10050 do
    -- now we check what was stored
    local pvar = pvar_prefix..value..")"
    local checkvar = sr.pv.get(pvar)
    if ( tostring(checkvar) ~= tostring(value) ) then
        sr.err(string.format("CHECK: Lua checking pvar '%s' and 

got value '%s' which is NOT '%s'", tostring(pvar), tostring(checkvar), tostring(value) )) end

end

end -- end of kamailio.lua

can you provide the log messages? Note that avps are destroyed after execution of the rtimer route - avps are attached to message/transaction. Hash table values should stay no matter where are set.

Cheers, Daniel