| Here is my code
nginx.conf
worker_processes 1; error_log logs/error.log;
events { worker_connections 1024; }
http { include /vagrant/sso/conf.d/*.conf; }
sso.conf
lua_package_path "/vagrant/sso/lua.d/?.lua;;";
server { listen 80; default_type 'text/plain';
# Set Database variable set $db_host "127.0.0.1"; set $db_name "lua"; set $db_user "lua_dba"; set $db_pass "myluadatabasepassword";
location / { content_by_lua "ngx.say('Hello,world!')"; }
location /test { content_by_lua_file lua.d/test.lua;
}
}
test.lua
-- Test lua file local user = require "user"
ngx.say(user:get_hash())
— user.lua
local mysql = require "resty.mysql"
local db_host = ngx.var.db_host local db_name = ngx.var.db_name local db_user = ngx.var.db_user local db_pass = ngx.var.db_pass local db, err = mysql:new()
-- Instantiate a db connection if not db then return nil end
db:set_timeout(1000) -- 1 sec
local ok, err, errno, sqlstate = db:connect{ host = db_host, port = 3306, database = db_name, user = db_user, password = db_pass, max_packet_size = 1024 * 1024 }
if not ok then return nil end
local _M = { _VERSION = '0.01' }
function _M.get_hash() return db:query("SELECT SHA2(UUID(), 256) AS hash") end
return _M
I m trying to push the all the function dealing with database into a sub class db.lua in some kid of ORM but i m stuck in first stage it self. I was trying to put the connection routine in db.lua and returning db variable but that also lead to C call boundary error. I them move then in user.lua and again tried to access though test.lua it gave same error.
db.lua local mysql = require "resty.mysql"
local db, err = mysql:new()
if not db then -- ngx.say("failed to instantiate mysql: ", err) return nil end
db:set_timeout(1000) -- 1 sec
local ok, err, errno, sqlstate = db:connect{ host = ngx.var.db_host, port = 3306, database = ngx.var.db_name, user = ngx.var.db_user, password = ngx.var.db_pass, max_packet_size = 1024 * 1024 }
if not ok then -- ngx.say("failed to connect: ", err, ": ", errno, " ", sqlstate) return nil end
return db
Thanks
Hello! On Thu, Sep 3, 2015 at 12:03 AM, Maanas Royy wrote: I have code a Single Sign On module on openresty using drizzle and lua.
https://github.com/maanas/sso
Now i m in process of porting the same to use mysql.resty and more
functionality. First and fore most is to provide multi domain authentication
and redirection and full fledges web application firewall.
I m trying to evolve a minimal framework but i m hitting wall by getting
this error.
Attempt to yield across C-call boundary
Please check out the related section in ngx_lua's official documentation: https://github.com/openresty/lua-nginx-module#lua-coroutine-yieldingresumingOne common mistake is to do operations that may require yielding (like cosockets and ngx.sleep) on the top-level scope of your own Lua module files (and thus the require CFunction in the LuaJIT VM will throw this error). If you still don't have any clue, please try to provide a minimal and standalone example that we can comment on and help you further. Does Statically linking pure Lua Module example is key.
If yes, then do i have to compile every time i make some changes?
Seems like a require() thing mentioned above :) No, static linking should not be a must. Maybe you're just abusing some side effect of it. Regards, -agentzh -- .
| 