Last active
May 31, 2021 11:18
-
-
Save antonlukin/69a19b2b0b9404e432b1edd9fddd14ff to your computer and use it in GitHub Desktop.
Parse facebook share counter using nginx with lua extension
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
location /facebook { | |
set $token "href=${arg_id}&layout=button_count&locale=en_US"; | |
resolver 1.1.1.1; | |
proxy_pass https://www.facebook.com/plugins/like.php?$token; | |
proxy_ignore_headers Expires; | |
proxy_ignore_headers Cache-Control; | |
proxy_hide_header Content-Type; | |
proxy_hide_header Content-Security-Policy; | |
proxy_hide_header X-content-Type-Options; | |
proxy_set_header Accept-Encoding ""; | |
proxy_set_header X-Real-IP $remote_addr; | |
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; | |
lua_need_request_body on; | |
lua_use_default_type off; | |
header_filter_by_lua_block { | |
ngx.header.content_length = nil | |
} | |
add_header Content-Type "application/json"; | |
body_filter_by_lua_block { | |
ngx.ctx.buffered = (ngx.ctx.buffered or "") .. ngx.arg[1] | |
ngx.arg[1] = nil | |
if ngx.arg[2] then | |
local count = ngx.re.match(ngx.ctx.buffered, '>Like</span><span.+?>([^<]+)<', 's') | |
if count then | |
ngx.arg[1] = 'knifeFacebookCount({"engagement":{"custom":' .. count[1] .. '}})' | |
else | |
ngx.arg[1] = 'knifeFacebookCount({"error":"Facebook parse error"})' | |
end | |
end | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Use
sudo apt install nginx-extras
to install nginx-lua module.To receive counter follow link http://example.com/facebook-share/?href=https%3A%2F%2Fknife.media%2Fsmells-in-culture%2F