Created
August 5, 2019 14:37
-
-
Save ThijsFeryn/b5ac364284477289c3c5888dd8434610 to your computer and use it in GitHub Desktop.
edgestash through link headers & a synthesized JSON backend
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
vcl 4.1; | |
import cookieplus; | |
import edgestash; | |
import std; | |
import ykey; | |
import redis; | |
import synthbackend; | |
backend default { | |
.host = "origin"; | |
.port = "80"; | |
} | |
sub vcl_init { | |
new db = redis.db( | |
location="redis:6379", | |
type=master, | |
connection_timeout=500, | |
shared_connections=false, | |
max_connections=1); | |
} | |
sub vcl_recv { | |
set req.http.X-Login = "false"; | |
set req.http.Surrogate-Capability="key=ESI/1.0, edgestash=EDGESTASH/2.1"; | |
set req.http.x-session = cookieplus.get("PHPSESSID","guest"); | |
if(req.http.x-session != "guest") { | |
db.command("EXISTS"); | |
db.push("sf_s"+cookieplus.get("PHPSESSID")); | |
db.execute(); | |
if(db.get_integer_reply() == 1) { | |
set req.http.X-Login = "true"; | |
} | |
} | |
if(req.method == "POST") { | |
ykey.purge(req.http.x-session); | |
} | |
if ((req.method != "GET" && req.method != "HEAD") || req.http.Authorization) { | |
return (pass); | |
} | |
return(hash); | |
} | |
sub vcl_hash { | |
if(req.http.host ~ "^edgestash\.") { | |
hash_data(req.http.x-session); | |
} | |
} | |
sub vcl_backend_fetch | |
{ | |
if(bereq.url == "/api/session") { | |
db.command("EVAL"); | |
db.push({" | |
local session = redis.call('GET', KEYS[1]) | |
if session == nil then | |
return '{"username":"","liked":[],"somethingCool": false}' | |
end | |
local result = string.gsub(session, '[%c]', '') | |
local username = string.gsub(result,'.+Userusername\";s:[0-9]+:\"([^\"]+)\";.+','%1') | |
return '{"username":"'.. username ..'","liked":[],"somethingCool": true}' | |
"}); | |
db.push(1); | |
db.push("sf_s"+cookieplus.get("PHPSESSID")); | |
db.execute(); | |
set bereq.backend = synthbackend.from_string(db.get_string_reply()); | |
} else { | |
set bereq.backend = default; | |
} | |
if (bereq.http.Host ~ "^edgestash\.") { | |
set bereq.http.Host = regsub(bereq.http.Host, "^edgestash\.", ""); | |
} | |
} | |
sub vcl_backend_response { | |
std.collect(beresp.http.Link); | |
set beresp.http.x-edgestash-json-urls = regsuball(beresp.http.Link,"<([^>]+)>; rel=edgestash","\1"); | |
if(beresp.http.Surrogate-Control~"ESI/1.0") { | |
set beresp.do_esi=true; | |
} | |
if(beresp.http.Surrogate-Control~"EDGESTASH/2\.[0-9]+") { | |
edgestash.parse_response(); | |
} | |
if(beresp.http.Surrogate-Control) { | |
unset beresp.http.Surrogate-Control; | |
} | |
} | |
sub vcl_deliver { | |
if(edgestash.is_edgestash()) { | |
edgestash.add_json_url_csv(resp.http.x-edgestash-json-urls, json_host="edgestash." + req.http.host); | |
edgestash.execute(); | |
} | |
unset resp.http.Link; | |
unset resp.http.x-edgestash-json-urls; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment