app:
# Cache for internal auth checks
proxy_cache_path /usr/local/var/nginx/cache/auth levels=1:2 keys_zone=auth_cache:10m max_size=128m inactive=10m use_temp_path=off;
# Cache for content
proxy_cache_path /usr/local/var/nginx/cache/resx levels=1:2 keys_zone=content_cache:16m max_size=128m inactive=5m use_temp_path=off;
server {
listen 443 ssl http2;
server_name ........;
include /usr/local/etc/nginx/include-auth-internal.conf;
location /api/v1 {
# Auth magic happens here
auth_request /auth;
auth_request_set $user $upstream_http_X_User_Id;
auth_request_set $customer $upstream_http_X_Customer_Id;
auth_request_set $permissions $upstream_http_X_Permissions;
# The backend app, once Nginx has performed internal auth.
proxy_pass http://127.0.0.1:5000;
proxy_set_header X-User-Id $user;
proxy_set_header X-Customer-Id $customer;
proxy_set_header X-Permissions $permissions;
# Cache content
proxy_cache content_cache;
proxy_cache_key "$request_method-$request_uri";
}
location /api/v1/Logout {
auth_request /auth/logout;
}
}
auth:
# Called before every request to backend
location = /auth {
internal;
proxy_cache auth_cache;
proxy_cache_methods GET HEAD POST;
proxy_cache_key "$cookie_token";
# Valid tokens cache duration is set by backend returning a properly set Cache-Control header
# Invalid tokens are shortly cached to protect backend but not flood Nginx cache
proxy_cache_valid 401 30s;
# Valid tokens are cached for 5 minutes so we can get the backend to re-validate them from time to time
proxy_cache_valid 200 5m;
proxy_pass http://127.0.0.1:1234/auth/_Internal;
proxy_set_header Host ........;
proxy_pass_request_body off;
proxy_set_header Content-Length "";
proxy_set_header Accept application/json;
}
# To invalidate a not expired token, use a specific backend endpoint.
# Then we cache the token invalid/401 response itself.
location = /auth/logout {
internal;
proxy_cache auth_cache;
proxy_cache_key "$cookie_token";
# Proper caching duration (> token expire date) set by backend, which will override below default duration
proxy_cache_valid 401 30m;
# A Logout requests forces a cache refresh in order to store a 401 where there was previously a valid authorization
proxy_cache_bypass 1;
# This backend endpoint always returns 401, with a cache header set to the expire date of the token
proxy_pass http://127.0.0.1:1234/auth/_Internal/Logout;
proxy_set_header Host ........;
proxy_pass_request_body off;
}
