tilecache: generate nginx QoS maps

[chef.git] / cookbooks / tilecache / templates / default / nginx_tile_ssl.conf.erb

diff --git a/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb b/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb
index 0ec51a10ef078827c6a1292be3a7b8d6d6e59c00..60d7d451fc5aecd4044ed88843622ff6d3944772 100644 (file)
--- a/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb
+++ b/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb
@@ -1,3 +1,5 @@
+# DO NOT EDIT - This file is being maintained by Chef
+
 upstream tile_cache_backend {
     server 127.0.0.1;
     <% @caches.each do |cache| -%>
@@ -12,8 +14,38 @@ upstream tile_cache_backend {
     keepalive 32;
 }
 
+# Rates table based on current cookie value
+map $cookie_qos_token $limit_rate_qos {
+  include /etc/nginx/conf.d/tile_qos_rates.map;
+}
+
+# Set-Cookie table based on current cookie value
+map $cookie_qos_token $cookie_qos_token_set {
+  include /etc/nginx/conf.d/tile_qos_cookies.map;
+}
+
+map $http_user_agent $approved_scraper {
+  default '';                       # Not approved
+  '~^JOSM\/' 'JOSM';
+  '~^Mozilla\/5\.0\ QGIS\/' 'QGIS';
+}
+
+# Limit Cache-Control header to only approved User-Agents
+map $http_user_agent $limit_http_cache_control {
+  default '';                              # Unset Header
+  '~^Mozilla\/5\.0\ QGIS\/' '';            # Unset Header
+  '~^Mozilla\/5\.0\ ' $http_cache_control; # Pass Header
+}
+
+# Limit Pragma header to only approved User-Agents
+map $http_user_agent $limit_http_pragma {
+  default '';                       # Unset Header
+  '~^Mozilla\/5\.0\ QGIS\/' '';     # Unset Header
+  '~^Mozilla\/5\.0\ ' $http_pragma; # Pass Header
+}
+
 server {
-    listen       443 ssl http2 default_server;
+    listen       443 ssl fastopen=2048 http2 default_server;
     server_name  localhost;
 
     proxy_buffers 8 64k;
@@ -29,14 +61,41 @@ server {
     ssl_stapling on;
     ssl_dhparam /etc/ssl/certs/dhparam.pem;
     resolver <%= @resolvers.join(" ") %>;
+    resolver_timeout 5s;
 
     location / {
       proxy_pass http://tile_cache_backend;
       proxy_set_header X-Forwarded-For $remote_addr;
       proxy_http_version 1.1;
-      proxy_set_header Connection "";
+      proxy_set_header Connection '';
+
+      proxy_connect_timeout 5s;
+
+      # Do not pass cookies to backends.
+      proxy_set_header Cookie '';
+      # Do not pass Accept-Encoding to backends.
+      proxy_set_header Accept-Encoding '';
+
+      # Do not allow setting cookies from backends due to caching.
+      proxy_ignore_headers Set-Cookie;
+      proxy_hide_header Set-Cookie;
+
+      # Set a QoS cookie if none presented (uses nginx Map)
+      add_header Set-Cookie $cookie_qos_token_set;
+
+      # QoS Traffic Rate see $limit_rate on http://nginx.org/en/docs/http/ngx_http_core_module.html
+      set $limit_rate $limit_rate_qos;
+
+      # Allow Higher Traffic Rate from Approved User-Agents which do not support cookies (uses nginx Map)
+      if ($approved_scraper) {
+        set $limit_rate 32768;
+      }
+
+      # Strip any ?query parameters from urls
+      set $args '';
 
-      # Slow traffic slightly
-      limit_rate 24576;
+      # Allow cache purging headers only from select User-Agents (uses nginx Map)
+      proxy_set_header Cache-Control $limit_http_cache_control;
+      proxy_set_header Pragma $limit_http_pragma;
     }
 }