tilecache: use conditional validation upstream

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

diff --git a/cookbooks/tilecache/templates/default/nginx_tile.conf.erb b/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
index 47d3bd372380c73d0e52ca289d9e2ce8ddaaa2ba..6895ea54cccf57528290f283036f7ffd3b06facb 100644 (file)
--- a/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
+++ b/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
@@ -1,18 +1,15 @@
 # DO NOT EDIT - This file is being maintained by Chef
 
 upstream tile_cache_backend {
-  server 127.0.0.1;
-  server 127.0.0.2;
-  server 127.0.0.3;
+  server 127.0.0.1:8080;
+  server 127.0.0.2:8080;
 
   # Add the other caches to relieve pressure if local squid failing
   # Balancer: round-robin
 <% @caches.each do |cache| -%>
 <% if cache[:hostname] != node[:hostname] -%>
-<% if node[:tilecache][:tile_siblings].include? cache[:fqdn] -%>
 <% cache.ipaddresses(:family => :inet, :role => :external).sort.each do |address| -%>
-  server <%= address %> backup; # Server <%= cache[:hostname] %>
-<% end -%>
+  server <%= address %>:80 backup; # Server <%= cache[:hostname] %>
 <% end -%>
 <% end -%>
 <% end -%>
@@ -73,18 +70,23 @@ map $http_referer $denied_referer {
   'http://osm.org'                 1; # Faked
 }
 
+map $http_referer $osm_referer {
+  default                                 '';    # False
+  '~^https:\/\/www\.openstreetmap\.org\/' 'osm'; # True
+}
+
 # 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
+map $osm_referer$http_user_agent $limit_http_cache_control {
+  default '';                                # Unset Header
+  '~^osmMozilla\/5\.0\ QGIS\/' '';            # Unset Header
+  '~^osmMozilla\/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
+map $osm_referer$http_user_agent $limit_http_pragma {
+  default '';                          # Unset Header
+  '~^osmMozilla\/5\.0\ QGIS\/' '';     # Unset Header
+  '~^osmMozilla\/5\.0\ ' $http_pragma; # Pass Header
 }
 
 server {
@@ -92,6 +94,7 @@ server {
     server_name  localhost;
 
     proxy_buffers 8 64k;
+    proxy_busy_buffers_size 64k;
 
     ssl_certificate      /etc/ssl/certs/tile.openstreetmap.org.pem;
     ssl_certificate_key  /etc/ssl/private/tile.openstreetmap.org.key;
@@ -174,6 +177,11 @@ server {
     # Dedicated zoom handler for caching
     location /<%= i %>/ {
 <% end %>
+      # Only allow GET / HEAD / OPTIONS (CORS) requests
+      limit_except GET HEAD OPTIONS {
+        deny all;
+      }
+
       proxy_pass http://tile_cache_backend;
       proxy_set_header X-Forwarded-For $remote_addr;
       proxy_http_version 1.1;
@@ -217,9 +225,11 @@ server {
       proxy_cache_use_stale error timeout updating http_500 http_503 http_504;
       # If in cache as stale, serve stale and update in background
       proxy_cache_background_update on;
+      # Enable revalidation using If-Modified-Since and If-None-Match for stale items
+      proxy_cache_revalidate on;
       proxy_cache_min_uses 8;
 
-      add_header X-Nginx-Cache-Status $upstream_cache_status;
+      add_header x-cache-status $upstream_cache_status;
 <% end -%>
 
       # Set a QoS cookie if none presented (uses nginx Map)