2 # DO NOT EDIT - This file is being maintained by Chef
3 location ~* "^/layer/<%= @layer %>/(\d+)/(\d+)/(\d+)\.(png|jpg|jpeg)$" {
6 rewrite ^/layer/<%= @layer %>/(\d+)/(\d+)/(\d+)\.jpg /mosaicjson/tiles/WebMercatorQuad/$1/$2/$3@1x?url=<%= URI.encode_www_form_component(@source) %>&pixel_selection=first&tile_format=jpeg break;
7 rewrite ^/layer/<%= @layer %>/(\d+)/(\d+)/(\d+)\.jpeg /mosaicjson/tiles/WebMercatorQuad/$1/$2/$3@1x?url=<%= URI.encode_www_form_component(@source) %>&pixel_selection=first&tile_format=jpeg break;
8 rewrite ^/layer/<%= @layer %>/(\d+)/(\d+)/(\d+)\.png /mosaicjson/tiles/WebMercatorQuad/$1/$2/$3@1x?url=<%= URI.encode_www_form_component(@source) %>&pixel_selection=first&tile_format=png break;
9 proxy_pass http://<%= @site %>_tiler_backend;
10 proxy_set_header Host $host;
11 proxy_set_header Referer $http_referer;
12 proxy_set_header X-Forwarded-For $remote_addr;
13 proxy_set_header X-Forwarded-Proto https;
14 proxy_set_header X-Forwarded-SSL on;
15 proxy_http_version 1.1;
16 proxy_set_header Connection "";
17 proxy_set_header Cache-Control "";
18 proxy_set_header Pragma "";
20 proxy_cache_key "<%= @layer %><%= @revision %> $request_method $1 $2 $3";
21 proxy_cache proxy_cache_zone;
22 proxy_cache_valid 200 204 180d;
23 proxy_cache_use_stale error timeout updating http_502 http_503 http_504;
24 proxy_cache_background_update on;
25 proxy_next_upstream error timeout invalid_header http_500 http_503;
26 proxy_next_upstream_timeout 30s;
27 proxy_next_upstream_tries 3;
28 proxy_intercept_errors on;
29 proxy_ignore_headers "Cache-Control";
30 proxy_ignore_headers "Expires";
31 proxy_hide_header "Cache-Control";
32 proxy_hide_header "Expires";
33 proxy_hide_header "Access-Control-Allow-Origin";
35 # Override QUERY_STRING to force mapserver query parameters
36 fastcgi_param QUERY_STRING "map=/srv/imagery/mapserver/layer-<%= @layer %>.map&mode=tile&layers=<%= @layer %>&tilemode=gmap&tile=$2+$3+$1";
37 fastcgi_pass "<%= @site %>_fastcgi";
38 include fastcgi_params;
39 fastcgi_param REQUEST_METHOD "GET";
40 fastcgi_param HTTP_PROXY "";
41 fastcgi_read_timeout 60s;
44 fastcgi_cache "fastcgi_cache_zone";
45 fastcgi_cache_key "<%= @layer %><%= @revision %> $request_method $1 $2 $3";
47 # Free connection to socket for other requests
48 fastcgi_keep_conn off;
50 fastcgi_cache_valid 200 21d;
52 # Serve stale cache on errors or if updating
53 fastcgi_cache_use_stale error timeout updating http_500 http_503;
54 # If in cache as stale, serve stale and update in background
55 fastcgi_cache_background_update on;
56 # Enable revalidation using If-Modified-Since and If-None-Match for stale items
57 fastcgi_cache_revalidate on;
61 fastcgi_catch_stderr "Image handling error";
63 fastcgi_next_upstream error timeout invalid_header http_500 http_503;
64 fastcgi_next_upstream_tries 8;
70 # Add HTTP Cache-Control + Expires Headers
72 add_header Cache-Control "stale-while-revalidate=604800, stale-if-error=604800";
73 add_header x-cache-status $upstream_cache_status;
76 add_header 'Access-Control-Allow-Origin' '*' always;
80 rewrite "^/(\d+)/(\d+)/(\d+)\.(png|jpg|jpeg)$" "/layer/<%= @layer %>/$1/$2/$3.$4" last;
82 <% @url_aliases.each do |url| -%>
83 rewrite "^<%= url %>/(\d+)/(\d+)/(\d+)\.(png|jpg|jpeg)$" "/layer/<%= @layer %>/$1/$2/$3.$4" last;