user www-data www-data;
worker_processes  2;

error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;

events {
	# max clients = worker_processes * worker_connections
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    #access_log  /var/log/nginx/access.log;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    tcp_nodelay        on;

    gzip  on;
	gzip_min_length 1100;
	gzip_buffers 4 8k;
	# text/html is added gzip_types by default
	gzip_types text/plain application/x-javascript application/x-shockwave-flash text/css;
	
	#NO CGI SUPPORT IN NGINX fix stat .pl later

	upstream web_backend {
		server 127.0.0.1:8000;
		server 127.0.0.1:8001;
		server 127.0.0.1:8002;
		server 127.0.0.1:8003;
		server 127.0.0.1:8004;
		server 127.0.0.1:8005;
		server 127.0.0.1:8006;
		server 127.0.0.1:8007;
		server 127.0.0.1:8008;
		server 127.0.0.1:8009;
		server 127.0.0.1:8010;
		server 127.0.0.1:8011;
		server 127.0.0.1:8012;
		server 127.0.0.1:8013;
		server 127.0.0.1:8014;
		server 127.0.0.1:8015;
		server 127.0.0.1:8016;
		server 127.0.0.1:8017;
		server 127.0.0.1:8018;
		server 127.0.0.1:8019;
		server 127.0.0.1:8020;
		server 127.0.0.1:8021;
		server 127.0.0.1:8022;
		server 127.0.0.1:8023;
		server 127.0.0.1:8024;
		server 127.0.0.1:8025;
		server 127.0.0.1:8026;
		server 127.0.0.1:8027;
		server 127.0.0.1:8028;
		server 127.0.0.1:8029;
	}

	upstream api_backend {
		server 127.0.0.1:8030;
		server 127.0.0.1:8031;
		server 127.0.0.1:8032;
		server 127.0.0.1:8033;
		server 127.0.0.1:8034;
		server 127.0.0.1:8035;
		server 127.0.0.1:8036;
		server 127.0.0.1:8037;
		server 127.0.0.1:8038;
		server 127.0.0.1:8039;
		server 127.0.0.1:8040;
		server 127.0.0.1:8041;
		server 127.0.0.1:8042;
		server 127.0.0.1:8043;
		server 127.0.0.1:8044;
	}

	upstream bulkapi_backend {
		server 10.0.0.10:8000;
		server 10.0.0.11:8000;
		server 10.0.0.12:8000;
		server 10.0.0.10:8001;
		server 10.0.0.11:8001;
		server 10.0.0.12:8001;
		server 10.0.0.10:8002;
		server 10.0.0.11:8002;
		server 10.0.0.12:8002;
		server 10.0.0.10:8003;
		server 10.0.0.11:8003;
		server 10.0.0.12:8003;
	}
	
	upstream tah_backend {
		server 10.0.0.10:8004;
		server 10.0.0.11:8004;
		server 10.0.0.12:8004;
		server 10.0.0.10:8005;
		server 10.0.0.11:8005;
		server 10.0.0.12:8005;
	}

server {
		listen   80;
		server_name  .openstreetmap.org api.openstreetmap.org;
		root /home/rails/public;
		index index.html;
		access_log  /var/log/nginx/openstreetmap.org.access.log;
	
		include /etc/nginx/fastcgi_params;

		#Redirect Historical Links to correct servers
		location /trac/ {
			rewrite ^/trac/(.*)$ http://trac.openstreetmap.org/$1 permanent;
		}

		location /wiki/ {
			rewrite ^/wiki/(.*)$ http://wiki.openstreetmap.org/$1 permanent;
		}

		location / {
			allow all; 
		}
	
		#Handle api.openstreetmap/ -> api.openstreetmap/api/
		if ($host ~* api\.(.*)) {
			rewrite ^/(0\.[0-9]+)/(.*)$ /api/$1/$2;
		}
	
		location /api/ {
			include /etc/nginx/fastcgi_params;
			if ($http_user_agent ~ "^tilesAtHome") {
				#deny all;
				fastcgi_pass tah_backend;
				break;
			}
		}

		location ~ ^/api/0\.6/(map|relation|trackpoints|amf|amf/read|swf/trackpoints|trace/[0-9]+/data)$ {
			fastcgi_pass bulkapi_backend;
			break;
		}
		
		location ~ ^/api/0\.6/.*/search$ {
			fastcgi_pass bulkapi_backend;
			break;
		}

		location ~ ^/api/0\.6/.*/full$ {
			fastcgi_pass bulkapi_backend;
			break;
		}

		# fastcgi Web / Data Browser / Relations etc
		location ~ ^/api/0\.6/ {
			fastcgi_pass api_backend;
			break;
		}

		#Deny unknown API version
		location ~ ^/api/0\.[0-9]+/ {
			deny all;
		}
			
		#Handle Special Case Expiry
		location ~ ^/(export|openlayers)/ {
			expires 7d;
		}
		location ~ ^/(images|javascripts|stylesheets)/ {
			expires max;
		}
	
		location / {
			fastcgi_index index.html;
			if (!-f $request_filename) {
				fastcgi_pass web_backend;
				break;
			}
		}

		location /crossdomain.xml {
			default_type text/x-cross-domain-policy;
		}

		#error_page  404  /404.html;
        # redirect server error pages to the static page /50x.html
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
			root   /var/www/nginx-default;
		}
	}
}