CDB-3256 adds headers based on affected tables when creating a layergroup via HTTP GET

2014-06-24 12:16:30 +02:00
parent 86c6f3eeac
commit 5e73b12cf5
1 changed files with 11 additions and 0 deletions
@@ -438,6 +438,17 @@ module.exports = function(){
            var cacheChannel = me.buildCacheChannel(dbName,tableNames);
            // store for caching from me.afterLayergroupCreate
            me.channelCache[cacheKey] = cacheChannel;
+            if (req.res && req.method == 'GET') {
+                var res = req.res;
+                if ( req.query && req.query.cache_policy == 'persist' ) {
+                    res.header('Cache-Control', 'public,max-age=31536000'); // 1 year
+                } else {
+                    var ttl = global.environment.varnish.ttl || 86400;
+                    res.header('Cache-Control', 'public,max-age='+ttl+',must-revalidate');
+                }
+                res.header('Last-Modified', (new Date()).toUTCString());
+                res.header('X-Cache-Channel', cacheChannel);
+            }
            // find last updated
            if ( ! tableNames.length ) return 0; // skip for no affected tables
            tabNames = tableNames;