92 lines
2.7 KiB
JavaScript
92 lines
2.7 KiB
JavaScript
|
|
var _ = require('underscore')
|
|
, Step = require('step')
|
|
, Windshaft = require('windshaft')
|
|
, Cache = require('./cache_validator');
|
|
|
|
var CartodbWindshaft = function(serverOptions) {
|
|
|
|
// set the cache chanel info to invalidate the cache on the frontend server
|
|
serverOptions.afterTileRender = function(req, res, tile, headers, callback) {
|
|
Cache.generateCacheChannel(req, function(channel){
|
|
res.header('X-Cache-Channel', channel);
|
|
res.header('Last-Modified', new Date().toUTCString());
|
|
res.header('Cache-Control', 'no-cache,max-age=86400,must-revalidate, public');
|
|
callback(null, tile, headers);
|
|
});
|
|
};
|
|
|
|
if(serverOptions.cache_enabled) {
|
|
console.log("cache invalidation enabled, varnish on ", serverOptions.varnish_host, ' ', serverOptions.varnish_port);
|
|
Cache.init(serverOptions.varnish_host, serverOptions.varnish_port);
|
|
serverOptions.afterStateChange = function(req, data, callback) {
|
|
Cache.invalidate_db(req.params.dbname, req.params.table);
|
|
callback(null, data);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
// boot
|
|
var ws = new Windshaft.Server(serverOptions);
|
|
|
|
/**
|
|
* Helper to allow access to the layer to be used in the maps infowindow popup.
|
|
*/
|
|
ws.get(serverOptions.base_url + '/infowindow', function(req, res){
|
|
Step(
|
|
function(){
|
|
serverOptions.getInfowindow(req, this);
|
|
},
|
|
function(err, data){
|
|
if (err){
|
|
res.send(err.message, 500);
|
|
} else {
|
|
res.send({infowindow: data}, 200);
|
|
}
|
|
}
|
|
);
|
|
});
|
|
|
|
|
|
/**
|
|
* Helper to allow access to metadata to be used in embedded maps.
|
|
*/
|
|
ws.get(serverOptions.base_url + '/map_metadata', function(req, res){
|
|
Step(
|
|
function(){
|
|
serverOptions.getMapMetadata(req, this);
|
|
},
|
|
function(err, data){
|
|
if (err){
|
|
res.send(err.message, 500);
|
|
} else {
|
|
res.send({map_metadata: data}, 200);
|
|
}
|
|
}
|
|
);
|
|
});
|
|
|
|
/**
|
|
* Helper API to allow per table tile cache (and sql cache) to be invalidated remotely.
|
|
* TODO: Move?
|
|
*/
|
|
ws.del(serverOptions.base_url + '/flush_cache', function(req, res){
|
|
Step(
|
|
function(){
|
|
serverOptions.flushCache(req, Cache, this);
|
|
},
|
|
function(err, data){
|
|
if (err){
|
|
res.send(500);
|
|
} else {
|
|
res.send({status: 'ok'}, 200);
|
|
}
|
|
}
|
|
);
|
|
});
|
|
return ws;
|
|
}
|
|
|
|
module.exports = CartodbWindshaft;
|