Revert "Drop /map_metadata API entry point"

This reverts commit b37b07a06a1dd3cf05d60f4aa613ab5c48b90700.

This was too light of a decision...

NEWS.md

@@ -2,7 +2,6 @@
 -------------------
 
 * Update cartodb-redis dependency to "~0.2.0"
-* Drop /map_metadata API entry point (#101)
 
 1.5.2 -- 2013-12-05
 -------------------

README.md

@@ -3,15 +3,16 @@ Windshaft-CartoDB
 
 [![Build Status](https://travis-ci.org/CartoDB/Windshaft-cartodb.png)](http://travis-ci.org/CartoDB/Windshaft-cartodb)
 
-This is the CartoDB 2.0+ map tiler. It extends Windshaft with some extra
+This is the CartoDB map tiler. It extends Windshaft with some extra
 functionality and custom filters for authentication
 
-* reads dbname from hostname and cartodb redis for pretty tile urls
+* reads dbname from subdomain and cartodb redis for pretty tile urls
 * configures windshaft to publish ``cartodb_id`` as the interactivity layer
 * gets the default geometry type from the cartodb redis store
+* allows tiles to be styled individually
 * provides a link to varnish high speed cache
 * provides a infowindow endpoint for windshaft
-* provides support for template signed maps
+* provides a ``map_metadata`` endpoint for windshaft
 
 Requirements
 ------------
@@ -25,7 +26,7 @@ Requirements
 
  [for cache control]
  - CartoDB-SQL-API 1.0.0+
- - CartoDB 2.0.0+ 
+ - CartoDB 0.9.5+ (for ``CDB_QueryTables``)
  - Varnish (https://www.varnish-cache.org)
 
 Configure

lib/cartodb/cartodb_windshaft.js

@@ -55,6 +55,26 @@ var CartodbWindshaft = function(serverOptions) {
     });
 
 
+    /**
+     * Helper to allow access to metadata to be used in embedded maps.
+     */
+    ws.get(serverOptions.base_url + '/map_metadata', function(req, res){
+        ws.doCORS(res);
+        Step(
+            function(){
+                serverOptions.getMapMetadata(req, this);
+            },
+            function(err, data){
+                if (err){
+                    ws.sendError(res, {error: err.message}, 500, 'GET MAP_METADATA');
+                    //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?

lib/cartodb/server_options.js

@@ -550,6 +550,25 @@ module.exports = function(){
         );
     };
 
+    /**
+     * Little helper method to get map metadata and return to client
+     * @param req
+     * @param callback
+     */
+    me.getMapMetadata = function(req, callback){
+        var that = this;
+
+        Step(
+            function(){
+                that.req2params(req, this);
+            },
+            function(err, data){
+                if (err) callback(err, null);
+                else cartoData.getMapMetadata(data, callback);
+            }
+        );
+    };
+
     /**
      * Helper to clear out tile cache on request
      * @param req

test/acceptance/server.js

@@ -1196,6 +1196,59 @@ suite('server', function() {
         });
     });
 
+    /////////////////////////////////////////////////////////////////////////////////
+    //
+    // GET METADATA
+    //
+    /////////////////////////////////////////////////////////////////////////////////
+
+    test("does not provide metadata of private table to unauthenticated requests", function(done){
+        assert.response(server, {
+            headers: {host: 'localhost'},
+            url: '/tiles/test_table_private_1/map_metadata',
+            method: 'GET'
+        },{}, function(res) {
+          // FIXME: should be 401 instead
+          assert.equal(res.statusCode, 500, res.statusCode + ': ' + res.body);
+          done();
+        });
+    });
+
+    test("does provide metadata of private table to authenticated requests", function(done){
+        assert.response(server, {
+            headers: {host: 'localhost'},
+            url: '/tiles/test_table_private_1/map_metadata?map_key=1234',
+            method: 'GET'
+        },{}, function(res) {
+          assert.equal(res.statusCode, 200, res.statusCode + ': ' + res.body);
+          done();
+        });
+    });
+
+    test("does provide metadata of public table to unauthenticated requests", function(done){
+        assert.response(server, {
+            headers: {host: 'localhost'},
+            url: '/tiles/gadm4/map_metadata',
+            method: 'GET'
+        },{}, function(res) {
+          assert.equal(res.statusCode, 200, res.statusCode + ': ' + res.body);
+          // TODO: show metadata ?
+          done();
+        });
+    });
+
+    test("does provide metadata of public table to authenticated requests", function(done){
+        assert.response(server, {
+            headers: {host: 'localhost'},
+            url: '/tiles/gadm4/map_metadata?map_key=1234',
+            method: 'GET'
+        },{}, function(res) {
+          assert.equal(res.statusCode, 200, res.statusCode + ': ' + res.body);
+          // TODO: show metadata ?
+          done();
+        });
+    });
+
     /////////////////////////////////////////////////////////////////////////////////
     //
     // DELETE CACHE