Get affected tables and add it to the layergroup

lib/cartodb/models/mapconfig/adapter/analysis-mapconfig-adapter.js

@@ -115,6 +115,7 @@ AnalysisMapConfigAdapter.prototype.getMapConfig = function(user, requestMapConfi
                     }
                     layer.options.sql = analysisSql;
                     layer.options.columns = getDataviewsColumns(getLayerDataviews(layer, dataviews));
+                    layer.options.affected_tables = getAllAffectedTablesFromSourceNodes(layerNode);
                 } else {
                     missingNodesErrors.push(
                         new Error('Missing analysis node.id="' + layerSourceId +'" for layer='+layerIndex)
@@ -330,4 +331,12 @@ function AnalysisError(message) {
     this.message = message;
 }
 
+function getAllAffectedTablesFromSourceNodes(node) {
+    var affectedTables = [];
+    var affectedTables = node.getAllInputNodes(function (node) {
+        return node.getType() === 'source';
+    }).reduce(function(list, node) { return list.concat(node.getAffectedTables()); },[]);
+    return affectedTables;
+}
+
 require('util').inherits(AnalysisError, Error);

test/acceptance/analysis/analysis-layers.js

@@ -146,6 +146,36 @@ describe('analysis-layers', function() {
         });
     });
 
+    it('should have empty affected tables if it has only "source" node', function(done) {
+        var useCase = useCases[0];
+
+        var testClient = new TestClient(useCase.mapConfig, 1234);
+
+        testClient.getLayergroup(function(err, layergroupResult) {
+            assert.ok(!err, err);
+
+            var affected_tables = layergroupResult.metadata.layers[0].meta.affected_tables;
+            assert.equal(affected_tables.length, 0);
+
+            testClient.drain(done);
+        });
+    });
+
+    it('should have empty affected tables if it has a node other than "source"', function(done) {
+        var useCase = useCases[1];
+
+        var testClient = new TestClient(useCase.mapConfig, 1234);
+
+        testClient.getLayergroup(function(err, layergroupResult) {
+            assert.ok(!err, err);
+
+            var affected_tables = layergroupResult.metadata.layers[0].meta.affected_tables;
+            assert.equal(affected_tables[0], 'public.populated_places_simple_reduced');
+
+            testClient.drain(done);
+        });
+    });
+
     it('should NOT fail for non-authenticated requests when it is just source', function(done) {
         var useCase = useCases[0];