Initial commit

app/controllers/carto/api/connectors_controller.rb

@@ -0,0 +1,75 @@
+module Carto
+  module Api
+    class ConnectorsController < ::Api::ApplicationController
+
+      MAX_LISTED_TABLES = 500
+
+      ssl_required :index, :show, :tables, :connect
+
+      before_filter :check_availability
+
+      def index
+        render_jsonp(Carto::Connector.providers(user: current_user))
+      end
+
+      def show
+        provider_id = params[:provider_id]
+        begin
+          information = Carto::Connector.information(provider_id)
+          render_jsonp(information)
+        rescue Carto::Connector::InvalidParametersError
+          render_jsonp({ errors: "Provider #{provider_id} unknown" }, 422)
+        end
+      end
+
+      def connect
+        provider_id = params[:provider_id]
+        parameters = build_connection_parameters(provider_id, params)
+        begin
+          connector = Carto::Connector.new(parameters, user: current_user, logger: nil)
+          render_jsonp({"connected": connector.check_connection})
+        rescue Carto::Connector::InvalidParametersError => e
+          render_jsonp({ errors: e.message }, 422)
+        rescue
+          render_jsonp({ errors: "Error connecting to provider #{provider_id}, check connection parameters" }, 400)
+        end
+      end
+
+      def tables
+        provider_id = params[:provider_id]
+        parameters = build_connection_parameters(provider_id, params)
+        if Carto::Connector.list_tables?(provider_id)
+          begin
+            connector = Carto::Connector.new(parameters, user: current_user, logger: nil)
+            render_jsonp(connector.list_tables(MAX_LISTED_TABLES))
+          rescue Carto::Connector::InvalidParametersError => e
+            render_jsonp({ errors: e.message }, 422)
+          rescue
+            render_jsonp({ errors: "Error connecting to provider #{provider_id}, check connection parameters" }, 400)
+          end
+        else
+          render_jsonp({ errors: "Provider #{provider_id} doesn't support list tables" }, 422)
+        end
+      end
+
+      private
+
+      def build_connection_parameters(provider_id, request_params)
+        parameters = {}
+        parameters[:provider] = request_params[:provider_id]
+        parameters[:connection] = {}
+        provider_information = Carto::Connector.information(provider_id)
+        provider_information[:parameters]["connection"].each do |key, _value|
+          if request_params[key.to_sym].present?
+            parameters[:connection][key.to_sym] = request_params[key.to_sym]
+          end
+        end
+        parameters
+      end
+
+      def check_availability
+        head 404 unless Connector.available?(current_user)
+      end
+    end
+  end
+end