refactor: use export global variables instead of express

src/app.ts

@@ -19,13 +19,12 @@ import {
   SCSyntaxErrorResponse,
   SCUnsupportedMediaTypeErrorResponse,
 } from '@openstapps/core';
-import {Validator} from '@openstapps/core-tools/lib/validate';
 import * as config from 'config';
 import * as cors from 'cors';
 import * as express from 'express';
 import * as morgan from 'morgan';
 import {join} from 'path';
-import {configFile, logger, mailer} from './common';
+import {configFile, isTestEnvironment, logger, mailer, validator} from './common';
 import {MailQueue} from './notification/MailQueue';
 import {bulkAddRouter} from './routes/BulkAddRoute';
 import {bulkDoneRouter} from './routes/BulkDoneRoute';
@@ -39,7 +38,6 @@ import {DatabaseConstructor} from './storage/Database';
 import {Elasticsearch} from './storage/elasticsearch/Elasticsearch';
 
 export const app = express();
-const isTestEnvironment = process.env.NODE_ENV !== 'production';
 
 async function configureApp() {
   // request loggers have to be the first middleware to be set in express
@@ -107,11 +105,10 @@ async function configureApp() {
   };
 
   // validate config file
-  const scValidator = new Validator();
-  await scValidator.addSchemas(join('node_modules', '@openstapps', 'core', 'lib', 'schema'));
+  await validator.addSchemas(join('node_modules', '@openstapps', 'core', 'lib', 'schema'));
 
   // validate the config file
-  const configValidation = scValidator.validate(configFile, 'SCConfigFile');
+  const configValidation = validator.validate(configFile, 'SCConfigFile');
 
   // validation failed
   if (configValidation.errors.length > 0) {
@@ -126,17 +123,11 @@ async function configureApp() {
     throw new Error('You have to configure a database');
   }
 
-  if (typeof mailer !== 'undefined') {
-    // set a mailQueue to use the backend mailer
-    if (config.has('internal.monitoring')) {
-      app.set('mailQueue', new MailQueue(mailer));
-    }
-  }
-
   const database =
     new databases[config.get<string>('internal.database.name')](
       configFile,
-      app.get('mailQueue'),
+      // mailQueue
+      typeof mailer !== 'undefined' && config.has('internal.monitoring') ? new MailQueue(mailer) : undefined,
     );
 
   if (typeof database === 'undefined') {
@@ -145,12 +136,9 @@ async function configureApp() {
 
   logger.ok('Validated config file sucessfully');
 
-  // make the validator available on the app
-  app.set('validator', scValidator);
-
   // treats /foo and /foo/ as two different routes
   // see http://expressjs.com/en/api.html#app.set
-  app.set('strict routing', true);
+  app.enable('strict routing');
 
   // make the bulk storage available to all http middlewares/routes
   app.set(
@@ -158,6 +146,8 @@ async function configureApp() {
     new BulkStorage(database),
   );
 
+  app.set('env', process.env.NODE_ENV);
+
   const corsOptions = {
     allowedHeaders: [
       'DNT',
@@ -182,8 +172,6 @@ async function configureApp() {
   // allow cors preflight requests on every route
   app.options('*', cors(corsOptions));
 
-  app.set('isTestEnvironment', isTestEnvironment);
-
   // load routes before plugins
   // they now can be used or overwritten by any plugin
   app.use(

src/cli.ts

@@ -21,6 +21,7 @@ import {logger} from './common';
  * Get port from environment and store in Express.
  */
 const port = normalizePort(process.env.PORT || '3000');
+// TODO: Can we remove that? It doesn't look like it is read at all.
 app.set('port', port);
 
 /**

src/common.ts

@@ -14,6 +14,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 import {SCConfigFile} from '@openstapps/core';
+import {Validator} from '@openstapps/core-tools/lib/validate';
 import {Logger} from '@openstapps/logger';
 import * as config from 'config';
 import {BackendTransport} from './notification/BackendTransport';
@@ -23,3 +24,7 @@ export const mailer = BackendTransport.getTransportInstance();
 export const logger = new Logger(mailer);
 
 export const configFile: SCConfigFile = config.util.toObject();
+
+export const validator = new Validator();
+
+export const isTestEnvironment = process.env.NODE_ENV !== 'production';

src/routes/BulkAddRoute.ts

@@ -14,7 +14,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 import {SCBulkAddRequest, SCBulkAddResponse, SCBulkAddRoute, SCNotFoundErrorResponse} from '@openstapps/core';
-import {logger} from '../common';
+import {isTestEnvironment, logger} from '../common';
 import {BulkStorage} from '../storage/BulkStorage';
 import {createRoute} from './Route';
 
@@ -36,7 +36,7 @@ export const bulkAddRouter = createRoute<SCBulkAddResponse>(
 
     if (typeof bulk === 'undefined') {
       logger.warn(`Bulk with ${params.UID} not found.`);
-      throw new SCNotFoundErrorResponse(app.get('isTestEnvironment'));
+      throw new SCNotFoundErrorResponse(isTestEnvironment);
     }
 
     await bulkMemory.database.post(request, bulk);

src/routes/BulkDoneRoute.ts

@@ -14,7 +14,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 import {SCBulkDoneRequest, SCBulkDoneResponse, SCBulkDoneRoute, SCNotFoundErrorResponse} from '@openstapps/core';
-import {logger} from '../common';
+import {isTestEnvironment, logger} from '../common';
 import {BulkStorage} from '../storage/BulkStorage';
 import {createRoute} from './Route';
 
@@ -36,7 +36,7 @@ export const bulkDoneRouter = createRoute<SCBulkDoneResponse>(
 
     if (typeof bulk === 'undefined') {
       logger.warn(`Bulk with ${params.UID} not found.`);
-      throw new SCNotFoundErrorResponse(app.get('isTestEnvironment'));
+      throw new SCNotFoundErrorResponse(isTestEnvironment);
     }
 
     bulk.state = 'done';

src/routes/MultiSearchRoute.ts

@@ -20,7 +20,7 @@ import {
   SCSearchResponse,
   SCTooManyRequestsErrorResponse,
 } from '@openstapps/core';
-import {configFile} from '../common';
+import {configFile, isTestEnvironment} from '../common';
 import {BulkStorage} from '../storage/BulkStorage';
 import {createRoute} from './Route';
 
@@ -37,7 +37,7 @@ export const multiSearchRouter = createRoute<SCMultiSearchResponse | SCTooManyRe
     const queryNames = Object.keys(request);
 
     if (queryNames.length > configFile.backend.maxMultiSearchRouteQueries) {
-      throw new SCTooManyRequestsErrorResponse(app.get('isTestEnvironment'));
+      throw new SCTooManyRequestsErrorResponse(isTestEnvironment);
     }
 
     // get a map of promises for each query

src/routes/Route.ts

@@ -19,11 +19,10 @@ import {
   SCRoute,
   SCValidationErrorResponse,
 } from '@openstapps/core';
-import {Validator} from '@openstapps/core-tools/lib/validate';
 import {Application, Router} from 'express';
 import PromiseRouter from 'express-promise-router';
 import {ValidationError} from 'jsonschema';
-import {logger} from '../common';
+import {isTestEnvironment, logger, validator} from '../common';
 import {isHttpMethod} from './HTTPTypes';
 
 /**
@@ -71,16 +70,13 @@ export function createRoute<RETURNTYPE>(
     route[verb](async (req, res) => {
 
       try {
-        // get the core validator from the app
-        const validator: Validator = req.app.get('validator');
-
         // validate request
         const requestValidation = validator.validate(req.body, routeClass.requestBodyName);
 
         if (requestValidation.errors.length > 0) {
           const error = new SCValidationErrorResponse(
             requestValidation.errors,
-            req.app.get('isTestEnvironment'),
+            isTestEnvironment,
           );
           res.status(error.statusCode);
           res.json(error);
@@ -97,11 +93,11 @@ export function createRoute<RETURNTYPE>(
         if (responseErrors.length > 0) {
           const validationError = new SCValidationErrorResponse(
             responseErrors,
-            req.app.get('isTestEnvironment'),
+            isTestEnvironment,
           );
           const internalServerError = new SCInternalServerErrorResponse(
             validationError,
-            req.app.get('isTestEnvironment'),
+            isTestEnvironment,
           );
           res.status(internalServerError.statusCode);
           res.json(internalServerError);
@@ -125,7 +121,7 @@ export function createRoute<RETURNTYPE>(
           // the error is not allowed so something went wrong
           const internalServerError = new SCInternalServerErrorResponse(
             error,
-            req.app.get('isTestEnvironment'),
+            isTestEnvironment,
           );
           res.status(internalServerError.statusCode);
           res.json(internalServerError);
@@ -138,8 +134,8 @@ export function createRoute<RETURNTYPE>(
   }
 
   // return a SCMethodNotAllowedErrorResponse on all other HTTP methods
-  route.all((req, res) => {
-    const error = new SCMethodNotAllowedErrorResponse(req.app.get('isTestEnvironment'));
+  route.all((_req, res) => {
+    const error = new SCMethodNotAllowedErrorResponse(isTestEnvironment);
     res.status(error.statusCode);
     res.json(error);
     logger.warn(error);