Merge pull request #19 from pelias/more-friendly-warnings

feat(download): Use friendly warnings when Transit config is empty

lib/prep_data.js

@@ -4,13 +4,19 @@ const path = require('path');
 const request = require('sync-request');
 const utils = require('./utils');
 const stops = require('./stops');
+const logger = require( 'pelias-logger' ).get('transit');
 
 const BUF_LENGTH = 64*1024;
 
 // step 1: get transit configuration from pelias.json ... note potential early process exit
 const transitConfig = utils.getTransitConfig();
 const bkupDir = path.join(transitConfig.datapath, 'backup');
 
+if (!transitConfig.feeds) {
+  logger.warn('transit config has no `feed` entries, Transit importer quitting after taking no action');
+  process.exit(0);
+}
+
 // step 2: make sure (as best as we can) we have a directory to write things into
 mkdir(transitConfig.datapath);
 mkdir(bkupDir);

schema.js

@@ -33,5 +33,5 @@ const arrayObj = Joi.object().keys({
 */
 module.exports = Joi.object().keys({
   datapath: Joi.string(),
-  feeds: Joi.array().min(1).items(arrayObj),
-}).requiredKeys('datapath', 'feeds');
+  feeds: Joi.array().items(arrayObj)
+}).requiredKeys('datapath');