Log the configs when app starts.

Author: afrisalyp

app.js

@@ -8,6 +8,8 @@
  * @version 1.0
  */
 'use strict';
+const config = require('config');
+const _ = require('lodash');
 const express = require('express');
 const cookieParser = require('cookie-parser');
 const bodyParser = require('body-parser');
@@ -25,6 +27,39 @@ function check() {
   };
 }
 
+// dump the configuration to logger
+const ignoreConfigLog = ['cert', 'key', 'AWS_ACCESS_KEY_ID', 'AWS_SECRET_ACCESS_KEY', 'AUTH0_CLIENT_ID', 'AUTH0_CLIENT_SECRET'];
+/**
+ * Print configs to logger
+ * @param {Object} params the config params
+ * @param {Number} level the level of param object
+ */
+function dumpConfigs(params, level) {
+  Object.keys(params).forEach((key) => {
+    if (_.includes(ignoreConfigLog, key)) {
+      return;
+    }
+    const item = params[key];
+    let str = '';
+    let n = 0;
+    while (n < level) { // eslint-disable-line no-restricted-syntax
+      n++;
+      str += '  ';
+    }
+    if (item && _.isObject(item)) {
+      str += `${key}=`;
+      logger.debug(str);
+      dumpConfigs(item, level + 1);
+    } else {
+      str += `${key}=${item}`;
+      logger.debug(str);
+    }
+  });
+}
+logger.debug('--- List of Configurations ---');
+dumpConfigs(config, 0);
+logger.debug('--- End of List of Configurations ---');
+
 const webhooks = require('./routes/webhooks');
 
 const app = express();

config/default.js

@@ -15,7 +15,7 @@ const fs = require('fs');
 
 module.exports = {
   PORT: process.env.PORT || 3000, // eslint-disable-line no-magic-numbers
-  LOG_LEVEL: process.env.LOG_LEVEL || 'info',
+  LOG_LEVEL: process.env.LOG_LEVEL || 'debug',
   TOPIC: process.env.TOPIC || 'tc-x-events',
   KAFKA_OPTIONS: {
     connectionString: process.env.KAFKA_URL || 'localhost:9092',