140090250 add debug logs for quota

Add new function 'debug' and pass it with key 'debug' to volos, this will override the existing 'debug' function in volos.
Add debug and trace function to logger object in test file.
Since microgateway needs min node version 8 removing 6.14 from travis tests

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-- '6.14'
 - '8'
 - '10'
 - '12'

package.json

@@ -27,8 +27,8 @@
     "toobusy-js": "^0.5.1",
     "volos-analytics-apigee": "^0.4.0",
     "volos-cache-memory": "^0.10.0",
-    "volos-quota-apigee": "^0.13.3",
-    "volos-quota-common": "^0.11.7",
+    "volos-quota-apigee": "^0.13.4",
+    "volos-quota-common": "^0.11.8",
     "volos-quota-memory": "^0.11.0",
     "volos-spikearrest-memory": "^0.10.0",
     "xml2js": "^0.4.17"

quota/index.js

@@ -6,12 +6,21 @@
 
 var async = require('async');
 var Quota = require('volos-quota-apigee');
-var debug = require('debug')('gateway:quota');
+var debugTerminal = require('debug')('gateway:quota');
 var url = require('url');
+const util = require('util');
 
 
-module.exports.init = function(config /*, logger, stats */) {
+module.exports.init = function(config, logger /*, stats */) {
 
+    const debug = (...data) => {
+        const formatedData = util.format(...data);
+        logger.debug('quota : '+formatedData);
+        debugTerminal(formatedData);
+    }
+
+    debug('quota plugin init called with config: %j', config)
+
     const { product_to_proxy, proxies } = config;
     const prodsObj = {};
     var quotas = {}; // productName -> connectMiddleware
@@ -33,7 +42,7 @@ module.exports.init = function(config /*, logger, stats */) {
         var product = config[productName];
         if (!product.uri && !product.key && !product.secret && !product.allow && !product.interval || product.interval === "null") {
             // skip non-quota config
-            debug('Quota not configured on the API product, skipping. This message is safe to ignore');
+            debug('Quota not configured on the API product: %s, skipping. This message is safe to ignore',productName);
             return;
         }
 
@@ -64,6 +73,7 @@ module.exports.init = function(config /*, logger, stats */) {
         prodsObj[productName] = prodObj;
 
         config[productName].request = config.request;
+        config[productName]['debug'] = debug;
         var quota = Quota.create(config[productName]);
         quotas[productName] = quota.connectMiddleware().apply(options);
         //
@@ -77,7 +87,7 @@ module.exports.init = function(config /*, logger, stats */) {
             return next();
         }
 
-        debug('quota checking products', req.token.api_product_list);
+        debug('New request, quota checking products', req.token.api_product_list);
 
         req.originalUrl = req.originalUrl || req.url; // emulate connect
 

test/microgateway-core.js

@@ -2,6 +2,8 @@
 /* simulating the objects of microgateway-core to avoid run time errors in travis. */
 module.exports = {
     logger: {
+        debug: function (obj, msg) { },
+        trace: function (obj, msg) { },
         info: function (obj, msg) { },
         warn: function (obj, msg) { },
         error: function (obj, msg) {},