move request to utils module

lib/services.js

@@ -1,6 +1,6 @@
 var Web3 = require('web3');
 var async = require('async');
-var request = require('request');
+var utils = require('./utils.js');
 
 var ServicesMonitor = function(options) {
   this.logger = options.logger;
@@ -57,11 +57,11 @@ ServicesMonitor.prototype.check = function() {
     function checkIPFS(result, callback) {
       self.logger.trace('checkIPFS');
 
-      request('http://localhost:5001', function(error, response, body) {
-        if (error) {
-          result.push('IPFS'.red);
-        } else {
+      utils.checkIsAvailable('http://localhost:5001', function(available) {
+        if (available) {
           result.push('IPFS'.green);
+        } else {
+          result.push('IPFS'.red);
         }
         callback(null, result);
       });

lib/utils.js

@@ -1,6 +1,7 @@
 var path = require('path');
 var grunt = require('grunt');
 var merge = require('merge');
+var request = require('request');
 
 function joinPath() {
   return path.join.apply(path.join, arguments);
@@ -18,10 +19,17 @@ function recursiveMerge(target, source) {
   return merge.recursive(target, source);
 }
 
+function checkIsAvailable(url, callback) {
+  request(url, function(error, response, body) {
+    callback(!error);
+  });
+}
+
 module.exports = {
   joinPath: joinPath,
   filesMatchingPattern: filesMatchingPattern,
   fileMatchesPattern: fileMatchesPattern,
-  recursiveMerge: recursiveMerge
+  recursiveMerge: recursiveMerge,
+  checkIsAvailable: checkIsAvailable
 };