send email from a separate service

Author: isocolsky

emailservice/emailservice.js

@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+
+'use strict';
+
+var _ = require('lodash');
+var log = require('npmlog');
+log.debug = log.verbose;
+
+var config = require('../config');
+var EmailService = require('../lib/emailservice');
+
+var emailService = new EmailService();
+emailService.start(config, function(err) {
+  if (err) throw err;
+
+  console.log('Email service started');
+});

lib/blockchainmonitor.js

@@ -10,7 +10,6 @@ var BlockchainExplorer = require('./blockchainexplorer');
 var Storage = require('./storage');
 var MessageBroker = require('./messagebroker');
 var Lock = require('./lock');
-var EmailService = require('./emailservice');
 
 var Notification = require('./model/notification');
 
@@ -20,8 +19,8 @@ BlockchainMonitor.prototype.start = function(opts, cb) {
   opts = opts || {};
   $.checkArgument(opts.blockchainExplorerOpts);
   $.checkArgument(opts.storageOpts);
+  $.checkArgument(opts.messageBrokerOpts);
   $.checkArgument(opts.lockOpts);
-  $.checkArgument(opts.emailOpts);
 
   var self = this;
 
@@ -49,16 +48,8 @@ BlockchainMonitor.prototype.start = function(opts, cb) {
   ], function(err) {
     if (err) {
       log.error(err);
-      return cb(err);
     }
-
-    self.emailService = new EmailService({
-      lock: self.lock,
-      storage: self.storage,
-      mailer: opts.mailer,
-      emailOpts: opts.emailOpts,
-    });
-    return cb();
+    return cb(err);
   });
 };
 
@@ -136,11 +127,7 @@ BlockchainMonitor.prototype._createNotification = function(walletId, txid, addre
   });
   self.storage.storeNotification(walletId, notification, function() {
     self.messageBroker.send(notification)
-    if (self.emailService) {
-      self.emailService.sendEmail(notification, cb);
-    } else {
-      return cb();
-    }
+    return cb();
   });
 };
 

lib/emailservice.js

@@ -8,6 +8,10 @@ log.debug = log.verbose;
 var fs = require('fs');
 var nodemailer = require('nodemailer');
 
+var Storage = require('./storage');
+var MessageBroker = require('./messagebroker');
+var Lock = require('./lock');
+
 var Model = require('./model');
 
 var EMAIL_TYPES = {
@@ -38,21 +42,47 @@ var EMAIL_TYPES = {
 };
 
 
-function EmailService(opts) {
-  $.checkArgument(opts);
+function EmailService() {};
 
-  opts.emailOpts = opts.emailOpts || {};
+EmailService.prototype.start = function(opts, cb) {
+  opts = opts || {};
+  $.checkArgument(opts.storageOpts);
+  $.checkArgument(opts.messageBrokerOpts);
+  $.checkArgument(opts.lockOpts);
+  $.checkArgument(opts.emailOpts);
 
-  this.storage = opts.storage;
-  this.lock = opts.lock;
-  this.mailer = opts.mailer || nodemailer.createTransport(opts.emailOpts);
-  this.subjectPrefix = opts.emailOpts.subjectPrefix || '[Wallet service]';
-  this.from = opts.emailOpts.from;
+  var self = this;
 
-  $.checkState(this.mailer);
-  $.checkState(this.from);
+  async.parallel([
+
+    function(done) {
+      self.storage = new Storage();
+      self.storage.connect(opts.storageOpts, done);
+    },
+    function(done) {
+      self.messageBroker = new MessageBroker(opts.messageBrokerOpts);
+      self.messageBroker.onMessage(_.bind(self.sendEmail, self));
+      done();
+    },
+    function(done) {
+      self.lock = new Lock(opts.lockOpts);
+      done();
+    },
+    function(done) {
+      self.mailer = opts.mailer || nodemailer.createTransport(opts.emailOpts);
+      self.subjectPrefix = opts.emailOpts.subjectPrefix || '[Wallet service]';
+      self.from = opts.emailOpts.from;
+      done();
+    },
+  ], function(err) {
+    if (err) {
+      log.error(err);
+    }
+    return cb(err);
+  });
 };
 
+
 // TODO: cache for X minutes
 EmailService.prototype._readTemplate = function(filename, cb) {
   fs.readFile(__dirname + '/templates/' + filename + '.plain', 'utf8', function(err, template) {
@@ -144,6 +174,8 @@ EmailService.prototype._send = function(email, cb) {
 EmailService.prototype.sendEmail = function(notification, cb) {
   var self = this;
 
+  cb = cb || function() {};
+
   var emailType = EMAIL_TYPES[notification.type];
   if (!emailType) return cb();
 

lib/server.js

@@ -19,7 +19,6 @@ var Lock = require('./lock');
 var Storage = require('./storage');
 var MessageBroker = require('./messagebroker');
 var BlockchainExplorer = require('./blockchainexplorer');
-var EmailService = require('./emailservice');
 
 var Model = require('./model');
 var Wallet = Model.Wallet;
@@ -31,7 +30,6 @@ var storage;
 var blockchainExplorer;
 var blockchainExplorerOpts;
 var messageBroker;
-var emailService;
 
 
 /**
@@ -48,7 +46,6 @@ function WalletService() {
   this.blockchainExplorerOpts = blockchainExplorerOpts;
   this.messageBroker = messageBroker;
   this.notifyTicker = 0;
-  this.emailService = emailService;
 };
 
 /**
@@ -80,17 +77,6 @@ WalletService.initialize = function(opts, cb) {
     }
   };
 
-  function initEmailService(cb) {
-    if (!opts.mailer && !opts.emailOpts) return cb();
-    emailService = new EmailService({
-      lock: lock,
-      storage: storage,
-      mailer: opts.mailer,
-      emailOpts: opts.emailOpts,
-    });
-    return cb();
-  };
-
   function initMessageBroker(cb) {
     if (opts.messageBroker) {
       messageBroker = opts.messageBroker;
@@ -108,9 +94,6 @@ WalletService.initialize = function(opts, cb) {
     function(next) {
       initMessageBroker(next);
     },
-    function(next) {
-      initEmailService(next);
-    },
   ], function(err) {
     if (err) {
       log.error('Could not initialize', err);
@@ -356,11 +339,7 @@ WalletService.prototype._notify = function(type, data, opts, cb) {
 
   this.storage.storeNotification(walletId, notification, function() {
     self.messageBroker.send(notification);
-    if (self.emailService) {
-      self.emailService.sendEmail(notification, cb);
-    } else {
-      return cb();
-    }
+    return cb();
   });
 };
 

test/integration/server.js

@@ -3229,51 +3229,4 @@ describe('Wallet service', function() {
       });
     });
   });
-
-  describe('Email notifications', function() {
-    var server, wallet, sendMailStub;
-    beforeEach(function(done) {
-      helpers.createAndJoinWallet(2, 3, function(s, w) {
-        server = s;
-        wallet = w;
-        sendMailStub = sinon.stub();
-        sendMailStub.yields();
-        server.emailService.mailer.sendMail = sendMailStub;
-
-        var i = 0;
-        async.eachSeries(w.copayers, function(copayer, next) {
-          helpers.getAuthServer(copayer.id, function(server) {
-            server.savePreferences({
-              email: 'copayer' + (i++) + '@domain.com',
-            }, next);
-          });
-        }, done);
-      });
-    });
-
-    it('should notify copayers a new tx proposal has been created', function(done) {
-      helpers.stubUtxos(server, wallet, [1, 1], function() {
-        var txOpts = helpers.createProposalOpts('18PzpUFkFZE8zKWUPvfykkTxmB9oMR8qP7', 0.8, 'some message', TestData.copayers[0].privKey_1H_0);
-        server.createTx(txOpts, function(err, tx) {
-          should.not.exist(err);
-          var calls = sendMailStub.getCalls();
-          calls.length.should.equal(2);
-          var emails = _.map(calls, function(c) {
-            return c.args[0];
-          });
-          _.difference(['[email protected]', '[email protected]'], _.pluck(emails, 'to')).should.be.empty;
-          var one = emails[0];
-          one.from.should.equal('[email protected]');
-          one.subject.should.contain('New payment proposal');
-          one.text.should.contain(wallet.name);
-          one.text.should.contain(wallet.copayers[0].name);
-          server.storage.fetchUnsentEmails(function(err, unsent) {
-            should.not.exist(err);
-            unsent.should.be.empty;
-            done();
-          });
-        });
-      });
-    });
-  });
 });