Add SMTP appender
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druciak
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76
lib/appenders/smtp.js
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76
lib/appenders/smtp.js
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var layouts = require("../layouts"),
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mailer = require("nodemailer");
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/**
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* SMTP Appender. Sends logging events using SMTP protocol.
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* It can either send an email on each event or group several logging events gathered during specified interval.
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*
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* @param recipients comma separated list of email recipients
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* @param sender sender of all emails (defaults to SMTP user)
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* @param subject subject of all email messages (defaults to first event's message)
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* @param layout a function that takes a logevent and returns a string (defaults to basicLayout).
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* @param smtpConfig SMTP configuration for 'nodemailer'
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* @param sendInterval the time in seconds between sending attempts (defaults to 0);
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* all events are buffered and sent in one email during this time; if 0 than every event sends an email
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*/
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function smtpAppender(recipients, sender, subject, layout, smtpConfig, sendInterval) {
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sender = sender || smtpConfig.user;
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layout = layout || layouts.basicLayout;
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subjectLayout = layouts.messagePassThroughLayout;
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mailer.SMTP = smtpConfig;
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sendInterval = sendInterval*1000 || 0;
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var logEventBuffer = [];
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var sendTimer;
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function sendBuffer() {
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if (logEventBuffer.length == 0)
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return;
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var firstEvent = logEventBuffer[0];
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var body = "";
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while (logEventBuffer.length > 0) {
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body += layout(logEventBuffer.shift()) + "\n";
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}
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var msg = {
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sender: sender,
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to: recipients,
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subject: subject || subjectLayout(firstEvent),
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body: body
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};
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mailer.send_mail(msg, function(error, success) {
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if (error) {
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console.error("log4js.smtpAppender - Error happened ", error);
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}
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});
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}
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function scheduleSend() {
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if (!sendTimer)
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sendTimer = setTimeout(function() {
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sendTimer = null;
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sendBuffer();
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}, sendInterval);
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}
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return function(loggingEvent) {
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logEventBuffer.push(loggingEvent);
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if (sendInterval > 0)
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scheduleSend();
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else
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sendBuffer();
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};
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}
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function configure(config) {
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var layout;
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if (config.layout) {
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layout = layouts.layout(config.layout.type, config.layout);
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}
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return smtpAppender(config.recipients, config.sender, config.subject, layout, config.smtp, config.sendInterval);
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}
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exports.name = "smtp";
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exports.appender = smtpAppender;
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exports.configure = configure;
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162
test/smtpAppender.js
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162
test/smtpAppender.js
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var vows = require('vows'),
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assert = require('assert'),
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log4js = require('../lib/log4js'),
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sandbox = require('sandboxed-module');
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function setupLogging(category, options) {
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var msgs = [];
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var fakeMailer = {
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send_mail: function (msg, callback) {
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msgs.push(msg);
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callback(null, true);
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}
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};
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var smtpModule = sandbox.require('../lib/appenders/smtp', {
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requires: {
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'nodemailer': fakeMailer
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}
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});
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log4js.addAppender(smtpModule.configure(options), category);
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return {
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logger: log4js.getLogger(category),
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mailer: fakeMailer,
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results: msgs
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};
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}
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function checkMessages (result, sender, subject) {
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for (var i = 0; i < result.results.length; ++i) {
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assert.equal(result.results[i].sender, sender ? sender : result.mailer.SMTP.user);
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assert.equal(result.results[i].to, 'recipient@domain.com');
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assert.equal(result.results[i].subject, subject ? subject : 'Log event #' + (i+1));
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assert.ok(new RegExp('.+Log event #' + (i+1) + '\n$').test(result.results[i].body));
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}
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}
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log4js.clearAppenders();
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vows.describe('log4js smtpAppender').addBatch({
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'minimal config': {
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topic: function() {
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var setup = setupLogging('minimal config', {
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recipients: 'recipient@domain.com',
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smtp: {
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port: 25,
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user: 'user@domain.com'
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}
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});
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setup.logger.info('Log event #1');
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return setup;
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},
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'mailer should be configured properly': function (result) {
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assert.ok(result.mailer.SMTP);
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assert.equal(result.mailer.SMTP.port, 25);
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assert.equal(result.mailer.SMTP.user, 'user@domain.com');
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},
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'there should be one message only': function (result) {
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assert.equal(result.results.length, 1);
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},
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'message should contain proper data': function (result) {
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checkMessages(result);
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}
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},
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'fancy config': {
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topic: function() {
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var setup = setupLogging('fancy config', {
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recipients: 'recipient@domain.com',
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sender: 'sender@domain.com',
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subject: 'This is subject',
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smtp: {
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port: 25,
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user: 'user@domain.com'
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}
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});
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setup.logger.info('Log event #1');
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return setup;
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},
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'mailer should be configured properly': function (result) {
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assert.ok(result.mailer.SMTP);
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assert.equal(result.mailer.SMTP.port, 25);
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assert.equal(result.mailer.SMTP.user, 'user@domain.com');
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},
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'there should be one message only': function (result) {
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assert.equal(result.results.length, 1);
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},
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'message should contain proper data': function (result) {
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checkMessages(result, 'sender@domain.com', 'This is subject');
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}
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},
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'separate email for each event': {
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topic: function() {
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var self = this;
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var setup = setupLogging('separate email for each event', {
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recipients: 'recipient@domain.com',
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smtp: {
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port: 25,
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user: 'user@domain.com'
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}
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});
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setTimeout(function () {
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setup.logger.info('Log event #1');
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}, 0);
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setTimeout(function () {
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setup.logger.info('Log event #2');
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}, 500);
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setTimeout(function () {
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setup.logger.info('Log event #3');
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}, 1050);
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setTimeout(function () {
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self.callback(null, setup);
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}, 2100);
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},
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'there should be three messages': function (result) {
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assert.equal(result.results.length, 3);
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},
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'messages should contain proper data': function (result) {
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checkMessages(result);
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}
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},
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'multiple events in one email': {
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topic: function() {
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var self = this;
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var setup = setupLogging('multiple events in one email', {
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recipients: 'recipient@domain.com',
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sendInterval: 1,
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smtp: {
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port: 25,
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user: 'user@domain.com'
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}
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});
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setTimeout(function () {
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setup.logger.info('Log event #1');
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}, 0);
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setTimeout(function () {
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setup.logger.info('Log event #2');
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}, 500);
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setTimeout(function () {
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setup.logger.info('Log event #3');
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}, 1050);
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setTimeout(function () {
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self.callback(null, setup);
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}, 2100);
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},
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'there should be two messages': function (result) {
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assert.equal(result.results.length, 2);
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},
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'messages should contain proper data': function (result) {
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assert.equal(result.results[0].sender, result.mailer.SMTP.user);
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assert.equal(result.results[0].to, 'recipient@domain.com');
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assert.equal(result.results[0].subject, 'Log event #1');
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assert.equal(result.results[0].body.match(new RegExp('.+Log event #[1-2]$', 'gm')).length, 2);
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assert.equal(result.results[1].sender, result.mailer.SMTP.user);
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assert.equal(result.results[1].to, 'recipient@domain.com');
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assert.equal(result.results[1].subject, 'Log event #3');
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assert.ok(new RegExp('.+Log event #3\n$').test(result.results[1].body));
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}
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}
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}).export(module);
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