mirror of
https://github.com/TryGhost/Ghost.git
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311 lines
10 KiB
JavaScript
311 lines
10 KiB
JavaScript
// Module dependencies
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var crypto = require('crypto'),
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express = require('express'),
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hbs = require('express-hbs'),
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compress = require('compression'),
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fs = require('fs'),
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uuid = require('node-uuid'),
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semver = require('semver'),
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_ = require('lodash'),
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when = require('when'),
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api = require('./api'),
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config = require('./config'),
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errors = require('./errors'),
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helpers = require('./helpers'),
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mailer = require('./mail'),
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middleware = require('./middleware'),
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migrations = require('./data/migration'),
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models = require('./models'),
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permissions = require('./permissions'),
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apps = require('./apps'),
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packageInfo = require('../../package.json'),
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// Variables
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httpServer,
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dbHash;
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// If we're in development mode, require "when/console/monitor"
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// for help in seeing swallowed promise errors, and log any
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// stderr messages from bluebird promises.
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if (process.env.NODE_ENV === 'development') {
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require('when/monitor/console');
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}
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function doFirstRun() {
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var firstRunMessage = [
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'Welcome to Ghost.',
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'You\'re running under the <strong>',
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process.env.NODE_ENV,
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'</strong>environment.',
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'Your URL is set to',
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'<strong>' + config.url + '</strong>.',
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'See <a href="http://support.ghost.org/" target="_blank">http://support.ghost.org</a> for instructions.'
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];
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return api.notifications.add({ notifications: [{
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type: 'info',
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message: firstRunMessage.join(' ')
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}] }, {context: {internal: true}});
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}
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function initDbHashAndFirstRun() {
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return api.settings.read({key: 'dbHash', context: {internal: true}}).then(function (response) {
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var hash = response.settings[0].value,
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initHash;
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dbHash = hash;
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if (dbHash === null) {
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initHash = uuid.v4();
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return api.settings.edit({settings: [{key: 'dbHash', value: initHash}]}, {context: {internal: true}})
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.then(function (response) {
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dbHash = response.settings[0].value;
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return dbHash;
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}).then(doFirstRun);
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}
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return dbHash;
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});
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}
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// Checks for the existence of the "built" javascript files from grunt concat.
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// Returns a promise that will be resolved if all files exist or rejected if
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// any are missing.
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function builtFilesExist() {
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var deferreds = [],
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location = config.paths.builtScriptPath,
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fileNames = process.env.NODE_ENV === 'production' ?
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helpers.scriptFiles.production : helpers.scriptFiles.development;
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function checkExist(fileName) {
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var deferred = when.defer(),
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errorMessage = "Javascript files have not been built.",
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errorHelp = "\nPlease read the getting started instructions at:" +
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"\nhttps://github.com/TryGhost/Ghost#getting-started-guide-for-developers";
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fs.exists(fileName, function (exists) {
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if (exists) {
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deferred.resolve(true);
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} else {
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var err = new Error(errorMessage);
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err.help = errorHelp;
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deferred.reject(err);
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}
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});
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return deferred.promise;
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}
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fileNames.forEach(function (fileName) {
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deferreds.push(checkExist(location + fileName));
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});
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return when.all(deferreds);
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}
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function ghostStartMessages() {
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// Tell users if their node version is not supported, and exit
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if (!semver.satisfies(process.versions.node, packageInfo.engines.node)) {
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console.log(
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"\nERROR: Unsupported version of Node".red,
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"\nGhost needs Node version".red,
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packageInfo.engines.node.yellow,
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"you are using version".red,
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process.versions.node.yellow,
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"\nPlease go to http://nodejs.org to get a supported version".green
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);
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process.exit(0);
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}
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// Startup & Shutdown messages
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if (process.env.NODE_ENV === 'production') {
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console.log(
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"Ghost is running...".green,
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"\nYour blog is now available on",
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config.url,
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"\nCtrl+C to shut down".grey
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);
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// ensure that Ghost exits correctly on Ctrl+C
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process.removeAllListeners('SIGINT').on('SIGINT', function () {
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console.log(
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"\nGhost has shut down".red,
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"\nYour blog is now offline"
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);
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process.exit(0);
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});
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} else {
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console.log(
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("Ghost is running in " + process.env.NODE_ENV + "...").green,
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"\nListening on",
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config.getSocket() || config.server.host + ':' + config.server.port,
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"\nUrl configured as:",
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config.url,
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"\nCtrl+C to shut down".grey
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);
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// ensure that Ghost exits correctly on Ctrl+C
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process.removeAllListeners('SIGINT').on('SIGINT', function () {
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console.log(
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"\nGhost has shutdown".red,
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"\nGhost was running for",
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Math.round(process.uptime()),
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"seconds"
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);
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process.exit(0);
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});
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}
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}
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// This is run after every initialization is done, right before starting server.
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// Its main purpose is to move adding notifications here, so none of the submodules
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// should need to include api, which previously resulted in circular dependencies.
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// This is also a "one central repository" of adding startup notifications in case
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// in the future apps will want to hook into here
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function initNotifications() {
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if (mailer.state && mailer.state.usingSendmail) {
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api.notifications.add({ notifications: [{
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type: 'info',
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message: [
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"Ghost is attempting to use your server's <b>sendmail</b> to send e-mail.",
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"It is recommended that you explicitly configure an e-mail service,",
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"See <a href=\"http://support.ghost.org/mail\" target=\"_blank\">http://support.ghost.org/mail</a> for instructions"
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].join(' ')
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}] }, {context: {internal: true}});
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}
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if (mailer.state && mailer.state.emailDisabled) {
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api.notifications.add({ notifications: [{
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type: 'warn',
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message: [
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"Ghost is currently unable to send e-mail.",
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"See <a href=\"http://support.ghost.org/mail\" target=\"_blank\">http://support.ghost.org/mail</a> for instructions"
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].join(' ')
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}] }, {context: {internal: true}});
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}
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}
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// ## Initializes the ghost application.
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// Sets up the express server instance.
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// Instantiates the ghost singleton, helpers, routes, middleware, and apps.
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// Finally it starts the http server.
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function init(server) {
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// create a hash for cache busting assets
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var assetHash = (crypto.createHash('md5').update(packageInfo.version + Date.now()).digest('hex')).substring(0, 10);
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// If no express instance is passed in
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// then create our own
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if (!server) {
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server = express();
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}
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// ### Initialisation
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// The server and its dependencies require a populated config
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// It returns a promise that is resolved when the application
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// has finished starting up.
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// Make sure javascript files have been built via grunt concat
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return builtFilesExist().then(function () {
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// Initialise the models
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return models.init();
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}).then(function () {
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// Initialize migrations
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return migrations.init();
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}).then(function () {
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// Populate any missing default settings
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return models.Settings.populateDefaults();
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}).then(function () {
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// Initialize the settings cache
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return api.init();
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}).then(function () {
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// Initialize the permissions actions and objects
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// NOTE: Must be done before the config.theme.update and initDbHashAndFirstRun calls
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return permissions.init();
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}).then(function () {
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// We must pass the api.settings object
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// into this method due to circular dependencies.
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return config.theme.update(api.settings, config.url);
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}).then(function () {
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return when.join(
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// Check for or initialise a dbHash.
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initDbHashAndFirstRun(),
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// Initialize mail
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mailer.init(),
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// Initialize apps
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apps.init()
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);
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}).then(function () {
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var adminHbs = hbs.create(),
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deferred = when.defer();
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// Output necessary notifications on init
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initNotifications();
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// ##Configuration
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// return the correct mime type for woff filess
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express['static'].mime.define({'application/font-woff': ['woff']});
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// enabled gzip compression by default
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if (config.server.compress !== false) {
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server.use(compress());
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}
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// ## View engine
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// set the view engine
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server.set('view engine', 'hbs');
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// Create a hbs instance for admin and init view engine
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server.set('admin view engine', adminHbs.express3({}));
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// Load helpers
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helpers.loadCoreHelpers(adminHbs, assetHash);
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// ## Middleware and Routing
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middleware(server, dbHash);
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// Log all theme errors and warnings
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_.each(config.paths.availableThemes._messages.errors, function (error) {
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errors.logError(error.message, error.context, error.help);
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});
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_.each(config.paths.availableThemes._messages.warns, function (warn) {
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errors.logWarn(warn.message, warn.context, warn.help);
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});
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// ## Start Ghost App
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if (config.getSocket()) {
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// Make sure the socket is gone before trying to create another
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try {
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fs.unlinkSync(config.getSocket());
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} catch (e) {
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// We can ignore this.
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}
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httpServer = server.listen(
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config.getSocket()
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);
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fs.chmod(config.getSocket(), '0660');
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} else {
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httpServer = server.listen(
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config.server.port,
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config.server.host
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);
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}
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httpServer.on('listening', function () {
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ghostStartMessages();
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deferred.resolve(httpServer);
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});
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return deferred.promise;
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});
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}
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module.exports = init;
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