mirror of
https://github.com/meteor/meteor.git
synced 2026-05-02 03:01:46 -04:00
560 lines
18 KiB
JavaScript
560 lines
18 KiB
JavaScript
////////// Requires //////////
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var fs = Npm.require("fs");
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var http = Npm.require("http");
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var os = Npm.require("os");
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var path = Npm.require("path");
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var url = Npm.require("url");
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var crypto = Npm.require("crypto");
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var connect = Npm.require('connect');
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var optimist = Npm.require('optimist');
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var useragent = Npm.require('useragent');
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var send = Npm.require('send');
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// @export WebApp
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WebApp = {};
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var findGalaxy = _.once(function () {
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if (!('GALAXY' in process.env)) {
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console.log(
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"To do Meteor Galaxy operations like binding to a Galaxy " +
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"proxy, the GALAXY environment variable must be set.");
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process.exit(1);
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}
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return Meteor.connect(process.env['GALAXY']);
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});
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// Keepalives so that when the outer server dies unceremoniously and
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// doesn't kill us, we quit ourselves. A little gross, but better than
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// pidfiles.
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// XXX This should really be part of the boot script, not the webapp package.
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// Or we should just get rid of it, and rely on containerization.
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var initKeepalive = function () {
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var keepaliveCount = 0;
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process.stdin.on('data', function (data) {
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keepaliveCount = 0;
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});
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process.stdin.resume();
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setInterval(function () {
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keepaliveCount ++;
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if (keepaliveCount >= 3) {
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console.log("Failed to receive keepalive! Exiting.");
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process.exit(1);
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}
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}, 3000);
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};
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var sha1 = function (contents) {
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var hash = crypto.createHash('sha1');
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hash.update(contents);
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return hash.digest('hex');
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};
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// #BrowserIdentification
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//
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// We have multiple places that want to identify the browser: the
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// unsupported browser page, the appcache package, and, eventually
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// delivering browser polyfills only as needed.
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//
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// To avoid detecting the browser in multiple places ad-hoc, we create a
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// Meteor "browser" object. It uses but does not expose the npm
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// useragent module (we could choose a different mechanism to identify
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// the browser in the future if we wanted to). The browser object
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// contains
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//
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// * `name`: the name of the browser in camel case
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// * `major`, `minor`, `patch`: integers describing the browser version
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//
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// Also here is an early version of a Meteor `request` object, intended
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// to be a high-level description of the request without exposing
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// details of connect's low-level `req`. Currently it contains:
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//
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// * `browser`: browser identification object described above
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// * `url`: parsed url, including parsed query params
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//
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// As a temporary hack there is a `categorizeRequest` function on WebApp which
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// converts a connect `req` to a Meteor `request`. This can go away once smart
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// packages such as appcache are being passed a `request` object directly when
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// they serve content.
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//
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// This allows `request` to be used uniformly: it is passed to the html
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// attributes hook, and the appcache package can use it when deciding
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// whether to generate a 404 for the manifest.
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//
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// Real routing / server side rendering will probably refactor this
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// heavily.
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// e.g. "Mobile Safari" => "mobileSafari"
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var camelCase = function (name) {
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var parts = name.split(' ');
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parts[0] = parts[0].toLowerCase();
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for (var i = 1; i < parts.length; ++i) {
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parts[i] = parts[i].charAt(0).toUpperCase() + parts[i].substr(1);
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}
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return parts.join('');
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};
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var identifyBrowser = function (req) {
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var userAgent = useragent.lookup(req.headers['user-agent']);
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return {
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name: camelCase(userAgent.family),
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major: +userAgent.major,
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minor: +userAgent.minor,
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patch: +userAgent.patch
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};
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};
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WebApp.categorizeRequest = function (req) {
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return {
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browser: identifyBrowser(req),
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url: url.parse(req.url, true)
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};
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};
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// HTML attribute hooks: functions to be called to determine any attributes to
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// be added to the '<html>' tag. Each function is passed a 'request' object (see
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// #BrowserIdentification) and should return a string,
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var htmlAttributeHooks = [];
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var htmlAttributes = function (template, request) {
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var attributes = '';
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_.each(htmlAttributeHooks || [], function (hook) {
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var attribute = hook(request);
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if (attribute !== null && attribute !== undefined && attribute !== '')
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attributes += ' ' + attribute;
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});
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return template.replace('##HTML_ATTRIBUTES##', attributes);
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};
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WebApp.addHtmlAttributeHook = function (hook) {
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htmlAttributeHooks.push(hook);
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};
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// Serve app HTML for this URL?
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var appUrl = function (url) {
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if (url === '/favicon.ico' || url === '/robots.txt')
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return false;
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// NOTE: app.manifest is not a web standard like favicon.ico and
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// robots.txt. It is a file name we have chosen to use for HTML5
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// appcache URLs. It is included here to prevent using an appcache
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// then removing it from poisoning an app permanently. Eventually,
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// once we have server side routing, this won't be needed as
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// unknown URLs with return a 404 automatically.
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if (url === '/app.manifest')
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return false;
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// Avoid serving app HTML for declared routes such as /sockjs/.
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if (RoutePolicy.classify(url))
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return false;
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// we currently return app HTML on all URLs by default
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return true;
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};
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// This is used to move legacy environment variables into deployConfig, where
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// other packages look for them. We probably don't want it here forever.
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var copyEnvVarToDeployConfig = function (deployConfig, envVar,
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packageName, configKey) {
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if (process.env[envVar]) {
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if (! deployConfig.packages[packageName])
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deployConfig.packages[packageName] = {};
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deployConfig.packages[packageName][configKey] = process.env[envVar];
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}
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};
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var runWebAppServer = function () {
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// read the control for the client we'll be serving up
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var clientJsonPath = path.join(__meteor_bootstrap__.serverDir,
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__meteor_bootstrap__.configJson.client);
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var clientDir = path.dirname(clientJsonPath);
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var clientJson = JSON.parse(fs.readFileSync(clientJsonPath, 'utf8'));
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if (clientJson.format !== "browser-program-pre1")
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throw new Error("Unsupported format for client assets: " +
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JSON.stringify(clientJson.format));
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// XXX change all this config to something more reasonable
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var deployConfig =
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process.env.METEOR_DEPLOY_CONFIG
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? JSON.parse(process.env.METEOR_DEPLOY_CONFIG) : {};
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if (!deployConfig.packages)
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deployConfig.packages = {};
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if (!deployConfig.boot)
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deployConfig.boot = {};
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if (!deployConfig.boot.bind)
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deployConfig.boot.bind = {};
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// check environment for legacy env variables.
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if (process.env.PORT && !_.has(deployConfig.boot.bind, 'localPort')) {
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deployConfig.boot.bind.localPort = parseInt(process.env.PORT);
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}
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copyEnvVarToDeployConfig(deployConfig, "MONGO_URL", "mongo-livedata", "url");
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// webserver
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var app = connect();
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// Strip off the path prefix, if it exists.
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app.use(function (request, response, next) {
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var pathPrefix = __meteor_runtime_config__.ROOT_URL_PATH_PREFIX;
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var url = Npm.require('url').parse(request.url);
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var pathname = url.pathname;
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// check if the path in the url starts with the path prefix (and the part
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// after the path prefix must start with a / if it exists.)
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if (pathPrefix && pathname.substring(0, pathPrefix.length) === pathPrefix &&
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(pathname.length == pathPrefix.length
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|| pathname.substring(pathPrefix.length, pathPrefix.length + 1) === "/")) {
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request.url = request.url.substring(pathPrefix.length);
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next();
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} else if (pathname === "/favicon.ico" || pathname === "/robots.txt") {
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next();
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} else if (pathPrefix) {
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response.writeHead(404);
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response.write("Unknown path");
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response.end();
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} else {
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next();
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}
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});
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// Parse the query string into res.query. Used by oauth_server, but it's
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// generally pretty handy..
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app.use(connect.query());
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// Auto-compress any json, javascript, or text.
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app.use(connect.compress());
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var staticFiles = {};
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_.each(clientJson.manifest, function (item) {
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if (item.url && item.where === "client") {
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staticFiles[url.parse(item.url).pathname] = {
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path: item.path,
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cacheable: item.cacheable,
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// Link from source to its map
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sourceMapUrl: item.sourceMapUrl
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};
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if (item.sourceMap) {
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// Serve the source map too, under the specified URL. We assume all
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// source maps are cacheable.
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staticFiles[url.parse(item.sourceMapUrl).pathname] = {
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path: item.sourceMap,
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cacheable: true
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};
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}
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}
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});
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// Serve static files from the manifest.
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// This is inspired by the 'static' middleware.
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app.use(function (req, res, next) {
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if ('GET' != req.method && 'HEAD' != req.method) {
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next();
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return;
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}
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var pathname = connect.utils.parseUrl(req).pathname;
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try {
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pathname = decodeURIComponent(pathname);
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} catch (e) {
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next();
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return;
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}
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if (!_.has(staticFiles, pathname)) {
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next();
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return;
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}
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// We don't need to call pause because, unlike 'static', once we call into
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// 'send' and yield to the event loop, we never call another handler with
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// 'next'.
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var info = staticFiles[pathname];
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// Cacheable files are files that should never change. Typically
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// named by their hash (eg meteor bundled js and css files).
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// We cache them ~forever (1yr).
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//
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// We cache non-cacheable files anyway. This isn't really correct, as users
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// can change the files and changes won't propagate immediately. However, if
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// we don't cache them, browsers will 'flicker' when rerendering
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// images. Eventually we will probably want to rewrite URLs of static assets
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// to include a query parameter to bust caches. That way we can both get
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// good caching behavior and allow users to change assets without delay.
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// https://github.com/meteor/meteor/issues/773
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var maxAge = info.cacheable
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? 1000 * 60 * 60 * 24 * 365
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: 1000 * 60 * 60 * 24;
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// Set the X-SourceMap header, which current Chrome understands.
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// (The files also contain '//#' comments which FF 24 understands and
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// Chrome doesn't understand yet.)
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//
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// Eventually we should set the SourceMap header but the current version of
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// Chrome and no version of FF supports it.
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//
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// To figure out if your version of Chrome should support the SourceMap
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// header,
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// - go to chrome://version. Let's say the Chrome version is
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// 28.0.1500.71 and the Blink version is 537.36 (@153022)
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// - go to http://src.chromium.org/viewvc/blink/branches/chromium/1500/Source/core/inspector/InspectorPageAgent.cpp?view=log
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// where the "1500" is the third part of your Chrome version
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// - find the first revision that is no greater than the "153022"
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// number. That's probably the first one and it probably has
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// a message of the form "Branch 1500 - blink@r149738"
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// - If *that* revision number (149738) is at least 151755,
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// then Chrome should support SourceMap (not just X-SourceMap)
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// (The change is https://codereview.chromium.org/15832007)
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//
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// You also need to enable source maps in Chrome: open dev tools, click
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// the gear in the bottom right corner, and select "enable source maps".
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//
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// Firefox 23+ supports source maps but doesn't support either header yet,
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// so we include the '//#' comment for it:
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// https://bugzilla.mozilla.org/show_bug.cgi?id=765993
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// In FF 23 you need to turn on `devtools.debugger.source-maps-enabled`
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// in `about:config` (it is on by default in FF 24).
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if (info.sourceMapUrl)
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res.setHeader('X-SourceMap', info.sourceMapUrl);
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send(req, path.join(clientDir, info.path))
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.maxage(maxAge)
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.hidden(true) // if we specified a dotfile in the manifest, serve it
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.on('error', function (err) {
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Log.error("Error serving static file " + err);
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res.writeHead(500);
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res.end();
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})
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.on('directory', function () {
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Log.error("Unexpected directory " + info.path);
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res.writeHead(500);
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res.end();
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})
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.pipe(res);
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});
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// Packages and apps can add handlers to this via WebApp.connectHandlers.
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// They are inserted before our default handler.
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var packageAndAppHandlers = connect();
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app.use(packageAndAppHandlers);
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var suppressConnectErrors = false;
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// connect knows it is an error handler because it has 4 arguments instead of
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// 3. go figure. (It is not smart enough to find such a thing if it's hidden
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// inside packageAndAppHandlers.)
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app.use(function (err, req, res, next) {
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if (!err || !suppressConnectErrors || !req.headers['x-suppress-error']) {
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next(err);
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return;
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}
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res.writeHead(err.status, { 'Content-Type': 'text/plain' });
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res.end("An error message");
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});
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// Will be updated by main before we listen.
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var boilerplateHtml = null;
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app.use(function (req, res, next) {
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if (! appUrl(req.url))
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return next();
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if (!boilerplateHtml)
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throw new Error("boilerplateHtml should be set before listening!");
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var request = WebApp.categorizeRequest(req);
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res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
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var requestSpecificHtml = htmlAttributes(boilerplateHtml, request);
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res.write(requestSpecificHtml);
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res.end();
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return undefined;
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});
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// Return 404 by default, if no other handlers serve this URL.
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app.use(function (req, res) {
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res.writeHead(404);
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res.end();
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});
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var httpServer = http.createServer(app);
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var onListeningCallbacks = [];
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// start up app
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_.extend(WebApp, {
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connectHandlers: packageAndAppHandlers,
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httpServer: httpServer,
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// metadata about the client program that we serve
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clientProgram: {
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manifest: clientJson.manifest
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// XXX do we need a "root: clientDir" field here? it used to be here but
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// was unused.
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},
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// For testing.
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suppressConnectErrors: function () {
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suppressConnectErrors = true;
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},
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onListening: function (f) {
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if (onListeningCallbacks)
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onListeningCallbacks.push(f);
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else
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f();
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},
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// Hack: allow http tests to call connect.basicAuth without making them
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// Npm.depends on another copy of connect. (That would be fine if we could
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// have test-only NPM dependencies but is overkill here.)
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__basicAuth__: connect.basicAuth
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});
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// XXX move deployConfig out of __meteor_bootstrap__, after deciding where in
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// the world it goes. maybe a new deploy-config package?
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_.extend(__meteor_bootstrap__, {
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deployConfig: deployConfig
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});
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// Let the rest of the packages (and Meteor.startup hooks) insert connect
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// middlewares and update __meteor_runtime_config__, then keep going to set up
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// actually serving HTML.
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// @export main
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main = function (argv) {
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argv = optimist(argv).boolean('keepalive').argv;
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var boilerplateHtmlPath = path.join(clientDir, clientJson.page);
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boilerplateHtml =
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fs.readFileSync(boilerplateHtmlPath, 'utf8')
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.replace(
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"// ##RUNTIME_CONFIG##",
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"__meteor_runtime_config__ = " +
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JSON.stringify(__meteor_runtime_config__) + ";")
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.replace(
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/##ROOT_URL_PATH_PREFIX##/g,
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__meteor_runtime_config__.ROOT_URL_PATH_PREFIX || "");
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// only start listening after all the startup code has run.
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var bind = deployConfig.boot.bind;
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httpServer.listen(bind.localPort || 0, Meteor.bindEnvironment(function() {
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if (argv.keepalive || true)
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console.log("LISTENING"); // must match run.js
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var port = httpServer.address().port;
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if (bind.viaProxy && bind.viaProxy.proxyEndpoint) {
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Meteor._bindToProxy(bind.viaProxy);
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} else if (bind.viaProxy) {
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// bind via the proxy, but we'll have to find it ourselves via
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// ultraworld.
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var galaxy = findGalaxy();
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galaxy.subscribe('servicesByName', 'proxy');
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var Proxies = new Meteor.Collection('services', {
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manager: galaxy
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});
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var doBinding = function (proxyService) {
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if (proxyService.providers.proxy) {
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Log("Attempting to bind to proxy at " + proxyService.providers.proxy);
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Meteor._bindToProxy(_.extend({
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proxyEndpoint: proxyService.providers.proxy
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}, bind.viaProxy));
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}
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};
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Proxies.find().observe({
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added: doBinding,
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changed: doBinding
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});
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}
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var callbacks = onListeningCallbacks;
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onListeningCallbacks = null;
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_.each(callbacks, function (x) { x(); });
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}, function (e) {
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console.error("Error listening:", e);
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console.error(e.stack);
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}));
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if (argv.keepalive)
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initKeepalive();
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return 'DAEMON';
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};
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};
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Meteor._bindToProxy = function (proxyConfig) {
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var securePort = proxyConfig.securePort || 4433;
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var insecurePort = proxyConfig.insecurePort || 8080;
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var bindPathPrefix = proxyConfig.bindPathPrefix || "";
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// XXX also support galaxy-based lookup
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if (!proxyConfig.proxyEndpoint)
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throw new Error("missing proxyEndpoint");
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if (!proxyConfig.bindHost)
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throw new Error("missing bindHost");
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// XXX move these into deployConfig?
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if (!process.env.GALAXY_JOB)
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throw new Error("missing $GALAXY_JOB");
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if (!process.env.GALAXY_APP)
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throw new Error("missing $GALAXY_APP");
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if (!process.env.LAST_START)
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throw new Error("missing $LAST_START");
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// XXX rename pid argument to bindTo.
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var pid = {
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job: process.env.GALAXY_JOB,
|
|
lastStarted: process.env.LAST_START,
|
|
app: process.env.GALAXY_APP
|
|
};
|
|
var myHost = os.hostname();
|
|
|
|
var ddpBindTo = {
|
|
ddpUrl: 'ddp://' + proxyConfig.bindHost + ':' + securePort + bindPathPrefix + '/',
|
|
insecurePort: insecurePort
|
|
};
|
|
|
|
// This is run after packages are loaded (in main) so we can use
|
|
// Meteor.connect.
|
|
var proxy = Meteor.connect(proxyConfig.proxyEndpoint);
|
|
var route = process.env.ROUTE;
|
|
var host = route.split(":")[0];
|
|
var port = +route.split(":")[1];
|
|
proxy.call('bindDdp', {
|
|
pid: pid,
|
|
bindTo: ddpBindTo,
|
|
proxyTo: {
|
|
host: host,
|
|
port: port,
|
|
pathPrefix: bindPathPrefix + '/websocket'
|
|
}
|
|
});
|
|
proxy.call('bindHttp', {
|
|
pid: pid,
|
|
bindTo: {
|
|
host: proxyConfig.bindHost,
|
|
port: insecurePort,
|
|
pathPrefix: bindPathPrefix
|
|
},
|
|
proxyTo: {
|
|
host: host,
|
|
port: port,
|
|
pathPrefix: bindPathPrefix
|
|
}
|
|
});
|
|
if (proxyConfig.securePort !== null) {
|
|
proxy.call('bindHttp', {
|
|
pid: pid,
|
|
bindTo: {
|
|
host: proxyConfig.bindHost,
|
|
port: securePort,
|
|
pathPrefix: bindPathPrefix,
|
|
ssl: true
|
|
},
|
|
proxyTo: {
|
|
host: host,
|
|
port: port,
|
|
pathPrefix: bindPathPrefix
|
|
}
|
|
});
|
|
}
|
|
Log("Bound to proxy");
|
|
};
|
|
|
|
runWebAppServer();
|