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boot.js
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boot.js
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var Fiber = require("fibers");
var fs = require("fs");
var path = require("path");
var Future = require("fibers/future");
var _ = require('underscore');
var sourcemap_support = require('source-map-support');
var bootUtils = require('./boot-utils.js');
var files = require('./mini-files.js');
var npmRequire = require('./npm-require.js').require;
// This code is duplicated in tools/main.js.
var MIN_NODE_VERSION = 'v0.10.41';
if (require('semver').lt(process.version, MIN_NODE_VERSION)) {
process.stderr.write(
'Meteor requires Node ' + MIN_NODE_VERSION + ' or later.\n');
process.exit(1);
}
// read our control files
var serverJsonPath = path.resolve(process.argv[2]);
var serverDir = path.dirname(serverJsonPath);
var serverJson = require("./server-json.js");
var configJson =
JSON.parse(fs.readFileSync(path.resolve(serverDir, 'config.json'), 'utf8'));
// Set up environment
__meteor_bootstrap__ = {
startupHooks: [],
serverDir: serverDir,
configJson: configJson };
__meteor_runtime_config__ = { meteorRelease: configJson.meteorRelease };
if (!process.env.APP_ID) {
process.env.APP_ID = configJson.appId;
}
// Map from load path to its source map.
var parsedSourceMaps = {};
// Read all the source maps into memory once.
_.each(serverJson.load, function (fileInfo) {
if (fileInfo.sourceMap) {
var rawSourceMap = fs.readFileSync(
path.resolve(serverDir, fileInfo.sourceMap), 'utf8');
// Parse the source map only once, not each time it's needed. Also remove
// the anti-XSSI header if it's there.
var parsedSourceMap = JSON.parse(rawSourceMap.replace(/^\)\]\}'/, ''));
// source-map-support doesn't ever look at the sourcesContent field, so
// there's no point in keeping it in memory.
delete parsedSourceMap.sourcesContent;
var url;
if (fileInfo.sourceMapRoot) {
// Add the specified root to any root that may be in the file.
parsedSourceMap.sourceRoot = path.join(
fileInfo.sourceMapRoot, parsedSourceMap.sourceRoot || '');
}
parsedSourceMaps[path.resolve(__dirname, fileInfo.path)] = parsedSourceMap;
}
});
var retrieveSourceMap = function (pathForSourceMap) {
if (_.has(parsedSourceMaps, pathForSourceMap))
return { map: parsedSourceMaps[pathForSourceMap] };
return null;
};
var origWrapper = sourcemap_support.wrapCallSite;
var wrapCallSite = function (frame) {
var frame = origWrapper(frame);
var wrapGetter = function (name) {
var origGetter = frame[name];
frame[name] = function (arg) {
// replace a custom location domain that we set for better UX in Chrome
// DevTools (separate domain group) in source maps.
var source = origGetter(arg);
if (! source)
return source;
return source.replace(/(^|\()meteor:\/\/..app\//, '$1');
};
};
wrapGetter('getScriptNameOrSourceURL');
wrapGetter('getEvalOrigin');
return frame;
};
sourcemap_support.install({
// Use the source maps specified in program.json instead of parsing source
// code for them.
retrieveSourceMap: retrieveSourceMap,
// For now, don't fix the source line in uncaught exceptions, because we
// haven't fixed handleUncaughtExceptions in source-map-support to properly
// locate the source files.
handleUncaughtExceptions: false,
wrapCallSite: wrapCallSite
});
// Only enabled by default in development.
if (process.env.METEOR_SHELL_DIR) {
require('./shell-server.js').listen(process.env.METEOR_SHELL_DIR);
}
// As a replacement to the old keepalives mechanism, check for a running
// parent every few seconds. Exit if the parent is not running.
//
// Two caveats to this strategy:
// * Doesn't catch the case where the parent is CPU-hogging (but maybe we
// don't want to catch that case anyway, since the bundler not yielding
// is what caused #2536).
// * Could be fooled by pid re-use, i.e. if another process comes up and
// takes the parent process's place before the child process dies.
var startCheckForLiveParent = function (parentPid) {
if (parentPid) {
if (! bootUtils.validPid(parentPid)) {
console.error("METEOR_PARENT_PID must be a valid process ID.");
process.exit(1);
}
setInterval(function () {
try {
process.kill(parentPid, 0);
} catch (err) {
console.error("Parent process is dead! Exiting.");
process.exit(1);
}
}, 3000);
}
};
Fiber(function () {
_.each(serverJson.load, function (fileInfo) {
var code = fs.readFileSync(path.resolve(serverDir, fileInfo.path));
var nonLocalNodeModulesPaths = [];
function addNodeModulesPath(path) {
nonLocalNodeModulesPaths.push(
files.pathResolve(serverDir, path)
);
}
if (typeof fileInfo.node_modules === "string") {
addNodeModulesPath(fileInfo.node_modules);
} else if (fileInfo.node_modules) {
_.each(fileInfo.node_modules, function (info, path) {
if (! info.local) {
addNodeModulesPath(path);
}
});
}
var Npm = {
/**
* @summary Require a package that was specified using
* `Npm.depends()`.
* @param {String} name The name of the package to require.
* @locus Server
* @memberOf Npm
*/
require: function (name) {
if (nonLocalNodeModulesPaths.length === 0) {
return require(name);
}
var fullPath;
nonLocalNodeModulesPaths.some(function (nodeModuleBase) {
var packageBase = files.convertToOSPath(files.pathResolve(
nodeModuleBase,
name.split("/", 1)[0]
));
if (fs.existsSync(packageBase)) {
return fullPath = files.convertToOSPath(
files.pathResolve(nodeModuleBase, name)
);
}
});
if (fullPath) {
return require(fullPath);
}
try {
return require(name);
} catch (e) {
// Try to guess the package name so we can print a nice
// error message
// fileInfo.path is a standard path, use files.pathSep
var filePathParts = fileInfo.path.split(files.pathSep);
var packageName = filePathParts[1].replace(/\.js$/, '');
// XXX better message
throw new Error(
"Can't find npm module '" + name +
"'. Did you forget to call 'Npm.depends' in package.js " +
"within the '" + packageName + "' package?");
}
}
};
var getAsset = function (assetPath, encoding, callback) {
var fut;
if (! callback) {
fut = new Future();
callback = fut.resolver();
}
// This assumes that we've already loaded the meteor package, so meteor
// itself can't call Assets.get*. (We could change this function so that
// it doesn't call bindEnvironment if you don't pass a callback if we need
// to.)
var _callback = Package.meteor.Meteor.bindEnvironment(function (err, result) {
if (result && ! encoding)
// Sadly, this copies in Node 0.10.
result = new Uint8Array(result);
callback(err, result);
}, function (e) {
console.log("Exception in callback of getAsset", e.stack);
});
// Convert a DOS-style path to Unix-style in case the application code was
// written on Windows.
assetPath = files.convertToStandardPath(assetPath);
if (!fileInfo.assets || !_.has(fileInfo.assets, assetPath)) {
_callback(new Error("Unknown asset: " + assetPath));
} else {
var filePath = path.join(serverDir, fileInfo.assets[assetPath]);
fs.readFile(files.convertToOSPath(filePath), encoding, _callback);
}
if (fut)
return fut.wait();
};
var Assets = {
getText: function (assetPath, callback) {
return getAsset(assetPath, "utf8", callback);
},
getBinary: function (assetPath, callback) {
return getAsset(assetPath, undefined, callback);
},
absoluteFilePath: function (assetPath) {
if (!fileInfo.assets || !_.has(fileInfo.assets, assetPath)) {
throw new Error("Unknown asset: " + assetPath);
}
assetPath = files.convertToStandardPath(assetPath);
var filePath = path.join(serverDir, fileInfo.assets[assetPath]);
return files.convertToOSPath(filePath);
},
};
var isModulesRuntime =
fileInfo.path === "packages/modules-runtime.js";
var wrapParts = ["(function(Npm,Assets"];
if (isModulesRuntime) {
wrapParts.push(",npmRequire");
}
// \n is necessary in case final line is a //-comment
wrapParts.push("){", code, "\n})");
var wrapped = wrapParts.join("");
// It is safer to use the absolute path when source map is present as
// different tooling, such as node-inspector, can get confused on relative
// urls.
// fileInfo.path is a standard path, convert it to OS path to join with
// __dirname
var fileInfoOSPath = files.convertToOSPath(fileInfo.path);
var absoluteFilePath = path.resolve(__dirname, fileInfoOSPath);
var scriptPath =
parsedSourceMaps[absoluteFilePath] ? absoluteFilePath : fileInfoOSPath;
// The final 'true' is an undocumented argument to runIn[Foo]Context that
// causes it to print out a descriptive error message on parse error. It's
// what require() uses to generate its errors.
var func = require('vm').runInThisContext(wrapped, scriptPath, true);
var args = [Npm, Assets];
if (isModulesRuntime) {
args.push(npmRequire);
}
func.apply(global, args);
});
// run the user startup hooks. other calls to startup() during this can still
// add hooks to the end.
while (__meteor_bootstrap__.startupHooks.length) {
var hook = __meteor_bootstrap__.startupHooks.shift();
hook();
}
// Setting this to null tells Meteor.startup to call hooks immediately.
__meteor_bootstrap__.startupHooks = null;
// find and run main()
// XXX hack. we should know the package that contains main.
var mains = [];
var globalMain;
if ('main' in global) {
mains.push(main);
globalMain = main;
}
typeof Package !== 'undefined' && _.each(Package, function (p, n) {
if ('main' in p && p.main !== globalMain) {
mains.push(p.main);
}
});
if (! mains.length) {
process.stderr.write("Program has no main() function.\n");
process.exit(1);
}
if (mains.length > 1) {
process.stderr.write("Program has more than one main() function?\n");
process.exit(1);
}
var exitCode = mains[0].call({}, process.argv.slice(3));
// XXX hack, needs a better way to keep alive
if (exitCode !== 'DAEMON')
process.exit(exitCode);
if (process.env.METEOR_PARENT_PID) {
startCheckForLiveParent(process.env.METEOR_PARENT_PID);
}
}).run();