loopback/lib/middleware/configure.js

68 lines
1.5 KiB
JavaScript

/**
* Module dependencies.
*/
var ModuleLoader = require('sl-module-loader')
, path = require('path');
/**
* Export the middleware.
*/
module.exports = configure;
/**
* Load application modules based on the current directories configuration files.
*/
function configure(root) {
var moduleLoader = configure.createModuleLoader(root);
var app = this;
process.__asteroidCache = {};
return function configureMiddleware(req, res, next) {
var modules = req.modules = res.modules = moduleLoader;
moduleLoader.load(function (err) {
if(err) {
next(err);
} else {
var models = modules.instanceOf('ModelConfiguration');
var dataSources = modules.instanceOf('DataSource');
// define models from config
models.forEach(function (model) {
app.models[model.options.name] = model.ModelCtor;
});
// define data sources from config
dataSources.forEach(function (dataSource) {
app.dataSources[dataSources.options.name] = dataSource;
});
next();
}
});
}
}
configure.createModuleLoader = function (root) {
var options = {
alias: BUNDLED_MODULE_ALIAS
};
return ModuleLoader.create(root || '.', options);
};
/**
* Turn asteroid bundled deps into aliases for the module loader
*/
var BUNDLED_MODULE_ALIAS = require('../../package.json')
.bundleDependencies
.reduce(function (prev, cur) {
prev[cur] = path.join('asteroid', 'node_modules', cur);
return prev;
}, {});