124 lines
4.8 KiB
JavaScript
124 lines
4.8 KiB
JavaScript
/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/*global define,Promise*/
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/**
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* Module defining BundleResolver. Created by vwoeltje on 11/4/14.
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*/
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define(
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[],
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function () {
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"use strict";
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/**
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* Responsible for the extension resolution phase of framework
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* initialization. During this phase, any scripts implementing
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* extensions provided by bundles are loaded.
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*
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* @constructor
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*/
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function BundleResolver(extensionResolver, requireConfigurator, $log) {
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/**
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* Merge resolved bundles (where each is expressed as an
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* object containing key-value pairs, where keys are extension
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* categories and values are arrays of resolved extensions)
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* into one large object containing resolved extensions from
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* all bundles (in the same form.)
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*
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* @param {Object.<string, object[]>|Array} resolvedBundles
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* @returns {Object.<string, object[]>}
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*/
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function mergeResolvedBundles(resolvedBundles) {
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var result = {};
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resolvedBundles.forEach(function (resolved) {
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Object.keys(resolved).forEach(function (k) {
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result[k] = (result[k] || []).concat(resolved[k]);
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});
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});
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return result;
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}
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// Resolve a bundle; resolve all extensions, and return
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// the resolved extensions in an object in the format described
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// for mergeResolvedBundles above
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function resolveBundle(bundle) {
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var categories = bundle.getExtensionCategories(),
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result = {};
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function resolveExtension(extension) {
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var category = extension.getCategory();
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function push(resolved) {
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result[category].push(resolved);
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}
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return extensionResolver.resolve(extension).then(push);
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}
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function resolveCategory(category) {
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result[category] = [];
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return Promise.all(
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bundle.getExtensions(category).map(resolveExtension)
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);
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}
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function giveResult() {
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return result;
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}
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// Log the large-scale task
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$log.info(
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"Resolving extensions for bundle " + bundle.getLogName()
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);
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return Promise.all(categories.map(resolveCategory))
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.then(giveResult);
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}
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return {
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/**
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* Resolve all extensions exposed by these bundles.
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*
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* @param {Bundle[]} bundles the bundles to resolve
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* @returns {Promise.<Object.<string, object[]>>} an promise
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* for an object containing
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* key-value pairs, where keys are extension
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* categories and values are arrays of resolved
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* extensions belonging to those categories
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*/
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resolveBundles: function (bundles) {
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// First, make sure Require is suitably configured
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requireConfigurator.configure(bundles);
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// Then, resolve all extension implementations.
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return Promise.all(bundles.map(resolveBundle))
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.then(mergeResolvedBundles);
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}
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};
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}
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return BundleResolver;
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}
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); |