c6ca912f2b
* fixed issues for eslint one-var and no-var rules Co-authored-by: Joshi <simplyrender@gmail.com> Co-authored-by: Andrew Henry <akhenry@gmail.com>
98 lines
3.4 KiB
JavaScript
98 lines
3.4 KiB
JavaScript
/*****************************************************************************
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* Open MCT, Copyright (c) 2014-2018, 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 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 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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define([
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'objectUtils'
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], function (
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objectUtils
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) {
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/**
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* Compatibility decorator for New API.
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*
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* When the model service returns no results, this attempts to load
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* the model from the new Object API and returns that instead. In order
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* to prevent infinite recursion, this only tries to fetch from the API
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* a single time.
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*
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*/
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function MissingModelCompatibilityDecorator(api, modelService) {
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this.api = api;
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this.modelService = modelService;
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this.apiFetching = {}; // to prevent loops, if we have already
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}
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/**
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* Fetch a set of ids from the public api and return a promise for their
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* models. If a model is requested twice, respond with a missing result.
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*/
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MissingModelCompatibilityDecorator.prototype.apiFetch = function (ids) {
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const results = {};
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const promises = ids.map(function (id) {
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if (this.apiFetching[id]) {
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return Promise.resolve();
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}
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this.apiFetching[id] = true;
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return this.api.objects.get(objectUtils.parseKeyString(id))
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.then(function (newDO) {
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results[id] = objectUtils.toOldFormat(newDO);
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});
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}, this);
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return Promise.all(promises).then(function () {
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return results;
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});
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};
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/**
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* Return a promise for model results based on provided ids. Will attempt
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* to fetch any missing results from the object api.
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*/
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MissingModelCompatibilityDecorator.prototype.getModels = function (ids) {
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return this.modelService.getModels(ids)
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.then(function (models) {
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const missingIds = ids.filter(function (id) {
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return !models[id];
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});
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if (!missingIds.length) {
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return models;
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}
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return this.apiFetch(missingIds)
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.then(function (apiResults) {
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Object.keys(apiResults).forEach(function (k) {
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models[k] = apiResults[k];
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});
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return models;
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});
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}.bind(this));
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};
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return MissingModelCompatibilityDecorator;
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});
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