132 lines
4.9 KiB
JavaScript
132 lines
4.9 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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define(
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[
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'./TelemetryTableController'
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],
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function (TableController) {
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var BATCH_SIZE = 1000;
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/**
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* Extends TelemetryTableController and adds real-time streaming
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* support.
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* @memberof platform/features/table
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* @param $scope
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* @param telemetryHandler
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* @param telemetryFormatter
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* @constructor
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*/
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function HistoricalTableController($scope, telemetryHandler, telemetryFormatter, $timeout) {
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var self = this;
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this.$timeout = $timeout;
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this.timeouts = [];
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this.batchSize = BATCH_SIZE;
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$scope.$on("$destroy", function () {
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self.cancelAllTimeouts();
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});
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TableController.call(this, $scope, telemetryHandler, telemetryFormatter);
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}
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HistoricalTableController.prototype = Object.create(TableController.prototype);
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/**
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* Cancels outstanding processing
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* @private
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*/
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HistoricalTableController.prototype.cancelAllTimeouts = function() {
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this.timeouts.forEach(function (timeout) {
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clearTimeout(timeout);
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});
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this.timeouts = [];
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};
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/**
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* Will yield execution of a long running process, allowing
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* execution of UI and other activities
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* @private
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* @param callback the function to execute after yielding
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* @returns {number}
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*/
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HistoricalTableController.prototype.yield = function(callback) {
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return setTimeout(callback, 0);
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};
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/**
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* Populates historical data on scope when it becomes available from
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* the telemetry API
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*/
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HistoricalTableController.prototype.addHistoricalData = function () {
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var rowData = [],
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self = this,
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telemetryObjects = this.handle.getTelemetryObjects();
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this.cancelAllTimeouts();
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function processTelemetryObject(offset) {
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var telemetryObject = telemetryObjects[offset],
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series = self.handle.getSeries(telemetryObject) || {},
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pointCount = series.getPointCount ? series.getPointCount() : 0;
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function processBatch(start, end, done) {
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var i;
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if (start < pointCount) {
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for (i = start; i < end; i++) {
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rowData.push(self.table.getRowValues(telemetryObject,
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self.handle.makeDatum(telemetryObject, series, i)));
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}
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self.timeouts.push(self.yield(function () {
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processBatch(end, end + self.batchSize, done);
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}));
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} else {
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offset++;
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if (offset < telemetryObjects.length) {
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processTelemetryObject(offset);
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} else {
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// Apply digest. Digest may not be necessary here, so
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// using $timeout instead of $scope.$apply to avoid
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// in progress error
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self.$timeout(function () {
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self.$scope.loading = false;
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self.$scope.rows = rowData;
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});
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}
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}
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}
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processBatch(0, self.batchSize);
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}
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if (telemetryObjects.length > 0) {
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this.$scope.loading = true;
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processTelemetryObject(0);
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}
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};
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return HistoricalTableController;
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}
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);
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