@cleerlycode/cornerstone-wado-image-loader

<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/imageLoader/wadouri/dataSetCacheManager.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../../prettify.css" /> <link rel="stylesheet" href="../../../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../../../index.html">all files</a> / <a href="index.html">src/imageLoader/wadouri/</a> dataSetCacheManager.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 65.85% Statements 27/41 </div> <div class='fl pad1y space-right2'> 36.36% Branches 4/11 </div> <div class='fl pad1y space-right2'> 72.73% Functions 8/11 </div> <div class='fl pad1y space-right2'> 65.85% Lines 27/41 </div> </div> </div> <div class='status-line medium'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137</td><td class="line-coverage quiet">                  6×   6× 6×       10×       117× 63×     54×           19×     19×                 19×               19×     19× 19× 19×         19× 19×         19×       19× 19×   19×             19×             19×   19×   19×                                                 20×               1× 1×                      </td><td class="text"><pre class="prettyprint lang-js">import { dicomParser, external } from '../../externalModules.js'; import { xhrRequest } from '../internal/index.js';   /** * This object supports loading of DICOM P10 dataset from a uri and caching it so it can be accessed * by the caller. This allows a caller to access the datasets without having to go through cornerstone's * image loader mechanism. One reason a caller may need to do this is to determine the number of frames * in a multiframe sop instance so it can create the imageId's correctly. */ let cacheSizeInBytes = 0;   let loadedDataSets = {}; let promises = {};   // returns true if the wadouri for the specified index has been loaded function isLoaded (uri) { return loadedDataSets[uri] !== undefined; }   function get (uri) { if (!loadedDataSets[uri]) { return; }   return loadedDataSets[uri].dataSet; }     // loads the dicom dataset from the wadouri sp function load (uri, loadRequest = xhrRequest, imageId) { const cornerstone = external.cornerstone;   // if already loaded return it right away Iif (loadedDataSets[uri]) { // console.log('using loaded dataset ' + uri); return new Promise((resolve) => { loadedDataSets[uri].cacheCount++; resolve(loadedDataSets[uri].dataSet); }); }   // if we are currently loading this uri, increment the cacheCount and return its promise Iif (promises[uri]) { // console.log('returning existing load promise for ' + uri); promises[uri].cacheCount++;   return promises[uri]; }   // This uri is not loaded or being loaded, load it via an xhrRequest const loadDICOMPromise = loadRequest(uri, imageId);   // handle success and failure of the XHR request load const promise = new Promise((resolve, reject) => { loadDICOMPromise.then(function (dicomPart10AsArrayBuffer/* , xhr*/) { const byteArray = new Uint8Array(dicomPart10AsArrayBuffer);   // Reject the promise if parsing the dicom file fails let dataSet;   try { dataSet = dicomParser.parseDicom(byteArray); } catch (error) { return reject(error); }   loadedDataSets[uri] = { dataSet, cacheCount: promise.cacheCount }; cacheSizeInBytes += dataSet.byteArray.length; resolve(dataSet);   cornerstone.triggerEvent(cornerstone.events, 'datasetscachechanged', { uri, action: 'loaded', cacheInfo: getInfo() }); }, reject).then(() => { // Remove the promise if success delete promises[uri]; }, () => { // Remove the promise if failure delete promises[uri]; }); });   promise.cacheCount = 1;   promises[uri] = promise;   return promise; }   // remove the cached/loaded dicom dataset for the specified wadouri to free up memory function unload (uri) { const cornerstone = external.cornerstone;   // console.log('unload for ' + uri); if (loadedDataSets[uri]) { loadedDataSets[uri].cacheCount--; if (loadedDataSets[uri].cacheCount === 0) { // console.log('removing loaded dataset for ' + uri); cacheSizeInBytes -= loadedDataSets[uri].dataSet.byteArray.length; delete loadedDataSets[uri];   cornerstone.triggerEvent(cornerstone.events, 'datasetscachechanged', { uri, action: 'unloaded', cacheInfo: getInfo() }); } } }   export function getInfo () { return { cacheSizeInBytes, numberOfDataSetsCached: Object.keys(loadedDataSets).length }; }   // removes all cached datasets from memory function purge () { loadedDataSets = {}; promises = {}; }   export default { isLoaded, load, unload, getInfo, purge, get };  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Sun Apr 01 2018 20:02:13 GMT+0800 (CST) </div> </div> <script src="../../../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../../../sorter.js"></script> </body> </html>