92 lines
3.5 KiB
JavaScript
92 lines
3.5 KiB
JavaScript
import { Meteor } from 'meteor/meteor';
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import { OHIF } from 'meteor/ohif:core';
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import 'meteor/ohif:viewerbase';
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// Define the StudyMetaDataPromises object. This is used as a cache to store study meta data
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// promises and prevent unnecessary subsequent calls to the server
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const StudyMetaDataPromises = new Map();
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/**
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* Retrieves study metadata using a server call
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*
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* @param {String} studyInstanceUid The UID of the Study to be retrieved
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* @returns {Promise} that will be resolved with the metadata or rejected with the error
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*/
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OHIF.studylist.retrieveStudyMetadata = studyInstanceUid => {
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// @TODO: Whenever a study metadata request has failed, its related promise will be rejected once and for all
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// and further requests for that metadata will always fail. On failure, we probably need to remove the
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// corresponding promise from the "StudyMetaDataPromises" map...
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// If the StudyMetaDataPromises cache already has a pending or resolved promise related to the
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// given studyInstanceUid, then that promise is returned
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if (StudyMetaDataPromises.has(studyInstanceUid)) {
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return StudyMetaDataPromises.get(studyInstanceUid);
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}
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console.time('retrieveStudyMetadata');
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// Create a promise to handle the data retrieval
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const promise = new Promise((resolve, reject) => {
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// If no study metadata is in the cache variable, we need to retrieve it from
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// the server with a call.
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Meteor.call('GetStudyMetadata', studyInstanceUid, function(error, study) {
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console.timeEnd('retrieveStudyMetadata');
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if (Meteor.user && Meteor.user()) {
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HipaaLogger.logEvent({
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eventType: 'viewed',
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userId: Meteor.userId(),
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userName: Meteor.user().profile.fullName,
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collectionName: 'Study',
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recordId: studyInstanceUid,
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patientId: study.patientId,
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patientName: study.patientName
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});
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}
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if (error) {
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OHIF.log.warn(error);
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reject(error);
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return;
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}
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if (!study) {
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throw new Meteor.Error('GetStudyMetadata', 'No study data returned from server');
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}
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// Once the data was retrieved, the series are sorted by series and instance number
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OHIF.viewerbase.sortStudy(study);
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// Updates WADO-RS metaDataManager
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OHIF.viewerbase.updateMetaDataManager(study);
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// Add additional metadata to our study from the studylist
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const studylistStudy = OHIF.studylist.collections.Studies.findOne({
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studyInstanceUid: study.studyInstanceUid
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});
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if (studylistStudy) {
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Object.assign(study, studylistStudy);
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}
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// Transform the study in a StudyMetadata object
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const studyMetadata = new OHIF.metadata.StudyMetadata(study);
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// Add the display sets to the study
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study.displaySets = OHIF.viewerbase.sortingManager.getDisplaySets(studyMetadata);
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study.displaySets.forEach(displaySet => {
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OHIF.viewerbase.stackManager.makeAndAddStack(study, displaySet);
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});
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// Resolve the promise with the final study metadata object
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resolve(study);
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});
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});
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// Store the promise in cache
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StudyMetaDataPromises.set(studyInstanceUid, promise);
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return promise;
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};
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