orthanc proxy

Packages/orthanc-remote/server/lib.js

@@ -0,0 +1,115 @@
+
+OrthancRemote.prototype.findStudies = function(modality, params) {
+  return this.query(modality, 'Study', params);
+}
+
+OrthancRemote.prototype.findSeries = function(modality, studyId, params) {
+  params = Object.assign({StudyInstanceUID : studyId || ''}, params);
+
+  return this.query(modality, 'Series', params);
+}
+
+OrthancRemote.prototype.findInstances = function(modality, studyId, seriesId, params) {
+  params = Object.assign({StudyInstanceUID : studyId || '', SeriesInstanceUID : seriesId || ''}, params);
+
+  return this.query(modality, 'Instance', params);
+}
+
+OrthancRemote.prototype.query = function(modality, level, params) {
+  var url = this.root + '/modalities/' + modality + '/query',
+      postData = {Level : level, Query : params || {}};
+  
+  var result = HTTP.call('POST', url, {content : JSON.stringify(postData)});
+  return this.getAnswersFromQuery(result.data['ID']);
+}
+
+OrthancRemote.prototype.getAnswersFromQuery = function(id) {
+  var url = this.root + '/queries/' + id + '/answers',
+      result = HTTP.call('GET', url);
+
+  var resultCount = result.data.length, answers = [], i = 0;
+  while (i < resultCount) {
+    var contentUrl = this.root + '/queries/' + id + '/answers/' + result.data[i] + '/content';
+    //fetch the result
+    var contentResult = HTTP.call('GET', contentUrl);
+    answers.push(contentResult.data); 
+    i++;
+  }
+  return {
+    query : id,
+    length : resultCount,
+    results : answers
+  };
+}
+
+OrthancRemote.prototype.retrieveAnswer = function(query, index) {
+  var retrieveUrl = this.root + '/queries/' + query + '/answers/' + index + '/retrieve';
+
+  var result = HTTP.call('POST', retrieveUrl, {content : this.localAE});
+
+  return result.data;
+}
+
+OrthancRemote.prototype.retrieveStudy = function(modality, studyInstanceUID) {
+  var id = this.findStudyID(studyInstanceUID);
+  if (id === null) {
+    //retrieve the study
+    console.log('RetrieveStudy', studyInstanceUID);
+    var result = this.findStudies(modality, {"StudyInstanceUID" : studyInstanceUID});
+    if (result.results.length < 1) {
+      throw new Meteor.Error(404, "No such study");
+    }
+
+    this.retrieveAnswer(result.query, 0);
+    //check again
+    id = this.findStudyID(studyInstanceUID);
+    if (id === null) {
+      throw new Meteor.Error(500, "Failed to retrieve remote study");
+    }
+  }
+  return id;
+}
+
+OrthancRemote.prototype.retrieveMetadata = function(modality, studyInstanceUID) {
+  var studyId = this.retrieveStudy(modality, studyInstanceUID),
+      instances = this.getInstancesByStudy(studyId);
+
+  var results = [], length = instances.length;
+  for (var i = 0;i < length;i++) {
+    var instanceId = instances[i].ID, metadata = this.getInstanceMetadata(instanceId);
+    metadata['xxxx,0001'] = {Value : instanceId};
+    
+    results.push(metadata);
+  }
+
+  return results;
+}
+
+OrthancRemote.prototype.getInstancesByStudy = function(studyId) {
+  var url = this.root + '/studies/' + studyId + '/instances';
+
+  var result = this._getCall(url);
+  return result;
+}
+
+OrthancRemote.prototype.getInstanceMetadata = function(instanceId) {
+  var url = this.root + '/instances/' + instanceId + '/tags';
+
+  return this._getCall(url);
+}
+
+OrthancRemote.prototype.findStudyID = function(uid) {
+  var url = this.root + '/tools/lookup';
+
+  var result = HTTP.call('POST', url, {content : uid}), len = result.data.length;
+  for (var i = 0;i < len;i++) {
+    if (result.data[i].Type == 'Study') {
+      return result.data[i].ID;
+    }
+  }
+  return null;
+}
+
+OrthancRemote.prototype._getCall = function(url) {
+  return HTTP.call('GET', url).data;
+}