Mercurial > hg > orthanc

annotate Resources/Samples/WebApplications/NodeToolbox.js @ 3944:aae045f802f4 transcoding

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preparing simplified interface for IDicomTranscoder
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 19 May 2020 10:17:06 +0200
parents 94f4a18a79cc
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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21
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22 var fs = require('fs');
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23 var http = require('http');
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25
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26 function ForwardGetRequest(orthanc, path, res) {
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27 var opts = orthanc;
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28 opts.path = path;
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29 opts.method = 'GET';
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31 http.get(opts, function(response) {
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32 if (response.statusCode == 200) {
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33 response.setEncoding('utf-8');
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34 response.on('data', function(chunk) {
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35 res.write(chunk);
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36 });
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37 response.on('end', function() {
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38 res.end();
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39 });
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40 } else {
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41 console.log('Got error on GET forwarding: ' +
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42 response.statusCode + ' (' + path + ')');
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43 res.writeHead(response.statusCode);
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44 res.end();
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45 }
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46 }).on('error', function(e) {
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47 console.log('Unable to contact Orthanc: ' + e.message);
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48 res.writeHead(503); // Service Unavailable
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49 res.end();
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50 });
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51 }
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54 function ForwardPostRequest(orthanc, path, body, res) {
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55 var opts = orthanc;
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56 opts.path = path;
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57 opts.method = 'POST';
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58 opts.headers = {
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59 'Content-Length': body.length
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60 }
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61
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62 var req = http.request(opts, function(response) {
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63 if (response.statusCode == 200) {
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64 response.setEncoding('utf-8');
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65 response.on('data', function(chunk) {
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66 res.write(chunk);
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67 });
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68 response.on('end', function() {
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69 res.end();
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70 });
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71 } else {
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72 console.log('Got error on POST forwarding: ' +
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73 response.statusCode + ' (' + path + ')');
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74 res.writeHead(response.statusCode);
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75 res.end();
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76 }
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77 }).on('error', function(e) {
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78 console.log('Unable to contact Orthanc: ' + e.message);
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79 res.writeHead(503); // Service Unavailable
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80 res.end();
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81 });
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82
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83 req.write(body);
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84 req.end();
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85 }
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86
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87
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88 function ServeFile(filename, res) {
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89 fs.readFile(filename, function(r, c) {
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90 res.end(c.toString());
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91 });
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92 }
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93
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94
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95 function NotFound(res) {
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96 res.writeHead(404, {'Content-Type': 'text/plain'});
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97 res.end();
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98 }
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99
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100
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101 function Redirect(path, res) {
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102 res.writeHead(301, {
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103 'Content-Type': 'text/plain',
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104 'Location': path
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105 });
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106 res.end();
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107 }
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108
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109
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110 String.prototype.startsWith = function(prefix) {
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111 return this.indexOf(prefix) === 0;
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112 }
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113
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114
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115 module.exports.ForwardGetRequest = ForwardGetRequest;
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116 module.exports.ForwardPostRequest = ForwardPostRequest;
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117 module.exports.NotFound = NotFound;
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118 module.exports.Redirect = Redirect;
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119 module.exports.ServeFile = ServeFile;