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annotate OrthancServer/Resources/Samples/Python/Replicate.py @ 5853:4d932683049d get-scu tip

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very first implementation of C-Get SCU
author Alain Mazy <am@orthanc.team>
date Tue, 29 Oct 2024 17:25:49 +0100
parents f7adfb22e20e
children
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1 #!/usr/bin/python
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2
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3 # Orthanc - A Lightweight, RESTful DICOM Store
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4 # Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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5 # Department, University Hospital of Liege, Belgium
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6 # Copyright (C) 2017-2023 Osimis S.A., Belgium
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7 # Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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8 # Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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9 #
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10 # This program is free software: you can redistribute it and/or
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11 # modify it under the terms of the GNU General Public License as
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12 # published by the Free Software Foundation, either version 3 of the
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13 # License, or (at your option) any later version.
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14 #
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15 # This program is distributed in the hope that it will be useful, but
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16 # WITHOUT ANY WARRANTY; without even the implied warranty of
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17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 # General Public License for more details.
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19 #
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20 # You should have received a copy of the GNU General Public License
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21 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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22
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23
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24 import base64
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25 import httplib2
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26 import json
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27 import re
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28 import sys
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29
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30 URL_REGEX = re.compile('(http|https)://((.+?):(.+?)@|)(.*)')
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31
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32
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33 if len(sys.argv) != 3:
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34 print("""
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35 Script to copy the content of one Orthanc server to another Orthanc
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36 server through their REST API.
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37
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38 Usage: %s [SourceURI] [TargetURI]
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39 For instance: %s http://orthanc:password@127.0.0.1:8042/ http://127.0.0.1:8043/
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40 """ % (sys.argv[0], sys.argv[0]))
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41 exit(-1)
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44
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45 def CreateHeaders(parsedUrl):
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46 headers = { }
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47 username = parsedUrl.group(3)
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48 password = parsedUrl.group(4)
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49
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50 if username != None and password != None:
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51 # This is a custom reimplementation of the
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52 # "Http.add_credentials()" method for Basic HTTP Access
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53 # Authentication (for some weird reason, this method does not
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54 # always work)
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55 # http://en.wikipedia.org/wiki/Basic_access_authentication
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56
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57 # The ".encode()" and ".decode()" below fix the following issue:
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58 # https://groups.google.com/g/orthanc-users/c/KZ_iYOet5IQ/m/AUQWiSiAAQAJ
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59 credentials = (username + ':' + password)
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60 credentials_base64 = base64.b64encode(credentials.encode("ascii")).decode("ascii")
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61 headers['authorization'] = 'Basic ' + credentials_base64
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62
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63 return headers
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64
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65
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66 def GetBaseUrl(parsedUrl):
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67 return '%s://%s' % (parsedUrl.group(1), parsedUrl.group(5))
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68
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69
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70 def DoGetString(url):
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71 global URL_REGEX
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72 parsedUrl = URL_REGEX.match(url)
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73 headers = CreateHeaders(parsedUrl)
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74
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75 h = httplib2.Http()
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76 resp, content = h.request(GetBaseUrl(parsedUrl), 'GET', headers = headers)
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77
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78 if resp.status == 200:
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79 return content
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80 else:
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81 raise Exception('Unable to contact Orthanc at: ' + url)
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82
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83
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84 def DoPostDicom(url, body):
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85 global URL_REGEX
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86 parsedUrl = URL_REGEX.match(url)
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87 headers = CreateHeaders(parsedUrl)
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88 headers['content-type'] = 'application/dicom'
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89
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90 h = httplib2.Http()
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91 resp, content = h.request(GetBaseUrl(parsedUrl), 'POST',
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92 body = body,
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93 headers = headers)
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94
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95 if resp.status != 200:
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96 raise Exception('Unable to contact Orthanc at: ' + url)
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97
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98
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99 def _DecodeJson(s):
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100 if (sys.version_info >= (3, 0)):
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101 return json.loads(s.decode())
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102 else:
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103 return json.loads(s)
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104
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105
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106 def DoGetJson(url):
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107 return _DecodeJson(DoGetString(url))
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108
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109
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110 SOURCE = sys.argv[1]
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111 TARGET = sys.argv[2]
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112
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113 for study in DoGetJson('%s/studies' % SOURCE):
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114 print('Sending study %s...' % study)
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115 for instance in DoGetJson('%s/studies/%s/instances' % (SOURCE, study)):
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116 dicom = DoGetString('%s/instances/%s/file' % (SOURCE, instance['ID']))
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117 DoPostDicom('%s/instances' % TARGET, dicom)