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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 18 Oct 2024 15:44:18 +0200 |
parents | 0683312e21ba |
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LRU caching of pyramids, OrthancWSIClearCache script
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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 Affero General Public License |
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12 # as published by the Free Software Foundation, either version 3 of |
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13 # the 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 # Affero 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 Affero 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 os |
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28 import sys |
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29 |
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30 if len(sys.argv) != 3 and len(sys.argv) != 5: |
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31 print(""" |
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32 Script to reinitialize the cache of the whole-slide imaging plugin for |
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33 Orthanc. Please make sure that Orthanc is running before starting this |
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34 script. |
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35 |
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36 Usage: %s [hostname] [HTTP port] |
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37 Usage: %s [hostname] [HTTP port] [username] [password] |
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38 For instance: %s 127.0.0.1 8042 |
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39 """ % (sys.argv[0], sys.argv[0], sys.argv[0])) |
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40 exit(-1) |
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41 |
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42 |
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43 METADATA=4200 |
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44 |
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45 |
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46 def RunHttpRequest(uri, method, body = None): |
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47 http = httplib2.Http() |
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48 headers = { } |
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49 |
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50 if len(sys.argv) == 5: |
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51 username = sys.argv[4] |
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52 password = sys.argv[5] |
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53 |
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54 # h.add_credentials(username, password) |
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55 |
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56 # This is a custom reimplementation of the |
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57 # "Http.add_credentials()" method for Basic HTTP Access |
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58 # Authentication (for some weird reason, this method does not |
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59 # always work) |
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60 # http://en.wikipedia.org/wiki/Basic_access_authentication |
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61 headers['authorization'] = 'Basic ' + base64.b64encode(username + ':' + password) |
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62 |
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63 url = 'http://%s:%d/%s' % (sys.argv[1], int(sys.argv[2]), uri) |
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64 resp, content = http.request(url, method, |
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65 body = body, |
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66 headers = headers) |
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67 |
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68 if resp.status != 200: |
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69 raise Exception('Cannot %s on URL %s, HTTP status %d ' |
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70 '(Is Orthanc running? Is there a password?)' % |
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71 (method, url, resp.status)) |
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72 else: |
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73 return content.decode('utf8') |
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74 |
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75 |
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76 for instance in json.loads(RunHttpRequest('/instances', 'GET')): |
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77 print('Clearing cache for instance %s' % instance) |
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78 RunHttpRequest('/instances/%s/metadata/%s' % (instance, METADATA), 'DELETE') |
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79 |
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80 print('The WSI cache was successfully cleared') |