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annotate Resources/Samples/Python/ChangesLoop.py @ 445:7816aaa5db17

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 17 May 2013 17:32:16 +0200
parents b51c67f28b33
children 44382c8bcd15
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1 #!/usr/bin/python
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2
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3 import time
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4 import sys
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5 import RestToolbox
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6
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7
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8 ##
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9 ## Print help message
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10 ##
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12 if len(sys.argv) != 3:
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13 print("""
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14 Sample script that continuously monitors the arrival of new DICOM
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15 images into Orthanc (through the Changes API).
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16
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17 Usage: %s [hostname] [HTTP port]
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18 For instance: %s localhost 8042
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19 """ % (sys.argv[0], sys.argv[0]))
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20 exit(-1)
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21
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22 URL = 'http://%s:%d' % (sys.argv[1], int(sys.argv[2]))
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26 ##
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27 ## The following function is called each time a new instance is
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28 ## received.
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29 ##
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31 def NewInstanceReceived(path):
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32 global URL
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33 patientName = RestToolbox.DoGet(URL + path + '/content/PatientName')
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34
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35 # Remove the possible trailing characters due to DICOM padding
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36 patientName = patientName.strip()
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37
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38 print 'New instance received for patient "%s": "%s"' % (patientName, path)
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42 ##
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43 ## Main loop that listens to the changes API.
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44 ##
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45
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46 current = 0
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47 while True:
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48 r = RestToolbox.DoGet(URL + '/changes', {
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49 'since' : current,
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50 'limit' : 4 # Retrieve at most 4 changes at once
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51 })
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53 for change in r['Changes']:
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54 # We are only interested interested in the arrival of new instances
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55 if change['ChangeType'] == 'NewInstance':
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56 # Call the callback function
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57 path = change['Path']
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58 NewInstanceReceived(path)
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60 # Delete the instance once it has been discovered
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61 RestToolbox.DoDelete(URL + path)
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63 current = r['Last']
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65 if r['Done']:
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66 print "Everything has been processed: Waiting..."
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67 time.sleep(1)