# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1428060660 -7200
# Node ID 0ad4773f28b3d04e4885e4ecfcaa8a2f0901b6bd
# Parent  a87d3288bd3999cfabe9631e183cfeecc050be22
new Python sample

diff -r a87d3288bd39 -r 0ad4773f28b3 Resources/Samples/Python/ContinuousPatientAnonymization.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Samples/Python/ContinuousPatientAnonymization.py	Fri Apr 03 13:31:00 2015 +0200
@@ -0,0 +1,99 @@
+#!/usr/bin/python
+
+# Orthanc - A Lightweight, RESTful DICOM Store
+# Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
+# Department, University Hospital of Liege, Belgium
+#
+# This program is free software: you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+
+import time
+import sys
+import RestToolbox
+import md5
+
+
+##
+## Print help message
+##
+
+if len(sys.argv) != 3:
+    print("""
+Sample script that anonymizes patients in real-time. A patient gets
+anonymized as soon as she gets stable (i.e. when no DICOM instance has
+been received for this patient for a sufficient amount of time - cf.
+the configuration option "StableAge").
+
+Usage: %s [hostname] [HTTP port]
+For instance: %s localhost 8042
+""" % (sys.argv[0], sys.argv[0]))
+    exit(-1)
+
+URL = 'http://%s:%d' % (sys.argv[1], int(sys.argv[2]))
+
+
+
+##
+## The following function is called whenever a patient gets stable
+##
+
+COUNT = 1
+
+def AnonymizePatient(path):
+    global URL
+    global COUNT
+
+    patient = RestToolbox.DoGet(URL + path)
+    patientID = patient['MainDicomTags']['PatientID']
+
+    # Ignore anonymized patients
+    if not 'AnonymizedFrom' in patient:
+        print('Patient with ID "%s" is stabilized: anonymizing it...' % (patientID))
+        
+        # The PatientID after anonymization is taken as the 8 first
+        # characters from the MD5 hash of the original PatientID
+        anonymizedID = md5.new(patientID).hexdigest()[:8]
+        anonymizedName = 'Anonymized patient %d' % COUNT
+        COUNT += 1
+
+        RestToolbox.DoPost(URL + path + '/anonymize',
+                           { 'Replace' : { 'PatientID' : anonymizedID,
+                                           'PatientName' : anonymizedName } })
+
+        # Delete the source patient after the anonymization
+        RestToolbox.DoDelete(URL + change['Path'])
+
+
+
+##
+## Main loop that listens to the changes API.
+## 
+
+current = 0
+while True:
+    r = RestToolbox.DoGet(URL + '/changes', {
+            'since' : current,
+            'limit' : 4   # Retrieve at most 4 changes at once
+            })
+
+    for change in r['Changes']:
+        if change['ChangeType'] == 'StablePatient':
+            AnonymizePatient(change['Path'])
+
+    current = r['Last']
+
+    if r['Done']:
+        print('Everything has been processed: Waiting...')
+        time.sleep(1)