# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1430399860 -7200
# Node ID fa09aa513fd4950b2f6db1e89caf9a9cd551d18f
# Parent  724dc4e17d38e4fb8aa76bf3e649c3e44329dd61
script to copy one server to another

diff -r 724dc4e17d38 -r fa09aa513fd4 Resources/Samples/Python/Replicate.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Samples/Python/Replicate.py	Thu Apr 30 15:17:40 2015 +0200
@@ -0,0 +1,109 @@
+#!/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 base64
+import httplib2
+import json
+import re
+import sys
+
+URL_REGEX = re.compile('(http|https)://((.+?):(.+?)@|)(.*)')
+
+
+if len(sys.argv) != 3:
+    print("""
+Script to copy the content of one Orthanc server to another Orthanc
+server through their REST API.
+
+Usage: %s [SourceURI] [TargetURI]
+For instance: %s http://orthanc:password@localhost:8042/ http://localhost:8043/
+""" % (sys.argv[0], sys.argv[0]))
+    exit(-1)
+
+
+
+def CreateHeaders(parsedUrl):
+    headers = { }
+    username = parsedUrl.group(3)
+    password = parsedUrl.group(4)
+
+    if username != None and password != None:
+        # This is a custom reimplementation of the
+        # "Http.add_credentials()" method for Basic HTTP Access
+        # Authentication (for some weird reason, this method does not
+        # always work)
+        # http://en.wikipedia.org/wiki/Basic_access_authentication
+        headers['authorization'] = 'Basic ' + base64.b64encode(username + ':' + password)
+
+    return headers
+
+
+def GetBaseUrl(parsedUrl):
+    return '%s://%s' % (parsedUrl.group(1), parsedUrl.group(5))
+
+
+def DoGetString(url):
+    global URL_REGEX
+    parsedUrl = URL_REGEX.match(url)
+    headers = CreateHeaders(parsedUrl)
+
+    h = httplib2.Http()
+    resp, content = h.request(GetBaseUrl(parsedUrl), 'GET', headers = headers)
+
+    if resp.status == 200:
+        return content
+    else:
+        raise Exception('Unable to contact Orthanc at: ' + url)
+    
+
+def DoPostDicom(url, body):
+    global URL_REGEX
+    parsedUrl = URL_REGEX.match(url)
+    headers = CreateHeaders(parsedUrl)
+    headers['content-type'] = 'application/dicom'
+
+    h = httplib2.Http()
+    resp, content = h.request(GetBaseUrl(parsedUrl), 'POST',
+                              body = body,
+                              headers = headers)
+
+    if resp.status != 200:
+        raise Exception('Unable to contact Orthanc at: ' + url)
+    
+
+def _DecodeJson(s):
+    if (sys.version_info >= (3, 0)):
+        return json.loads(s.decode())
+    else:
+        return json.loads(s)
+
+
+def DoGetJson(url):
+    return _DecodeJson(DoGetString(url))
+
+
+SOURCE = sys.argv[1]
+TARGET = sys.argv[2]
+
+for study in DoGetJson('%s/studies' % SOURCE):
+    print('Sending study %s...' % study)
+    for instance in DoGetJson('%s/studies/%s/instances' % (SOURCE, study)):
+        dicom = DoGetString('%s/instances/%s/file' % (SOURCE, instance['ID']))
+        DoPostDicom('%s/instances' % TARGET, dicom)