Mercurial > hg > orthanc
annotate Resources/Samples/Python/HighPerformanceAutoRouting.py @ 3349:ef18ea68a362
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| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Thu, 18 Apr 2019 15:52:56 +0200 |
| parents | ca65e3dcce72 |
| children | 94f4a18a79cc |
| rev | line source |
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| 404 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
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4 # Orthanc - A Lightweight, RESTful DICOM Store |
| 1900 | 5 # Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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6 # Department, University Hospital of Liege, Belgium |
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7 # Copyright (C) 2017-2019 Osimis S.A., Belgium |
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8 # |
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9 # This program is free software: you can redistribute it and/or |
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10 # modify it under the terms of the GNU General Public License as |
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11 # published by the Free Software Foundation, either version 3 of the |
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12 # License, or (at your option) any later version. |
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13 # |
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14 # This program is distributed in the hope that it will be useful, but |
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15 # WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 # General Public License for more details. |
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18 # |
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19 # You should have received a copy of the GNU General Public License |
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20 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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21 |
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22 |
| 404 | 23 |
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24 URL = 'http://127.0.0.1:8042' |
| 404 | 25 TARGET = 'sample' |
| 26 | |
| 27 | |
| 28 # | |
| 29 # This sample code shows how to setup a simple, high-performance DICOM | |
| 30 # auto-routing. All the DICOM instances that arrive inside Orthanc | |
| 31 # will be sent to a remote modality. A producer-consumer pattern is | |
| 32 # used. The target modality is specified by the TARGET variable above: | |
| 33 # It must match an entry in the Orthanc configuration file inside the | |
| 34 # "DicomModalities" section. | |
| 35 # | |
| 36 # NOTE: This sample only works with Orthanc >= 0.5.2. Make sure that | |
| 37 # Orthanc was built with "-DCMAKE_BUILD_TYPE=Release" to get the best | |
| 38 # performance. | |
| 39 # | |
| 40 | |
| 41 import Queue | |
| 42 import sys | |
| 43 import time | |
| 44 import threading | |
| 45 | |
| 46 import RestToolbox | |
| 47 | |
| 48 | |
| 49 # | |
| 50 # Queue that is shared between the producer and the consumer | |
| 51 # threads. It holds the instances that are still to be sent. | |
| 52 # | |
| 53 | |
| 54 queue = Queue.Queue() | |
| 55 | |
| 56 | |
| 57 # | |
| 58 # The producer thread. It monitors the arrival of new instances into | |
| 59 # Orthanc, and pushes their ID into the shared queue. This code is | |
| 60 # based upon the "ChangesLoop.py" sample code. | |
| 61 # | |
| 62 | |
| 63 def Producer(queue): | |
| 64 current = 0 | |
| 65 | |
| 66 while True: | |
| 67 r = RestToolbox.DoGet(URL + '/changes', { | |
| 68 'since' : current, | |
| 69 'limit' : 4 # Retrieve at most 4 changes at once | |
| 70 }) | |
| 71 | |
| 72 for change in r['Changes']: | |
| 3340 | 73 # We are only interested in the arrival of new instances |
| 404 | 74 if change['ChangeType'] == 'NewInstance': |
| 75 queue.put(change['ID']) | |
| 76 | |
| 77 current = r['Last'] | |
| 78 | |
| 79 if r['Done']: | |
| 80 time.sleep(1) | |
| 81 | |
| 82 | |
| 83 # | |
| 84 # The consumer thread. It continuously reads the instances from the | |
| 85 # queue, and send them to the remote modality. Each time a packet of | |
| 86 # instances is sent, a single DICOM connexion is used, hence improving | |
| 87 # the performance. | |
| 88 # | |
| 89 | |
| 90 def Consumer(queue): | |
| 91 TIMEOUT = 0.1 | |
| 92 | |
| 93 while True: | |
| 94 instances = [] | |
| 95 | |
| 96 while True: | |
| 97 try: | |
| 98 # Block for a while, waiting for the arrival of a new | |
| 99 # instance | |
| 100 instance = queue.get(True, TIMEOUT) | |
| 101 | |
| 102 # A new instance has arrived: Record its ID | |
| 103 instances.append(instance) | |
| 104 queue.task_done() | |
| 105 | |
| 106 except Queue.Empty: | |
| 107 # Timeout: No more data was received | |
| 108 break | |
| 109 | |
| 110 if len(instances) > 0: | |
| 1184 | 111 print('Sending a packet of %d instances' % len(instances)) |
| 404 | 112 start = time.time() |
| 113 | |
| 114 # Send all the instances with a single DICOM connexion | |
| 115 RestToolbox.DoPost('%s/modalities/sample/store' % URL, instances) | |
| 116 | |
| 117 # Remove all the instances from Orthanc | |
| 118 for instance in instances: | |
| 119 RestToolbox.DoDelete('%s/instances/%s' % (URL, instance)) | |
| 120 | |
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121 # Clear the log of the exported instances (to prevent the |
| 1143 | 122 # SQLite database from growing indefinitely). More simply, |
| 123 # you could also set the "LogExportedResources" option to | |
| 1144 | 124 # "false" in the configuration file since Orthanc 0.8.3. |
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125 RestToolbox.DoDelete('%s/exports' % URL) |
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126 |
| 404 | 127 end = time.time() |
| 1184 | 128 print('The packet of %d instances has been sent in %d seconds' % (len(instances), end - start)) |
| 404 | 129 |
| 130 | |
| 131 # | |
| 132 # Thread to display the progress | |
| 133 # | |
| 134 | |
| 135 def PrintProgress(queue): | |
| 136 while True: | |
| 1184 | 137 print('Current queue size: %d' % (queue.qsize())) |
| 404 | 138 time.sleep(1) |
| 139 | |
| 140 | |
| 141 # | |
| 142 # Start the various threads | |
| 143 # | |
| 144 | |
| 145 progress = threading.Thread(None, PrintProgress, None, (queue, )) | |
| 146 progress.daemon = True | |
| 147 progress.start() | |
| 148 | |
| 149 producer = threading.Thread(None, Producer, None, (queue, )) | |
| 150 producer.daemon = True | |
| 151 producer.start() | |
| 152 | |
| 153 consumer = threading.Thread(None, Consumer, None, (queue, )) | |
| 154 consumer.daemon = True | |
| 155 consumer.start() | |
| 156 | |
| 157 | |
| 158 # | |
| 159 # Active waiting for Ctrl-C | |
| 160 # | |
| 161 | |
| 162 while True: | |
| 163 time.sleep(0.1) |