Mercurial > hg > orthanc-book
annotate Sphinx/source/users/lua.rst @ 451:938206110483
added object storage
author | Alain Mazy <alain@mazy.be> |
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date | Fri, 03 Jul 2020 12:52:11 +0200 |
parents | 2922fb1bd65e |
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rev | line source |
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0 | 1 .. _lua: |
2 | |
3 Server-side scripting with Lua | |
4 ============================== | |
5 | |
6 .. contents:: | |
7 | |
8 Since release 0.5.2, Orthanc supports server-side scripting through | |
25 | 9 the `Lua <https://en.wikipedia.org/wiki/Lua_(programming_language)>`__ |
0 | 10 scripting language. Thanks to this major feature, Orthanc can be tuned |
11 to specific medical workflows without being driven by an external | |
12 script. This page summarizes the possibilities of Orthanc server-side | |
13 scripting. | |
14 | |
15 Many other examples are `available in the source distribution | |
449 | 16 <https://hg.orthanc-server.com/orthanc/file/default/OrthancServer/Resources/Samples/Lua/>`__. |
0 | 17 |
18 | |
75 | 19 Installing a Lua script |
0 | 20 ----------------------- |
21 | |
22 .. highlight:: bash | |
23 | |
24 A custom Lua script can be installed either by the :ref:`configuration | |
25 file <configuration>`, or by uploading it | |
26 through the :ref:`REST API <rest-samples>`. | |
27 | |
28 To install it by the **configuration file** method, you just have to | |
29 specify the path to the file containing the Lua script in the | |
357 | 30 ``LuaScripts`` variable. A comma-separated list of paths can be |
31 specified to install multiple scripts. | |
0 | 32 |
33 To upload a script stored in the file "``script.lua``" through the | |
34 **REST API**, use the following command:: | |
35 | |
36 $ curl -X POST http://localhost:8042/tools/execute-script --data-binary @script.lua | |
37 | |
38 Pay attention to the fact that, contrarily to the scripts installed | |
39 from the configuration file, the scripts installed through the REST | |
40 API are non-persistent: They are discarded after a restart of Orthanc, | |
41 which makes them useful for script prototyping. You can also interpret | |
42 a single Lua command through the REST API:: | |
43 | |
44 $ curl -X POST http://localhost:8042/tools/execute-script --data-binary "print(42)" | |
45 | |
46 *Note:* The ``--data-binary`` cURL option is used instead of | |
47 ``--data`` to prevent the interpretation of newlines by cURL, which is | |
48 `mandatory for the proper evaluation | |
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49 <https://stackoverflow.com/questions/3872427/how-to-send-line-break-with-curl>`__ |
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50 of the possible comments inside the Lua script. |
0 | 51 |
52 Lua API | |
53 ------- | |
54 | |
55 | |
56 .. _lua-callbacks: | |
57 | |
58 Callbacks to react to events | |
59 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
60 | |
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61 The Lua engine of Orthanc invokes the following callbacks that |
0 | 62 are triggered on various events. Here are the **generic events**: |
63 | |
64 * ``function Initialize()``: Invoked as soon as the Orthanc server is started. | |
65 * ``function Finalize()``: Invoked just before the Orthanc server is stopped. | |
66 | |
67 Some **permission-related events** allow to filter incoming requests: | |
68 | |
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69 * ``function ReceivedInstanceFilter(dicom, origin, info)``: Invoked to |
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70 known whether an incoming DICOM instance should be |
0 | 71 accepted. :ref:`See this section <lua-filter-dicom>`. The ``origin`` |
387
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72 parameter is :ref:`documented separately <lua-origin>`. The ``info`` |
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73 parameter contains additional information and was added in Orthanc |
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74 1.6.1. |
0 | 75 * ``function IncomingHttpRequestFilter(method, uri, ip, username, |
76 httpHeaders)``: Invoked to known whether a REST request should be | |
77 accepted. :ref:`See this section <lua-filter-rest>`. | |
78 | |
232 | 79 Some **job-related events** allow to react to :ref:`job <jobs>` completion/failure: |
80 | |
81 * ``function OnJobSubmitted(jobId)``: | |
82 Invoked when a new job has been submitted. Note that this does not | |
83 mean the the job execution has started. | |
84 * ``function OnJobFailure(jobId)``: | |
85 Invoked when a job has failed. | |
86 * ``function OnJobSuccess(jobId)``: | |
87 Invoked when a job has completed successfully. | |
88 | |
0 | 89 Some **DICOM-related events** allow to react to the reception of |
90 new medical images: | |
91 | |
92 * ``function OnStoredInstance(instanceId, tags, metadata, origin)``: | |
93 Invoked whenever a new instance has been stored into Orthanc. | |
94 This is especially useful for :ref:`lua-auto-routing`. The ``origin`` | |
95 parameter is :ref:`documented separately <lua-origin>`. | |
96 * ``function OnStablePatient(patientId, tags, metadata)``: Invoked | |
97 whenever a patient has not received any new instance for a certain | |
98 amount of time (cf. the option ``StableAge`` in the | |
99 :ref:`configuration file <configuration>`). The :ref:`identifier | |
100 <orthanc-ids>` of the patient is provided, together with her DICOM | |
78 | 101 tags and her :ref:`metadata <metadata>`. |
0 | 102 * ``function OnStableSeries(seriesId, tags, metadata)``: Invoked |
103 whenever a series has not received any new instance for a certain | |
104 amount of time. | |
105 * ``function OnStableStudy(studyId, tags, metadata)``: Invoked | |
106 whenever a study has not received any new instance for a certain | |
107 amount of time. | |
108 * ``function IncomingFindRequestFilter(source, origin)``: Invoked | |
109 whenever Orthanc receives an incoming C-Find query through the DICOM | |
110 protocol. This allows to inspect the content of the C-Find query, | |
111 and possibly modify it if a patch is needed for some manufacturer. A | |
112 `sample script is available | |
449 | 113 <https://hg.orthanc-server.com/orthanc/file/default/OrthancServer/Resources/Samples/Lua/IncomingFindRequestFilter.lua>`__. |
0 | 114 |
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115 Some other **resource-related events** are available: |
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116 |
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117 * ``function OnDeletedPatient(patientId)``: Invoked when a patient has |
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118 been removed from the Orthanc database (new in Orthanc 1.6.0). |
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119 * ``function OnDeletedStudy(studyId)``: Invoked when a study has been |
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120 removed from the Orthanc database (new in Orthanc 1.6.0). |
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121 * ``function OnDeletedSeries(seriesId)``: Invoked when a series has |
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122 been removed from the Orthanc database (new in Orthanc 1.6.0). |
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123 * ``function OnDeletedInstance(instanceId)``: Invoked when a instance |
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124 has been removed from the Orthanc database (new in Orthanc 1.6.0). |
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125 * ``function OnUpdatedPatient(patientId)``: Invoked when some metadata |
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126 or some attachment associated with the given patient has been |
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127 updated (new in Orthanc 1.6.0). |
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128 * ``function OnUpdatedStudy(studyId)``: Invoked when some metadata or |
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129 some attachment associated with the given study has been updated |
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130 (new in Orthanc 1.6.0). |
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131 * ``function OnUpdatedSeries(seriesId)``: Invoked when some metadata |
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132 or some attachment associated with the given series has been updated |
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133 (new in Orthanc 1.6.0). |
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134 * ``function OnUpdatedInstance(instanceId)``: Invoked when some |
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135 metadata or some attachment associated with the given instance has |
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136 been updated (new in Orthanc 1.6.0). |
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137 |
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138 Furthermore, whenever a DICOM association is negotiated for C-Store |
0 | 139 SCP, several callbacks are successively invoked to specify which |
140 **transfer syntaxes** are accepted for the association. These | |
141 callbacks are listed in `this sample script | |
449 | 142 <https://hg.orthanc-server.com/orthanc/file/default/OrthancServer/Resources/Samples/Lua/TransferSyntaxEnable.lua>`__. |
0 | 143 |
144 *Note:* All of these callbacks are guaranteed to be **invoked in | |
145 mutual exclusion**. This implies that Lua scripting in Orthanc does | |
357 | 146 not support any kind of concurrency. |
147 | |
148 If a callback is specified multiple times in separate scripts, the | |
149 event handler of the latest loaded script is used. | |
0 | 150 |
151 | |
152 .. _lua-rest: | |
153 | |
154 Calling the REST API of Orthanc | |
155 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
156 | |
157 Lua scripts have :ref:`full access to the REST API <rest>` of Orthanc | |
158 through the following functions: | |
159 | |
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160 * ``RestApiGet(uri, builtin, headers)`` |
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161 * ``RestApiPost(uri, body, builtin, headers)`` |
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162 * ``RestApiPut(uri, body, builtin, headers)`` |
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163 * ``RestApiDelete(uri, builtin, headers)`` |
0 | 164 |
237 | 165 Here is a description of the parameters: |
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166 |
237 | 167 * ``uri`` specifies the resource being accessed |
168 (e.g. ``/instances``). It must not include the URL schema | |
169 (protocol), hostname or port. | |
0 | 170 |
237 | 171 * In the context of a POST or PUT request, ``body`` is a string |
172 containing the body of the request | |
173 (e.g. ``{"Keep":"StudyDate"}``). This string will often correspond | |
174 to a JSON-formatted version of a `Lua table | |
175 <http://lua-users.org/wiki/TablesTutorial>`__. The ``DumpJson()`` | |
176 function (see below) is very useful to achieve this conversion from | |
177 a Lua table to a plain string. | |
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178 |
237 | 179 * ``builtin`` is an optional Boolean that specifies whether the |
180 request targets only the built-in REST API of Orthanc (if set to | |
181 ``true``), or the full the REST API after being tainted by plugins | |
182 (if set to ``false``). | |
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183 |
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184 * ``headers`` is an optional argument and was added in release |
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185 1.5.7. It allows to provide the REST API endpoint with HTTP headers. |
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186 |
237 | 187 .. highlight:: bash |
188 | |
189 For instance:: | |
190 | |
191 RestApiPost('/instances/5af318ac-78fb-47ff-b0b0-0df18b0588e0/anonymize', '{}') | |
192 | |
0 | 193 |
194 General-purpose functions | |
195 ^^^^^^^^^^^^^^^^^^^^^^^^^ | |
196 | |
197 The Lua engine of Orthanc contain several general-purpose ancillary | |
198 functions: | |
199 | |
200 * ``PrintRecursive(v)`` recursively prints the content of a `Lua table | |
201 <http://www.lua.org/pil/2.5.html>`__ to the log file of Orthanc. | |
202 * ``ParseJson(s)`` converts a string encoded in the `JSON format | |
203 <https://en.wikipedia.org/wiki/JSON>`__ to a Lua table. | |
204 * ``DumpJson(v, keepStrings)`` encodes a Lua table as a JSON string. | |
205 Setting the optional argument ``keepStrings`` (available from | |
206 release 0.9.5) to ``true`` prevents the automatic conversion of | |
207 strings to integers. | |
208 * ``GetOrthancConfiguration()`` returns a Lua table containing the | |
209 content of the :ref:`configuration files <configuration>` of | |
210 Orthanc. | |
211 | |
212 | |
213 Similarly to the functions to :ref:`call the REST API of Orthanc | |
214 <lua-rest>`, several functions are available to make generic HTTP | |
215 requests to Web services: | |
216 | |
90 | 217 * ``HttpGet(url, headers)`` |
218 * ``HttpPost(url, body, headers)`` | |
219 * ``HttpPut(url, body, headers)`` | |
220 * ``HttpDelete(url, headers)`` | |
0 | 221 * ``SetHttpCredentials(username, password)`` can be used to setup the |
222 HTTP credentials. | |
223 | |
252
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224 The ``headers`` argument is optional and was added in release |
91 | 225 1.2.1. It allows to set the HTTP headers for the HTTP client request. |
0 | 226 |
283 | 227 Example:: |
228 | |
229 local preview = RestApiGet('/instances/' .. instanceId .. '/preview') | |
230 local headers = { | |
231 ["content-type"] = "image/png", | |
232 } | |
233 HttpPost("http://localhost/my-web-service/instance-preview", preview, headers) | |
234 | |
0 | 235 .. _lua-origin: |
236 | |
237 Origin of the instances | |
238 ^^^^^^^^^^^^^^^^^^^^^^^ | |
239 | |
240 Whenever Orthanc decides whether it should should store a new instance | |
241 (cf. the ``ReceivedInstanceFilter()`` callback), or whenever it has | |
242 actually stored a new instance (cf. the ``OnStoredInstance`` | |
243 callback), an ``origin`` parameter is provided. This parameter is a | |
244 `Lua table <http://www.lua.org/pil/2.5.html>`__ that describes from | |
245 which Orthanc subsystem the new instance comes from. | |
246 | |
247 There are 4 possible subsystems, that can be distinguished according | |
248 to the value of ``origin["RequestOrigin"]``: | |
249 | |
250 * ``RestApi``: The instance originates from some HTTP request to the REST | |
251 API. In this case, the ``RemoteIp`` and ``Username`` fields are | |
252 available in ``origin``. They respectively describe the IP address | |
253 of the HTTP client, and the username that was used for HTTP | |
254 authentication (as defined in the ``RegisteredUsers`` | |
255 :ref:`configuration variable <configuration>`). | |
256 * ``DicomProtocol``: The instance originates from a DICOM C-Store. | |
257 The fields ``RemoteIp``, ``RemoteAet`` and ``CalledAet`` | |
258 respectively provide the IP address of the DICOM SCU (client), the | |
259 application entity title of the DICOM SCU client, and the | |
260 application entity title of the Orthanc SCP server. The | |
261 ``CalledAet`` can be used for :ref:`advanced auto-routing scenarios | |
262 <lua-auto-routing>`, when a single instance of Orthanc acts as a | |
263 proxy for several DICOM SCU clients. | |
264 * ``Lua``: The instance originates from a Lua script. | |
265 * ``Plugins``: The instance originates from a plugin. | |
266 | |
267 | |
268 .. _lua-filter-dicom: | |
269 | |
75 | 270 Filtering incoming DICOM instances |
0 | 271 ---------------------------------- |
272 | |
273 .. highlight:: lua | |
274 | |
275 Each time a DICOM instance is received by Orthanc (either through the | |
276 DICOM protocol or through the REST API), the | |
277 ``ReceivedInstanceFilter()`` Lua function is invoked. If this callback | |
278 returns ``true``, the instance is accepted for storage. If it returns | |
279 ``false``, the instance is discarded. This mechanism can be used to | |
280 filter the incoming DICOM instances. Here is an example of a Lua | |
281 filter that only allows incoming instances of MR modality:: | |
282 | |
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283 function ReceivedInstanceFilter(dicom, origin, info) |
0 | 284 -- Only allow incoming MR images |
285 if dicom.Modality == 'MR' then | |
286 return true | |
287 else | |
288 return false | |
289 end | |
290 end | |
291 | |
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292 The argument ``dicom`` corresponds to a `Lua table |
0 | 293 <http://www.lua.org/pil/2.5.html>`__ (i.e. an associative array) that |
294 contains the DICOM tags of the incoming instance. For debugging | |
295 purpose, you can print this structure as follows:: | |
296 | |
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297 function ReceivedInstanceFilter(dicom, origin, info) |
0 | 298 PrintRecursive(dicom) |
299 -- Accept all incoming instances (default behavior) | |
300 return true | |
301 end | |
302 | |
303 The argument ``origin`` is :ref:`documented separately <lua-origin>`. | |
304 | |
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305 The argument ``info`` was introduced in Orthanc 1.6.1. It contains |
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306 some additional information about the received DICOM instance, |
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307 notably: |
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308 |
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309 * ``HasPixelData`` is ``true`` iff. the Pixel Data (7FE0,0010) tag is |
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310 present. |
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311 * ``TransferSyntaxUID`` contains the transfer syntax UID of the |
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312 dataset of the instance (if applicable). |
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313 |
0 | 314 |
315 .. _lua-filter-rest: | |
316 | |
75 | 317 Filtering incoming REST requests |
0 | 318 -------------------------------- |
319 | |
320 .. highlight:: lua | |
321 | |
322 Lua scripting can be used to control the access to the various URI of | |
323 the REST API. Each time an incoming HTTP request is received, the | |
324 ``IncomingHttpRequestFilter()`` Lua function is called. The access to | |
325 the resource is granted if and only if this callback script returns | |
326 ``true``. | |
327 | |
328 This mechanism can be used to implement fine-grained `access control | |
25 | 329 lists <https://en.wikipedia.org/wiki/Access_control_list>`__. Here is |
0 | 330 an example of a Lua script that limits POST, PUT and DELETE requests |
331 to an user that is called "admin":: | |
332 | |
333 function IncomingHttpRequestFilter(method, uri, ip, username, httpHeaders) | |
334 -- Only allow GET requests for non-admin users | |
335 | |
336 if method == 'GET' then | |
337 return true | |
338 elseif username == 'admin' then | |
339 return true | |
340 else | |
341 return false | |
342 end | |
343 end | |
344 | |
345 Here is a description of the arguments of this Lua callback: | |
346 | |
347 * ``method``: The HTTP method (GET, POST, PUT or DELETE). | |
348 * ``uri``: The path to the resource (e.g. ``/tools/generate-uid``). | |
349 * ``ip``: The IP address of the host that has issued the HTTP request (e.g. ``127.0.0.1``). | |
350 * ``username``: If HTTP Basic Authentication is enabled in the | |
351 :ref:`configuration file <configuration>`, the name of the user that | |
352 has issued the HTTP request (as defined in the ``RegisteredUsers`` | |
353 configuration variable). If the authentication is disabled, this | |
354 argument is set to the empty string. | |
355 * ``httpHeaders``: The HTTP headers of the incoming request. This | |
356 argument is available since Orthanc 1.0.1. It is useful if the | |
357 authentication should be achieved through tokens, for instance | |
358 against a `LDAP | |
359 <https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol>`__ | |
360 or `OAuth2 <https://en.wikipedia.org/wiki/OAuth>`__ server. | |
361 | |
362 | |
363 .. _lua-auto-routing: | |
364 | |
75 | 365 Auto-routing of DICOM images |
0 | 366 ---------------------------- |
367 | |
368 .. highlight:: lua | |
369 | |
370 Since release 0.8.0, the routing of DICOM flows can be very easily | |
371 automated with Orthanc. All you have to do is to declare your | |
372 destination modality in the :ref:`configuration file <configuration>` | |
373 (section ``DicomModalities``), then to create and install a Lua | |
374 script. For instance, here is a sample script:: | |
375 | |
376 function OnStoredInstance(instanceId, tags, metadata) | |
377 Delete(SendToModality(instanceId, 'sample')) | |
378 end | |
379 | |
380 If this script is loaded into Orthanc, whenever a new DICOM instance | |
381 is received by Orthanc, it will be routed to the modality whose | |
382 symbolic name is ``sample`` (through a Store-SCU command), then it | |
383 will be removed from Orthanc. In other words, this is a **one-liner | |
384 script to implement DICOM auto-routing**. | |
385 | |
386 Very importantly, thanks to this feature, you do not have to use the | |
387 REST API or to create external scripts in order to automate simple | |
388 imaging flows. The scripting engine is entirely contained inside the | |
389 Orthanc core system. | |
390 | |
391 Thanks to Lua expressiveness, you can also implement conditional | |
392 auto-routing. For instance, if you wish to route only patients whose | |
393 name contains "David", you would simply write:: | |
394 | |
395 function OnStoredInstance(instanceId, tags, metadata) | |
396 -- Extract the value of the "PatientName" DICOM tag | |
397 local patientName = string.lower(tags['PatientName']) | |
398 | |
399 if string.find(patientName, 'david') ~= nil then | |
400 -- Only route patients whose name contains "David" | |
401 Delete(SendToModality(instanceId, 'sample')) | |
402 | |
403 else | |
404 -- Delete the patients that are not called "David" | |
405 Delete(instanceId) | |
406 end | |
407 end | |
408 | |
409 Besides ``SendToModality()``, a mostly identical function with the | |
410 same arguments called ``SendToPeer()`` can be used to route instances | |
411 to :ref:`Orthanc peers <peers>`. It is also possible to modify the | |
412 received instances before routing them. For instance, here is how you | |
413 would replace the ``StationName`` DICOM tag:: | |
414 | |
415 function OnStoredInstance(instanceId, tags, metadata) | |
416 -- Ignore the instances that result from a modification to avoid | |
417 -- infinite loops | |
418 if (metadata['ModifiedFrom'] == nil and | |
419 metadata['AnonymizedFrom'] == nil) then | |
420 | |
421 -- The tags to be replaced | |
422 local replace = {} | |
423 replace['StationName'] = 'My Medical Device' | |
424 | |
425 -- The tags to be removed | |
426 local remove = { 'MilitaryRank' } | |
427 | |
428 -- Modify the instance, send it, then delete the modified instance | |
429 Delete(SendToModality(ModifyInstance(instanceId, replace, remove, true), 'sample')) | |
430 | |
431 -- Delete the original instance | |
432 Delete(instanceId) | |
433 end | |
434 end | |
435 | |
436 | |
75 | 437 Important remarks about auto-routing |
438 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
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439 |
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440 The ``SendToModality()``, ``SendToPeer()``, ``ModifyInstance()`` and |
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441 ``Delete()`` functions are for the most basic cases of auto-routing |
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442 (implying a single DICOM instance, and possibly a basic modification |
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443 of this instance). The ``ModifyInstance()`` function `could also lead |
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444 to problems |
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445 <https://groups.google.com/d/msg/orthanc-users/hmv2y-LgKm8/oMAuGJWMBgAJ>`__ |
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446 if it deals with tags wrongly interpreted as numbers by Lua. |
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447 |
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448 For more evolved auto-routing scenarios, remember that Lua scripts |
191 | 449 :ref:`have full access to the REST API of Orthanc <lua-rest>`. This is |
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450 illustrated by the ``AutoroutingModification.lua`` sample available in |
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451 the source distribution of Orthanc:: |
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452 |
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453 function OnStoredInstance(instanceId, tags, metadata, origin) |
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454 -- Ignore the instances that result from the present Lua script to |
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455 -- avoid infinite loops |
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456 if origin['RequestOrigin'] ~= 'Lua' then |
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457 |
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458 -- The tags to be replaced |
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459 local replace = {} |
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460 replace['StationName'] = 'My Medical Device' |
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461 replace['0031-1020'] = 'Some private tag' |
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462 |
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463 -- The tags to be removed |
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464 local remove = { 'MilitaryRank' } |
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465 |
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466 -- Modify the instance |
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467 local command = {} |
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468 command['Replace'] = replace |
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469 command['Remove'] = remove |
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470 local modifiedFile = RestApiPost('/instances/' .. instanceId .. '/modify', DumpJson(command, true)) |
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471 |
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472 -- Upload the modified instance to the Orthanc database so that |
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473 -- it can be sent by Orthanc to other modalities |
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474 local modifiedId = ParseJson(RestApiPost('/instances/', modifiedFile)) ['ID'] |
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475 |
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476 -- Send the modified instance to another modality |
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477 RestApiPost('/modalities/sample/store', modifiedId) |
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478 |
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479 -- Delete the original and the modified instances |
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480 RestApiDelete('/instances/' .. instanceId) |
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481 RestApiDelete('/instances/' .. modifiedId) |
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482 end |
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483 end |
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484 |
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485 Also note that :ref:`other callbacks are available <lua-callbacks>` |
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486 (``OnStablePatient()``, ``OnStableStudy()`` and ``OnStableSeries()``) |
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487 to react to other events than the reception of a single instance |
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488 with ``OnStoredInstance()``. |
75 | 489 |
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490 .. _lua-fix-cfind: |
75 | 491 |
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492 Fixing C-Find requests |
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493 ---------------------- |
75 | 494 |
495 :ref:`C-Find requests <dicom-find>` are sometimes interpreted | |
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496 differently by different DICOM servers (e.g. the ``*`` wildcard, as |
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497 `reported by users |
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498 <https://groups.google.com/d/msg/orthanc-users/3g7V7kqr3g0/IREL88RWAwAJ>`__), |
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499 and sometimes a querying modality might set unexpected DICOM tags |
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500 (cf. `this real-world example |
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501 <https://groups.google.com/d/msg/orthanc-users/PLWKqVVaXLs/n_0x4vKhAgAJ>`__). In |
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502 such situations, it is possible to dynamically fix incoming or |
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503 outgoing C-Find queries using a Lua script. |
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504 |
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505 Sanitizing incoming C-Find requests can be done by implementing the |
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506 ``IncomingFindRequestFilter(query, origin)`` callback that is called |
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507 whenever the Orthanc C-Find SCP is queried by a remote modality. For |
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508 instance, here is Lua script to remove a private tag that is specified |
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509 by some manufacturer:: |
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510 |
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511 function IncomingFindRequestFilter(query, origin) |
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512 -- First display the content of the C-Find query |
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513 PrintRecursive(query) |
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514 PrintRecursive(origin) |
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515 |
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516 -- Remove the "PrivateCreator" tag from the query |
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517 local v = query |
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518 v['5555,0010'] = nil |
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519 |
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520 return v |
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521 end |
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522 |
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523 The ``origin`` argument contains information about which modality has |
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524 issued the request. |
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525 |
443
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526 Note that this callback allows you to modify the incoming request |
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527 but will not modify the list of tags that Orthanc will return. |
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528 |
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529 Also note that the ``IncomingFindRequestFilter`` callback is not applied to |
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530 C-Find requests targeting :ref:`modality worklists |
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531 <worklists-plugin>`. Since Orthanc 1.4.2, the corresponding |
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532 ``IncomingWorklistRequestFilter`` callback can be used to sanitize |
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533 C-FIND requests against worklists:: |
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534 |
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535 function IncomingWorklistRequestFilter(query, origin) |
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536 PrintRecursive(query) |
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537 PrintRecursive(origin) |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
105
diff
changeset
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538 |
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IncomingWorklistRequestFilter
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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539 -- Implements the same behavior as the "FilterIssuerAet" |
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IncomingWorklistRequestFilter
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540 -- option of the sample worklist plugin |
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IncomingWorklistRequestFilter
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541 query['0040,0100'][1]['0040,0001'] = origin['RemoteAet'] |
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IncomingWorklistRequestFilter
Sebastien Jodogne <s.jodogne@gmail.com>
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changeset
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542 |
b879a6274065
IncomingWorklistRequestFilter
Sebastien Jodogne <s.jodogne@gmail.com>
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543 return query |
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IncomingWorklistRequestFilter
Sebastien Jodogne <s.jodogne@gmail.com>
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544 end |
105
268ec482f051
IncomingFindRequestFilter not applied to worklist plugin
amazy
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545 |
443
c66d8b7b1a13
more info about IncomingFindRequestFilter
Alain Mazy <alain@mazy.be>
parents:
387
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changeset
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546 |
77
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
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changeset
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547 Similarly, the callback ``OutgoingFindRequestFilter(query, modality)`` |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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548 is invoked whenever Orthanc acts as a C-Find SCU, which gives the |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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549 opportunity to dynamically fix outgoing C-Find requests before they |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
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550 are actually sent to the queried modality. For instance, here is a |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
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551 sample Lua callback that would replace asterisk wildcards (i.e. ``*``) |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
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552 by an empty string for any query/retrieve issued by Orthanc (including |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
553 from Orthanc Explorer):: |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
554 |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
555 function OutgoingFindRequestFilter(query, modality) |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
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changeset
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556 for key, value in pairs(query) do |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
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changeset
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557 if value == '*' then |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
558 query[key] = '' |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
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559 end |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
560 end |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
561 |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
75
diff
changeset
|
562 return query |
48c7d2eb98da
Fixing C-Find requests
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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changeset
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563 end |