Hi tõnis,
Thank you so much for the effort to keep this thread running!
I actually did the same thing by replacing jython-2.5.0.jar with
jython-2.7.0.jar in the WEB-INF\lib directory of GeoServer installation
directory.
My question is how you manged to get "pip install requests -t
data_dir/scripts/lib/py" work? Did you run the pip command off your native
Python or the standalone Jython?
I ran the same command ""pip install requests -t
"C:\geoserver_data\scripts\lib\py" off my standalone Jython but it gave me the
follow error messages:Traceback (most recent call last): File
"C:\jython2.7.0\Lib\runpy.py", line 161, in _run_module_as_main return
_run_code(code, main_globals, None, File "C:\jython2.7.0\Lib\runpy.py", line
72, in _run_code exec code in run_globals File
"C:\jython2.7.0\bin\pip.exe\__main__.py", line 5, in <module> File
"C:\jython2.7.0\Lib\site-packages\pip\__init__.py", line 10, in <module>
from pip.util import get_installed_distributions, get_prog File
"C:\jython2.7.0\Lib\site-packages\pip\util.py", line 17, in <module> from
pip.locations import ( File
"C:\jython2.7.0\Lib\site-packages\pip\locations.py", line 109, in <module>
build_prefix = _get_build_prefix() File
"C:\jython2.7.0\Lib\site-packages\pip\locations.py", line 90, in
_get_build_prefix if file_uid != os.geteuid():AttributeError: 'module'
object has no attribute 'geteuid'
"easy_install -d "C:\geoserver_data\scripts\lib\py" requests" didn't work
either.
I had to run "easy_install requests" and it proved working for me! Because it
was installed to ""C:\jython2.7.0\Lib\site-packages\", I had to manually copy
the installed requests and its depending packages to
"C:\geoserver_data\scripts\lib\py" so that my script can import it.
I am not confident to tell whether your switching is safe or of any resulted
consequence it might possibly have. What I am guess made your script work on
Jython-2.7.0 but failed on Jython-2.5.0 is that Jython-2.7.0 may include the
dependent packages necessary to get "requests" that Jython-2.5.0 does not have.
Maybe Daniel has a better answer. :)
Regards,Alex
On Wednesday, 6 September 2017, 4:14:20 pm AEST, tõnis kärdi
<[email protected]> wrote:
Alex, Daniel, thank you so much for this thread. And I'm going to
secretly hijack it with an extra question :)
How is jython version switching supposed to happen (offcially)? Is it
possible at all?
What I tried was (and this is drawn upon the original question by Alex
about using python requests) still stubbornly use non-jython pip
install of python packages.
a) Fresh GeoServer 2.11.2 stable bin on an Ubuntu box, install wps and
python plugins
b) Add data_dir/scripts/apps/hello.py as :
import requests
url = 'http://api.open-notify.org/iss-now.json'
def app(environ, start_response):
r = requests.get(url)
r.raise_for_status()
start_response('200 OK', [('Content-Type', 'application/json')])
return [r.content]
c) Restart geoserver and then from commandline
$ http -a admin http://localhost:8080/geoserver/script/apps/hello
http: password for admin@localhost:8080:
HTTP/1.1 500 Server Error
Content-Encoding: gzip
Content-Type: text/plain
Server: Jetty(9.2.13.v20150730)
Transfer-Encoding: chunked
Error executing script main.py:ImportError: No module named
requests in <script> at line number 1
d) pip install requests -t data_dir/scripts/lib/py
e) But this will fail again
$ http -a admin http://localhost:8080/geoserver/script/apps/hello
http: password for admin@localhost:8080:
HTTP/1.1 500 Server Error
Content-Encoding: gzip
Content-Type: text/plain
Server: Jetty(9.2.13.v20150730)
Transfer-Encoding: chunked
Error executing script main.py:SyntaxError: mismatched input 'as'
expecting COLON in
...data_dir/scripts/lib/py/urllib3/connectionpool.py at line number
347 at column number 45
f) This looks like a py syntax error for exception handling,
connectionpool.py:347 is:
...
except (SocketTimeout, BaseSSLError) as e:
...
g) Download latest jython standalone jar from jython homepage (v 2.7.0
http://www.jython.org/downloads.html) and place it in
$GEOSERVER_HOME/webapps/geoserver/WEB-INF/lib. And remove the jarfile
packaged with GeoServer (jython-2.5.2.jar). Restart GeoServer.
h) And now the script works just fine:
$ http -a admin http://localhost:8080/geoserver/script/apps/hello
http: password for admin@localhost:8080:
HTTP/1.1 200 OK
Content-Encoding: gzip
Content-Type: application/json
Date: Wed, 06 Sep 2017 05:53:00 GMT
Server: Noelios-Restlet-Engine/1.0..8
Transfer-Encoding: chunked
{
"iss_position": {
"latitude": "-14.3754",
"longitude": "-91.2309"
},
"message": "success",
"timestamp": 1504677179
}
---
Is this kind of jython jar switching is ok and are there any
known/hypothetical consequences to it?
All the best,
Tõnis
2017-09-06 7:45 GMT+03:00 Alex Chen <[email protected]>:
> Thanks Daniel so much!
>
> I think I have an increased understanding of Jython in GeoServer. If I
> understand it correctly, there are two options to use 3rd party libraries in
> Python scripting given that both Java and Python implementations are
> available. One is to use Jython's easy_install or pip to install the
> packages similar to the way that the native Python equivalent does. The
> other way is to use the Java implementation (the jar file) and copy it to
> "... ...\geoserver\WEB-INF\lib\". Either way, we can import the library in a
> Python script to be exposed as a custom App or WPS on GeoServer.
>
> Cheers,
> Alex
>
> On Wednesday, 6 September 2017, 12:44:11 pm AEST, Daniel Baird
> <[email protected]> wrote:
>
>
> On Wed, 6 Sep 2017 at 11:01 Alex Chen <[email protected]> wrote:
>
> Many thanks, Daniel & Tõnis, for both of your replies!
>
> The GeoServer 2.11.2 uses Jython-2.5.0.jar that is saved in the
> "WEB-INF/lib".
>
>
> I haven't tried this but I'd try getting easy_install by getting the python
> file from http://peak.telecommunity.com/dist/ez_setup.py, then running
> something like:
>
> java -jar /whatever/path/WEB-INF/lib/Jython-2.5.0.jar ez-setup.py
>
> ..and doing the rest of a normal Python bootstrap into pip, but typing "java
> -jar /whatever/path/WEB-INF/lib/Jython-2.5.0.jar" instead of typing
> "python". Then remember to specify the path to Jython's verison of pip
> whenever you run pip, wherever that is.
>
>
> [...]In terms of the "requests" package, I am still having trouble
> installing through pip or easy_install off the standalone Jython.
>
> C:\jython2.7.0\bin>pip install requests
> Traceback (most recent call last):
> File "C:\jython2.7.0\Lib\runpy.py", line 161, in _run_module_as_main
> [...]
>
>
> if file_uid != os.geteuid():
>
> AttributeError: 'module' object has no attribute 'geteuid'
>
>
> Try updating pip as recommended here:
> https://stackoverflow.com/questions/30530976/how-to-install-selenium2library-for-robot-framework-using-pip-jython
>
>
>
>
> - Daniel, you mentioned that "from Jython we can use Java networking
> libraries". Can you elaborate it in details please? How can I use 3rd Java
> libs in writing a GeoServer custom app or a web processing service in Python
> or JavaScript as I would like to stick with Python/JavaScript?
>
>
> As long as the .class files are in your classpath, I think you can just use
> import to pull in Java library classes and use them:
> http://www.jython.org/jythonbook/en/1.0/JythonAndJavaIntegration.html
> Although if you normally write python, it's probably simpler to stick with
> whatever libs you're used to.
>
>
> Cheers
> Daniel ------------------------------------------------------------------------------
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