chemistry-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mignon, Laurent" <laurent.mig...@acsone.eu>
Subject Re: Does cmislib python support multi-threading?
Date Mon, 28 May 2018 12:34:43 GMT
By default the cmislib uses the 'atompub' binding. Can you try with the
'browser' binding.

from cmislib.browser.binding import BrowserBinding
client  = CmisClient(.., .., binding=BrowserBinding())




On Mon, May 28, 2018 at 2:26 PM, Mike IT Expert <mikeitexpert@gmail.com>
wrote:

> Thanks you so much for quick resposne.
>
> Still the same no difference. (files from one thread goes to folder for
> another thread)
>
> I checked out the code like below:
>
> git clone
> git fetch origin pull/12/head
> git checkout 1073eb533fc3478515f4af3a6f779b63c1b651b2
>
>
> I used Python 3.6.
>
> I don't think it is related to Alfresco, I used the same logic for
> multi-threading using REST API it works just fine.
>
> Thanks,
> Mike
>
>
>
>
>
> On Mon, May 28, 2018 at 12:26 PM, Mignon, Laurent <
> laurent.mignon@acsone.eu>
> wrote:
>
> > Hi Mike,
> >
> > I'm sorry but I've no time to investigate if the problem is on the
> cmislib
> > side or on the alfresco side. Nevertheless, I recently completely
> reworked
> > the cmislib library to make it py2 py3 compatible and at the same time I
> > replaced the dependency on httplib2 by requests. (
> > https://github.com/apache/chemistry-cmislib/pull/12)
> > It could be interesting to make a try with this new version of the
> library
> > and see if the problem is also present into this new one. If the problem
> > comes from cmislib, personally I would prefer to correct it in this new
> > version and speed up thus its release.
> >
> > Regards,
> >
> > Laurent Mignon
> >
> >
> > On Sat, May 26, 2018 at 9:42 PM, Mike IT Expert <mikeitexpert@gmail.com>
> > wrote:
> >
> > > Hi Laurent,
> > >
> > > Please let me know if there has been update on this. I have added my
> > > employer just to see there is anything we can do on our side to make
> the
> > > cmislib thread safe.
> > >
> > > Regards,
> > > M
> > >
> > > On Fri, May 25, 2018 at 7:12 PM, Mike IT Expert <
> mikeitexpert@gmail.com>
> > > wrote:
> > >
> > > >
> > > > Apparently the exception doesn't occur if I use separate parent
> folder
> > > for
> > > > each thread, but the new documents SOMETIMES are created under
> > incorrect
> > > > folder (created by other threads).
> > > >
> > > > Attached is the source code but I cleaned up the code a little and
> took
> > > > out unrelated stuff of mine.
> > > >
> > > > Please let me know the outcome ....
> > > >
> > > > mike
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On Fri, May 25, 2018 at 5:59 PM, Mignon, Laurent <
> > > laurent.mignon@acsone.eu
> > > > > wrote:
> > > >
> > > >> Not sure if it's the root cause but new files are added at same time
> > > into
> > > >> the same parent folder. That means that the parent folder is updated
> > at
> > > >> same time.
> > > >> Do you have the same problem if each thread create files in its own
> > > parent
> > > >> folder?
> > > >>
> > > >> lmignon
> > > >>
> > > >> On Fri, May 25, 2018 at 1:52 PM, Mike IT Expert <
> > mikeitexpert@gmail.com
> > > >
> > > >> wrote:
> > > >>
> > > >> > You are right but my script does't update the same
> resource/document
> > > >> > simultaneously because each thread uploads new files under new
> > unique
> > > >> names
> > > >> > on the server, in that each thread
> > > >> >
> > > >> > *1) creates its own instance of the repository*
> > > >> >
> > > >> > * # 2) upload files and update properties*
> > > >> > * # connect to the server *
> > > >> > * client =  cmislib.CmisClient(SERVER_URL, USER, PASSWD)*
> > > >> >
> > > >> > * # get default repository*
> > > >> > * repo = client.defaultRepository*
> > > >> >
> > > >> > *2) retrieves the target folder's node id*
> > > >> >
> > > >> > * # get the target folder to upload new documents into*
> > > >> > * results = repo.query("select * from cmis:folder where cmis:name
> =
> > > >> '%s'"%(
> > > >> > TARGET_ALFRESCO_FOLDER, ))*
> > > >> > * targetFolder = results[0]*
> > > >> > * targetFolder = repo.getObject( targetFolder.id )*
> > > >> >
> > > >> > *3) for each file (eg. file_i ) in a loop python statement*
> > > >> >
> > > >> >
> > > >> >
> > > >> > * newDoc = targetFolder.createDocument( file_i['docName'],
> > > contentFile =
> > > >> > inFile ) *
> > > >> >
> > > >> > * props = {*
> > > >> > * u'cm:title': file_i[ HDR_TITLE ],*
> > > >> > * u'cm:description': file_i[ HDR_DESCR ],*
> > > >> > * }*
> > > >> >
> > > >> >
> > > >> > * newDoc.updateProperties(props)*
> > > >> >
> > > >> >
> > > >> > So what I am doing is that I access the same folder and upload
new
> > > >> > documents using unique names. I am 100% sure the document names
> (ie.
> > > >> > * file_i['docName']*) are unique under the same folder.
> > > >> >
> > > >> > It just doesn't seem to me to be any concurrency problem with
> above
> > > >> code.
> > > >> >
> > > >> >
> > > >> > Many thanks anyways,
> > > >> > M
> > > >> >
> > > >> >
> > > >> > On Fri, May 25, 2018 at 3:57 PM, Mignon, Laurent <
> > > >> laurent.mignon@acsone.eu
> > > >> > >
> > > >> > wrote:
> > > >> >
> > > >> > > Hi Mike,
> > > >> > >
> > > >> > > I'm not aware of a design issue that could prevent to use
> cmislib
> > > >> python
> > > >> > > into multi threads.
> > > >> > > The problem you describe is a normal behaviour when two
actors
> > > (human
> > > >> or
> > > >> > > prog) update the same resource at same time into alfresco.
> > > >> > >
> > > >> > > Regards,
> > > >> > >
> > > >> > > lmignon
> > > >> > >
> > > >> > > On Fri, May 25, 2018 at 12:19 PM, Mike IT Expert <
> > > >> mikeitexpert@gmail.com
> > > >> > >
> > > >> > > wrote:
> > > >> > >
> > > >> > >> Dear All,
> > > >> > >>
> > > >> > >> Apologies in advance for sending this message to dev
mailing
> list
> > > (I
> > > >> > wish
> > > >> > >> there was userlist also I wasn't sure it is bug or not.)
> > > >> > >>
> > > >> > >> I have started working with cmislib since past week
using
> > Alfresco
> > > as
> > > >> > the
> > > >> > >> local server.
> > > >> > >>
> > > >> > >> My goal is to upload documents provided by json rcord
list in a
> > > for
> > > >> > loop
> > > >> > >> as you see below *which is part of run-overiden method
of
> > > >> > >> threading.Thread.run method for python 2.7*.
> > > >> > >>
> > > >> > >> The main code is attached just in case.
> > > >> > >>
> > > >> > >>
> > > >> > >>
> > > >> > >> The above code works find using ONE thread only. If
I use more
> > than
> > > >> one
> > > >> > >> thread I get the below exception for some records which
is odd.
> > > >> > >>
> > > >> > >>
> > > >> > >> File "module_proj_2_parts_1_and_2.py", line 82, in run
> > > >> > >>     newDoc = targetFolder.createDocument( docName, contentFile
> =
> > > >> inFile
> > > >> > )
> > > >> > >>   File "/home/mike/Desktop/hassan_proj2/.pyenv2/local/lib/
> > python2.
> > > >> > >> 7/site-packages/cmislib/atompub/binding.py", line 2788,
in
> > > >> > createDocument
> > > >> > >>     contentEncoding)
> > > >> > >>   File "/home/mike/Desktop/hassan_proj2/.pyenv2/local/lib/
> > python2.
> > > >> > >> 7/site-packages/cmislib/atompub/binding.py", line 1807,
in
> > > >> > createDocument
> > > >> > >>     ATOM_XML_ENTRY_TYPE)
> > > >> > >>   File "/home/mike/Desktop/hassan_proj2/.pyenv2/local/lib/
> > python2.
> > > >> > >> 7/site-packages/cmislib/atompub/binding.py", line 188,
in post
> > > >> > >>     self._processCommonErrors(resp, url)
> > > >> > >>   File "/home/mike/Desktop/hassan_proj2/.pyenv2/local/lib/
> > python2.
> > > >> > >> 7/site-packages/cmislib/cmis_services.py", line 63,
in
> > > >> > >> _processCommonErrors
> > > >> > >>     raise UpdateConflictException(error[\'status\'],
> > > >> > >> url)\nUpdateConflictException: Error 409 at
> > > >> > >> http://127.0.0.1:8080/alfresco/api/-default-/public/cmis/
> > > >> > >> versions/1.1/atom/children?id=4baddda1-87eb-45eb-8d0b-
> > > 9958b8942c4f\n
> > > >> > >>
> > > >> > >>
> > > >> > >> I doubt if it is bug ... but if it is please let me
know where
> I
> > > can
> > > >> > >> start to fix this.
> > > >> > >>
> > > >> > >> Also, my pip freeze package versions are as below:
> > > >> > >>
> > > >> > >> certifi==2018.4.16
> > > >> > >> chardet==3.0.4
> > > >> > >> cmislib==0.6.0
> > > >> > >> httplib2==0.11.3
> > > >> > >> idna==2.6
> > > >> > >> iso8601==0.1.12
> > > >> > >> requests==2.18.4
> > > >> > >> urllib3==1.22
> > > >> > >>
> > > >> > >> I appreciate any clue/comment.
> > > >> > >>
> > > >> > >> Best Regards,
> > > >> > >> Mike
> > > >> > >>
> > > >> > >>
> > > >> > >>
> > > >> > >>
> > > >> > >>
> > > >> > >
> > > >> > >
> > > >> > > --
> > > >> > > *Laurent Mignon*
> > > >> > > Senior software engineer
> > > >> > >
> > > >> > > Tel: +352 20 21 10 20 32
> > > >> > > Fax: +352 20 21 10 21
> > > >> > > Email: laurent.mignon@acsone.eu
> > > >> > >
> > > >> > > Acsone SA, Succursale de Luxembourg
> > > >> > > 22, Zone Industrielle
> > > >> > > ​ ​
> > > >> > > ​| L-8287 Kehlen, Luxembourg
> > > >> > > TVA LU24733605
> > > >> > > ​ | ​RCS B160400​
> > > >> > >
> > > >> > > ​
> > > >> > > Acsone sa/nv
> > > >> > > Waterloo Atrium, Drève Richelle 167
> > > >> > > <https://maps.google.com/?q=Dr%C3%A8ve+Richelle+167&entry=gm
> > > >> ail&source=g
> > > >> > >
> > > >> > >  | B-1410 Waterloo
> > > >> > > RPM Bruxelles 0835.207.216 RPR Brussel
> > > >> > >
> > > >> > > www.acsone.eu
> > > >> > >
> > > >> > >
> > > >> > >
> > > >> > >
> > > >> >
> > > >>
> > > >
> > > >
> > >
> >
> >
> >
> > --
> > *Laurent Mignon*
> > Senior software engineer
> >
> > Tel: +352 20 21 10 20 32
> > Fax: +352 20 21 10 21
> > Email: laurent.mignon@acsone.eu
> >
> > Acsone SA, Succursale de Luxembourg
> > 22, Zone Industrielle
> > ​ ​
> > ​| L-8287 Kehlen, Luxembourg
> > TVA LU24733605
> > ​ | ​RCS B160400​
> >
> > ​
> > Acsone sa/nv
> > Waterloo Atrium, Drève Richelle 167
> >  | B-1410 Waterloo
> > RPM Bruxelles 0835.207.216 RPR Brussel
> >
> > www.acsone.eu
> >
>



-- 
*Laurent Mignon*
Senior software engineer

Tel: +352 20 21 10 20 32
Fax: +352 20 21 10 21
Email: laurent.mignon@acsone.eu

Acsone SA, Succursale de Luxembourg
22, Zone Industrielle
​ ​
​| L-8287 Kehlen, Luxembourg
TVA LU24733605
​ | ​RCS B160400​

​
Acsone sa/nv
Waterloo Atrium, Drève Richelle 167
 | B-1410 Waterloo
RPM Bruxelles 0835.207.216 RPR Brussel

www.acsone.eu

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message