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From Mike IT Expert <mikeitexp...@gmail.com>
Subject Re: Does cmislib python support multi-threading?
Date Mon, 28 May 2018 12:26:55 GMT
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
>

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