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0001-workflows-retry-PDF-generation-if-it-fails-for-some-.patch

Frédéric Péters, 03 juillet 2020 14:38

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Subject: [PATCH] workflows: retry PDF generation if it fails for some unknown
 reason (#44787)


 wcs/wf/export_to_model.py | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)
wcs/wf/export_to_model.py
18 18 
import collections
19 19 
from xml.etree import ElementTree as ET
20 20 
import zipfile
21 
import os
21 22 
import random
22 23 
import subprocess
23 24 
import tempfile
25 
import time
24 26 
import shutil
25 27 

  		




  26
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from django.utils import six

  		




  ......




  76
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                        break

  		




  77
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                    infile.write(chunk)

  		




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                infile.flush()

  		




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                subprocess.check_call(['libreoffice', '--headless', '--convert-to', 'pdf',

  		




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                                       infile.name, '--outdir', temp_dir],

  		




  81
  
  
    
                                      stdout=subprocess.DEVNULL,

  		




  82
  
  
    
                                      stderr=subprocess.DEVNULL)

  		




  
  81
  
    
                for i in range(3):

  		




  
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                    lo_output = subprocess.run(

  		




  
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                            ['libreoffice', '--headless', '--convert-to', 'pdf',

  		




  
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                                infile.name, '--outdir', temp_dir],

  		




  
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                            check=True, stdout=subprocess.PIPE)

  		




  
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                    if os.path.exists(infile.name + '.pdf'):

  		




  
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                        break

  		




  
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                    # sometimes libreoffice fails and sometimes it's ok

  		




  
  89
  
    
                    # afterwards.

  		




  
  90
  
    
                    time.sleep(0.5)

  		




  
  91
  
    
                if not os.path.exists(infile.name + '.pdf'):

  		




  
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                    raise Exception('libreoffice failed to produce pdf (%r)' % lo_output.stdout)

  		




  83
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            return open(infile.name + '.pdf', 'rb')

  		




  84
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        except subprocess.CalledProcessError:

  		




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            raise Exception('libreoffice is failing')

  		




  86
  
  
    
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