catalogue/management/commands/importlessons.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of EduMed, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 import os
   6 import sys
   7 import time
   8 from optparse import make_option
   9 from django.conf import settings
  10 from django.core.management.base import BaseCommand
  11 from django.core.management.color import color_style
  12 from django.core.files import File
  13
  14 from librarian import IOFile
  15 from catalogue.models import Lesson, Section
  16
  17 #from search import Index
  18
  19
  20 class Command(BaseCommand):
  21     option_list = BaseCommand.option_list + (
  22         make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
  23             help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'),
  24         make_option('-a', '--attachments', dest='attachments', metavar="PATH", default='materialy',
  25             help='Attachments dir path.'),
  26     )
  27     help = 'Imports lessons from the specified directories.'
  28     args = 'directory [directory ...]'
  29
  30     def import_book(self, file_path, options, attachments):
  31         verbose = options.get('verbose')
  32         iofile = IOFile.from_filename(file_path)
  33         iofile.attachments = attachments
  34         lesson = Lesson.publish(iofile)
  35
  36     @staticmethod
  37     def all_attachments(path):
  38         files = {}
  39
  40         def read_dir(path):
  41             for name in os.listdir(path):
  42                 fullname = os.path.join(path, name)
  43                 if os.path.isdir(fullname):
  44                     read_dir(fullname)
  45                 else:
  46                     f = IOFile.from_filename(fullname)
  47                     files[name] = f
  48                     files.setdefault(name.replace(" ", ""), f)
  49
  50         read_dir(path)
  51         return files
  52
  53
  54     def handle(self, *directories, **options):
  55         from django.db import transaction
  56
  57         self.style = color_style()
  58
  59         verbose = options.get('verbose')
  60
  61         # Start transaction management.
  62         transaction.commit_unless_managed()
  63         transaction.enter_transaction_management()
  64         transaction.managed(True)
  65
  66         files_imported = 0
  67         files_skipped = 0
  68
  69         for dir_name in directories:
  70             if not os.path.isdir(dir_name):
  71                 print self.style.ERROR("%s: Not a directory. Skipping." % dir_name)
  72             else:
  73                 att_dir = os.path.join(dir_name, options['attachments'])
  74                 attachments = self.all_attachments(att_dir)
  75
  76                 # files queue
  77                 files = sorted(os.listdir(dir_name))
  78                 postponed = {}
  79                 while files:
  80                     file_name = files.pop(0)
  81                     file_path = os.path.join(dir_name, file_name)
  82                     file_base, ext = os.path.splitext(file_path)
  83
  84                     # Skip files that are not XML files
  85                     if not ext == '.xml':
  86                         continue
  87
  88                     if verbose > 0:
  89                         print "Parsing '%s'" % file_path
  90                     else:
  91                         sys.stdout.write('.')
  92                         sys.stdout.flush()
  93
  94                     # Import book files
  95                     try:
  96                         self.import_book(file_path, options, attachments)
  97                         files_imported += 1
  98                         transaction.commit()
  99                     except Section.IncompleteError, e:
 100                         if file_name not in postponed or postponed[file_name] < files_imported:
 101                             # Push it back into the queue, maybe the missing lessons will show up.
 102                             if verbose > 0:
 103                                 print self.style.NOTICE('Waiting for missing lessons.')
 104                             files.append(file_name)
 105                             postponed[file_name] = files_imported
 106                         else:
 107                             # We're in a loop, nothing's being imported - some lesson is really missing.
 108                             raise e
 109                     except BaseException, e:
 110                         import traceback
 111                         traceback.print_exc()
 112                         files_skipped += 1
 113
 114         # Print results
 115         print
 116         print "Results: %d files imported, %d skipped, %d total." % (
 117             files_imported, files_skipped, files_imported + files_skipped)
 118         print
 119
 120         transaction.commit()
 121         transaction.leave_transaction_management()