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(os.path.join(self.curdir, 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         self.curdir = os.path.abspath(os.curdir)
  61
  62
  63         # Start transaction management.
  64         transaction.commit_unless_managed()
  65         transaction.enter_transaction_management()
  66         transaction.managed(True)
  67
  68         files_imported = 0
  69         files_skipped = 0
  70
  71         for dir_name in directories:
  72             abs_dir = os.path.join(self.curdir, dir_name)
  73             if not os.path.isdir(abs_dir):
  74                 print self.style.ERROR("%s: Not a directory. Skipping." % abs_dir)
  75             else:
  76                 att_dir = os.path.join(abs_dir, options['attachments'])
  77                 attachments = self.all_attachments(att_dir)
  78
  79                 # files queue
  80                 files = sorted(os.listdir(abs_dir))
  81                 postponed = {}
  82                 while files:
  83                     file_name = files.pop(0)
  84                     file_path = os.path.join(abs_dir, file_name)
  85                     file_base, ext = os.path.splitext(file_path)
  86
  87                     # Skip files that are not XML files
  88                     if not ext == '.xml':
  89                         continue
  90
  91                     if verbose > 0:
  92                         print "Parsing '%s'" % file_path
  93                     else:
  94                         sys.stdout.write('.')
  95                         sys.stdout.flush()
  96
  97                     # Import book files
  98                     try:
  99                         self.import_book(file_path, options, attachments)
 100                         files_imported += 1
 101                         transaction.commit()
 102                     except Section.IncompleteError, e:
 103                         if file_name not in postponed or postponed[file_name] < files_imported:
 104                             # Push it back into the queue, maybe the missing lessons will show up.
 105                             if verbose > 0:
 106                                 print self.style.NOTICE('Waiting for missing lessons.')
 107                             files.append(file_name)
 108                             postponed[file_name] = files_imported
 109                         else:
 110                             # We're in a loop, nothing's being imported - some lesson is really missing.
 111                             raise e
 112                     except BaseException, e:
 113                         import traceback
 114                         traceback.print_exc()
 115                         files_skipped += 1
 116
 117         # Print results
 118         print
 119         print "Results: %d files imported, %d skipped, %d total." % (
 120             files_imported, files_skipped, files_imported + files_skipped)
 121         print
 122
 123         transaction.commit()
 124         transaction.leave_transaction_management()