851c51a354
* Added configuration options to mediagoblin.ini
* process_media supports the python-cloudfiles
almost-file-like objects by wrapping them in a
contextlib.contextmanager-decorated func.
* storage now has the CloudFilesStorage
* New dependency added to setup.py; `python-cloudfiles`
109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2011 Free Software Foundation, Inc
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import Image
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from mediagoblin.db.util import ObjectId
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from celery.task import task
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from mediagoblin import mg_globals as mgg
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from contextlib import contextmanager
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THUMB_SIZE = 180, 180
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MEDIUM_SIZE = 640, 640
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def create_pub_filepath(entry, filename):
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return mgg.public_store.get_unique_filepath(
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['media_entries',
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unicode(entry['_id']),
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filename])
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@contextmanager
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def closing(callback):
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try:
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yield callback
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finally:
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pass
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@task
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def process_media_initial(media_id):
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workbench = mgg.workbench_manager.create_workbench()
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entry = mgg.database.MediaEntry.one(
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{'_id': ObjectId(media_id)})
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queued_filepath = entry['queued_media_file']
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queued_filename = workbench.localized_file(
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mgg.queue_store, queued_filepath,
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'source')
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thumb = Image.open(queued_filename)
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thumb.thumbnail(THUMB_SIZE, Image.ANTIALIAS)
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# ensure color mode is compatible with jpg
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if thumb.mode != "RGB":
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thumb = thumb.convert("RGB")
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thumb_filepath = create_pub_filepath(entry, 'thumbnail.jpg')
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thumb_file = mgg.public_store.get_file(thumb_filepath, 'w')
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with closing(thumb_file):
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thumb.save(thumb_file, "JPEG", quality=90)
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"""
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If the size of the original file exceeds the specified size of a `medium`
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file, a `medium.jpg` files is created and later associated with the media
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entry.
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"""
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medium = Image.open(queued_filename)
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medium_processed = False
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if medium.size[0] > MEDIUM_SIZE[0] or medium.size[1] > MEDIUM_SIZE[1]:
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medium.thumbnail(MEDIUM_SIZE, Image.ANTIALIAS)
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if medium.mode != "RGB":
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medium = medium.convert("RGB")
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medium_filepath = create_pub_filepath(entry, 'medium.jpg')
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medium_file = mgg.public_store.get_file(medium_filepath, 'w')
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with closing(medium_file):
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medium.save(medium_file, "JPEG", quality=90)
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medium_processed = True
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# we have to re-read because unlike PIL, not everything reads
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# things in string representation :)
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queued_file = file(queued_filename, 'rb')
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with queued_file:
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original_filepath = create_pub_filepath(entry, queued_filepath[-1])
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with closing(mgg.public_store.get_file(original_filepath, 'wb')) as original_file:
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original_file.write(queued_file.read())
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mgg.queue_store.delete_file(queued_filepath)
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entry['queued_media_file'] = []
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media_files_dict = entry.setdefault('media_files', {})
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media_files_dict['thumb'] = thumb_filepath
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media_files_dict['original'] = original_filepath
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if medium_processed:
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media_files_dict['medium'] = medium_filepath
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entry['state'] = u'processed'
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entry.save()
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# clean up workbench
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workbench.destroy_self()
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