qinling/example/functions/python/openstack/create_thumbnail.py

62 lines
1.7 KiB
Python

# Copyright 2017 Catalyst IT Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from PIL import Image
import swiftclient
def resize_image(image_path, resized_path):
with Image.open(image_path) as image:
image.thumbnail((75, 75))
image.save(resized_path)
def main(context, container, object):
conn = swiftclient.Connection(
session=context['os_session'],
os_options={'region_name': 'RegionOne'},
)
new_container = '%s_thumb' % container
# Download original photo
image_path = '/%s' % object
_, obj_contents = conn.get_object(container, object)
with open(image_path, 'w') as local:
local.write(obj_contents)
print('Downloaded object %s from container %s' % (object, container))
thumb_path = '/thumb_%s' % object
resize_image(image_path, thumb_path)
print('Resized.')
# Upload thumb photo
with open(thumb_path, 'r') as new_local:
conn.put_object(
new_container,
object,
contents=new_local,
content_type='text/plain'
)
os.remove(image_path)
os.remove(thumb_path)
print('Uploaded object %s to container %s' % (object, new_container))