70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
# Copyright 2017 Catalyst IT Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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from PIL import Image
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import swiftclient
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from swiftclient.exceptions import ClientException
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def resize_image(image_path, resized_path):
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with Image.open(image_path) as image:
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image.thumbnail(tuple(x / 4 for x in image.size))
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image.save(resized_path)
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def main(context, container_name, object_name):
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conn = swiftclient.Connection(
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session=context['os_session'],
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os_options={'region_name': 'RegionOne'},
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)
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# Download original image
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image_path = os.path.abspath('./%s' % object_name)
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_, obj_contents = conn.get_object(container_name, object_name)
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with open(image_path, 'w') as local:
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local.write(obj_contents)
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print('Downloaded object %s from container %s' %
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(object_name, container_name))
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thumb_path = os.path.abspath('./%s_resized.png' % object_name)
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resize_image(image_path, thumb_path)
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print('Resized.')
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# Create new container if needed
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new_container_name = '%s_resized' % container_name
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try:
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conn.head_container(new_container_name)
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except ClientException:
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conn.put_container(new_container_name)
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print("New container %s created." % new_container_name)
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# Upload resized image
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with open(thumb_path, 'r') as new_local:
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conn.put_object(
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new_container_name,
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object_name,
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contents=new_local,
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content_type='text/plain'
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)
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os.remove(image_path)
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os.remove(thumb_path)
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print('Uploaded object %s to container %s' %
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(object_name, new_container_name))
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