55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
import logging
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from data.database import ImageStorage, Image, db, db_for_update
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from app import app
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logger = logging.getLogger(__name__)
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def backfill_aggregate_sizes():
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""" Generates aggregate sizes for any image storage entries without them """
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logger.debug('Aggregate sizes backfill: Began execution')
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while True:
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batch_image_ids = list(Image
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.select(Image.id)
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.where(Image.aggregate_size >> None)
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.limit(100))
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if len(batch_image_ids) == 0:
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# There are no storages left to backfill. We're done!
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logger.debug('Aggregate sizes backfill: Backfill completed')
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return
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logger.debug('Aggregate sizes backfill: Found %s records to update', len(batch_image_ids))
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for image_id in batch_image_ids:
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logger.debug('Updating image : %s', image_id.id)
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with app.config['DB_TRANSACTION_FACTORY'](db):
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try:
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image = (Image
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.select(Image, ImageStorage)
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.join(ImageStorage)
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.where(Image.id == image_id)
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.get())
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aggregate_size = image.storage.image_size
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image_ids = image.ancestor_id_list()
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for image_id in image_ids:
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to_add = db_for_update(Image
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.select(Image, ImageStorage)
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.join(ImageStorage)
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.where(Image.id == image_id)).get()
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aggregate_size += to_add.storage.image_size
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image.aggregate_size = aggregate_size
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image.save()
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except Image.DoesNotExist:
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pass
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if __name__ == "__main__":
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logging.basicConfig(level=logging.DEBUG)
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logging.getLogger('peewee').setLevel(logging.CRITICAL)
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backfill_aggregate_sizes()
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