75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
import logging
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from peewee import (CharField, BigIntegerField, BooleanField, ForeignKeyField, DateTimeField,
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TextField, fn)
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from data.database import BaseModel
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from util.migrate.allocator import yield_random_entries
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from app import app
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BATCH_SIZE = 1000
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logger = logging.getLogger(__name__)
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class Repository(BaseModel):
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pass
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# Vendor the information from tables we will be writing to at the time of this migration
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class ImageStorage(BaseModel):
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uuid = CharField(index=True, unique=True)
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checksum = CharField(null=True)
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image_size = BigIntegerField(null=True)
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uncompressed_size = BigIntegerField(null=True)
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uploading = BooleanField(default=True, null=True)
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cas_path = BooleanField(default=True)
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content_checksum = CharField(null=True, index=True)
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class Image(BaseModel):
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docker_image_id = CharField(index=True)
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repository = ForeignKeyField(Repository)
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ancestors = CharField(index=True, default='/', max_length=64535, null=True)
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storage = ForeignKeyField(ImageStorage, index=True, null=True)
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created = DateTimeField(null=True)
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comment = TextField(null=True)
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command = TextField(null=True)
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aggregate_size = BigIntegerField(null=True)
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v1_json_metadata = TextField(null=True)
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v1_checksum = CharField(null=True)
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def backfill_checksums():
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""" Copies checksums from image storages to their images. """
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logger.debug('Began execution')
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logger.debug('This may be a long operation!')
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def batch_query():
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return (Image
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.select(Image, ImageStorage)
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.join(ImageStorage)
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.where(Image.v1_checksum >> None, ImageStorage.uploading == False,
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~(ImageStorage.checksum >> None)))
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max_id = Image.select(fn.Max(Image.id)).scalar()
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written = 0
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for candidate_image, abort in yield_random_entries(batch_query, Image.id, BATCH_SIZE, max_id):
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num_changed = (Image
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.update(v1_checksum=candidate_image.storage.checksum)
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.where(Image.id == candidate_image.id, Image.v1_checksum >> None)).execute()
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if num_changed == 0:
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logger.info('Collision with another worker, aborting batch')
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abort.set()
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written += num_changed
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if (written % BATCH_SIZE) == 0:
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logger.debug('%s entries written', written)
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logger.debug('Completed, updated %s entries', written)
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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_checksums()
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