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quay/util/migrate/backfill_parent_id.py
2015-11-10 11:10:09 -05:00

82 lines
2.7 KiB
Python

import logging
from data.database import BaseModel
from peewee import (fn, CharField, BigIntegerField, ForeignKeyField, BooleanField, DateTimeField,
TextField, IntegerField)
from app import app
from util.migrate.allocator import yield_random_entries
BATCH_SIZE = 1000
class Repository(BaseModel):
pass
# Vendor the information from tables we will be writing to at the time of this migration
class ImageStorage(BaseModel):
uuid = CharField(index=True, unique=True)
checksum = CharField(null=True)
image_size = BigIntegerField(null=True)
uncompressed_size = BigIntegerField(null=True)
uploading = BooleanField(default=True, null=True)
cas_path = BooleanField(default=True)
content_checksum = CharField(null=True, index=True)
class Image(BaseModel):
docker_image_id = CharField(index=True)
repository = ForeignKeyField(Repository)
ancestors = CharField(index=True, default='/', max_length=64535, null=True)
storage = ForeignKeyField(ImageStorage, index=True, null=True)
created = DateTimeField(null=True)
comment = TextField(null=True)
command = TextField(null=True)
aggregate_size = BigIntegerField(null=True)
v1_json_metadata = TextField(null=True)
v1_checksum = CharField(null=True)
security_indexed = BooleanField(default=False)
security_indexed_engine = IntegerField(default=-1)
parent_id = IntegerField(index=True, null=True)
logger = logging.getLogger(__name__)
def backfill_parent_id():
logger.setLevel(logging.DEBUG)
logger.debug('backfill_parent_id: Starting')
logger.debug('backfill_parent_id: This can be a LONG RUNNING OPERATION. Please wait!')
def fetch_batch():
return (Image
.select(Image.id, Image.ancestors)
.join(ImageStorage)
.where(Image.parent_id >> None, Image.ancestors != '/',
ImageStorage.uploading == False))
max_id = Image.select(fn.Max(Image.id)).scalar()
written = 0
for to_backfill, abort in yield_random_entries(fetch_batch, Image.id, BATCH_SIZE, max_id):
computed_parent = int(to_backfill.ancestors.split('/')[-2])
num_changed = (Image
.update(parent_id=computed_parent)
.where(Image.id == to_backfill.id, Image.parent_id >> None)).execute()
if num_changed == 0:
logger.info('Collision with another worker, aborting batch')
abort.set()
written += num_changed
if (written % BATCH_SIZE) == 0:
logger.debug('%s entries written', written)
logger.debug('backfill_parent_id: Completed, updated %s entries', written)
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
logging.getLogger('peewee').setLevel(logging.CRITICAL)
backfill_parent_id()