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Audit the number of SQL queries we make in writing manifests, and significantly reduce in the common case

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Instead of 41 queries now for the simple manifest, we are down to 14.

The biggest changes:
  - Only synthesize the V1 image rows if we haven't already found them in the database
  - Thread the repository object through to the other model method calls, and use it instead of loading again and again
This commit is contained in:
Joseph Schorr 2018-01-11 16:25:38 -05:00
parent 4f47808e99
commit 9e16a989f5
8 changed files with 145 additions and 66 deletions
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2
image/docker/schema1.py
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@ -165,7 +165,7 @@ class DockerSchema1Manifest(object):
try:
validate_schema(self._parsed, DockerSchema1Manifest.METASCHEMA)
except ValidationError as ve:
raise MalformedSchema1Manifest('malformed manifest data: %s' % ve)
raise MalformedSchema1Manifest('manifest data does not match schema: %s' % ve)
self._signatures = self._parsed[DOCKER_SCHEMA1_SIGNATURES_KEY]
self._tag = self._parsed[DOCKER_SCHEMA1_REPO_TAG_KEY]