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# frozen_string_literal: true
module Projects
module ContainerRepository
class CleanupTagsService < BaseService
def execute(container_repository)
return error('feature disabled') unless can_use?
return error('access denied') unless can_admin?
tags = container_repository.tags
tags_by_digest = group_by_digest(tags)
tags = without_latest(tags)
tags = filter_by_name(tags)
tags = with_manifest(tags)
tags = order_by_date(tags)
tags = filter_keep_n(tags)
tags = filter_by_older_than(tags)
deleted_tags = delete_tags(tags, tags_by_digest)
success(deleted: deleted_tags.map(&:name))
end
private
def delete_tags(tags_to_delete, tags_by_digest)
deleted_digests = group_by_digest(tags_to_delete).select do |digest, tags|
delete_tag_digest(digest, tags, tags_by_digest[digest])
end
deleted_digests.values.flatten
end
def delete_tag_digest(digest, tags, other_tags)
# Issue: https://gitlab.com/gitlab-org/gitlab-foss/issues/21405
# we have to remove all tags due
# to Docker Distribution bug unable
# to delete single tag
return unless tags.count == other_tags.count
# delete all tags
tags.map(&:unsafe_delete)
end
def group_by_digest(tags)
tags.group_by(&:digest)
end
def without_latest(tags)
tags.reject(&:latest?)
end
def with_manifest(tags)
tags.select(&:valid?)
end
def order_by_date(tags)
now = DateTime.now
tags.sort_by { |tag| tag.created_at || now }.reverse
end
def filter_by_name(tags)
regex = Gitlab::UntrustedRegexp.new("\\A#{params['name_regex']}\\z")
tags.select do |tag|
regex.scan(tag.name).any?
end
end
def filter_keep_n(tags)
tags.drop(params['keep_n'].to_i)
end
def filter_by_older_than(tags)
return tags unless params['older_than']
older_than = ChronicDuration.parse(params['older_than']).seconds.ago
tags.select do |tag|
tag.created_at && tag.created_at < older_than
end
end
def can_admin?
can?(current_user, :admin_container_image, project)
end
def can_use?
Feature.enabled?(:container_registry_cleanup, project, default_enabled: true)
end
end
end
end
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