[hash_part, size_part].compact.join '+'
end
- def self.for_latest_docker_image(search_term, search_tag=nil, readers=nil)
+ def self.uuids_for_docker_image(search_term, search_tag=nil, readers=nil)
readers ||= [Thread.current[:user]]
base_search = Link.
readable_by(*readers).
coll_matches = base_search.
where(link_class: "docker_image_hash", collections: {uuid: search_term})
if match = coll_matches.first
- return find_by_uuid(match.head_uuid)
+ return [match.head_uuid]
end
# Find Collections with matching Docker image repository+tag pairs.
"docker_image_hash", "#{search_term}%")
end
- # Select the image that was created most recently. Note that the
- # SQL search order and fallback timestamp values are chosen so
- # that if image timestamps are missing, we use the image with the
- # newest link.
- latest_image_link = nil
- latest_image_timestamp = "1900-01-01T00:00:00Z"
+ # Generate an order key for each result. We want to order the results
+ # so that anything with an image timestamp is considered more recent than
+ # anything without; then we use the link's created_at as a tiebreaker.
+ uuid_timestamps = {}
matches.find_each do |link|
- link_timestamp = link.properties.fetch("image_timestamp",
- "1900-01-01T00:00:01Z")
- if link_timestamp > latest_image_timestamp
- latest_image_link = link
- latest_image_timestamp = link_timestamp
- end
+ uuid_timestamps[link.head_uuid] =
+ [(-link.properties["image_timestamp"].to_datetime.to_i rescue 0),
+ -link.created_at.to_i]
+ end
+ uuid_timestamps.keys.sort_by { |uuid| uuid_timestamps[uuid] }
+ end
+
+ def self.for_latest_docker_image(search_term, search_tag=nil, readers=nil)
+ image_uuid = uuids_for_docker_image(search_term, search_tag, readers).first
+ if image_uuid.nil?
+ nil
+ else
+ find_by_uuid(image_uuid)
end
- latest_image_link.nil? ? nil : find_by_uuid(latest_image_link.head_uuid)
end
end