class Collection < ArvadosModel
- include AssignUuid
+ include HasUuid
include KindAndEtag
include CommonApiTemplate
+ before_validation :set_portable_data_hash
+ validate :ensure_hash_matches_manifest_text
+
api_accessible :user, extend: :common do |t|
t.add :data_size
t.add :files
+ t.add :name
+ t.add :description
+ t.add :properties
+ t.add :portable_data_hash
end
api_accessible :with_data, extend: :user do |t|
t.add :manifest_text
end
+ def set_portable_data_hash
+ if (self.portable_data_hash.nil? or (self.portable_data_hash == "") or (manifest_text_changed? and !portable_data_hash_changed?))
+ self.portable_data_hash = "#{Digest::MD5.hexdigest(manifest_text)}+#{manifest_text.length}"
+ elsif portable_data_hash_changed?
+ begin
+ loc = Locator.parse!(self.portable_data_hash)
+ loc.strip_hints!
+ self.portable_data_hash = loc.to_s
+ rescue ArgumentError => e
+ errors.add(:portable_data_hash, "#{e}")
+ return false
+ end
+ end
+ true
+ end
+
+ def ensure_hash_matches_manifest_text
+ if manifest_text_changed? or portable_data_hash_changed?
+ computed_hash = "#{Digest::MD5.hexdigest(manifest_text)}+#{manifest_text.length}"
+ unless computed_hash == portable_data_hash
+ logger.debug "(computed) '#{computed_hash}' != '#{portable_data_hash}' (provided)"
+ errors.add(:portable_data_hash, "does not match hash of manifest_text")
+ return false
+ end
+ end
+ true
+ end
+
def redundancy_status
if redundancy_confirmed_as.nil?
'unconfirmed'
end
end
- def assign_uuid
- if self.manifest_text.nil? and self.uuid.nil?
- super
- elsif self.manifest_text and self.uuid
- self.uuid.gsub! /\+.*/, ''
- if self.uuid == Digest::MD5.hexdigest(self.manifest_text)
- self.uuid.gsub! /$/, '+' + self.manifest_text.length.to_s
- true
- else
- errors.add :uuid, 'does not match checksum of manifest_text'
- false
- end
- elsif self.manifest_text
- errors.add :uuid, 'not supplied (must match checksum of manifest_text)'
- false
- else
- errors.add :manifest_text, 'not supplied'
- false
- end
- end
-
def data_size
inspect_manifest_text if @data_size.nil? or manifest_text_changed?
@data_size
return
end
- #normalized_manifest = ""
- #IO.popen(['arv-normalize'], 'w+b') do |io|
- # io.write manifest_text
- # io.close_write
- # while buf = io.read(2**20)
- # normalized_manifest += buf
- # end
- #end
-
@data_size = 0
tmp = {}
raise "uuid #{uuid} has no hash part" if !hash_part
[hash_part, size_part].compact.join '+'
end
+
+ def self.uuids_for_docker_image(search_term, search_tag=nil, readers=nil)
+ readers ||= [Thread.current[:user]]
+ base_search = Link.
+ readable_by(*readers).
+ readable_by(*readers, table_name: "collections").
+ joins("JOIN collections ON links.head_uuid = collections.uuid").
+ order("links.created_at DESC")
+
+ # If the search term is a Collection locator that contains one file
+ # that looks like a Docker image, return it.
+ if loc = Locator.parse(search_term)
+ loc.strip_hints!
+ coll_match = readable_by(*readers).where(portable_data_hash: loc.to_s).limit(1).first
+ if coll_match and (coll_match.files.size == 1) and
+ (coll_match.files[0][1] =~ /^[0-9A-Fa-f]{64}\.tar$/)
+ return [coll_match.uuid]
+ end
+ end
+
+ if search_tag.nil? and (n = search_term.index(":"))
+ search_tag = search_term[n+1..-1]
+ search_term = search_term[0..n-1]
+ end
+
+ # Find Collections with matching Docker image repository+tag pairs.
+ matches = base_search.
+ where(link_class: "docker_image_repo+tag",
+ name: "#{search_term}:#{search_tag || 'latest'}")
+
+ # If that didn't work, find Collections with matching Docker image hashes.
+ if matches.empty?
+ matches = base_search.
+ where("link_class = ? and links.name LIKE ?",
+ "docker_image_hash", "#{search_term}%")
+ end
+
+ # 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|
+ c = Collection.find_by_uuid(link.head_uuid)
+ uuid_timestamps[c.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
+ end
end
projects / arvados.git / blobdiff