- end
-
- # Create a new container (or find an existing one) to satisfy this
- # request.
- def resolve
- c_mounts = mounts_for_container
- c_runtime_constraints = runtime_constraints_for_container
- c_container_image = container_image_for_container
- c = act_as_system_user do
- c_attrs = {command: self.command,
- cwd: self.cwd,
- environment: self.environment,
- output_path: self.output_path,
- container_image: c_container_image,
- mounts: c_mounts,
- runtime_constraints: c_runtime_constraints}
-
- reusable = self.use_existing ? Container.find_reusable(c_attrs) : nil
- if not reusable.nil?
- reusable
- else
- c_attrs[:scheduling_parameters] = self.scheduling_parameters
- Container.create!(c_attrs)
- end
- end
- self.container_uuid = c.uuid
- end
-
- # Return a runtime_constraints hash that complies with
- # self.runtime_constraints but is suitable for saving in a container
- # record, i.e., has specific values instead of ranges.
- #
- # Doing this as a step separate from other resolutions, like "git
- # revision range to commit hash", makes sense only when there is no
- # opportunity to reuse an existing container (e.g., container reuse
- # is not implemented yet, or we have already found that no existing
- # containers are suitable).
- def runtime_constraints_for_container
- rc = {}
- runtime_constraints.each do |k, v|
- if v.is_a? Array
- rc[k] = v[0]
- else
- rc[k] = v
- end
- end
- rc
- end
-
- # Return a mounts hash suitable for a Container, i.e., with every
- # readonly collection UUID resolved to a PDH.
- def mounts_for_container
- c_mounts = {}
- mounts.each do |k, mount|
- mount = mount.dup
- c_mounts[k] = mount
- if mount['kind'] != 'collection'
- next
- end
- if (uuid = mount.delete 'uuid')
- c = Collection.
- readable_by(current_user).
- where(uuid: uuid).
- select(:portable_data_hash).
- first
- if !c
- raise ArvadosModel::UnresolvableContainerError.new "cannot mount collection #{uuid.inspect}: not found"
- end
- if mount['portable_data_hash'].nil?
- # PDH not supplied by client
- mount['portable_data_hash'] = c.portable_data_hash
- elsif mount['portable_data_hash'] != c.portable_data_hash
- # UUID and PDH supplied by client, but they don't agree
- raise ArgumentError.new "cannot mount collection #{uuid.inspect}: current portable_data_hash #{c.portable_data_hash.inspect} does not match #{c['portable_data_hash'].inspect} in request"
- end
- end
- end
- return c_mounts
- end
-
- # Return a container_image PDH suitable for a Container.
- def container_image_for_container
- coll = Collection.for_latest_docker_image(container_image)
- if !coll
- raise ArvadosModel::UnresolvableContainerError.new "docker image #{container_image.inspect} not found"
- end
- return coll.portable_data_hash