class Arvados::V1::CollectionsController < ApplicationController
def create
- # It's not an error for a client to re-register a manifest that we
- # already know about.
- @object = model_class.new resource_attrs
- begin
- @object.save!
- rescue ActiveRecord::RecordNotUnique
- logger.debug resource_attrs.inspect
- if resource_attrs['manifest_text'] and resource_attrs['uuid']
- @existing_object = model_class.
- where('uuid=? and manifest_text=?',
- resource_attrs['uuid'],
- resource_attrs['manifest_text']).
- first
- @object = @existing_object || @object
+ # Collections are owned by system_user. Creating a collection has
+ # two effects: The collection is added if it doesn't already
+ # exist, and a "permission" Link is added (if one doesn't already
+ # exist) giving the current user (or specified owner_uuid)
+ # permission to read it.
+ owner_uuid = resource_attrs.delete(:owner_uuid) || current_user.uuid
+ owner_kind = if owner_uuid.match(/-(\w+)-/)[1] == User.uuid_prefix
+ 'arvados#user'
+ else
+ 'arvados#group'
+ end
+ unless current_user.can? write: owner_uuid
+ raise ArvadosModel::PermissionDeniedError
+ end
+ act_as_system_user do
+ @object = model_class.new resource_attrs.reject { |k,v| k == :owner_uuid }
+ begin
+ @object.save!
+ rescue ActiveRecord::RecordNotUnique
+ logger.debug resource_attrs.inspect
+ if resource_attrs[:manifest_text] and resource_attrs[:uuid]
+ @existing_object = model_class.
+ where('uuid=? and manifest_text=?',
+ resource_attrs[:uuid],
+ resource_attrs[:manifest_text]).
+ first
+ @object = @existing_object || @object
+ end
+ end
+
+ if @object
+ link_attrs = {
+ owner_uuid: owner_uuid,
+ link_class: 'permission',
+ name: 'can_read',
+ head_kind: 'arvados#collection',
+ head_uuid: @object.uuid,
+ tail_kind: owner_kind,
+ tail_uuid: owner_uuid
+ }
+ ActiveRecord::Base.transaction do
+ if Link.where(link_attrs).empty?
+ Link.create! link_attrs
+ end
+ end
end
end
show
end
+
+ def collection_uuid(uuid)
+ m = /([a-f0-9]{32}(\+[0-9]+)?)(\+.*)?/.match(uuid)
+ if m
+ m[1]
+ else
+ nil
+ end
+ end
+
+ def script_param_edges(visited, sp)
+ if sp and not sp.empty?
+ case sp
+ when Hash
+ sp.each do |k, v|
+ script_param_edges(visited, v)
+ end
+ when Array
+ sp.each do |v|
+ script_param_edges(visited, v)
+ end
+ else
+ m = collection_uuid(sp)
+ if m
+ generate_provenance_edges(visited, m)
+ end
+ end
+ end
+ gr
+ end
+
+ def generate_provenance_edges(visited, uuid)
+ m = collection_uuid(uuid)
+
+ if not uuid or uuid.empty? or visited[uuid] or visited[m]
+ return ""
+ end
+
+ #puts "visiting #{uuid}"
+
+ if m
+ # uuid is a collection
+ uuid = m
+ Collection.where(uuid:"uuid").each do |c|
+ visited[uuid] = c
+ end
+
+ Job.where(output: uuid).each do |job|
+ generate_provenance_edges(visited, job.uuid)
+ end
+
+ Job.where(log: uuid).each do |job|
+ generate_provenance_edges(visited, job.uuid)
+ end
+
+ else
+ visited[uuid] = true
+
+ # uuid is something else
+ rsc = ArvadosBase::resource_class_for_uuid uuid
+
+ if rsc == Job
+ Job.where(uuid: uuid).each do |job|
+ visited[uuid] = job
+ script_param_edges(visited, job, "", job.script_parameters)
+ end
+ end
+
+ Link.where(head_uuid: uuid, link_class: "provenance").each do |link|
+ generate_provenance_edges(visited, link.tail_uuid)
+ end
+
+ #puts "finished #{uuid}"
+
+ gr
+ end
+
+ def provenance
+ visited = {}
+ generate_provenance_edges(visited, @object.uuid)
+ visited
+ end
+
+ protected
+
+ def find_object_by_uuid
+ super
+ if !@object and !params[:uuid].match(/^[0-9a-f]+\+\d+$/)
+ # Normalize the given uuid and search again.
+ hash_part = params[:uuid].match(/^([0-9a-f]*)/)[1]
+ collection = Collection.where('uuid like ?', hash_part + '+%').first
+ if collection
+ # We know the collection exists, and what its real uuid is in
+ # the database. Now, throw out @objects and repeat the usual
+ # lookup procedure. (Returning the collection at this point
+ # would bypass permission checks.)
+ @objects = nil
+ @where = { uuid: collection.uuid }
+ find_objects_for_index
+ @object = @objects.first
+ end
+ end
+ end
end
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