+
+ protected
+
+ # find the user from the given user parameters
+ def find_user_from_input(user_uuid, user_email)
+ if user_uuid
+ found_object = User.find_by_uuid user_uuid
+ end
+
+ if !found_object
+ begin
+ if !user_email
+ return
+ end
+
+ if !user_email.match(/\w\@\w+\.\w+/)
+ logger.warn ("Given user param is not valid email format: #{user_email}")
+ raise ArgumentError.new "User param is not of valid email format. Stop"
+ else
+ found_objects = User.where('email=?', user_email)
+ if found_objects.size > 1
+ logger.warn ("Found #{found_objects.size} users with email #{user_email}. Stop.")
+ raise ArgumentError.new "Found #{found_objects.size} users with email #{user_email}. Stop."
+ elsif found_objects.size == 1
+ found_object = found_objects.first
+ end
+ end
+ end
+ end
+
+ return found_object
+ end
+
+ # link the repo_name passed
+ def create_user_repo_link(repo_name)
+ if not repo_name
+ logger.warn ("Repository name not given for #{@object[:uuid]}. Skip creating the link")
+ return
+ end
+
+ # Check for an existing repository with the same name we're about to use.
+ repo = (repositories = Repository.where(name: repo_name)) != nil ? repositories.first : nil
+ if repo
+ logger.warn "Repository already exists with name #{repo_name}: #{repo[:uuid]}. Will link to user."
+
+ # Look for existing repository access (perhaps using a different repository/user name).
+ repo_perms = Link.where(tail_uuid: @object[:uuid],
+ head_kind: 'arvados#repository',
+ head_uuid: repo[:uuid],
+ link_class: 'permission',
+ name: 'can_write')
+ if [] != repo_perms
+ logger.warn "User already has repository access " + repo_perms.collect { |p| p[:uuid] }.inspect
+ return
+ end
+ end
+
+ repo ||= Repository.create(name: repo_name) # create repo, if does not already exist
+ logger.info { "repo uuid: " + repo[:uuid] }
+
+ repo_perm = Link.create(tail_kind: 'arvados#user',
+ tail_uuid: @object[:uuid],
+ head_kind: 'arvados#repository',
+ head_uuid: repo[:uuid],
+ link_class: 'permission',
+ name: 'can_write')
+ logger.info { "repo permission: " + repo_perm[:uuid] }
+ end
+
+ # create login permission for the given vm_uuid, if it does not already exist
+ def create_vm_login_permission_link(vm_uuid, repo_name)
+ # Look up the given virtual machine just to make sure it really exists.
+ begin
+ vm = (vms = VirtualMachine.where(uuid: vm_uuid)) != nil ? vms.first : nil
+ if not vm
+ logger.warn "Could not look up virtual machine with uuid #{vm_uuid.inspect}"
+ return
+ end
+
+ logger.info { "vm uuid: " + vm[:uuid] }
+
+ login_perm = Link.where(tail_uuid: @object[:uuid],
+ head_uuid: vm[:uuid],
+ head_kind: 'arvados#virtualMachine',
+ link_class: 'permission',
+ name: 'can_login')
+ if [] == login_perm
+ login_perm = Link.create(tail_kind: 'arvados#user',
+ tail_uuid: @object[:uuid],
+ head_kind: 'arvados#virtualMachine',
+ head_uuid: vm[:uuid],
+ link_class: 'permission',
+ name: 'can_login',
+ properties: {username: repo_name})
+ logger.info { "login permission: " + login_perm[:uuid] }
+ end
+ end
+ end
+
+ # add the user to the 'All users' group
+ def create_user_group_link
+ # Look up the "All users" group (we expect uuid *-*-fffffffffffffff).
+ group = Group.where(name: 'All users').select do |g|
+ g[:uuid].match /-f+$/
+ end.first
+
+ if not group
+ logger.warn "Could not look up the 'All users' group with uuid '*-*-fffffffffffffff'. Skip."
+ return
+ else
+ logger.info { "\"All users\" group uuid: " + group[:uuid] }
+
+ group_perm = Link.where(tail_uuid: @object[:uuid],
+ head_uuid: group[:uuid],
+ head_kind: 'arvados#group',
+ link_class: 'permission',
+ name: 'can_read')
+
+ if [] == group_perm
+ group_perm = Link.create(tail_kind: 'arvados#user',
+ tail_uuid: @object[:uuid],
+ head_kind: 'arvados#group',
+ head_uuid: group[:uuid],
+ link_class: 'permission',
+ name: 'can_read')
+ logger.info { "group permission: " + group_perm[:uuid] }
+ end
+ end
+ end
+