DTE Infrastructure Component


Federated Data Infrastructure


A tool for linking a user’s federated identity with their facility account.

Account LInking Service (ALISE) is a tool for linking a user’s federated identity with their facility account.  ALISE provides an automated procedure for users of a facility to register their federated identity.

Most facilities have some account identity and access management (IAM) system.  Among other things, this component is responsible for handling supported authentication, with typical features allowing passwords to be changed, handling forgotten passwords, and registering SSH public keys.

Currently, most facilities have no support for OIDC (token-based) authentication.  Therefore, their IAM solutions typically do not allow a user to register their OIDC identity.

ALISE is an easy-to-deploy stand-along service.  By allowing users to register their OIDC identity, an ALISE instance allows sites to deploy other services that require OIDC/token-based authentication, and for those other services to identify users by their federated identity.

The process to register a user’s OIDC identity is needed only once per user.  It requires no admin intervention

Release Notes

This release represents a technical preview of the interTwin federated data management solution.

There are two external software components: FTS and Rucio.  They are fully established projects, independent of the interTwin project.  The software is production-ready, at TRL 9, and hardened with many years of production-critical use.  Both projects have multiple deployments of their software, operated by different communities.

The ALISE software is currently in a development phase, under the aegis of interTwin.  At the time of release, ALISE is TRL 4.  The user-facing functionality of ALISE is mostly feature-complete; however, anticipated changes to the API imply that the necessary integration work (whereby a service uses ALISE to identify a user) should be considered experimental. Feedback from early adopters is encouraged, but any plans to deploy ALISE should be tempered by the anticipated changes to the API.

The teapot software is also currently in a development phase, within the interTwin project.  Teapot is TRL 3–4.  The current release is sufficient to build a limited proof-of-concept demonstration, supporting the data transfer requirements of a single user.

Future Plans

A number of improvements are planned for teapot. Teapot will be updated to support multiple, concurrent users. The per-user WebDAV instance management will be automated, starting new services on demand, and terminating them if there is sufficient idle time. It will also be updated to integrate with ALISE, to support automated identity management.

For ALISE, we anticipate possible improvements and stabilisation of the service-integration API, based on experience gained from integrating ALISE into various services. In addition, we plan to add support for client authentication in future versions of ALISE. This will limit access to the identity mapping information, providing this information to authorised services only.

There are currently no immediate plans to improve FTS. Future experience from integrating the testbed with the interTwin service providers may identify necessary enhancements to FTS.

Plan to enhance Rucio by improving support for integrating Rucio with external catalogues; e.g., Lattice QCD’s catalogue.  Other plans to enhance Rucio may emerge from our experience when integrating Rucio with DTE core service, DTE thematic modules, and with the science use cases.


Target Audience

Users of the Component All DT users that (directly or otherwise) make use of a facility that does not allow users to register their federated identity.





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