[RSS Phase 1] Read-only resource status via CacheableSource

[aldbr]

Goal

Consumers (jobs, file transfers, pilot submission) can read resource status (Sites, CEs, SEs) through the config distribution mechanism, backed by the existing ResourceStatusDB. Legacy DIRAC agents continue writing to the DB — diracx is read-only in this phase.

Sub-issues

graph LR
    AB[RSS data models<br/>SQLAlchemy + Pydantic] --> DE[ResourceStatusSource<br/>+ route + tests]
    C[C. CacheableSource<br/>refactoring] --> DE

    style AB fill:#c3e6cb
    style C fill:#c3e6cb

Loading

Green = can start day 1 (parallel, independent).