olai-stack-state

The state store the trestle CLI and the desktop app share. It is one SQLite database under $TRESTLE_HOME, defaulting to the platform data directory, and it holds:

• workspaces with their vars
• environments: an editable draft (the placement-free env.toml, the module.yaml texts it lists, vars) and a head
• revisions: numbered, immutable snapshots of a draft, with a digest
• instances: a revision to run, its desired state, overrides and overlay sources
• slot leases: host-wide, so two instances never share a slot, whatever their workspace

Secrets are stored as references (SecretRef); their values stay with their provider. Several processes can use the store at once. Writes are serialized, and a Watcher notices commits made elsewhere. trestle-workspace.toml and environment directories can be imported, and exported again with the instances' slots.

use olai_stack_state::{Draft, Store};
use olai_stack_topology::{EnvManifest, PlanCtx, Selection};

# fn run() -> olai_stack_state::Result<()> {
let store = Store::open_default()?;
let ws = store.create_workspace("demo", false)?;
let manifest = EnvManifest::new(Selection::modules(["unity-catalog"]), PlanCtx::default());
let env = store.create_environment(&ws.id, "dev", Draft::new(manifest))?;
let rev = store.commit_draft(&env.id)?;
let instance = store.create_instance(&env.id, rev.number())?;
println!("slot {}", store.lease_slot(&instance.id)?.slot);
# Ok(())
# }