feat: add CallbackExporter for in-memory event re-use in tests - #257
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Add a `quent-exporter-callback` crate (exposed via the umbrella's opt-in `callback` feature and `ExporterOptions::Callback`) that forwards each event, type-erased as a boxed `Event<T>`, to a thread-safe callback. Lets tests give a context a callback, collect events in an `Arc<Mutex<Vec<_>>>`, and inspect them after dropping the context — no serialization, no files. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Add a dedicated, paginated entity-list query: POST /api/engines/{id}/entities.
The contract (entities module: scope, window, filter, sort, page, plus per-query
application params) and a generic FiniteStateMachine::try_from_fsm live in
quent-ui; UiAnalyzer::list_entities and its analyzer helper rank any application
FSM by its longest usage span on an optional scope, tiebroken by entity UUID.
Application-specific filters ride in the per-query params: the simulator filters
by operator via OperatorFilter, mirroring the timeline. Additive only — no
timeline changes.
The functional test captures the fixed scenario in memory via a CallbackExporter
(rapidsai#257) and reconstructs the event stream with a new
quent-simulator-instrumentation::test_utils helper. ts-rs bindings included.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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# Description
Adds `POST /api/engines/{engine_id}/entities`: a paginated query listing a
query's FSM entities ranked by longest resource-usage span (tiebroken by UUID),
to back the UI's long-entities view. Additive — no timeline changes.
Request: optional scope (resource / group), query-relative window, filters
(`entity_type_name`, `min_usage_s`), sort, page, and a per-query `OperatorFilter`.
Contract lives in `quent-ui`; a generic `entities::list_entities` ranks any
`FsmCollection` FSM, with operator filtering applied by the analyzer (kept out of
the generic filter).
Functional test over the fixed scenario captures events in memory via
`CallbackExporter` and reconstructs them with a new
`quent-simulator-instrumentation::test_utils` helper.
Depends on #256 and #257 (merged).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
## Related Issues
Part of #214, isolated from #240
Authors:
- Johan Peltenburg (https://github.com/johanpel)
Approvers:
- Dhruv Vats (https://github.com/dhruv9vats)
URL: #258
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Description
Adds a quent-exporter-callback crate, exposed through the umbrella's opt-in callback feature as ExporterOptions::Callback, that forwards each event — type-erased as a boxed Event — to a thread-safe callback. This lets tests give a context a callback, collect emitted events in an Arc<Mutex<Vec<_>>>, and re-use them after dropping the context, with no serialization or files.
🤖 Generated with Claude Code (https://claude.com/claude-code)
Related Issues
Useful for tests such as those that will be added as a part of #214 + #240