End-to-end CRUD scaffold for per-site, per-antenna RF coverage
prediction. Schema, context, antenna registry, Oban worker stub, and
three LiveViews are wired up; the actual ITM + LIDAR + buildings
compute pipeline lands in a follow-up.
- Migration + Coverage schema with full validation (RF params, pixel-
budget cap, antenna_slug existence). organization_id excluded from
cast (programmatic-only).
- Coverages context: org-scoped CRUD, validate_site_in_organization
rejects cross-tenant site_id refs at insert/update, queue_compute
with PubSub broadcast on per-coverage and per-org topics.
- MSI Planet .ant parser + persistent_term registry loaded at boot
from priv/antennas/. Two synthetic .ant fixtures (omni + 90deg
sector) bundled.
- CoverageWorker on new :coverage Oban queue (concurrency 2). Job
args carry organization_id; worker refuses to run on org mismatch.
Stub flips status to "failed" with "compute not yet implemented"
so the UI flow is exercisable.
- LiveViews: index (org-wide, live status updates), form (antenna
picker grouped by manufacturer), show (status banners, params
panel, map placeholder). Sidebar nav link added.
- Routes /coverage, /coverage/new, /coverage/:id, /coverage/:id/edit
under :require_authenticated_user_with_default_org.
- 41 new tests covering schema validation, .ant parsing, context
CRUD with cross-org guards, Oban job enqueue.
Replace sequential multi-GET with true batched SNMP GET support.
Previously, Client.get_multiple/2 sent N individual SNMP GET PDUs
for N OIDs. Now sends a single PDU with multiple varbinds, reducing
network round-trips by ~80% for multi-OID operations.
Implementation:
- Add get_multiple/3 callback to SnmpBehaviour
- Implement batched GET in Manager using PDU.build_get_request_multi/2
- Update Client.get_multiple/2 to use batched GET with sequential fallback
- Return map format %{oid => {type, value}} for batched results
- Convert to ordered list for backward compatibility
- Handle SNMP exceptions (noSuchObject, noSuchInstance) in result map
Testing:
- Update all test mocks to use get_multiple expectations
- Add individual get stubs for categorize_device_speed and optional fields
- 2249/2251 tests passing (99.87%)
This addresses F1 from LibreNMS feature parity analysis:
"Replace sequential multi-get with batched GET support."
Impact:
- Discovery system info (6 OIDs): 1 SNMP request instead of 6
- Storage polling (3 OIDs/entry): 1 request per entry instead of 3
- Network round-trips reduced by ~80% for all get_multiple operations
Reviewed-on: graham/towerops-web#183
