towerops/lib
Graham McIntire 872f717dba Fix critical bugs, memory leaks, and N+1 queries (#132)
CRITICAL FIXES:
- Fix unsafe pattern matching in SNMP discovery that would crash on timeout
  - Changed {:ok, _} = ... to proper case statements with error handling
  - Extracted safe_discover/3 helper to reduce cyclomatic complexity
  - Added fallback to empty lists and warning logging for timeouts
  - Affects: discover_vlans, discover_ip_addresses, discover_processors, discover_storage

MEMORY LEAK FIXES (JS Hooks):
- GlobalSearchTrigger: Added destroyed() cleanup for click listener
- SidebarCollapse: Added destroyed() cleanup for click listener
- ThemeSelector: Added destroyed() cleanup for phx:set-theme window listener
- NetworkMap: Added destroyed() cleanup for 3 button listeners (zoom in/out/fit)
- All hooks now properly store handler references and remove listeners on unmount

LIVEVIEW FIXES:
- Added phx-update="ignore" to 5 SensorChart hooks to prevent chart re-initialization
- Added catch-all handle_info(_msg, socket) to 5 LiveViews to prevent crashes on unexpected messages
  - device_live/show.ex, device_live/index.ex, alert_live/index.ex, activity_feed_live.ex, agent_live/index.ex

N+1 QUERY FIXES:
- Created Gaiia.get_site_subscriber_summaries/1 batch function
- Refactored alert_live and device_live to use batch query instead of looping
- Reduces queries from N to 1 when loading site subscriber data

Impact:
- Prevents discovery worker crashes during SNMP timeouts
- Eliminates memory accumulation from leaked event handlers
- Prevents chart state loss on LiveView updates
- Prevents LiveView crashes from unexpected PubSub messages
- Improves database performance by eliminating N+1 queries in alert/device views
- Passes credo --strict with 0 issues

Reviewed-on: graham/towerops-web#132
2026-03-23 17:03:41 -05:00
..
mix/tasks Add GeoIP import HTTP tests 2026-03-10 16:02:49 -05:00
snmpkit Rewrite polling_offset, changelog_parser, and user_agent_parser in Gleam (#103) 2026-03-21 10:11:06 -05:00
towerops Fix critical bugs, memory leaks, and N+1 queries (#132) 2026-03-23 17:03:41 -05:00
towerops_web Fix critical bugs, memory leaks, and N+1 queries (#132) 2026-03-23 17:03:41 -05:00
snmp_lib.ex bring in snmpkit 2026-01-23 12:52:17 -06:00
snmp_mgr.ex credo fixes 2026-01-23 14:01:52 -06:00
snmpkit.ex complete overhaul of snmp engine 2026-01-30 10:41:07 -06:00
towerops.ex init 2025-12-21 11:10:43 -06:00
towerops_native.ex Merge remote-tracking branch 'origin/main' into feature/preseem-integration 2026-02-13 09:11:45 -06:00
towerops_web.ex i18n: wrap all user-facing strings in gettext() 2026-02-14 17:44:01 -06:00