Printers belong to the bay, not to the box currently driving it. The assignment
goes on the MACHINE asset and reaches whichever PC controls it, so a reimaged or
swapped PC comes back with the right printers and nothing had to be saved off the
old one. The asset register is the backup.
New relationship type usesprinter ("this printer is installed here"), beside the
existing defaultprinter ("which of them is the default"), both seeded and both
given a propagation rail through controls. The rails are consumed at READ time
only: the create-time fan-out skips directional through-types, and controls is
directional, so assigning a printer to a machine does not copy rows onto its PC.
That is what keeps own-beats-inherited possible.
Resolution for a PC is its OWN rows if it has any, otherwise one hop out along
controls to the machines it drives. Whole set at a time, not merged: a PC with
its own assignment is overriding the bay deliberately, and the UI has to say so
or a tech "fixing" a bay by editing the PC will shadow the machine's record and
wonder why they keep disagreeing.
GET /api/printers/for-host/<hostname> is what the convergence client asks every
cycle. Resolved by hostname because the collector upserts PCs by hostname and an
office PC has no machine number. An unknown host, a site without the computers
plugin, and nothing assigned all return an empty set - that is the client's
designed no-op and it must stay indistinguishable from "assigned nothing".
PUT /api/printers/assignments/for-asset/<id> reconciles the whole set in one
call. The endpoint was specified, documented and asserted by three tests, and
never written - the verification pass caught that, with four failures. It
validates the default BEFORE any write, so a rejected request changes nothing;
soft-deletes rows that went away; and REACTIVATES soft-deleted rows rather than
inserting, because the unique constraint spans inactive rows and a blind insert
after an unassign raises IntegrityError on MySQL while passing on SQLite.
One default per asset, enforced here because the schema cannot: the constraint is
(source, target, type), which accepts two different defaults quite happily. Two
active defaults are still reachable through the generic relationships endpoint,
where the oldest silently wins - recorded in the proposal as the next thing to
close.
printerdrivers gains drivername: the exact string the INF declares, which
Add-PrinterDriver matches on and nothing else. Deriving it by parsing INFs on
hundreds of bays is fragile; a human confirming it once is not.
Poll Zabbix for toner levels on a schedule and email/webhook on a downward
crossing. Warning fires at or below the warning threshold (default 5%),
critical at the critical threshold (default 0%); both thresholds are settings.
State lives in printersupplyalerts so an alert fires once per crossing and
re-arms after a refill.
Recipients mirror the printedparts pattern: plugin-scoped shopdb users +
roles + free-text emails (falling back to the site alert_recipients), and a
chosen support team's webhook (falling back to the site alert_webhook_url).
- PrinterSupplyAlert model + migration printers0002supplyalerts
- alerttier(remaining, warning, critical) + check_supplies poller
- flask printers check-toner-alerts CLI (run via scheduled task/cron)
- printers alert settings + Low-Toner Alerts settings page
- 7 tests: tier boundaries, once-per-crossing + re-arm, toner-only scope,
custom thresholds, support-team webhook routing
Framework:
- Per-plugin Alembic migration chains (ADR-008): every bundled plugin
carries its own chain with a stamp-only anchor at the ownership cutover;
new plugin schema lands in plugins/<name>/migrations/, never the core
chain. Deploys add flask plugin upgrade-all. Fixed a latent bug in the
shared alembic template (engine URL resolution) and taught the metadata
filter to include FK-referenced core tables.
- Frontend plugin route gating (ADR-009): plugin routes carry meta.plugin;
a disabled plugin's pages redirect to the dashboard via a cached,
fail-open check against the new public GET /api/plugins/enabled.
- get_reports() plugin hook (contract 0.5.0 -> 0.6.0): plugins contribute
report cards; warranty and toner cards moved off the hardcoded list.
Reports:
- Hub grouped by category with search; inline reports render at the top,
are URL-backed (?report=id, back-button and deep links work), expose
their server-side filter params as controls, and export CSV. Warranty
and Toner pages gained CSV export.
- Deleted the dead legacy Warranty Status report (always-zero buckets
from a retired column).
Theming and fonts:
- Inter (variable) bundled locally via @fontsource, replacing the Google
Fonts Roboto import - air-gapped installs now render correctly; tables
use tabular numerals.
- Optional brand_primary_dark_color, brand_accent_color,
brand_sidebar_color settings applied to CSS vars at bootstrap.
USB frontend repair (views were reading a dead legacy shape):
- List/detail/form and the employee profile USB panels remapped to the
real API shape (device_id/device_desc/checkinoutlog); employee panels
now use /usb/checkouts endpoints; external-mode /usb/checkouts/active
honors the badge filter; dead client methods pruned.
Also: warranties list page no longer requires login (matches app
convention); collector doc rewritten with a GE-Enforce integration guide
and paste-ready PowerShell reporter; ADR index and CHANGELOG updated.
Verified: 323 tests pass, naming/style green, frontend builds, plugin
migration dry-run green on scratch MySQL.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The core chain already owns and reproduces the full bundled schema (deploys run
`flask db upgrade` only). The per-plugin Alembic baselines duplicated those
tables, so `flask plugin upgrade-all` would conflict - a footgun. Remove the 6
bundled plugin migration dirs; the per-plugin Alembic helpers
(alembic_template, PluginMigrationRunner) remain for external/filesystem
plugins. upgrade-all now cleanly no-ops for bundled plugins.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Rewrite the printer Zabbix integration (Bearer auth, host-by-IP, tag-based
supply lookup, ping) and replace the hardcoded toner table with a
modelsupplies table + CRUD + seed. Add mock Zabbix server, live test
harness, and the Playwright screenshot tooling.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Each of the six bundled plugins (computers, equipment, network,
notifications, printers, usb) now has its own Alembic chain with a
baseline migration. Sister sites adopting one of these plugins can
manage its schema via `flask plugin migrate <name>` instead of relying
on db.create_all to bootstrap everything.
Existing single-site deploys that bootstrap via db.create_all continue
to work unchanged. The chains coexist; the bootstrap path stays the
operator's choice.
Framework
- shopdb/plugins/alembic_template.py: shared env.py logic + helpers.
PLUGIN_TABLE_OWNERS pins which tables belong to which plugin (explicit
registry, not import-side-effect). _get_plugin_metadata filters
db.metadata to only the named plugin's tables. create_plugin_tables /
drop_plugin_tables emit DDL via SQLAlchemy CreateTable so the table
definitions stay sourced from the models, not duplicated.
- shopdb/plugins/__init__.py: PluginManager.upgrade_all_plugins() runs
pending migrations across every discovered plugin and returns a status
dict. Idempotent (Alembic skips applied revisions).
CLI
- `flask plugin upgrade-all` runs pending migrations for every plugin.
Used on a fresh deploy after the core schema is in place.
Per-plugin scaffolding
- plugins/{computers,equipment,network,notifications,printers,usb}/
migrations/{alembic.ini, env.py, script.py.mako, versions/0001_baseline.py}
- Each env.py is a 5-line shim that sets PLUGIN_NAME and delegates to
the shared template. Each 0001_baseline calls create_plugin_tables(name)
/ drop_plugin_tables(name); no duplication of column definitions.
Tests
- tests/test_plugin_migrations.py (18 cases): every bundled plugin has
an entry in PLUGIN_TABLE_OWNERS, has the on-disk Alembic scaffolding,
and the filtered MetaData contains every owned table (catches drift
between the template's table list and what the models declare).
- 129 tests pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
