Files
shopdb-flask/shopdb/plugins/base.py
cproudlock e3c4b90afe ADR-013 Phase 3: generic asset-panels renderer (Path A)
Wires the ADR-010 get_asset_panels hook to a generic frontend renderer so a
plugin adds detail-page UI as JSON, no Vue. This is the Path A foundation that
lets simple plugins ship UI without a frontend build.

- components/PluginAssetPanels.vue + pluginAssetPanels.js: fetches
  /api/pluginui/asset-panels for an asset, then each panel's data endpoint, and
  renders by mode: list (title + status badge + meta lines via a field map),
  keyvalue, table (declared or inferred columns), badge. Pure mapping logic is
  in the .js module and unit tested (9 specs), same pattern as entryForm.js.
- New 'list' render mode with a declarative field map (title/badge/meta),
  documented on the hook in base.py.
- Warranty migrated to it: get_asset_panels now declares a 'list' panel + map
  that reproduces WarrantyPanel's output (vendor title, status badge with color
  + label map, servicelevel/ends/tag meta, manage link) with zero
  warranty-specific frontend code.
- MachineDetail swapped from <WarrantyPanel> to <PluginAssetPanels> (pilot); the
  hero warranty badge is unchanged. Verified end to end: the API serves the list
  panel + map and the warranty rows; the page renders without error.

Rollout of the other 4 detail pages (PCDetail, PrinterDetail, NetworkDeviceDetail,
MeasuringToolDetail) and the map-overlays / asset-presentation renderers are
follow-up Phase 3 commits. 58 vitest, build clean, 1067 backend pass, naming green.
2026-07-18 22:43:54 -04:00

353 lines
13 KiB
Python

"""Base plugin class that all plugins must inherit from."""
from abc import ABC, abstractmethod
from typing import List, Dict, Optional, Type
from dataclasses import dataclass, field
from flask import Flask, Blueprint
@dataclass
class PluginMeta:
"""Plugin metadata container."""
name: str
version: str
description: str
author: str = ""
dependencies: List[str] = field(default_factory=list)
# Default to the current pre-1.0 contract range; tighten when 1.0 lands
core_version: str = ">=0.2.0,<1.0.0"
api_prefix: str = None
def __post_init__(self):
if self.api_prefix is None:
self.api_prefix = f"/api/{self.name.replace('_', '-')}"
class BasePlugin(ABC):
"""
Base class for all ShopDB plugins.
Plugins must implement:
- meta: PluginMeta instance
- get_blueprint(): Return Flask Blueprint for API routes
- get_models(): Return list of SQLAlchemy model classes
Optionally implement:
- init_app(app, db): Custom initialization
- get_cli_commands(): Return Click commands
- get_services(): Return service classes
- on_install(): Called when plugin is installed
- on_uninstall(): Called when plugin is uninstalled
- on_enable(): Called when plugin is enabled
- on_disable(): Called when plugin is disabled
"""
@property
@abstractmethod
def meta(self) -> PluginMeta:
"""Return plugin metadata."""
pass
@abstractmethod
def get_blueprint(self) -> Optional[Blueprint]:
"""Return Flask Blueprint with API routes."""
pass
@abstractmethod
def get_models(self) -> List[Type]:
"""Return list of SQLAlchemy model classes."""
pass
def init_app(self, app: Flask, db) -> None:
"""
Initialize plugin with Flask app.
Override for custom initialization.
"""
pass
def get_cli_commands(self) -> List:
"""Return list of Click command groups/commands."""
return []
def get_services(self) -> Dict[str, Type]:
"""Return dict of service name -> service class."""
return {}
def get_provisioning_note(self) -> Optional[Dict]:
"""Transparency note shown when a site enables this plugin.
Return None for plugins that need no special setup. For plugins that
create extra tables (e.g. a self-hosted directory or USB tables), return:
{
'tables': ['directoryemployees', ...], # created in the shopdb DB
'note': 'Plain-language what/why.',
'docs': 'plugins/<name>/README.md', # where the schema lives
}
The setup wizard shows this the moment the plugin is checked.
"""
return None
def get_config_schema(self) -> List[Dict]:
"""Declare the config fields this plugin needs, for the setup wizard.
Each field is a dict:
key - the Setting key (non-secret) it maps to
label - human label
type - 'text' | 'number' | 'password'
secret - True for credentials; these are NOT stored in the DB, the
wizard emits an .env line for the operator to paste instead
envvar - (secret only) the .env variable name to emit
default - optional default shown as a placeholder
help - optional hint
Return [] (default) if the plugin needs no configuration.
"""
return []
def get_setting(self, key: str, default=None):
"""Read a plugin-scoped setting from the core Setting store.
Settings are namespaced by plugin name to avoid collisions
across plugins. The on-disk key is `plugin.<pluginname>.<key>`.
Returns the typed value (string, integer, boolean, etc.) or
the default if not set.
"""
from shopdb.core.models import Setting
namespaced_key = f'plugin.{self.meta.name}.{key}'
return Setting.get(namespaced_key, default)
def set_setting(self, key: str, value, valuetype: str = 'string',
description: str = None) -> None:
"""Write a plugin-scoped setting to the core Setting store.
Settings are namespaced by plugin name. Persists immediately and
survives restarts.
"""
from shopdb.core.models import Setting
namespaced_key = f'plugin.{self.meta.name}.{key}'
Setting.set(
namespaced_key,
value,
valuetype=valuetype,
category=f'plugin.{self.meta.name}',
description=description,
)
def get_collector_schema(self) -> Optional[Dict]:
"""Return JSON Schema describing the collector payload for this plugin.
Return None if the plugin does not accept collector input.
See ADR-006 for the contract. The schema must include:
- 'identityfield': name of the field that uniquely identifies an
asset across submissions (e.g., 'hostname' for PCs,
'macaddress' for network devices). Used for idempotent upsert.
- 'fields': JSON Schema definitions for the rest of the payload.
Plugins returning a non-None schema have an endpoint at
/api/collector/<pluginname> auto-registered by the loader.
"""
return None
def apply_collector_payload(self, payload: Dict) -> Dict:
"""Idempotently upsert an asset from a validated collector payload.
Called by the generic /api/collector/<pluginname> endpoint after the
payload passed schema validation. Plugins that return a schema from
get_collector_schema must implement this. Return a dict with at least:
- 'action': 'created' | 'updated' | 'noop'
- 'assetid': the affected asset id (or None)
- 'warnings': list[str]
"""
raise NotImplementedError(
f"{self.meta.name} declares a collector schema but does not "
f"implement apply_collector_payload"
)
def on_install(self, app: Flask) -> None:
"""Called when plugin is installed via CLI."""
pass
def on_uninstall(self, app: Flask) -> None:
"""Called when plugin is uninstalled via CLI."""
pass
def on_enable(self, app: Flask) -> None:
"""Called when plugin is enabled."""
pass
def on_disable(self, app: Flask) -> None:
"""Called when plugin is disabled."""
pass
def get_dashboard_widgets(self) -> List[Dict]:
"""
Return dashboard widget definitions.
Each widget: {
'name': str,
'component': str, # Frontend component name
'endpoint': str, # API endpoint for data
'size': str, # 'small', 'medium', 'large'
'position': int # Order on dashboard
}
"""
return []
def get_navigation_items(self) -> List[Dict]:
"""
Return navigation menu items.
Each item: {
'name': str,
'icon': str,
'route': str,
'position': int,
'children': []
}
"""
return []
def get_permissions(self) -> List:
"""
Return the RBAC permissions this plugin owns.
Each entry is a (name, description, category) tuple, matching the core
permission catalog shape (dicts with those keys are also accepted):
[
('machines.view', 'View machines', 'machines'),
('machines.create', 'Create machines', 'machines'),
('machines.edit', 'Edit machines', 'machines'),
('machines.delete', 'Delete machines', 'machines'),
]
A plugin owns the permission names its own routes enforce via
require_permission; core no longer accumulates them. The names must
follow the naming convention (lowercase dotted, e.g. `machines.edit`).
Consumed by full_permission_catalog(): core permissions plus every
ENABLED plugin's get_permissions(). That catalog backs `flask seed
permissions`, the role-management grid (GET /api/users/permissions),
and API-token scope validation. Plugin install/enable also seeds the
plugin's own permissions idempotently.
Disabled plugins are skipped by the catalog, so their permissions are
no longer offered for new scope grants or new role assignments. The
Permission ROWS already in the database are NOT deleted, so roles that
already reference them keep working until an admin edits the role. A
broken plugin is isolated in prod and re-raised in dev/test.
Return [] (the default) if the plugin needs no permissions.
"""
return []
def get_reports(self) -> List[Dict]:
"""
Return report card definitions for the Reports hub.
Each entry: {
'id': str, # stable report id
'name': str, # card title
'description': str, # one-line blurb
'category': str, # grouping key (lowercase)
# plus EXACTLY ONE of:
'route': str, # frontend path for a dedicated report page
'endpoint': str, # API endpoint for generic inline rendering
}
Consumed by GET /api/reports, which merges these after the static core
reports. Disabled plugins are skipped by the consumer.
"""
return []
def get_settings_cards(self) -> List[Dict]:
"""
Return settings-catalog card definitions (ADR-010).
Each card contributes an entry to the settings rail + landing overview
without a plugin hand-editing the core settingsNav.js catalog.
Each card: {
'group': str, # rail group title (created if new)
'to': str, # settings route the card links to
'icon': str, # string key, mapped to a Lucide icon core-side
'title': str, # card title
'description': str, # one-line blurb
'position': int, # order within the group
}
Consumed by GET /api/pluginui/settings-cards, which merges enabled
plugins' cards into the core catalog. Disabled plugins are skipped;
a broken plugin is isolated in prod, re-raised in dev/test.
"""
return []
def get_asset_panels(self) -> List[Dict]:
"""
Return asset-detail extension-panel definitions (ADR-010).
A generic core AssetPanel component renders each panel on the asset
detail pages whose type matches, fetching the panel's endpoint. This
replaces hand-composing a plugin panel component into each detail view.
Each panel: {
'id': str, # stable panel id
'title': str, # panel heading
'assettypes': List[str], # AssetType keys it appears on; ['*'] = all
'endpoint': str, # data endpoint (may contain {assetid})
'render': str, # 'keyvalue' | 'table' | 'badge' | 'list'
# ('list' takes a 'map' of title/badge/meta
# keys, rendered generically - see warranty)
'position': int, # order among panels
}
Consumed by GET /api/pluginui/asset-panels?assetid=<id>, which returns
the panels matching that asset's type. Disabled plugins
are skipped; a broken plugin is isolated in prod, re-raised in dev/test.
A panel needing bespoke UI is out of scope for the data-only hook.
"""
return []
def get_map_overlays(self) -> List[Dict]:
"""
Return shop-floor map overlay/decoration definitions (ADR-010).
The map is data-driven off asset types + positions; an overlay adds
decoration data (a badge or ring on already-placed markers) plus a
legend entry, without the plugin shipping any map code.
Each overlay: {
'id': str, # stable overlay id
'label': str, # legend label
'endpoint': str, # returns [{assetid, color, label}] to decorate
'style': str, # 'badge' | 'ring'
'legend': bool, # True to add a legend entry
}
Consumed by GET /api/pluginui/map-overlays. Disabled plugins are
skipped; a broken plugin is isolated in prod, re-raised in dev/test.
"""
return []
def get_asset_presentation(self) -> List[Dict]:
"""
Return asset-type presentation/routing definitions (ADR-010).
Declares how a plugin-owned asset type renders in global-search rows
and cross-links: which icon to show and where the detail link points,
so core never hardcodes a plugin's route or icon.
Each entry: {
'assettype': str, # AssetType.assettype key the plugin owns
'icon': str, # string key, mapped to a Lucide icon core-side
'label': str, # human label for the type
'route': str, # detail-route pattern (may contain {assetid})
}
Consumed by GET /api/pluginui/asset-presentation. Disabled plugins are
skipped; a broken plugin is isolated in prod, re-raised in dev/test.
"""
return []