camera.ui Node SDK

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@camera.ui/sdk / plugin / BasePlugin

Abstract Class: BasePlugin<T> ​

Defined in: plugin/interfaces.ts:166

Base class every plugin extends. It wires up the three dependencies the host injects (logger, PluginAPI, DeviceStorage) and declares the lifecycle methods the host calls on the plugin.

The host calls configureCameras() once at startup with every camera already assigned to this plugin, then onCameraAdded() / onCameraReleased() as the user adds or removes cameras at runtime. The generic T types storage.values so plugin code gets autocompletion for its own settings shape.

Example ​

typescript
export default class MyPlugin extends BasePlugin<MyStorage> {
  private state = new Map<string, MyState>();

  async configureCameras(cameras: CameraDevice[]): Promise<void> {
    for (const camera of cameras) await this.onCameraAdded(camera);
  }

  async onCameraAdded(camera: CameraDevice): Promise<void> {
    this.state.set(camera.id, await this.attach(camera));
  }

  async onCameraReleased(cameraId: string): Promise<void> {
    this.state.get(cameraId)?.dispose();
  }
}

Extended by ​

Type Parameters ​

T ​

T extends Record<string, any> = Record<string, any>

Constructors ​

Constructor ​

new BasePlugin<T>(logger, api, storage): BasePlugin<T>

Defined in: plugin/interfaces.ts:167

Parameters ​

logger ​

LoggerService

api ​

PluginAPI

storage ​

DeviceStorage<T>

Returns ​

BasePlugin<T>

Properties ​

api ​

api: PluginAPI

Defined in: plugin/interfaces.ts:169

logger ​

logger: LoggerService

Defined in: plugin/interfaces.ts:168

storage ​

storage: DeviceStorage<T>

Defined in: plugin/interfaces.ts:170

Accessors ​

storageSchema ​

Get Signature ​

get storageSchema(): JsonSchema[]

Defined in: plugin/interfaces.ts:174

Override to register a JSON schema for the plugin-level settings form rendered in the UI. Default: no schema.

Returns ​

JsonSchema[]

Methods ​

configureCameras() ​

abstract configureCameras(cameras): Promise<void>

Defined in: plugin/interfaces.ts:185

Called once on startup with every camera that is already assigned to this plugin. Attach handlers, open vendor sessions, warm up models here. A rejection aborts plugin startup.

Parameters ​

cameras ​

CameraDevice[]

Cameras already assigned to this plugin.

Returns ​

Promise<void>

configureSensors()? ​

optional configureSensors(sensors): Promise<void>

Defined in: plugin/interfaces.ts:215

Called once on startup with every sensor this plugin may consume: sensors whose type is listed in contract.consumes and that are exposed. Each sensor carries type, assignedCameraIds, assignmentLocked and connected, so consumers decide rendering purely from that data. Optional, only bridge plugins implement it.

Parameters ​

sensors ​

SensorLike[]

Consumable sensors known at startup.

Returns ​

Promise<void>

onCameraAdded() ​

abstract onCameraAdded(camera): Promise<void>

Defined in: plugin/interfaces.ts:195

Called whenever a camera is assigned to this plugin at runtime, after a discovery adoption (DiscoveryProvider.onAdoptCamera) or after the user re-assigns an existing camera. Set up the same per-camera state as in configureCameras().

Parameters ​

camera ​

CameraDevice

The camera device that was added.

Returns ​

Promise<void>

onCameraReleased() ​

abstract onCameraReleased(cameraId): Promise<void>

Defined in: plugin/interfaces.ts:204

Called when a camera is unassigned from this plugin or deleted from the system. Release per-camera resources (sessions, timers, decoders) before resolving.

Parameters ​

cameraId ​

string

ID of the camera that was released.

Returns ​

Promise<void>

onSensorAdded()? ​

optional onSensorAdded(sensor): Promise<void>

Defined in: plugin/interfaces.ts:223

Called when a sensor enters this plugin's consumable view at runtime: it was created, became exposed, or its type became consumable.

Parameters ​

sensor ​

SensorLike

The sensor that appeared.

Returns ​

Promise<void>

onSensorReleased()? ​

optional onSensorReleased(sensorId): Promise<void>

Defined in: plugin/interfaces.ts:232

Called when a sensor permanently leaves the consumable view: it was deleted or unexposed. Plugin connectivity does NOT fire this, watch sensor.onConnectedChanged for that.

Parameters ​

sensorId ​

string

Persistent id of the sensor that left.

Returns ​

Promise<void>