Variable: buildServiceEntrypoint

const buildServiceEntrypoint: (entrypoint) => ServiceEntrypoint

Type a service entrypoint in the style of lakutata 2.x; the function is returned as it is.

Parameters

entrypoint

ServiceEntrypoint

The function the entrypoint calls when it starts, with the module, the request handler and the destroyer registrar.

Returns

ServiceEntrypoint

The same function, to give to the service option of buildEntrypoints.

Example

import {EventEmitter} from 'node:events'
import {Application} from 'lakutata'
import {buildEntrypoints, buildServiceEntrypoint, Controller, ServiceContext} from 'lakutata/com/entrypoint'
import {ServiceAction} from 'lakutata/decorator/ctrl'

declare const bus: EventEmitter

class MathController extends Controller {
    @ServiceAction({ctrl: 'math', act: 'add'})
    public async add(input: {a: number, b: number}): Promise<number> {
        return input.a + input.b
    }
}

Application.run(() => ({
    id: 'math.app',
    name: 'Math',
    components: {
        entrypoint: buildEntrypoints({
            controllers: [MathController],
            //Each message of the bus is a request: its data matched against the patterns of the actions
            service: buildServiceEntrypoint((module, handler, registerDestroy): void => {
                const listener = async (data: Record<string, any>, reply: (result: unknown) => void): Promise<void> => {
                    reply(await handler(new ServiceContext({data: data})))
                }
                bus.on('request', listener)
                registerDestroy((): void => void bus.off('request', listener))
            })
        })
    },
    bootstrap: ['entrypoint']
}))