| 1 | import type { CircularArray } from '../circular-array' |
| 2 | |
| 3 | /** |
| 4 | * Callback invoked if the worker has received a message. |
| 5 | */ |
| 6 | export type MessageHandler<Worker extends IWorker> = ( |
| 7 | this: Worker, |
| 8 | m: unknown |
| 9 | ) => void |
| 10 | |
| 11 | /** |
| 12 | * Callback invoked if the worker raised an error. |
| 13 | */ |
| 14 | export type ErrorHandler<Worker extends IWorker> = ( |
| 15 | this: Worker, |
| 16 | e: Error |
| 17 | ) => void |
| 18 | |
| 19 | /** |
| 20 | * Callback invoked when the worker has started successfully. |
| 21 | */ |
| 22 | export type OnlineHandler<Worker extends IWorker> = (this: Worker) => void |
| 23 | |
| 24 | /** |
| 25 | * Callback invoked when the worker exits successfully. |
| 26 | */ |
| 27 | export type ExitHandler<Worker extends IWorker> = ( |
| 28 | this: Worker, |
| 29 | code: number |
| 30 | ) => void |
| 31 | |
| 32 | /** |
| 33 | * Worker task interface. |
| 34 | */ |
| 35 | export interface Task<Data = unknown> { |
| 36 | /** |
| 37 | * Worker task data. |
| 38 | */ |
| 39 | data: Data |
| 40 | /** |
| 41 | * Task UUID. |
| 42 | */ |
| 43 | id: string |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Worker tasks usage statistics. |
| 48 | */ |
| 49 | export interface TasksUsage { |
| 50 | run: number |
| 51 | running: number |
| 52 | runTime: number |
| 53 | runTimeHistory: CircularArray<number> |
| 54 | avgRunTime: number |
| 55 | medRunTime: number |
| 56 | error: number |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Worker interface. |
| 61 | */ |
| 62 | export interface IWorker { |
| 63 | /** |
| 64 | * Register an event listener. |
| 65 | * |
| 66 | * @param event - The event. |
| 67 | * @param handler - The event listener. |
| 68 | */ |
| 69 | on: ((event: 'message', handler: MessageHandler<this>) => void) & |
| 70 | ((event: 'error', handler: ErrorHandler<this>) => void) & |
| 71 | ((event: 'online', handler: OnlineHandler<this>) => void) & |
| 72 | ((event: 'exit', handler: ExitHandler<this>) => void) |
| 73 | /** |
| 74 | * Register a listener to the exit event that will only performed once. |
| 75 | * |
| 76 | * @param event - `'exit'`. |
| 77 | * @param handler - The exit handler. |
| 78 | */ |
| 79 | once: (event: 'exit', handler: ExitHandler<this>) => void |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Worker node interface. |
| 84 | */ |
| 85 | export interface WorkerNode<Worker extends IWorker, Data = unknown> { |
| 86 | worker: Worker |
| 87 | tasksUsage: TasksUsage |
| 88 | tasksQueue: Array<Task<Data>> |
| 89 | } |