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f06e48d8 JB |
1 | import type { CircularArray } from '../circular-array' |
2 | ||
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3 | /** |
4 | * Callback invoked if the worker has received a message. | |
5 | */ | |
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6 | export type MessageHandler<Worker extends IWorker> = ( |
7 | this: Worker, | |
8 | m: unknown | |
9 | ) => void | |
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10 | |
11 | /** | |
12 | * Callback invoked if the worker raised an error. | |
13 | */ | |
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14 | export type ErrorHandler<Worker extends IWorker> = ( |
15 | this: Worker, | |
16 | e: Error | |
17 | ) => void | |
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18 | |
19 | /** | |
20 | * Callback invoked when the worker has started successfully. | |
21 | */ | |
50e66724 | 22 | export type OnlineHandler<Worker extends IWorker> = (this: Worker) => void |
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23 | |
24 | /** | |
25 | * Callback invoked when the worker exits successfully. | |
26 | */ | |
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27 | export type ExitHandler<Worker extends IWorker> = ( |
28 | this: Worker, | |
29 | code: number | |
30 | ) => void | |
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31 | |
32 | /** | |
02706357 | 33 | * Message object that is passed as a task between main worker and worker. |
c319c66b JB |
34 | * |
35 | * @typeParam Data - Type of data sent to the worker. This can only be serializable data. | |
36 | * @internal | |
bdaf31cd | 37 | */ |
f06e48d8 | 38 | export interface Task<Data = unknown> { |
0274ce2d | 39 | /** |
d29bce7c | 40 | * Task input data that will be passed to the worker. |
0274ce2d | 41 | */ |
02706357 | 42 | readonly data?: Data |
0274ce2d | 43 | /** |
02706357 | 44 | * UUID of the message. |
0274ce2d | 45 | */ |
02706357 | 46 | readonly id?: string |
f06e48d8 JB |
47 | } |
48 | ||
49 | /** | |
50 | * Worker tasks usage statistics. | |
f9b4bbf8 JB |
51 | * |
52 | * @internal | |
f06e48d8 JB |
53 | */ |
54 | export interface TasksUsage { | |
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55 | /** |
56 | * Number of tasks executed. | |
57 | */ | |
f06e48d8 | 58 | run: number |
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59 | /** |
60 | * Number of tasks running. | |
61 | */ | |
f06e48d8 | 62 | running: number |
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63 | /** |
64 | * Tasks runtime. | |
65 | */ | |
f06e48d8 | 66 | runTime: number |
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67 | /** |
68 | * Tasks runtime history. | |
69 | */ | |
f06e48d8 | 70 | runTimeHistory: CircularArray<number> |
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71 | /** |
72 | * Average tasks runtime. | |
73 | */ | |
f06e48d8 | 74 | avgRunTime: number |
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75 | /** |
76 | * Median tasks runtime. | |
77 | */ | |
f06e48d8 | 78 | medRunTime: number |
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79 | /** |
80 | * Number of tasks errored. | |
81 | */ | |
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82 | error: number |
83 | } | |
84 | ||
85 | /** | |
86 | * Worker interface. | |
87 | */ | |
88 | export interface IWorker { | |
bdaf31cd | 89 | /** |
78cea37e | 90 | * Register an event listener. |
bdaf31cd | 91 | * |
38e795c1 JB |
92 | * @param event - The event. |
93 | * @param handler - The event listener. | |
bdaf31cd | 94 | */ |
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95 | on: ((event: 'message', handler: MessageHandler<this>) => void) & |
96 | ((event: 'error', handler: ErrorHandler<this>) => void) & | |
97 | ((event: 'online', handler: OnlineHandler<this>) => void) & | |
98 | ((event: 'exit', handler: ExitHandler<this>) => void) | |
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99 | /** |
100 | * Register a listener to the exit event that will only performed once. | |
101 | * | |
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102 | * @param event - `'exit'`. |
103 | * @param handler - The exit handler. | |
bdaf31cd | 104 | */ |
78cea37e | 105 | once: (event: 'exit', handler: ExitHandler<this>) => void |
bdaf31cd | 106 | } |
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107 | |
108 | /** | |
109 | * Worker node interface. | |
c319c66b JB |
110 | * |
111 | * @typeParam Worker - Type of worker. | |
112 | * @typeParam Data - Type of data sent to the worker. This can only be serializable data. | |
113 | * @internal | |
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114 | */ |
115 | export interface WorkerNode<Worker extends IWorker, Data = unknown> { | |
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116 | /** |
117 | * Worker node worker. | |
118 | */ | |
02706357 | 119 | readonly worker: Worker |
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120 | /** |
121 | * Worker node tasks usage statistics. | |
122 | */ | |
f06e48d8 | 123 | tasksUsage: TasksUsage |
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124 | /** |
125 | * Worker node tasks queue. | |
126 | */ | |
02706357 | 127 | readonly tasksQueue: Array<Task<Data>> |
f06e48d8 | 128 | } |