| 1 | import { AsyncOptionalCreatable, Duration } from '@salesforce/kit';
|
| 2 | import { AnyJson } from '@salesforce/ts-types';
|
| 3 | import { Logger } from '../logger';
|
| 4 | import { StatusResult } from './types';
|
| 5 | /**
|
| 6 | * This is a polling client that can be used to poll the status of long running tasks. It can be used as a replacement
|
| 7 | * for Streaming when streaming topics are not available or when streaming handshakes are failing. Why wouldn't you
|
| 8 | * want to use this? It can impact Salesforce API usage.
|
| 9 | *
|
| 10 | * ```
|
| 11 | * const options: PollingClient.Options = {
|
| 12 | * async poll(): Promise<StatusResult> {
|
| 13 | * return Promise.resolve({ completed: true, payload: 'Hello World' });
|
| 14 | * },
|
| 15 | * frequency: Duration.milliseconds(10),
|
| 16 | * timeout: Duration.minutes(1)
|
| 17 | * };
|
| 18 | * const client = await PollingClient.create(options);
|
| 19 | * const pollResult = await client.subscribe();
|
| 20 | * console.log(`pollResult: ${pollResult}`);
|
| 21 | * ```
|
| 22 | */
|
| 23 | export declare class PollingClient extends AsyncOptionalCreatable<PollingClient.Options> {
|
| 24 | protected logger: Logger;
|
| 25 | private options;
|
| 26 | /**
|
| 27 | * Constructor
|
| 28 | *
|
| 29 | * @param options Polling client options
|
| 30 | * @ignore
|
| 31 | */
|
| 32 | constructor(options?: PollingClient.Options);
|
| 33 | /**
|
| 34 | * Asynchronous initializer.
|
| 35 | */
|
| 36 | init(): Promise<void>;
|
| 37 | /**
|
| 38 | * Returns a promise to call the specified polling function using the interval and timeout specified
|
| 39 | * in the polling options.
|
| 40 | */
|
| 41 | subscribe<T = AnyJson>(): Promise<T>;
|
| 42 | }
|
| 43 | export declare namespace PollingClient {
|
| 44 | /**
|
| 45 | * Options for the polling client.
|
| 46 | */
|
| 47 | interface Options {
|
| 48 | /**
|
| 49 | * Polling function.
|
| 50 | */
|
| 51 | poll: () => Promise<StatusResult>;
|
| 52 | /**
|
| 53 | * How frequent should the polling function be called.
|
| 54 | */
|
| 55 | frequency: Duration;
|
| 56 | /**
|
| 57 | * Hard timeout for polling.
|
| 58 | */
|
| 59 | timeout: Duration;
|
| 60 | /**
|
| 61 | * Change the name of the timeout error.
|
| 62 | *
|
| 63 | * ```
|
| 64 | * if (err.name === 'MyChangedName) ...
|
| 65 | * ```
|
| 66 | */
|
| 67 | timeoutErrorName?: string;
|
| 68 | }
|
| 69 | /**
|
| 70 | * Default options set for polling. The default options specify a timeout of 3 minutes and polling frequency of 15
|
| 71 | * seconds;
|
| 72 | */
|
| 73 | class DefaultPollingOptions implements PollingClient.Options {
|
| 74 | frequency: Duration;
|
| 75 | poll: () => Promise<StatusResult>;
|
| 76 | timeout: Duration;
|
| 77 | /**
|
| 78 | * constructor
|
| 79 | *
|
| 80 | * @param poll The function used for polling status.
|
| 81 | * {@link StatusResult}
|
| 82 | */
|
| 83 | constructor(poll: () => Promise<StatusResult>);
|
| 84 | }
|
| 85 | }
|