@actyx/sdk/lib/util/reconnectStrategies.js

Actyx SDK

"use strict";
/*
 * Actyx SDK: Functions for writing distributed apps
 * deployed on peer-to-peer networks, without any servers.
 *
 * Copyright (C) 2021 Actyx AG
 */
/* eslint-disable @typescript-eslint/no-explicit-any */
Object.defineProperty(exports, "__esModule", { value: true });
const rxjs_1 = require("../../node_modules/rxjs");
const operators_1 = require("../../node_modules/rxjs/operators");
function logReconnectAttempt(delayMs, attempt, name) {
    // Don't log during test runs
    if (typeof jest !== 'undefined') {
        return;
    }
    console.info('Connection issue %s, will retry in %d s (Attempt: %d).', name, delayMs / 1000, attempt);
}
const retry = (config) => (e) => {
    const delayMs = (config && config.delayMs) || 1000;
    const name = (config && config.name && ` connecting to ${config.name}`) || '';
    const attempts = config && config.attempts;
    if (attempts && attempts > 0) {
        return e.pipe((0, operators_1.map)((v, i) => {
            const attempt = i + 1;
            if (attempt > attempts)
                throw new Error(`Giving up after ${attempts} retries!`);
            logReconnectAttempt(delayMs, attempt, name);
            return v;
        }), (0, operators_1.delay)(delayMs));
    }
    return e.pipe((0, operators_1.delay)(delayMs));
};
const exponentialBackoff = (config) => (e) => {
    const minDelay = (config && config.minDelay) || 1000;
    const maxDelay = (config && config.maxDelay) || 60000;
    const attempts = (config && config.attempts) || 0;
    const name = (config && config.name && ` connecting to ${config.name}`) || '';
    return e.pipe((0, operators_1.mergeMap)((v, i) => {
        const attempt = i + 1;
        if (attempts > 0 && attempt > attempts) {
            throw new Error(`Giving up after ${attempts} retries!`);
        }
        const delayMs = Math.min(minDelay * 2 ** (attempt - 1), maxDelay);
        logReconnectAttempt(delayMs, attempt, name);
        return (0, rxjs_1.of)(v).pipe((0, operators_1.delay)(delayMs));
    }));
};
const reconnectStrategies = {
    exponentialBackoff,
    retry,
};
exports.default = reconnectStrategies;
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