@ingestkorea/client-sens/dist-es/middleware/middleware-retry.js

INGESTKOREA SDK Naver Cloud Platform SENS Client for Node.js.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.middlewareRetry = void 0;
const index_js_1 = require("../models/index.js");
const constants_js_1 = require("./constants.js");
const middlewareRetry = (next) => async (input, context) => {
    const MAX_RETRIES = 3;
    const MIN_DELAY_MS = 300;
    const BASE_DELAY_MS = 500;
    const MAX_DELAY_MS = 5000;
    let attempts = 0;
    let totalRetryDelay = 0;
    input.request.headers = {
        ...input.request.headers,
    };
    while (attempts < MAX_RETRIES) {
        attempts++;
        const requestLog = `attempt=${attempts}; max=${MAX_RETRIES}; totalRetryDelay=${totalRetryDelay}`;
        input.request.headers[constants_js_1.INGESTKOREA_REQUEST_LOG] = requestLog;
        try {
            const { response } = await next(input, context);
            response.headers[constants_js_1.INGESTKOREA_RETRY] = attempts.toString();
            response.headers[constants_js_1.INGESTKOREA_RETRY_DELAY] = totalRetryDelay.toString();
            return { response };
        }
        catch (error) {
            if (attempts >= MAX_RETRIES) {
                throw new index_js_1.SensError({
                    code: -1,
                    type: "SDK.REQUEST_ERROR",
                    message: error instanceof Error ? error.message : requestLog,
                });
            }
            const exp = BASE_DELAY_MS * 2 ** (attempts - 1);
            const capped = Math.min(MAX_DELAY_MS, exp);
            const baseWait = Math.max(MIN_DELAY_MS, Math.floor(capped / 2));
            const jitter = Math.floor(Math.random() * (capped - baseWait));
            const delay = baseWait + jitter;
            totalRetryDelay += delay;
            await new Promise((resolve) => setTimeout(resolve, delay));
        }
    }
    throw new index_js_1.SensError({
        code: -1,
        type: "SDK.UNKNOWN_ERROR",
        message: "Unexpected retry loop termination",
    });
};
exports.middlewareRetry = middlewareRetry;