@house-agency/brewtils/retry.js

The Brewery Node.js Utilities (brewtils)

const format = require('util').format;
const log = require('./log');
const q = require('q');

const defaults = {
    maximum_retries: 10,
    delay: 100
};

function retry(func, maximum_retries, delay, filter_error_cb) {
    if (!maximum_retries) {
        maximum_retries = defaults.maximum_retries;
    }

    if (!delay) {
        delay = defaults.delay;
    }

    const retry_func = (retry_count) => func()
    .catch(error => {

        if(filter_error_cb && !filter_error_cb(error))
            throw error;

        log(
            'error',
            'Error when invoking',
            func.name,
            format('Retrying %d of %d', retry_count, maximum_retries),
            error
        );

        if (retry_count < maximum_retries) {
            return q.delay(delay)
                   .then(() => retry_func(retry_count + 1));
        }

        throw error;
    });

    return retry_func(1);
}

const wrapper = Object.assign(
    retry,
    {}
);

module.exports = wrapper;