@srsl/tools/utils/waitForConnection.js

JavaScript tools for common interfaces

const sleep = require('./sleep')

module.exports = async ({
  attempts,
  interval,
  connect,
  onError,
}) => {
  if (attempts === undefined) attempts = Infinity
  if (interval === undefined) interval = 3000 /* ms */
  if (connect === undefined) connect = () => {}
  if (onError === undefined) {
    onError = (error) => {
      console.error('Connection error.', error)
      throw new Error('Failed to connect')
    }
  }
  if (attempts === 0) return onError()
  try {
    return connect()
  } catch (e) {
    console.log('onError: ', attempts)
    onError(e, attempts)
    await sleep(interval)
    return run(connectionString, attempts - 1, interval)
  }
}