export async function runRoundTrips()

in modules/example-node/hkr-demo/hkr.ts [56:132]
61 lines of code
4 McCabe index (conditional complexity)

export async function runRoundTrips(
  keyring: KeyringNode,
  numRoundTrips: number
) {
  // set up spies to monitor network call volume
  const kmsSpy = sinon.spy(KMSClient.prototype, 'send')
  const ddbSpy = sinon.spy(DynamoDBClient.prototype, 'send')
  const padding = String(numRoundTrips).length
  let successes = 0

  console.log()
  console.log(YELLO_LOG, `${keyring.constructor.name} Roundtrips`) // Print constructor name in yellow
  console.time('Total runtime') // Start the timer

  // for each roundtrip
  for (let i = 0; i < numRoundTrips; i++) {
    // create an encryption context
    const encryptionContext = {
      roundtrip: i.toString(),
    }
    // generate a random string
    const encryptionInput = generateRandomString(
      MIN_INPUT_LENGTH,
      MAX_INPUT_LENGTH
    )

    // try to do the roundtrip. If any error arises, log it properly
    let decryptionOutput: string
    try {
      const { plaintext } = await roundtrip(
        keyring,
        encryptionContext,
        encryptionInput
      )
      decryptionOutput = plaintext.toString()
    } catch {
      decryptionOutput = 'ERROR'
    }

    const encryptionInputPadding = ' '.repeat(
      MAX_INPUT_LENGTH - encryptionInput.length
    )
    const decryptionOutputPadding = ' '.repeat(
      MAX_INPUT_LENGTH - decryptionOutput.length
    )

    // log message
    const logMessage = `Roundtrip ${String(i + 1).padStart(
      padding,
      ' '
    )}: ${encryptionInput}${encryptionInputPadding} ----encrypt & decrypt----> ${decryptionOutput}${decryptionOutputPadding}`

    // print the log green if successful. Otherwise, red
    let logColor: string
    if (encryptionInput === decryptionOutput) {
      logColor = GREEN_LOG
      successes += 1
    } else {
      logColor = RED_LOG
    }
    console.log(logColor, logMessage)
  }

  // print metrics for runtime and call volume
  console.log()
  console.log(YELLO_LOG, `${keyring.constructor.name} metrics`) // Print constructor name in yellow
  console.timeEnd('Total runtime')
  console.log(PURPLE_LOG, `KMS calls: ${kmsSpy.callCount}`)
  console.log(PURPLE_LOG, `DynamoDB calls: ${ddbSpy.callCount}`)
  console.log(
    PURPLE_LOG,
    `Successful roundtrips: ${successes} / ${numRoundTrips}`
  )

  kmsSpy.restore()
  ddbSpy.restore()
}