build(deps): apply updates

[e-mobility-charging-stations-simulator.git] / src / worker / WorkerUtils.ts

diff --git a/src/worker/WorkerUtils.ts b/src/worker/WorkerUtils.ts
index 368d64f20585e0dfd737748bb64a6306e0e12405..776d7174c664f24a8d1e8bcb8ab59b5d3ee5706b 100644 (file)
--- a/src/worker/WorkerUtils.ts
+++ b/src/worker/WorkerUtils.ts
@@ -1,7 +1,9 @@
+import { getRandomValues } from 'node:crypto';
+
 import chalk from 'chalk';
 
 export const sleep = async (milliSeconds: number): Promise<NodeJS.Timeout> => {
-  return new Promise((resolve) => setTimeout(resolve as () => void, milliSeconds));
+  return new Promise<NodeJS.Timeout>((resolve) => setTimeout(resolve as () => void, milliSeconds));
 };
 
 export const defaultExitHandler = (code: number): void => {
@@ -15,5 +17,22 @@ export const defaultExitHandler = (code: number): void => {
 };
 
 export const defaultErrorHandler = (error: Error): void => {
-  console.error(chalk.red('Worker errored: ', error));
+  console.error(chalk.red('Worker errored: '), error);
+};
+
+export const randomizeDelay = (delay: number): number => {
+  const random = secureRandom();
+  const sign = random < 0.5 ? -1 : 1;
+  const randomSum = delay * 0.2 * random; // 0-20% of the delay
+  return delay + sign * randomSum;
+};
+
+/**
+ * Generates a cryptographically secure random number in the [0,1[ range
+ *
+ * @returns A number in the [0,1[ range
+ * @internal
+ */
+const secureRandom = (): number => {
+  return getRandomValues(new Uint32Array(1))[0] / 0x100000000;
 };