Shuffle servers when checking available jobs

To not favour a specific instance

1 files changed, 14 insertions, 0 deletions

diff --git a/shared/core-utils/common/array.ts b/shared/core-utils/common/array.ts
index e1b422165..878ed1ffe 100644
--- a/shared/core-utils/common/array.ts
+++ b/shared/core-utils/common/array.ts
@@ -20,8 +20,22 @@ function uniqify <T> (elements: T[]) {
   return Array.from(new Set(elements))
 }
 
+// Thanks: https://stackoverflow.com/a/12646864
+function shuffle <T> (elements: T[]) {
+  const shuffled = [ ...elements ]
+
+  for (let i = shuffled.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+
+    [ shuffled[i], shuffled[j] ] = [ shuffled[j], shuffled[i] ]
+  }
+
+  return shuffled
+}
+
 export {
   uniqify,
   findCommonElement,
+  shuffle,
   arrayify
 }