1 files changed, 22 insertions, 0 deletions
diff --git a/scripts/utils.sh b/scripts/utils.sh
index c71de666ac6..44bbabb4c99 100644
--- a/scripts/utils.sh
+++ b/scripts/utils.sh
@@ -10,6 +10,28 @@ function retry() {
       return 0
     fi
   done
+
+  return 1
+}
+
+# Retry after 2s, 4s, 8s, 16s, 32, 64s, 128s
+function retry_exponential() {
+  if eval "$@"; then
+    return 0
+  fi
+
+  local sleep_time=0
+  # The last try will be after 2**7 = 128 seconds (2min8s)
+  for i in 1 2 3 4 5 6 7; do
+    sleep_time=$((2 ** i))
+
+    echo "Sleep for $sleep_time seconds..."
+    sleep $sleep_time
+    echo "[$(date '+%H:%M:%S')] Attempt #$i..."
+    if eval "$@"; then
+      return 0
+    fi
+  done
   return 1
 }