From 4ce755c86e737202ad1ceff564fae7cc561c0237 Mon Sep 17 00:00:00 2001
From: Esun Kim <veblush@google.com>
Date: Tue, 19 Jan 2021 15:45:20 -0800
Subject: [PATCH] Made update_mirror.sh skip the existing files

---
 bazel/update_mirror.sh | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/bazel/update_mirror.sh b/bazel/update_mirror.sh
index 4b754cf3a54..274fe51616e 100755
--- a/bazel/update_mirror.sh
+++ b/bazel/update_mirror.sh
@@ -34,13 +34,18 @@ trap cleanup EXIT
 function upload {
   local file="$1"
 
-  echo "Downloading https://${file}"
-  curl -L --fail --output "${tmpdir}/archive" "https://${file}"
+  if gsutil stat "gs://grpc-bazel-mirror/${file}" > /dev/null
+  then
+    echo "Skipping ${file}"
+  else
+    echo "Downloading https://${file}"
+    curl -L --fail --output "${tmpdir}/archive" "https://${file}"
 
-  echo "Uploading https://${file} to https://storage.googleapis.com/grpc-bazel-mirror/${file}"
-  gsutil cp -n "${tmpdir}/archive" "gs://grpc-bazel-mirror/${file}"  # "-n" will skip existing files
+    echo "Uploading https://${file} to https://storage.googleapis.com/grpc-bazel-mirror/${file}"
+    gsutil cp "${tmpdir}/archive" "gs://grpc-bazel-mirror/${file}"
 
-  rm -rf "${tmpdir}/archive"
+    rm -rf "${tmpdir}/archive"
+  fi
 }
 
 # How to check that all mirror URLs work: