From 558748dab27377c4bf3d79d1f733b0579d9e9e05 Mon Sep 17 00:00:00 2001
From: "Zaiming (Stone) Shi" <zmstone@gmail.com>
Date: Wed, 2 Mar 2022 19:36:30 +0100
Subject: [PATCH] build(update_appup): only download package if not exist

---
 scripts/update_appup.escript | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/scripts/update_appup.escript b/scripts/update_appup.escript
index 5bc709267..b12012719 100755
--- a/scripts/update_appup.escript
+++ b/scripts/update_appup.escript
@@ -171,9 +171,11 @@ download_prev_release(Tag, #{binary_rel_url := {ok, URL0}, clone_url := Repo}) -
     BaseDir = "/tmp/emqx-baseline-bin/",
     Dir = filename:basename(Repo, ".git") ++ [$-|Tag],
     Filename = filename:join(BaseDir, Dir),
-    Script = "echo \"Download: ${OUTFILE}\" &&
-              mkdir -p ${OUTFILE} &&
-              curl -f -L -o ${OUTFILE}.zip ${URL} &&
+    Script = "mkdir -p ${OUTFILE} &&
+              if [ ! -f \"${OUTFILE}.zip\" ]; then \
+                echo \"Download: ${OUTFILE}\" && \
+                curl -f -L -o \"${OUTFILE}.zip\" \"${URL}\"; \
+              fi &&
               unzip -q -n -d ${OUTFILE} ${OUTFILE}.zip",
     Env = [{"TAG", Tag}, {"OUTFILE", Filename}, {"URL", URL}],
     bash(Script, Env),