From a3ceb5943319b4c09695be51ac146dd3bddddfad Mon Sep 17 00:00:00 2001
From: Jun Aruga <jaruga@redhat.com>
Date: Mon, 2 Sep 2019 15:13:32 +0200
Subject: [PATCH] Add an error handing logic when qemu-$arch-statis.tar.gz URL
 is not found.

---
 update.sh | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/update.sh b/update.sh
index d1304b0..7325791 100755
--- a/update.sh
+++ b/update.sh
@@ -49,8 +49,13 @@ for to_arch in $to_archs; do
     if [ "$from_arch" != "$to_arch" ]; then
         work_dir="${out_dir}/${from_arch}_qemu-${to_arch}"
         mkdir -p "${work_dir}"
-        curl -sSL -o "${work_dir}/${from_arch}_qemu-${to_arch}-static.tar.gz" \
-            "https://github.com/${REPO}/releases/download/v${VERSION}/${from_arch}_qemu-${to_arch}-static.tar.gz"
+        tar_gz_url="https://github.com/${REPO}/releases/download/v${VERSION}/${from_arch}_qemu-${to_arch}-static.tar.gz"
+        http_status="$(curl -s -o /dev/null -w "%{http_code}" "${tar_gz_url}")"
+        if [ "${http_status}" = 404 ]; then
+            echo "URL not found: ${tar_gz_url}" 1>&2
+            exit 1
+        fi
+        curl -sSL -o "${work_dir}/${from_arch}_qemu-${to_arch}-static.tar.gz" "${tar_gz_url}"
         tar xzvf "${work_dir}/${from_arch}_qemu-${to_arch}-static.tar.gz" -C "${work_dir}"
         rm -f "${work_dir}/${from_arch}_qemu-${to_arch}-static.tar.gz"