From 7e93698c9bc936657d314dfc2e264b01032c5a56 Mon Sep 17 00:00:00 2001
From: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Date: Thu, 29 Jun 2017 17:20:29 -0700
Subject: [PATCH] tag_release: Verify SDK version exists

Some releases may omit the SDK for expediency.
---
 tag_release | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tag_release b/tag_release
index ce2afba012..87c54461cf 100755
--- a/tag_release
+++ b/tag_release
@@ -71,6 +71,14 @@ if [[ "${FLAGS_sdk_version}" == "${BRANCH_VERSION}" ]]; then
         "Try --sdk_version keep to use the existing SDK."
 fi
 
+# Verify that the specified SDK version exists
+COREOS_SDK_VERSION="${FLAGS_sdk_version}"
+. "${SCRIPT_ROOT}/sdk_lib/sdk_util.sh"
+if ! curl --head --fail --silent "${COREOS_SDK_URL}" > /dev/null ; then
+    die_notrace "SDK version does not exist." \
+        "Try --sdk_version keep to use the existing SDK."
+fi
+
 sign_args=( -s )
 if [ -n "${FLAGS_signer}" ]; then
     sign_args=( -u "${FLAGS_signer}" )