From dd2610207b0c420188a1cdab4faa993039a74c9f Mon Sep 17 00:00:00 2001
From: Monty Taylor <mordred@inaugust.com>
Date: Tue, 7 Apr 2020 13:24:56 -0500
Subject: [PATCH] Check to make sure artifact has a url

Before we fetch it, it needs to exist, otherwise we core-dump.

Change-Id: I086a706c70807bc547b286b0f587a27f9f19d38e
---
 zuul-preview/main.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/zuul-preview/main.cc b/zuul-preview/main.cc
index 848fb55..e5aeff7 100644
--- a/zuul-preview/main.cc
+++ b/zuul-preview/main.cc
@@ -169,7 +169,8 @@ int main(int, char**)
       for (uint i = 0; i < artifacts.size(); i++) {
         if (artifacts[i].has_field("metadata") &&
             artifacts[i]["metadata"].has_field("type") &&
-            artifacts[i]["metadata"]["type"].as_string() == artifact) {
+            artifacts[i]["metadata"]["type"].as_string() == artifact &&
+            artifacts[i].has_field("url")) {
           artifact_url = artifacts[i]["url"].as_string();
         }
       }