From 1363daae3c2ea9c4e2baa33162e8683ea7e20675 Mon Sep 17 00:00:00 2001
From: Rohan Mitchell <rohan@rohanmitchell.com>
Date: Fri, 26 Jun 2015 11:22:19 +1000
Subject: [PATCH] When fetching ofn commit, if it is not found, return a
 sentinal value to avoid a wayward git push

---
 script/ci/includes.sh | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/script/ci/includes.sh b/script/ci/includes.sh
index 497959d33b..a0599504c2 100644
--- a/script/ci/includes.sh
+++ b/script/ci/includes.sh
@@ -25,7 +25,17 @@ function set_ofn_commit {
 }
 
 function get_ofn_commit {
-    echo `buildkite-agent meta-data get "openfoodnetwork:git:commit"`
+    OFN_COMMIT=`buildkite-agent meta-data get "openfoodnetwork:git:commit"`
+
+    # If we don't catch this failure case, push will execute:
+    # git push remote :master --force
+    # Which will delete the master branch on the server
+
+    if [[ `expr length "$OFN_COMMIT"` == 0 ]]; then
+        echo 'OFN_COMMIT_NOT_FOUND'
+    else
+        echo $OFN_COMMIT
+    fi
 }
 
 function checkout_ofn_commit {