-var-file="$CLOUDENV" \
-var-file="$platform_file" \
"templates/$PACKER_TEMPLATE.json"
+
+set -x
+# If this is a Gerrit system, check patch comments for successful verify build.
+if [[ -n ${GERRIT_URL:-} ]] && \
+ [[ -n ${GERRIT_CHANGE_NUMBER:-} ]] && \
+ [[ -n ${GERRIT_PATCHSET_NUMBER:-} ]] && \
+ curl -s "${GERRIT_URL}/changes/${GERRIT_CHANGE_NUMBER}/detail" \
+ | tail -n +2 | jq .messages[].message? \
+ | grep "Patch Set ${GERRIT_PATCHSET_NUMBER}:.*Build Successful.*verify-build-${PACKER_PLATFORM}-${PACKER_TEMPLATE}"
+then
+ echo "Build already successful for this patch set. Skipping merge build..."
+ exit
+# If this is Github, check the last non-merge commit for a successful Packer
+# Verify Build status.
+elif [[ "${GIT_BASE:-}" =~ https://github.com ]]; then
+ LAST_CHANGE_SHA=$(git log --no-merges -1 --format=%H)
+ API_BASE=$(echo "$GIT_BASE" | sed -E 's#(www.)?github.com#api.github.com/repos#')
+ STATUS=$(curl "${API_BASE}/statuses/${LAST_CHANGE_SHA}" \
+ | jq ".[] | select(.state == \"success\" and .context == \"Packer ${PACKER_PLATFORM}-${PACKER_TEMPLATE} Verify Build\")")
+ if [[ -n ${STATUS} ]]; then
+ echo "Build already successful for this patch set. Skipping merge build..."
+ exit
+ fi
+fi
+set +x
+
packer.io build -color=false \
-var-file="$CLOUDENV" \
-var-file="$platform_file" \