From 83b82dc6b8d5e382bdab745f8ffe138240be110d Mon Sep 17 00:00:00 2001
From: Maru Newby <marun@redhat.com>
Date: Sat, 14 Feb 2015 05:18:23 +0000
Subject: [PATCH] Allow PROJECTS to be overridden

Updating the default set of project repositories at the start of each
dsvm job adds 3-5m to the job's runtime.  For jobs that target only a
small subset of those repos, that overhead is largely unnecessary.  To
minimize the overhead of workspace setup, this change allows the
target project repositories (PROJECTS) to be overridden on a per-job
basis via the DEVSTACK_GATE_PROJECTS_OVERRIDE variable.

Change-Id: I0fb1bef66d82acdddeb9b29956fdd4311ea1f277
---
 devstack-vm-gate-wrap.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/devstack-vm-gate-wrap.sh b/devstack-vm-gate-wrap.sh
index bda94a90..998caf69 100755
--- a/devstack-vm-gate-wrap.sh
+++ b/devstack-vm-gate-wrap.sh
@@ -357,6 +357,16 @@ export DEVSTACK_GATE_CEILOMETER_BACKEND=${DEVSTACK_GATE_CEILOMETER_BACKEND:-mysq
 # Set Zaqar backend to override the default one. It could be mongodb, redis.
 export DEVSTACK_GATE_ZAQAR_BACKEND=${DEVSTACK_GATE_ZAQAR_BACKEND:-mongodb}
 
+# Set to a space-separated list of projects to prepare in the
+# workspace, e.g. 'openstack-dev/devstack openstack/neutron'.
+# Minimizing the number of targeted projects can reduce the setup cost
+# for jobs that know exactly which repos they need.
+export DEVSTACK_GATE_PROJECTS_OVERRIDE=${DEVSTACK_GATE_PROJECTS_OVERRIDE:-""}
+
+if [ -n "$DEVSTACK_GATE_PROJECTS_OVERRIDE" ]; then
+    PROJECTS=$DEVSTACK_GATE_PROJECTS_OVERRIDE
+fi
+
 if ! function_exists "gate_hook"; then
     # the command we use to run the gate
     function gate_hook {