Add initial config function and keystone support

Add set_configs function that implements the flow from the proposed
ansible-multi spec. Move start.sh to config-internal.sh to preserve existing
behaviour.

config-externall.sh copies the appropriate configs in from the bind'd
location and sets permissions and ownership appropriately.

Partially Implements: blueprint ansible-multi

Change-Id: I53fca0660451087f273fefc3c63e0d8cf1a2c096

1 files changed, 24 insertions, 0 deletions

diff --git a/docker/common/base/kolla-common.sh b/docker/common/base/kolla-common.sh
index 8c2ef5ec1..bd6a539a0 100644
--- a/docker/common/base/kolla-common.sh
+++ b/docker/common/base/kolla-common.sh
@@ -168,3 +168,27 @@ dump_vars() {
     set +o posix
 }
 
+set_configs() {
+    case $KOLLA_CONFIG_STRATEGY in
+        CONFIG_INTERNAL)
+            # exec is intentional to preserve existing behaviour
+            exec /opt/kolla/config-internal.sh
+            ;;
+        CONFIG_EXTERNAL_COPY_ALWAYS)
+            source /opt/kolla/config-exernal.sh
+            ;;
+        CONFIG_EXTERNAL_COPY_ONCE)
+            if [[ -f /configured ]]; then
+                echo 'INFO - This container has already been configured; Refusing to copy new configs'
+                return
+            fi
+            source /opt/kolla/config-exernal.sh
+            touch /configured
+            ;;
+
+        *)
+            echo '$CONFIG_STRATEGY is not set properly'
+            exit 1
+            ;;
+    esac
+}