| # lib/quantum | 
 | # functions - funstions specific to quantum | 
 |  | 
 | # Save trace setting | 
 | XTRACE=$(set +o | grep xtrace) | 
 | set +o xtrace | 
 |  | 
 | # Configures keystone integration for quantum service and agents | 
 | function quantum_setup_keystone() { | 
 |     local conf_file=$1 | 
 |     local section=$2 | 
 |     local use_auth_url=$3 | 
 |     if [[ -n $use_auth_url ]]; then | 
 |         iniset $conf_file $section auth_url "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_AUTH_HOST:$KEYSTONE_AUTH_PORT/v2.0" | 
 |     else | 
 |         iniset $conf_file $section auth_host $KEYSTONE_SERVICE_HOST | 
 |         iniset $conf_file $section auth_port $KEYSTONE_AUTH_PORT | 
 |         iniset $conf_file $section auth_protocol $KEYSTONE_SERVICE_PROTOCOL | 
 |     fi | 
 |     iniset $conf_file $section admin_tenant_name $SERVICE_TENANT_NAME | 
 |     iniset $conf_file $section admin_user $Q_ADMIN_USERNAME | 
 |     iniset $conf_file $section admin_password $SERVICE_PASSWORD | 
 | } | 
 |  | 
 | function quantum_setup_ovs_bridge() { | 
 |     local bridge=$1 | 
 |     for PORT in `sudo ovs-vsctl --no-wait list-ports $bridge`; do | 
 |         if [[ "$PORT" =~ tap* ]]; then echo `sudo ip link delete $PORT` > /dev/null; fi | 
 |         sudo ovs-vsctl --no-wait del-port $bridge $PORT | 
 |     done | 
 |     sudo ovs-vsctl --no-wait -- --if-exists del-br $bridge | 
 |     sudo ovs-vsctl --no-wait add-br $bridge | 
 |     sudo ovs-vsctl --no-wait br-set-external-id $bridge bridge-id $bridge | 
 | } | 
 |  | 
 | # Restore xtrace | 
 | $XTRACE |