#!/bin/bash

# Copyright 2017-present Open Networking Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

function mac_to_iface {
    MAC=$1
    ifconfig|grep $MAC| awk '{print $1}'|grep -v '\.'
}

iptables -L > /dev/null
ip6tables -L > /dev/null

STAG={{ s_tags[0] }}
CTAG={{ c_tags[0] }}
VEG=veg-$STAG-$CTAG

docker inspect $VEG > /dev/null 2>&1
if [ "$?" == 1 ]
then
    docker pull andybavier/docker-veg
    docker run -d --name=$VEG --privileged=true --net=none -v /etc/$VEG/dnsmasq.d:/etc/dnsmasq.d andybavier/docker-veg
else
    docker start $VEG
fi

# Set up networking via pipework
WAN_IFACE=$( mac_to_iface {{ wan_mac }} )
docker exec $VEG ifconfig eth0 >> /dev/null || pipework $WAN_IFACE -i eth0 $VEG {{ wan_ip }}/24@{{ wan_next_hop }} {{ wan_container_mac }}

# LAN_IFACE=$( mac_to_iface {{ lan_mac }} )
# Need to encapsulate VLAN traffic so that Neutron doesn't eat it
# Assumes that br-lan has been set up appropriately by a previous step
LAN_IFACE=br-lan
ifconfig $LAN_IFACE >> /dev/null
if [ "$?" == 0 ]
then
    ifconfig $LAN_IFACE.$STAG >> /dev/null || ip link add link $LAN_IFACE name $LAN_IFACE.$STAG type vlan id $STAG
    ifconfig $LAN_IFACE.$STAG up
    docker exec $VEG ifconfig eth1 >> /dev/null || pipework $LAN_IFACE.$STAG -i eth1 $VEG 192.168.0.1/24 @$CTAG
fi

#HPC_IFACE=$( mac_to_iface {{ hpc_client_mac }} )
#docker exec $VEG ifconfig eth2 >> /dev/null || pipework $HPC_IFACE -i eth2 $VEG {{ hpc_client_ip }}/24

# Make sure VM's eth0 (hpc_client) has no IP address
#ifconfig $HPC_IFACE 0.0.0.0

# Now can start up dnsmasq
docker exec $VEG service dnsmasq start

# Attach to container
docker start -a $VEG
