#!/bin/bash
#   Copyright 2016 Telefónica Investigación y Desarrollo S.A.U.
#
#   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.
#
# 20 Sep 2016 -- Gerardo Garcia -- adapted from template
#

HERE=$(realpath $(dirname $0))
OSM_JENKINS=$(dirname $HERE)
. $OSM_JENKINS/common/all_funcs

INFO "Installing packages"
add-apt-repository -y ppa:juju/stable
apt-get update
apt-get install -y juju lxd squid-deb-proxy

echo 'streams.canonical' > /etc/squid-deb-proxy/mirror-dstdomain.acl.d/20-juju-streams
service squid-deb-proxy reload

INFO "Configuring LXD"
# ZFS doesn't work inside a nested container. ZFS should be configured in the host LXD.
lxd init --auto
lxd waitready
systemctl stop lxd-bridge
systemctl --system daemon-reload
cat <<EOF > /etc/default/lxd-bridge
USE_LXD_BRIDGE="true"
LXD_BRIDGE="lxdbr0"
UPDATE_PROFILE="true"
LXD_CONFILE=""
LXD_DOMAIN="lxd"
LXD_IPV4_ADDR="10.44.127.1"
LXD_IPV4_NETMASK="255.255.255.0"
LXD_IPV4_NETWORK="10.44.127.1/24"
LXD_IPV4_DHCP_RANGE="10.44.127.2,10.44.127.254"
LXD_IPV4_DHCP_MAX="252"
LXD_IPV4_NAT="true"
LXD_IPV6_ADDR=""
LXD_IPV6_MASK=""
LXD_IPV6_NETWORK=""
LXD_IPV6_NAT="false"
LXD_IPV6_PROXY="false"
EOF

systemctl enable lxd-bridge
systemctl start lxd-bridge

DEFAULT_INTERFACE=$(route -n | awk '$1~/^0.0.0.0/ {print $8}')
DEFAULT_MTU=$( ip addr show $DEFAULT_INTERFACE | perl -ne 'if (/mtu\s(\d+)/) {print $1;}')

INFO "Setting lxdbr0 MTU to $DEFAULT_MTU"
ifconfig lxdbr0 mtu $DEFAULT_MTU

# Make the MTU change persistent between reboots
sed -i '/lxc list/d' /etc/rc.local
sed -i "$ i lxc list > /dev/null" /etc/rc.local
sed -i '/ifconfig lxdbr0 mtu/d' /etc/rc.local
sed -i "$ i ifconfig lxdbr0 mtu $DEFAULT_MTU" /etc/rc.local

# Enable the rc-local service so our changes get executed upon boot
systemctl enable rc-local.service

INFO "Pre-caching Ubuntu:16.04 image (this may take several minutes)..."

# Setup a daily cron to update the cached image
cp $HERE/update-lxd-image.sh /etc/cron.daily

# Run it for the first time
/etc/cron.daily/update-lxd-image.sh xenial

INFO "Bootstrapping VCA"
juju bootstrap localhost osm \
--config default-series=xenial \
--config enable-os-refresh-update=false \
--config enable-os-upgrade=false \
--config apt-http-proxy=http://10.44.127.1:8000

RC=0

INFO "done, RC=$RC"
exit $RC