#!/bin/bash
# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
#
# 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.

set -eu
set -o pipefail

cd /tmp/nova-agent
./installer.sh

cat > /etc/cloud/cloud.cfg.d/80_restart_network.cfg <<'EOF'
# Restart networking if it's got no IP. This is to catch if we're on RAX
# and the baked in dhcp config didn't work, but is now probably reconfigured
# by nova-agent
runcmd:
    - ip addr show eth0 | grep inet || ( ifdown -a ; ifup -a )
EOF

DIST=$(lsb_release -is)
[ -n "$DIST" ]
case $DIST in
    'Ubuntu'|'Debian')

    # cloud-init / nova-agent sad panda hacks
    cat > /etc/init/nova-agent.conf <<'EOF'
# nova-agent - start before cloud-init and hup network interfaces
start on starting cloud-init-local

task

console output

script
    /etc/init.d/nova-agent start
    sleep 13
    ifdown -a
    ifup -a
end script
EOF

    cat > /etc/init/xe-linux-distribution.conf <<'EOF'
# xe-linux-distribution - start the xentools before nova-agent runs
start on starting nova-agent

task

console output

script
    /etc/init.d/xe-linux-distribution start
    sleep 2
end script
EOF

    # stop nova-agent from starting twice since we start it from upstart now
    update-rc.d -f nova-agent remove
    update-rc.d -f xe-linux-distribution remove

    # console fix for PV Ubuntus
    cat > /etc/init/hvc0.conf <<'EOF'

# hvc0 - getty
#
# This service maintains a getty on hvc0 from the point the system is
# started until it is shut down again.

start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]

respawn
exec /sbin/getty -L 115200 hvc0 vt102
EOF
    ;;
    'Fedora'|'CentOS' | 'openSUSE project')

    cat > /usr/local/bin/run-nova-agent.sh <<'EOF'
#!/bin/bash
/etc/init.d/nova-agent start
sleep 13
ifdown -a
ifup -a
EOF
    chmod 0755 /usr/local/bin/run-nova-agent.sh

    cat > /usr/local/bin/run-xe-linux-distribution.sh <<'EOF'
#!/bin/bash
/etc/init.d/xe-linux-distribution start
sleep 2
EOF
    chmod 0755 /usr/local/bin/run-xe-linux-distribution.sh

    cat > /etc/systemd/system/nova-agent.service <<EOF
[Unit]
Description=Rackspace nova-agent
Before=cloud-init-local
Wants=cloud-init-local

[Service]
ExecStart=/usr/local/bin/run-nova-agent.sh

[Install]
WantedBy=multi-user.target
EOF

    cat > /etc/systemd/system/xe-linux-distribution.service <<'EOF'
[Unit]
Description=xentools agent
Before=nova-agent
Wants=nova-agent

[Service]
ExecStart=/usr/local/bin/run-xe-linux-distribution.sh

[Install]
WantedBy=multi-user.target
EOF
    # stop nova-agent from starting twice since we start it from systemd now
    chkconfig nova-agent off
    chkconfig xe-linux-distribution off

    systemctl enable nova-agent
    systemctl enable xe-linux-distribution
    ;;
esac