postinst

#!/bin/sh

set -e

. /usr/share/debconf/confmodule
db_version 2.0

if [ -f /usr/share/dbconfig-common/dpkg/postinst.pgsql ]; then
    . /usr/share/dbconfig-common/dpkg/postinst.pgsql
fi

RELEASE=`lsb_release -rs` || RELEASE=""

maas_sync_migrate_db(){
    maas-region dbupgrade
}

restart_postgresql(){
    invoke-rc.d --force postgresql restart || true
}

configure_maas_default_url() {
    local ipaddr="$1"
    maas-region local_config_set \
        --maas-url "http://${ipaddr}/MAAS"
}

get_default_route_ip() {
    while read Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
    do
        [ "$Mask" = "00000000" ] && break
    done < /proc/net/route
    interface="$Iface"
    ipaddr=$(LC_ALL=C /sbin/ip -4 addr list dev "$interface" scope global)
    ipaddr=${ipaddr#* inet }
    ipaddr=${ipaddr%%/*}
    echo $ipaddr
}

extract_default_maas_url() {
    # Extract DEFAULT_MAAS_URL IP/host setting from config file $1.
    grep "^DEFAULT_MAAS_URL" "$1" | cut -d"/" -f3
}

configure_migrate_maas_dns() {
    # This only runs on upgrade. We only run this if the
    # there are forwarders to migrate or no
    # named.conf.options.inside.maas are present.
    maas-region edit_named_options \
        --migrate-conflicting-options --config-path \
        /etc/bind/named.conf.options
    invoke-rc.d bind9 restart || true
}

if [ "$1" = "configure" ] && [ -z "$2" ]; then
    #########################################################
    ##########  Configure DEFAULT_MAAS_URL  #################
    #########################################################

    # Obtain IP address of default route and change DEFAULT_MAAS_URL
    # if default-maas-url has not been preseeded.
    db_get maas/default-maas-url
    ipaddr="$RET"
    if [ -z "$RET" ]; then
        ipaddr=$(get_default_route_ip)
    fi
    # Set the IP address of the interface with default route
    if [ -n "$ipaddr" ]; then
        configure_maas_default_url "$ipaddr"
        db_subst maas/installation-note MAAS_URL "$ipaddr"
        db_set maas/default-maas-url "$ipaddr"
    fi

    #########################################################
    ################  Configure Database  ###################
    #########################################################

    # Need to for postgresql start so it doesn't fail on the installer
    restart_postgresql

    # Create the database
    dbc_go maas-region-controller $@
    maas-region local_config_set \
        --database-host "localhost" --database-name "$dbc_dbname" \
        --database-user "$dbc_dbuser" --database-pass "$dbc_dbpass"

    # Only syncdb if we have selected to install it with dbconfig-common.
    db_get maas-region-controller/dbconfig-install
    if [ "$RET" = "true" ]; then
        maas_sync_migrate_db
        configure_migrate_maas_dns
    fi

    db_get maas/username
    username="$RET"
    if [ -n "$username" ]; then
        db_get maas/password
        password="$RET"
        if [ -n "$password" ]; then
            maas-region createadmin --username "$username" --password "$password" --email "$username@maas"
        fi
    fi

    # Display installation note
    db_input low maas/installation-note || true
    db_go

elif [ -n "$DEBCONF_RECONFIGURE" ]; then
    # Set the IP address of the interface with default route
    db_get maas/default-maas-url
    ipaddr="$RET"
    if [ -n "$ipaddr" ]; then
        configure_maas_default_url "$ipaddr"
    fi

elif [ "$1" = "configure" ] && dpkg --compare-versions "$2" gt 0.1+bzr266+dfsg-0ubuntu1; then
    # If upgrading to any later package version, then upgrade db.
    invoke-rc.d apache2 stop || true

    # make sure postgresql is running
    restart_postgresql

    # If the version we are upgrading from ("$2") is less than
    # 1.9.0~alpha1+bzr4038-0ubuntu1 then we need migrate to new
    # config file.
    if dpkg --compare-versions "$2" lt 1.9.0~alpha1+bzr4038-0ubuntu1 && [ -f /etc/maas/maas_local_settings.py ]; then
        ipaddr=$(extract_default_maas_url /etc/maas/maas_local_settings.py)
        if [ -n "$ipaddr" ]; then
            configure_maas_default_url "$ipaddr"
            db_set maas/default-maas-url "$ipaddr"
        fi
        # handle database upgrade
        if [ -f /etc/dbconfig-common/maas-region-controller.conf ]; then
            # source dbconfig-common db config for maas-region-controller
            # before upgrading database, otherwise a new config is written
            # but the password is no longer preserved.
            . /etc/dbconfig-common/maas-region-controller.conf
        else
            dbc_go maas-region-controller $@
        fi

        # Reconfigure the config file.
        maas-region local_config_set \
            --database-host "localhost" --database-name "$dbc_dbname" \
            --database-user "$dbc_dbuser" --database-pass "$dbc_dbpass"

        mv /etc/maas/maas_local_settings.py /etc/maas/maas_local_settings.py.maas-old
    fi

    maas_sync_migrate_db

    configure_migrate_maas_dns
fi

systemctl enable maas-regiond >/dev/null || true
systemctl restart maas-regiond >/dev/null || true
invoke-rc.d apache2 restart || true

if [ -f /lib/systemd/system/maas-rackd.service ]; then
    systemctl restart maas-rackd >/dev/null || true
fi

db_stop
maas-region-controller 2.0.0~beta3+bzr4941-0ubuntu1 / postinst
