# functions - Grenade-specific functions
#
# The following variables are assumed to be defined by certain functions:
#
# - ``MYSQL_PASSWORD``
# - ``SAVE_DIR``


# Include the common functions
FUNC_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
source ${FUNC_DIR}/functions-common

# Save trace setting
XTRACE=$(set +o | grep xtrace)
set +o xtrace

# save_data() dumps service datastores into SAVE_DIR for base or
# target release.
function save_data {
    local release=$1
    local dir=$2
    local mysql_services="keystone glance nova cinder ironic"

    echo_summary "Sourcing $release DevStack config"
    source $dir/functions
    source $dir/stackrc
    echo_summary "Dumping $release databases"
    mkdir -p $SAVE_DIR
    if grep -q 'connection *= *mysql' /etc/ceilometer/ceilometer.conf; then
        mysql_services+=" ceilometer"
    elif grep -q 'connection *= *mongo' /etc/ceilometer/ceilometer.conf; then
        mongodump --db ceilometer --out $SAVE_DIR/ceilometer-dump.$release
    fi
    for db in $mysql_services ; do
        if mysql -uroot -p$MYSQL_PASSWORD -c $db -e ''; then
            mysqldump -uroot -p$MYSQL_PASSWORD $db >$SAVE_DIR/$db.sql.$release
        fi
    done
    neutron_db_names=$(mysql -uroot -p$MYSQL_PASSWORD -e "show databases;" | grep neutron || :)
    for neutron_db in $neutron_db_names; do
        mysqldump -uroot -p$MYSQL_PASSWORD $neutron_db >$SAVE_DIR/$neutron_db.sql.$release
    done
}


# This function triggers the upgrade process for each project if it exists,
# otherwise it shows up a warning message about the lack of this file.
function upgrade_project {
    # NOTE(maurosr): Ideally in a new upgrade test right after a release no new
    # configuration is need, so we can go on without the from-<release> directory.
    # This is also useful due to cross dependencie between d-g and grenade when
    # enabling grenade to run a an upgrade between a new pair of releases.

    project=$1
    base_dir=$2
    base_branch=$3
    target_branch=$4

    if [[ "$base_branch" == "$target_branch" ]]; then
        direction="within"
    else
        direction="from"
    fi

    upgrade_dir=$(get_release_name_from_branch $base_branch)
    upgrade_file=${base_dir}/${direction}"-"${upgrade_dir}/"upgrade-"${project}
    if [[ -e ${upgrade_file} ]]; then
        source ${upgrade_file} && configure_${project}_upgrade
    else
        echo "Warning: No new configurations were found for OpenStack $project."
        echo "If your patch fails during the upgrade this may be the cause."
    fi
}

# Restore xtrace
$XTRACE