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


# Include the common functions
GRENADE_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
source ${TARGET_DEVSTACK_DIR}/functions
source ${GRENADE_DIR}/inc/upgrade
source ${GRENADE_DIR}/inc/plugin

# 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
    echo_summary "Dumping $release databases"
    mkdir -p $SAVE_DIR
    save_mysql_dbs $release $dir

    # TODO(sdague): this should go into per project save-state scripts
    if grep -q 'connection *= *mongo' /etc/ceilometer/ceilometer.conf; then
        mongodump --db ceilometer --out $SAVE_DIR/ceilometer-dump.$release
    fi
}


# Setup Exit Traps for debug purposes
trap exit_trap EXIT
function exit_trap {
    # really important that this is the *first* line in this
    # function, otherwise we corrupt the exit code
    local r=$?
    # we don't need tracing during this
    set +o xtrace
    if [[ $r -ne 0 ]]; then
        # unwind the call stack on failures
        local frame=0
        while caller $frame; do
            ((frame++));
        done

        echo "Exit code: $r"
        if [[ -x $TARGET_DEVSTACK_DIR/tools/worlddump.py ]]; then
            $TARGET_DEVSTACK_DIR/tools/worlddump.py -d $LOGDIR
            sleep 1
        fi
    fi
    exit $r
}


# Restore xtrace
$XTRACE