# lib/ceilometer
# Install and start Ceilometer service

# Dependencies:
# - functions

# stack.sh
# ---------
# install_XXX
# configure_XXX
# init_XXX
# start_XXX
# stop_XXX
# cleanup_XXX

# Print the commands being run so that we can see the command that triggers
# an error.  It is also useful for following along as the install occurs.
set -o xtrace


# Defaults
# --------

# set up default directories
CEILOMETER_DIR=$DEST/ceilometer
CEILOMETER_CONF_DIR=/etc/ceilometer
CEILOMETER_AGENT_CONF=$CEILOMETER_CONF_DIR/ceilometer-agent.conf
CEILOMETER_COLLECTOR_CONF=$CEILOMETER_CONF_DIR/ceilometer-collector.conf

# cleanup_ceilometer() - Remove residual data files, anything left over from previous
# runs that a clean run would need to clean up
function cleanup_ceilometer() {
    # This function intentionally left blank
    :
}

# configure_ceilometer() - Set config files, create data dirs, etc
function configure_ceilometer() {
    setup_develop $CEILOMETER_DIR
    if [ ! -d $CEILOMETER_CONF_DIR ]; then
        sudo mkdir -m 755 -p $CEILOMETER_CONF_DIR
    fi
    sudo chown `whoami` $CEILOMETER_CONF_DIR

    # ceilometer confs are copy of /etc/nova/nova.conf which must exist first
    grep -v format_string $NOVA_CONF_DIR/$NOVA_CONF > $CEILOMETER_AGENT_CONF
    grep -v format_string $NOVA_CONF_DIR/$NOVA_CONF > $CEILOMETER_COLLECTOR_CONF
}

# install_ceilometer() - Collect source and prepare
function install_ceilometer() {
    git_clone $CEILOMETER_REPO $CEILOMETER_DIR $CEILOMETER_BRANCH
}

# start_ceilometer() - Start running processes, including screen
function start_ceilometer() {
    screen_it ceilometer-acompute "cd $CEILOMETER_DIR && $CEILOMETER_DIR/bin/ceilometer-agent-compute --config-file $CEILOMETER_AGENT_CONF"
    screen_it ceilometer-acentral "cd $CEILOMETER_DIR && $CEILOMETER_DIR/bin/ceilometer-agent-central --config-file $CEILOMETER_AGENT_CONF"
    screen_it ceilometer-collector "cd $CEILOMETER_DIR && $CEILOMETER_DIR/bin/ceilometer-collector --config-file $CEILOMETER_COLLECTOR_CONF"
}