# lib/ironic
# Functions to control the configuration and operation of the **Ironic** service

# Dependencies:
# ``functions`` file
# ``DEST``, ``DATA_DIR``, ``STACK_USER`` must be defined
# ``SERVICE_{TENANT_NAME|PASSWORD}`` must be defined
# ``SERVICE_HOST``
# ``KEYSTONE_TOKEN_FORMAT`` must be defined

# ``stack.sh`` calls the entry points in this order:
#
# install_ironic
# configure_ironic
# init_ironic
# start_ironic
# stop_ironic
# cleanup_ironic

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


# Defaults
# --------

# Set up default directories
IRONIC_DIR=$DEST/ironic
IRONIC_AUTH_CACHE_DIR=${IRONIC_AUTH_CACHE_DIR:-/var/cache/ironic}
IRONIC_CONF_DIR=${IRONIC_CONF_DIR:-/etc/ironic}
IRONIC_CONF_FILE=$IRONIC_CONF_DIR/ironic.conf
IRONIC_ROOTWRAP_CONF=$IRONIC_CONF_DIR/rootwrap.conf
IRONIC_ROOTWRAP_FILTERS=$IRONIC_CONF_DIR/rootwrap.d
IRONIC_POLICY_JSON=$IRONIC_CONF_DIR/policy.json

# Support entry points installation of console scripts
IRONIC_BIN_DIR=$(get_python_exec_prefix)

# Ironic connection info.  Note the port must be specified.
IRONIC_SERVICE_PROTOCOL=http
IRONIC_HOSTPORT=${IRONIC_HOSTPORT:-$SERVICE_HOST:6385}


# Functions
# ---------

# cleanup_ironic() - Remove residual data files, anything left over from previous
# runs that would need to clean up.
function cleanup_ironic() {
    sudo rm -rf $IRONIC_AUTH_CACHE_DIR
}

# configure_ironic() - Set config files, create data dirs, etc
function configure_ironic() {
    if [[ ! -d $IRONIC_CONF_DIR ]]; then
        sudo mkdir -p $IRONIC_CONF_DIR
    fi
    sudo chown $STACK_USER $IRONIC_CONF_DIR

    # Copy over ironic configuration file and configure common parameters.
    cp $IRONIC_DIR/etc/ironic/ironic.conf.sample $IRONIC_CONF_FILE
    iniset $IRONIC_CONF_FILE DEFAULT debug True
    inicomment $IRONIC_CONF_FILE DEFAULT log_file
    iniset $IRONIC_CONF_FILE DEFAULT sql_connection `database_connection_url ironic`
    iniset $IRONIC_CONF_FILE DEFAULT use_syslog $SYSLOG

    # Configure Ironic conductor, if it was enabled.
    if is_service_enabled ir-cond; then
        configure_ironic_conductor
    fi

    # Configure Ironic API, if it was enabled.
    if is_service_enabled ir-api; then
        configure_ironic_api
    fi
}

# configure_ironic_api() - Is used by configure_ironic(). Performs
# API specific configuration.
function configure_ironic_api() {
    iniset $IRONIC_CONF_FILE keystone_authtoken auth_host $KEYSTONE_AUTH_HOST
    iniset $IRONIC_CONF_FILE keystone_authtoken auth_port $KEYSTONE_AUTH_PORT
    iniset $IRONIC_CONF_FILE keystone_authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
    iniset $IRONIC_CONF_FILE keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/
    iniset $IRONIC_CONF_FILE keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
    iniset $IRONIC_CONF_FILE keystone_authtoken admin_user ironic
    iniset $IRONIC_CONF_FILE keystone_authtoken admin_password $SERVICE_PASSWORD
    if is_service_enabled qpid; then
        iniset $IRONIC_CONF_FILE DEFAULT notifier_strategy qpid
    elif [ -n "$RABBIT_HOST" ] &&  [ -n "$RABBIT_PASSWORD" ]; then
        iniset $IRONIC_CONF_FILE DEFAULT notifier_strategy rabbit
    fi
    iniset_rpc_backend ironic $IRONIC_CONF_FILE DEFAULT
    iniset $IRONIC_CONF_FILE keystone_authtoken signing_dir $IRONIC_AUTH_CACHE_DIR/api

    cp -p $IRONIC_DIR/etc/ironic/policy.json $IRONIC_POLICY_JSON
}

# configure_ironic_conductor() - Is used by configure_ironic().
# Sets conductor specific settings.
function configure_ironic_conductor() {
    cp $IRONIC_DIR/etc/ironic/rootwrap.conf $IRONIC_ROOTWRAP_CONF
    cp -r $IRONIC_DIR/etc/ironic/rootwrap.d $IRONIC_ROOTWRAP_FILTERS

    iniset $IRONIC_CONF DEFAULT rootwrap_config $IRONIC_ROOTWRAP_CONF
}

# create_ironic_cache_dir() - Part of the init_ironic() process
function create_ironic_cache_dir() {
    # Create cache dir
    sudo mkdir -p $IRONIC_AUTH_CACHE_DIR/api
    sudo chown $STACK_USER $IRONIC_AUTH_CACHE_DIR/api
    rm -f $IRONIC_AUTH_CACHE_DIR/api/*
    sudo mkdir -p $IRONIC_AUTH_CACHE_DIR/registry
    sudo chown $STACK_USER $IRONIC_AUTH_CACHE_DIR/registry
    rm -f $IRONIC_AUTH_CACHE_DIR/registry/*
}

# create_ironic_accounts() - Set up common required ironic accounts

# Tenant               User       Roles
# ------------------------------------------------------------------
# service              ironic     admin        # if enabled
create_ironic_accounts() {

    SERVICE_TENANT=$(keystone tenant-list | awk "/ $SERVICE_TENANT_NAME / { print \$2 }")
    ADMIN_ROLE=$(keystone role-list | awk "/ admin / { print \$2 }")

    # Ironic
    if [[ "$ENABLED_SERVICES" =~ "ir-api" ]]; then
        IRONIC_USER=$(keystone user-create \
            --name=ironic \
            --pass="$SERVICE_PASSWORD" \
            --tenant_id $SERVICE_TENANT \
            --email=ironic@example.com \
            | grep " id " | get_field 2)
        keystone user-role-add \
            --tenant_id $SERVICE_TENANT \
            --user_id $IRONIC_USER \
            --role_id $ADMIN_ROLE
        if [[ "$KEYSTONE_CATALOG_BACKEND" = 'sql' ]]; then
            IRONIC_SERVICE=$(keystone service-create \
                --name=ironic \
                --type=baremetal \
                --description="Ironic baremetal provisioning service" \
                | grep " id " | get_field 2)
            keystone endpoint-create \
                --region RegionOne \
                --service_id $IRONIC_SERVICE \
                --publicurl "$IRONIC_SERVICE_PROTOCOL://$IRONIC_HOSTPORT" \
                --adminurl "$IRONIC_SERVICE_PROTOCOL://$IRONIC_HOSTPORT" \
                --internalurl "$IRONIC_SERVICE_PROTOCOL://$IRONIC_HOSTPORT"
        fi
    fi
}


# init_ironic() - Initialize databases, etc.
function init_ironic() {
    # (Re)create  ironic database
    recreate_database ironic utf8

    # Migrate ironic database
    $IRONIC_BIN_DIR/ironic-dbsync

    create_ironic_cache_dir

    # Create keystone artifacts for Ironic.
    create_ironic_accounts
}

# install_ironic() - Collect source and prepare
function install_ironic() {
    git_clone $IRONIC_REPO $IRONIC_DIR $IRONIC_BRANCH
    setup_develop $IRONIC_DIR
}

# start_ironic() - Start running processes, including screen
function start_ironic() {
    # Start Ironic API server, if enabled.
    if is_service_enabled ir-api; then
        start_ironic_api
    fi

    # Start Ironic conductor, if enabled.
    if is_service_enabled ir-cond; then
        start_ironic_conductor
    fi
}

# start_ironic_api() - Used by start_ironic().
# Starts Ironic API server.
function start_ironic_api() {
    screen_it ir-api "cd $IRONIC_DIR; $IRONIC_BIN_DIR/ironic-api --config-file=$IRONIC_CONF_FILE"
    echo "Waiting for ir-api ($IRONIC_HOSTPORT) to start..."
    if ! timeout $SERVICE_TIMEOUT sh -c "while ! http_proxy= wget -q -O- http://$IRONIC_HOSTPORT; do sleep 1; done"; then
      die $LINENO "ir-api did not start"
    fi
}

# start_ironic_conductor() - Used by start_ironic().
# Starts Ironic conductor.
function start_ironic_conductor() {
    screen_it ir-cond "cd $IRONIC_DIR; $IRONIC_BIN_DIR/ironic-conductor --config-file=$IRONIC_CONF_FILE"
    # TODO(romcheg): Find a way to check whether the conductor has started.
}

# stop_ironic() - Stop running processes
function stop_ironic() {
    # Kill the Ironic screen windows
    screen -S $SCREEN_NAME -p ir-api -X kill
    screen -S $SCREEN_NAME -p ir-cond -X kill
}


# Restore xtrace
$XTRACE

# Local variables:
# mode: shell-script
# End: