# lib/keystone
# Functions to control the configuration and operation of **Keystone**

# Dependencies:
# ``functions`` file
# ``BASE_SQL_CONN``
# ``SERVICE_HOST``
# ``SERVICE_TOKEN``
# ``S3_SERVICE_PORT`` (template backend only)


# ``stack.sh`` calls the entry points in this order:
#
# install_keystone
# configure_keystone
# init_keystone
# start_keystone
# stop_keystone
# cleanup_keystone

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


# Defaults
# --------

# <define global variables here that belong to this project>

# Set up default directories
KEYSTONE_DIR=$DEST/keystone
KEYSTONE_CONF_DIR=${KEYSTONE_CONF_DIR:-/etc/keystone}
KEYSTONE_CONF=$KEYSTONE_CONF_DIR/keystone.conf

KEYSTONECLIENT_DIR=$DEST/python-keystoneclient

# Select the backend for Keystopne's service catalog
KEYSTONE_CATALOG_BACKEND=${KEYSTONE_CATALOG_BACKEND:-sql}
KEYSTONE_CATALOG=$KEYSTONE_CONF_DIR/default_catalog.templates

# Set Keystone interface configuration
KEYSTONE_API_PORT=${KEYSTONE_API_PORT:-5000}
KEYSTONE_AUTH_HOST=${KEYSTONE_AUTH_HOST:-$SERVICE_HOST}
KEYSTONE_AUTH_PORT=${KEYSTONE_AUTH_PORT:-35357}
KEYSTONE_AUTH_PROTOCOL=${KEYSTONE_AUTH_PROTOCOL:-http}
KEYSTONE_SERVICE_HOST=${KEYSTONE_SERVICE_HOST:-$SERVICE_HOST}
KEYSTONE_SERVICE_PORT=${KEYSTONE_SERVICE_PORT:-5000}
KEYSTONE_SERVICE_PROTOCOL=${KEYSTONE_SERVICE_PROTOCOL:-http}
KEYSTONE_TOKEN_FORMAT=${KEYSTONE_TOKEN_FORMAT:-PKI}


# Entry Points
# ------------

# cleanup_keystone() - Remove residual data files, anything left over from previous
# runs that a clean run would need to clean up
function cleanup_keystone() {
    # kill instances (nova)
    # delete image files (glance)
    # This function intentionally left blank
    :
}

# configure_keystoneclient() - Set config files, create data dirs, etc
function configure_keystoneclient() {
    setup_develop $KEYSTONECLIENT_DIR
}

# configure_keystone() - Set config files, create data dirs, etc
function configure_keystone() {
    setup_develop $KEYSTONE_DIR

    if [[ ! -d $KEYSTONE_CONF_DIR ]]; then
        sudo mkdir -p $KEYSTONE_CONF_DIR
        sudo chown `whoami` $KEYSTONE_CONF_DIR
    fi

    if [[ "$KEYSTONE_CONF_DIR" != "$KEYSTONE_DIR/etc" ]]; then
        cp -p $KEYSTONE_DIR/etc/keystone.conf.sample $KEYSTONE_CONF
        cp -p $KEYSTONE_DIR/etc/policy.json $KEYSTONE_CONF_DIR
    fi

    # Rewrite stock ``keystone.conf``
    iniset $KEYSTONE_CONF DEFAULT admin_token "$SERVICE_TOKEN"
    iniset $KEYSTONE_CONF signing token_format "$KEYSTONE_TOKEN_FORMAT"
    iniset $KEYSTONE_CONF sql connection "$BASE_SQL_CONN/keystone?charset=utf8"
    iniset $KEYSTONE_CONF ec2 driver "keystone.contrib.ec2.backends.sql.Ec2"
    sed -e "
        /^pipeline.*ec2_extension crud_/s|ec2_extension crud_extension|ec2_extension s3_extension crud_extension|;
    " -i $KEYSTONE_CONF

    # Append the S3 bits
    iniset $KEYSTONE_CONF filter:s3_extension paste.filter_factory "keystone.contrib.s3:S3Extension.factory"

    if [[ "$KEYSTONE_CATALOG_BACKEND" = "sql" ]]; then
        # Configure ``keystone.conf`` to use sql
        iniset $KEYSTONE_CONF catalog driver keystone.catalog.backends.sql.Catalog
        inicomment $KEYSTONE_CONF catalog template_file
    else
        cp -p $FILES/default_catalog.templates $KEYSTONE_CATALOG

        # Add swift endpoints to service catalog if swift is enabled
        if is_service_enabled swift; then
            echo "catalog.RegionOne.object_store.publicURL = http://%SERVICE_HOST%:8080/v1/AUTH_\$(tenant_id)s" >> $KEYSTONE_CATALOG
            echo "catalog.RegionOne.object_store.adminURL = http://%SERVICE_HOST%:8080/" >> $KEYSTONE_CATALOG
            echo "catalog.RegionOne.object_store.internalURL = http://%SERVICE_HOST%:8080/v1/AUTH_\$(tenant_id)s" >> $KEYSTONE_CATALOG
            echo "catalog.RegionOne.object_store.name = Swift Service" >> $KEYSTONE_CATALOG
        fi

        # Add quantum endpoints to service catalog if quantum is enabled
        if is_service_enabled quantum; then
            echo "catalog.RegionOne.network.publicURL = http://%SERVICE_HOST%:$Q_PORT/" >> $KEYSTONE_CATALOG
            echo "catalog.RegionOne.network.adminURL = http://%SERVICE_HOST%:$Q_PORT/" >> $KEYSTONE_CATALOG
            echo "catalog.RegionOne.network.internalURL = http://%SERVICE_HOST%:$Q_PORT/" >> $KEYSTONE_CATALOG
            echo "catalog.RegionOne.network.name = Quantum Service" >> $KEYSTONE_CATALOG
        fi

        sudo sed -e "
            s,%SERVICE_HOST%,$SERVICE_HOST,g;
            s,%S3_SERVICE_PORT%,$S3_SERVICE_PORT,g;
        " -i $KEYSTONE_CATALOG

        # Configure ``keystone.conf`` to use templates
        iniset $KEYSTONE_CONF catalog driver "keystone.catalog.backends.templated.TemplatedCatalog"
        iniset $KEYSTONE_CONF catalog template_file "$KEYSTONE_CATALOG"
    fi

    # Set up logging
    LOGGING_ROOT="devel"
    if [ "$SYSLOG" != "False" ]; then
        LOGGING_ROOT="$LOGGING_ROOT,production"
    fi
    KEYSTONE_LOG_CONFIG="--log-config $KEYSTONE_CONF_DIR/logging.conf"
    cp $KEYSTONE_DIR/etc/logging.conf.sample $KEYSTONE_CONF_DIR/logging.conf
    iniset $KEYSTONE_CONF_DIR/logging.conf logger_root level "DEBUG"
    iniset $KEYSTONE_CONF_DIR/logging.conf logger_root handlers "devel,production"

}

# init_keystone() - Initialize databases, etc.
function init_keystone() {
    # (Re)create keystone database
    mysql -u$MYSQL_USER -p$MYSQL_PASSWORD -e 'DROP DATABASE IF EXISTS keystone;'
    mysql -u$MYSQL_USER -p$MYSQL_PASSWORD -e 'CREATE DATABASE keystone CHARACTER SET utf8;'

    # Initialize keystone database
    $KEYSTONE_DIR/bin/keystone-manage db_sync

    # Set up certificates
    $KEYSTONE_DIR/bin/keystone-manage pki_setup
}

# install_keystoneclient() - Collect source and prepare
function install_keystoneclient() {
    git_clone $KEYSTONECLIENT_REPO $KEYSTONECLIENT_DIR $KEYSTONECLIENT_BRANCH
}

# install_keystone() - Collect source and prepare
function install_keystone() {
    git_clone $KEYSTONE_REPO $KEYSTONE_DIR $KEYSTONE_BRANCH
}

# start_keystone() - Start running processes, including screen
function start_keystone() {
    # Start Keystone in a screen window
    screen_it key "cd $KEYSTONE_DIR && $KEYSTONE_DIR/bin/keystone-all --config-file $KEYSTONE_CONF $KEYSTONE_LOG_CONFIG -d --debug"
}

# stop_keystone() - Stop running processes
function stop_keystone() {
    # Kill the Keystone screen window
    screen -S $SCREEN_NAME -p key -X kill
}

# Restore xtrace
$XTRACE