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

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

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

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


# Defaults
# --------

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

KEYSTONECLIENT_DIR=$DEST/python-keystoneclient

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

# Select Keystone's token format
# Choose from 'UUID' and 'PKI'
KEYSTONE_TOKEN_FORMAT=${KEYSTONE_TOKEN_FORMAT:-PKI}

# Set Keystone interface configuration
KEYSTONE_AUTH_HOST=${KEYSTONE_AUTH_HOST:-$SERVICE_HOST}
KEYSTONE_AUTH_PORT=${KEYSTONE_AUTH_PORT:-35357}
KEYSTONE_AUTH_PORT_INT=${KEYSTONE_AUTH_PORT_INT:-35358}
KEYSTONE_AUTH_PROTOCOL=${KEYSTONE_AUTH_PROTOCOL:-$SERVICE_PROTOCOL}

# Public facing bits
KEYSTONE_SERVICE_HOST=${KEYSTONE_SERVICE_HOST:-$SERVICE_HOST}
KEYSTONE_SERVICE_PORT=${KEYSTONE_SERVICE_PORT:-5000}
KEYSTONE_SERVICE_PORT_INT=${KEYSTONE_SERVICE_PORT_INT:-5001}
KEYSTONE_SERVICE_PROTOCOL=${KEYSTONE_SERVICE_PROTOCOL:-$SERVICE_PROTOCOL}


# 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
    fi
    sudo chown $STACK_USER $KEYSTONE_CONF_DIR

    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``
    local dburl
    database_connection_url dburl keystone

    if is_service_enabled tls-proxy; then
        # Set the service ports for a proxy to take the originals
        iniset $KEYSTONE_CONF DEFAULT public_port $KEYSTONE_SERVICE_PORT_INT
        iniset $KEYSTONE_CONF DEFAULT admin_port $KEYSTONE_AUTH_PORT_INT
    fi

    iniset $KEYSTONE_CONF DEFAULT admin_token "$SERVICE_TOKEN"
    iniset $KEYSTONE_CONF signing token_format "$KEYSTONE_TOKEN_FORMAT"
    iniset $KEYSTONE_CONF sql connection $dburl
    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

        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"

}

# create_keystone_accounts() - Sets up common required keystone accounts

# Tenant               User       Roles
# ------------------------------------------------------------------
# service              --         --
# --                   --         Member
# admin                admin      admin
# demo                 admin      admin
# demo                 demo       Member, anotherrole
# invisible_to_admin   demo       Member

# Migrated from keystone_data.sh
create_keystone_accounts() {

    # admin
    ADMIN_TENANT=$(keystone tenant-create \
        --name admin \
        | grep " id " | get_field 2)
    ADMIN_USER=$(keystone user-create \
        --name admin \
        --pass "$ADMIN_PASSWORD" \
        --email admin@example.com \
        | grep " id " | get_field 2)
    ADMIN_ROLE=$(keystone role-create \
        --name admin \
        | grep " id " | get_field 2)
    keystone user-role-add \
        --user_id $ADMIN_USER \
        --role_id $ADMIN_ROLE \
        --tenant_id $ADMIN_TENANT

    # service
    SERVICE_TENANT=$(keystone tenant-create \
        --name $SERVICE_TENANT_NAME \
        | grep " id " | get_field 2)

    # The Member role is used by Horizon and Swift so we need to keep it:
    MEMBER_ROLE=$(keystone role-create --name=Member | grep " id " | get_field 2)
    # ANOTHER_ROLE demonstrates that an arbitrary role may be created and used
    # TODO(sleepsonthefloor): show how this can be used for rbac in the future!
    ANOTHER_ROLE=$(keystone role-create --name=anotherrole | grep " id " | get_field 2)

    # invisible tenant - admin can't see this one
    INVIS_TENANT=$(keystone tenant-create --name=invisible_to_admin | grep " id " | get_field 2)

    # demo
    DEMO_TENANT=$(keystone tenant-create \
        --name=demo \
        | grep " id " | get_field 2)
    DEMO_USER=$(keystone user-create \
        --name demo \
        --pass "$ADMIN_PASSWORD" \
        --email demo@example.com \
        | grep " id " | get_field 2)
    keystone user-role-add --user_id $DEMO_USER --role_id $MEMBER_ROLE --tenant_id $DEMO_TENANT
    keystone user-role-add --user_id $ADMIN_USER --role_id $ADMIN_ROLE --tenant_id $DEMO_TENANT
    keystone user-role-add --user_id $DEMO_USER --role_id $ANOTHER_ROLE --tenant_id $DEMO_TENANT
    keystone user-role-add --user_id $DEMO_USER --role_id $MEMBER_ROLE --tenant_id $INVIS_TENANT

    # Keystone
    if [[ "$KEYSTONE_CATALOG_BACKEND" = 'sql' ]]; then
        KEYSTONE_SERVICE=$(keystone service-create \
            --name keystone \
            --type identity \
            --description "Keystone Identity Service" \
            | grep " id " | get_field 2)
        keystone endpoint-create \
            --region RegionOne \
            --service_id $KEYSTONE_SERVICE \
            --publicurl "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/v2.0" \
            --adminurl "$KEYSTONE_AUTH_PROTOCOL://$KEYSTONE_AUTH_HOST:$KEYSTONE_AUTH_PORT/v2.0" \
            --internalurl "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/v2.0"
    fi

    # TODO(dtroyer): This is part of a series of changes...remove these when
    #                complete if they are really unused
#    KEYSTONEADMIN_ROLE=$(keystone role-create \
#        --name KeystoneAdmin \
#        | grep " id " | get_field 2)
#    KEYSTONESERVICE_ROLE=$(keystone role-create \
#        --name KeystoneServiceAdmin \
#        | grep " id " | get_field 2)

    # TODO(termie): these two might be dubious
#    keystone user-role-add \
#        --user_id $ADMIN_USER \
#        --role_id $KEYSTONEADMIN_ROLE \
#        --tenant_id $ADMIN_TENANT
#    keystone user-role-add \
#        --user_id $ADMIN_USER \
#        --role_id $KEYSTONESERVICE_ROLE \
#        --tenant_id $ADMIN_TENANT
}

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

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

    if [[ "$KEYSTONE_TOKEN_FORMAT" == "PKI" ]]; then
        # Set up certificates
        rm -rf $KEYSTONE_CONF_DIR/ssl
        $KEYSTONE_DIR/bin/keystone-manage pki_setup

        # Create cache dir
        sudo mkdir -p $KEYSTONE_AUTH_CACHE_DIR
        sudo chown $STACK_USER $KEYSTONE_AUTH_CACHE_DIR
        rm -f $KEYSTONE_AUTH_CACHE_DIR/*
    fi
}

# 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() {
    # Get right service port for testing
    local service_port=$KEYSTONE_SERVICE_PORT
    if is_service_enabled tls-proxy; then
        service_port=$KEYSTONE_SERVICE_PORT_INT
    fi

    # 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"
    echo "Waiting for keystone to start..."
    if ! timeout $SERVICE_TIMEOUT sh -c "while ! http_proxy= curl -s http://$SERVICE_HOST:$service_port/v2.0/ >/dev/null; do sleep 1; done"; then
      echo "keystone did not start"
      exit 1
    fi

    # Start proxies if enabled
    if is_service_enabled tls-proxy; then
        start_tls_proxy '*' $KEYSTONE_SERVICE_PORT $KEYSTONE_SERVICE_HOST $KEYSTONE_SERVICE_PORT_INT &
        start_tls_proxy '*' $KEYSTONE_AUTH_PORT $KEYSTONE_AUTH_HOST $KEYSTONE_AUTH_PORT_INT &
    fi
}

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

# Restore xtrace
$XTRACE