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#!/bin/sh
# Copyright (C) 2022 Internet Systems Consortium, Inc. ("ISC")
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# shellcheck disable=SC1091
# SC1091: Not following: ... was not specified as input (see shellcheck -x).
# Exit with error if commands exit with non-zero and if undefined variables are
# used.
set -eu
# shellcheck disable=SC2034
# SC2034: ... appears unused. Verify use (or export if used externally).
prefix="@prefix@"
# Include utilities. Use installed version if available and
# use build version if it isn't.
if [ -e @datarootdir@/@PACKAGE_NAME@/scripts/admin-utils.sh ]; then
. "@datarootdir@/@PACKAGE_NAME@/scripts/admin-utils.sh"
else
. "@abs_top_builddir@/src/bin/admin/admin-utils.sh"
fi
VERSION=$(pgsql_version "$@")
if [ "$VERSION" != "11.0" ]; then
printf 'This script upgrades 11.0 to 12.0. '
printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
exit 0
fi
psql "$@" >/dev/null <<EOF
START TRANSACTION;
-- This line starts the schema upgrade to version 12.
-- Modify shared-network-name foreign key constraint on dhcp4_subnet to not perform
-- the update when the network is deleted the cascaded update will not execute
-- dhcp4_subnet update trigger leaving the updated subnets without audit_entries.
ALTER TABLE dhcp4_subnet
DROP CONSTRAINT fk_dhcp4_subnet_shared_network,
ADD CONSTRAINT fk_dhcp4_subnet_shared_network FOREIGN KEY (shared_network_name)
REFERENCES dhcp4_shared_network (name)
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Modify BEFORE delete trigger function on dhcp4_shared_network to explicitly
-- update dhcp4_subnets. This ensures there are audit entries for updated
-- subnets.
-- Trigger function for dhcp4_shared_network_BDEL called BEFORE DELETE on dhcp4_shared_network
CREATE OR REPLACE FUNCTION func_dhcp4_shared_network_BDEL() RETURNS TRIGGER AS \$dhcp4_shared_network_BDEL\$
BEGIN
PERFORM createAuditEntryDHCP4('dhcp4_shared_network', OLD.id, 'delete');
-- Explicitly update subnets now rather than via foreign key constraint, this ensures the
-- audit entries for subnets will preceded that of the shared-network, keeping the order
-- of the entries the same as they are for MySQL.
UPDATE dhcp4_subnet SET shared_network_name = NULL WHERE shared_network_name = OLD.name;
DELETE FROM dhcp4_options WHERE shared_network_name = OLD.name;
RETURN OLD;
END;
\$dhcp4_shared_network_BDEL\$
LANGUAGE plpgsql;
-- Modify shared-network-name foreign key constraint on dhcp6_subnet to not perform
-- the update when the network is deleted the cascaded update will not execute
-- dhcp6_subnet update trigger leaving the updated subnets without audit_entries.
ALTER TABLE dhcp6_subnet
DROP CONSTRAINT fk_dhcp6_subnet_shared_network,
ADD CONSTRAINT fk_dhcp6_subnet_shared_network FOREIGN KEY (shared_network_name)
REFERENCES dhcp6_shared_network (name)
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Modify BEFORE delete trigger function on dhcp6_shared_network to explicitly
-- update dhcp6_subnets. This ensures there are audit entries for updated
-- subnets.
-- Trigger function for dhcp6_shared_network_BDEL called BEFORE DELETE on dhcp6_shared_network
CREATE OR REPLACE FUNCTION func_dhcp6_shared_network_BDEL() RETURNS TRIGGER AS \$dhcp6_shared_network_BDEL\$
BEGIN
PERFORM createAuditEntryDHCP6('dhcp6_shared_network', OLD.id, 'delete');
-- Explicitly update subnets now rather than via foreign key constraint, this ensures the
-- audit entries for subnets will preceded that of the shared-network, keeping the order
-- of the entries the same as they are for MySQL.
UPDATE dhcp6_subnet SET shared_network_name = NULL WHERE shared_network_name = OLD.name;
DELETE FROM dhcp6_options WHERE shared_network_name = OLD.name;
RETURN OLD;
END;
\$dhcp6_shared_network_BDEL\$
LANGUAGE plpgsql;
-- Add user_context column to client class tables.
ALTER TABLE dhcp4_client_class ADD COLUMN user_context JSON DEFAULT NULL;
ALTER TABLE dhcp6_client_class ADD COLUMN user_context JSON DEFAULT NULL;
-- Update the schema version number.
UPDATE schema_version
SET version = '12', minor = '0';
-- This line concludes the schema upgrade to version 12.
-- Commit the script transaction.
COMMIT;
EOF
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