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#!/bin/sh

# Copyright (C) 2020-2021 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=$(mysql_version "$@")

if [ "$VERSION" != "9.1" ]; then
    printf 'This script upgrades 9.1 to 9.2. '
    printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
    exit 0
fi

mysql "$@" <<EOF

# Add missing indexes (foreign keys) to the dhcp4_options table.
ALTER TABLE dhcp4_options ADD CONSTRAINT fk_dhcp4_options_shared_network
    FOREIGN KEY (shared_network_name)
        REFERENCES dhcp4_shared_network(name)
        ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE dhcp4_options ADD CONSTRAINT fk_dhcp4_options_subnet
    FOREIGN KEY (dhcp4_subnet_id)
        REFERENCES dhcp4_subnet(subnet_id)
        ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE dhcp4_options ADD CONSTRAINT fk_dhcp4_options_pool
    FOREIGN KEY (pool_id)
        REFERENCES dhcp4_pool(id)
        ON DELETE CASCADE ON UPDATE CASCADE;

# Add missing indexes (foreign keys) to the dhcp6_options table.
ALTER TABLE dhcp6_options ADD CONSTRAINT fk_dhcp6_options_shared_network
    FOREIGN KEY (shared_network_name)
        REFERENCES dhcp6_shared_network(name)
        ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE dhcp6_options ADD CONSTRAINT fk_dhcp6_options_subnet
    FOREIGN KEY (dhcp6_subnet_id)
        REFERENCES dhcp6_subnet(subnet_id)
        ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE dhcp6_options ADD CONSTRAINT fk_dhcp6_options_pool
    FOREIGN KEY (pool_id)
        REFERENCES dhcp6_pool(id)
        ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE dhcp6_options ADD CONSTRAINT fk_dhcp6_options_pd_pool
    FOREIGN KEY (pd_pool_id)
        REFERENCES dhcp6_pd_pool(id)
        ON DELETE CASCADE ON UPDATE CASCADE;

# Update the schema version number
UPDATE schema_version
SET version = '9', minor = '2';

# This line concludes database upgrade to version 9.2.

EOF