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#!/bin/sh
# Copyright (C) 2020-2022 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 [ "$VERSION" != "6.0" ]; then
printf 'This script upgrades 6.0 to 6.1. '
printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
exit 0
fi
psql "$@" >/dev/null <<EOF
START TRANSACTION;
-- Fix v4 update trigger procedure
CREATE OR REPLACE FUNCTION proc_stat_lease4_update () RETURNS trigger AS \$stat_lease4_update\$
BEGIN
IF OLD.subnet_id != NEW.subnet_id OR OLD.state != NEW.state THEN
IF OLD.state < 2 THEN
-- Decrement the old state count if record exists
UPDATE lease4_stat SET leases = GREATEST(leases - 1, 0)
WHERE subnet_id = OLD.subnet_id AND state = OLD.state;
END IF;
IF NEW.state < 2 THEN
-- Increment the new state count if record exists
UPDATE lease4_stat SET leases = leases + 1
WHERE subnet_id = NEW.subnet_id AND state = NEW.state;
-- Insert new state record if it does not exist
IF NOT FOUND THEN
INSERT INTO lease4_stat VALUES (NEW.subnet_id, NEW.state, 1);
END IF;
END IF;
END IF;
-- Return is ignored since this is an after insert
RETURN NULL;
END;
\$stat_lease4_update\$ LANGUAGE plpgsql;
--
-- Fix the v4 delete trigger procedure
CREATE OR REPLACE FUNCTION proc_stat_lease4_delete () RETURNS trigger AS \$stat_lease4_delete\$
BEGIN
IF OLD.state < 2 THEN
-- Decrement the state count if record exists
UPDATE lease4_stat SET leases = GREATEST(leases - 1, 0)
WHERE subnet_id = OLD.subnet_id AND OLD.state = state;
END IF;
-- Return is ignored since this is an after insert
RETURN NULL;
END;
\$stat_lease4_delete\$ LANGUAGE plpgsql;
--
-- Fix v6 update trigger procedure
CREATE OR REPLACE FUNCTION proc_stat_lease6_update () RETURNS trigger AS \$stat_lease6_update\$
BEGIN
IF OLD.subnet_id != NEW.subnet_id OR
OLD.lease_type != NEW.lease_type OR
OLD.state != NEW.state THEN
IF OLD.state < 2 THEN
-- Decrement the old state count if record exists
UPDATE lease6_stat SET leases = GREATEST(leases - 1, 0)
WHERE subnet_id = OLD.subnet_id AND lease_type = OLD.lease_type
AND state = OLD.state;
END IF;
IF NEW.state < 2 THEN
-- Increment the new state count if record exists
UPDATE lease6_stat SET leases = leases + 1
WHERE subnet_id = NEW.subnet_id AND lease_type = NEW.lease_type
AND state = NEW.state;
-- Insert new state record if it does not exist
IF NOT FOUND THEN
INSERT INTO lease6_stat VALUES (NEW.subnet_id, NEW.lease_type, NEW.state, 1);
END IF;
END IF;
END IF;
-- Return is ignored since this is an after insert
RETURN NULL;
END;
\$stat_lease6_update\$ LANGUAGE plpgsql;
--
-- Fix the v6 delete trigger procedure
CREATE OR REPLACE FUNCTION proc_stat_lease6_delete() RETURNS trigger AS \$stat_lease6_delete\$
BEGIN
IF OLD.state < 2 THEN
-- Decrement the state count if record exists
UPDATE lease6_stat SET leases = GREATEST(leases - 1, 0)
WHERE subnet_id = OLD.subnet_id AND lease_type = OLD.lease_type
AND OLD.state = state;
END IF;
-- Return is ignored since this is an after insert
RETURN NULL;
END;
\$stat_lease6_delete\$ LANGUAGE plpgsql;
-- Set 6.1 schema version.
UPDATE schema_version
SET version = '6', minor = '1';
-- Schema 6.1 specification ends here.
-- Commit the script transaction
COMMIT;
EOF
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