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#!/bin/sh
# Copyright (C) 2018-2021 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 [ "$VERSION" != "5.2" ]; then
printf 'This script upgrades 5.2 to 6.0. '
printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
exit 0
fi
mysql "$@" <<EOF
# Add user context into table holding hosts
ALTER TABLE hosts ADD COLUMN user_context TEXT NULL;
# Add user contexts into tables holding DHCP options
ALTER TABLE dhcp4_options ADD COLUMN user_context TEXT NULL;
ALTER TABLE dhcp6_options ADD COLUMN user_context TEXT NULL;
# Create index for searching leases by subnet identifier.
CREATE INDEX lease4_by_subnet_id ON lease4 (subnet_id);
# Create for searching leases by subnet identifier and lease type.
CREATE INDEX lease6_by_subnet_id_lease_type ON lease6 (subnet_id, lease_type);
# The index by iaid_subnet_id_duid is not the best choice because there are
# cases when we don't specify subnet identifier while searching leases. The
# index will be universal if the subnet_id is the right most column in the
# index.
DROP INDEX lease6_by_iaid_subnet_id_duid on lease6;
CREATE INDEX lease6_by_duid_iaid_subnet_id ON lease6 (duid, iaid, subnet_id);
# Create lease4_stat table
CREATE TABLE lease4_stat (
subnet_id INT UNSIGNED NOT NULL,
state INT UNSIGNED NOT NULL,
leases BIGINT,
PRIMARY KEY (subnet_id, state)
) ENGINE = INNODB;
# Create stat_lease4_insert trigger
DELIMITER $$
CREATE TRIGGER stat_lease4_insert AFTER INSERT ON lease4
FOR EACH ROW
BEGIN
IF NEW.state = 0 OR NEW.state = 1 THEN
# Update the state count if it exists
UPDATE lease4_stat SET leases = leases + 1
WHERE subnet_id = NEW.subnet_id AND state = NEW.state;
# Insert the state count record if it does not exist
IF ROW_COUNT() <= 0 THEN
INSERT INTO lease4_stat VALUES (NEW.subnet_id, NEW.state, 1);
END IF;
END IF;
END $$
DELIMITER ;
# Create stat_lease4_update trigger
DELIMITER $$
CREATE TRIGGER stat_lease4_update AFTER UPDATE ON lease4
FOR EACH ROW
BEGIN
IF OLD.state != NEW.state THEN
IF OLD.state = 0 OR OLD.state = 1 THEN
# Decrement the old state count if record exists
UPDATE lease4_stat SET leases = leases - 1
WHERE subnet_id = OLD.subnet_id AND state = OLD.state;
END IF;
IF NEW.state = 0 OR NEW.state = 1 THEN
# Increment the new state count if record exists
UPDATE lease4_stat SET leases = leases + 1
WHERE subnet_id = NEW.subnet_id AND state = NEW.state;
# Insert new state record if it does not exist
IF ROW_COUNT() <= 0 THEN
INSERT INTO lease4_stat VALUES (NEW.subnet_id, NEW.state, 1);
END IF;
END IF;
END IF;
END $$
DELIMITER ;
# Create stat_lease4_delete trigger
DELIMITER $$
CREATE TRIGGER stat_lease4_delete AFTER DELETE ON lease4
FOR EACH ROW
BEGIN
IF OLD.state = 0 OR OLD.state = 1 THEN
# Decrement the state count if record exists
UPDATE lease4_stat SET leases = leases - 1
WHERE subnet_id = OLD.subnet_id AND OLD.state = state;
END IF;
END $$
DELIMITER ;
# Create lease6_stat table
CREATE TABLE lease6_stat (
subnet_id INT UNSIGNED NOT NULL,
lease_type INT UNSIGNED NOT NULL,
state INT UNSIGNED NOT NULL,
leases BIGINT,
PRIMARY KEY (subnet_id, lease_type, state)
) ENGINE = INNODB;
# Create stat_lease6_insert trigger
DELIMITER $$
CREATE TRIGGER stat_lease6_insert AFTER INSERT ON lease6
FOR EACH ROW
BEGIN
IF NEW.state = 0 OR NEW.state = 1 THEN
# Update the state count if it exists
UPDATE lease6_stat SET leases = leases + 1
WHERE
subnet_id = NEW.subnet_id AND lease_type = NEW.lease_type
AND state = NEW.state;
# Insert the state count record if it does not exist
IF ROW_COUNT() <= 0 THEN
INSERT INTO lease6_stat
VALUES (NEW.subnet_id, NEW.lease_type, NEW.state, 1);
END IF;
END IF;
END $$
DELIMITER ;
# Create stat_lease6_update trigger
DELIMITER $$
CREATE TRIGGER stat_lease6_update AFTER UPDATE ON lease6
FOR EACH ROW
BEGIN
IF OLD.state != NEW.state THEN
IF OLD.state = 0 OR OLD.state = 1 THEN
# Decrement the old state count if record exists
UPDATE lease6_stat SET leases = leases - 1
WHERE subnet_id = OLD.subnet_id AND lease_type = OLD.lease_type
AND state = OLD.state;
END IF;
IF NEW.state = 0 OR NEW.state = 1 THEN
# Increment the new state count if record exists
UPDATE lease6_stat SET leases = leases + 1
WHERE subnet_id = NEW.subnet_id AND lease_type = NEW.lease_type
AND state = NEW.state;
# Insert new state record if it does not exist
IF ROW_COUNT() <= 0 THEN
INSERT INTO lease6_stat
VALUES (NEW.subnet_id, NEW.lease_type, NEW.state, 1);
END IF;
END IF;
END IF;
END $$
DELIMITER ;
# Create stat_lease6_delete trigger
DELIMITER $$
CREATE TRIGGER stat_lease6_delete AFTER DELETE ON lease6
FOR EACH ROW
BEGIN
IF OLD.state = 0 OR OLD.state = 1 THEN
# Decrement the state count if record exists
UPDATE lease6_stat SET leases = leases - 1
WHERE subnet_id = OLD.subnet_id AND lease_type = OLD.lease_type
AND state = OLD.state;
END IF;
END $$
DELIMITER ;
# Populate lease4_stat table based on existing leases
# We only care about assigned and declined states
INSERT INTO lease4_stat (subnet_id, state, leases)
SELECT subnet_id, state, count(state)
FROM lease4 WHERE state < 2
GROUP BY subnet_id, state ORDER BY subnet_id;
# Populate lease6_stat table based on existing leases
# We only care about assigned and declined states
INSERT INTO lease6_stat (subnet_id, lease_type, state, leases)
SELECT subnet_id, lease_type, state, count(state)
FROM lease6 WHERE state < 2
GROUP BY subnet_id, lease_type, state
ORDER BY subnet_id;
# Update the schema version number
UPDATE schema_version
SET version = '6', minor = '0';
# This line concludes database upgrade to version 6.0.
EOF
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