1 files changed, 78 insertions, 0 deletions
diff --git a/src/share/database/scripts/pgsql/upgrade_003.1_to_003.2.sh.in b/src/share/database/scripts/pgsql/upgrade_003.1_to_003.2.sh.in
new file mode 100644
index 0000000..f9ec2bb
--- /dev/null
+++ b/src/share/database/scripts/pgsql/upgrade_003.1_to_003.2.sh.in
@@ -0,0 +1,78 @@
+#!/bin/sh
+
+# Copyright (C) 2017-2022 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 [ "$VERSION" != "3.1" ]; then
+    printf 'This script upgrades 3.1 to 3.2. '
+    printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
+    exit 0
+fi
+
+psql "$@" >/dev/null <<EOF
+
+START TRANSACTION;
+
+-- Remove constraints which perform too restrictive checks on the inserted
+-- host reservations. We want to be able to insert host reservations which
+-- include no specific IPv4 address or those that have repeating subnet
+-- identifiers, e.g. IPv4 reservations would typically include 0 (or null)
+-- IPv6 subnet identifiers.
+ALTER TABLE hosts DROP CONSTRAINT key_dhcp4_ipv4_address_subnet_id;
+ALTER TABLE hosts DROP CONSTRAINT key_dhcp4_identifier_subnet_id;
+ALTER TABLE hosts DROP CONSTRAINT key_dhcp6_identifier_subnet_id;
+
+-- Create partial indexes instead of the constraints that we have removed.
+
+-- IPv4 address/IPv4 subnet identifier pair is unique if subnet identifier is
+-- not null and not 0.
+CREATE UNIQUE INDEX hosts_dhcp4_ipv4_address_subnet_id ON hosts
+       (ipv4_address ASC, dhcp4_subnet_id ASC)
+    WHERE ipv4_address IS NOT NULL AND ipv4_address <> 0;
+
+-- Client identifier is unique within an IPv4 subnet when subnet identifier is
+-- not null and not 0.
+CREATE UNIQUE INDEX hosts_dhcp4_identifier_subnet_id ON hosts
+        (dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp4_subnet_id ASC)
+    WHERE (dhcp4_subnet_id IS NOT NULL AND dhcp4_subnet_id <> 0);
+
+-- Client identifier is unique within an IPv6 subnet when subnet identifier is
+-- not null and not 0.
+CREATE UNIQUE INDEX hosts_dhcp6_identifier_subnet_id ON hosts
+        (dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp6_subnet_id ASC)
+    WHERE (dhcp6_subnet_id IS NOT NULL AND dhcp6_subnet_id <> 0);
+
+-- Set 3.2 schema version.
+UPDATE schema_version
+    SET version = '3', minor = '2';
+
+-- Schema 3.2 specification ends here.
+
+-- Commit the script transaction
+COMMIT;
+
+EOF