[4281] Added scope_id to the MySQL tables holding options.

src/bin/admin/tests/mysql_tests.sh.in

@@ -165,6 +165,12 @@ EOF
 EOF
     ERRCODE=$?
     assert_eq 0 $ERRCODE "host_identifier_type table is missing or broken. (returned status code %d, expected %d)"
+    # Seventh table: dhcp_option_scope
+    mysql -u$db_user -p$db_password $db_name >/dev/null 2>&1 <<EOF
+    SELECT scope_id, scope_name FROM dhcp_option_scope;
+EOF
+    ERRCODE=$?
+    assert_eq 0 $ERRCODE "dhcp_option_scope table is missing or broken. (returned status code %d, expected %d)"
 
     # Let's wipe the whole database
     mysql_wipe

src/lib/dhcpsrv/mysql_host_data_source.cc

@@ -1801,16 +1801,18 @@ TaggedStatement tagged_statements[] = {
          "VALUES (?,?,?,?,?)"},
 
     // Inserts a single DHCPv4 option into 'dhcp4_options' table.
+    // Using fixed scope_id = 3, which associates an option with host.
     {MySqlHostDataSourceImpl::INSERT_V4_OPTION,
          "INSERT INTO dhcp4_options(option_id, code, value, formatted_value, space, "
-            "persistent, dhcp_client_class, dhcp4_subnet_id, host_id) "
-         " VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"},
+            "persistent, dhcp_client_class, dhcp4_subnet_id, host_id, scope_id) "
+         " VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, 3)"},
 
     // Inserts a single DHCPv6 option into 'dhcp6_options' table.
+    // Using fixed scope_id = 3, which associates an option with host.
     {MySqlHostDataSourceImpl::INSERT_V6_OPTION,
          "INSERT INTO dhcp6_options(option_id, code, value, formatted_value, space, "
-            "persistent, dhcp_client_class, dhcp6_subnet_id, host_id) "
-         " VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"},
+            "persistent, dhcp_client_class, dhcp6_subnet_id, host_id, scope_id) "
+         " VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, 3)"},
 
     // Retrieves host information, IPv6 reservations and both DHCPv4 and
     // DHCPv6 options associated with the host. The LEFT JOIN clause is used

src/share/database/scripts/mysql/dhcpdb_create.mysql

@@ -443,6 +443,33 @@ ALTER TABLE dhcp6_options MODIFY code SMALLINT UNSIGNED NOT NULL;
 ALTER TABLE dhcp4_options MODIFY dhcp4_subnet_id INT UNSIGNED NULL;
 ALTER TABLE dhcp6_options MODIFY dhcp6_subnet_id INT UNSIGNED NULL;
 
+# Scopes associate DHCP options stored in dhcp4_options and
+# dhcp6_options tables with hosts, subnets, classes or indicate
+# that they are global options.
+CREATE TABLE IF NOT EXISTS dhcp_option_scope (
+    scope_id TINYINT UNSIGNED PRIMARY KEY NOT NULL,
+    scope_name VARCHAR(32)
+) ENGINE = INNODB;
+
+START TRANSACTION;
+INSERT INTO dhcp_option_scope VALUES (0, "global");
+INSERT INTO dhcp_option_scope VALUES (1, "subnet");
+INSERT INTO dhcp_option_scope VALUES (2, "client-class");
+INSERT INTO dhcp_option_scope VALUES (3, "host");
+COMMIT;
+
+# Add scopes into table holding DHCPv4 options
+ALTER TABLE dhcp4_options ADD COLUMN scope_id TINYINT UNSIGNED NOT NULL;
+ALTER TABLE dhcp4_options
+    ADD CONSTRAINT fk_dhcp4_option_scope FOREIGN KEY (scope_id)
+    REFERENCES dhcp_option_scope (scope_id);
+
+# Add scopes into table holding DHCPv6 options
+ALTER TABLE dhcp6_options ADD COLUMN scope_id TINYINT UNSIGNED NOT NULL;
+ALTER TABLE dhcp6_options
+    ADD CONSTRAINT fk_dhcp6_option_scope FOREIGN KEY (scope_id)
+    REFERENCES dhcp_option_scope (scope_id);
+
 # Update the schema version number
 UPDATE schema_version
 SET version = '4', minor = '2';

src/share/database/scripts/mysql/dhcpdb_drop.mysql

@@ -17,6 +17,7 @@ DROP TABLE IF EXISTS dhcp4_options;
 DROP TABLE IF EXISTS dhcp6_options;
 DROP TABLE IF EXISTS host_identifier_type;
 DROP TABLE IF EXISTS lease_state;
+DROP TABLE IF EXISTS dhcp_option_scope;
 DROP TRIGGER IF EXISTS host_BDEL;
 DROP PROCEDURE IF EXISTS lease4DumpHeader;
 DROP PROCEDURE IF EXISTS lease4DumpData;