[3744] Lease database parser executed as the last one for DHCPv6 server.

src/bin/dhcp6/json_config_parser.cc

@@ -632,6 +632,7 @@ configureDhcp6Server(Dhcpv6Srv&, isc::data::ConstElementPtr config_set) {
     ParserPtr subnet_parser;
     ParserPtr option_parser;
     ParserPtr iface_parser;
+    ParserPtr leases_parser;
 
     // Some of the parsers alter state of the system that can't easily
     // be undone. (Or alter it in a way such that undoing the change
@@ -668,6 +669,8 @@ configureDhcp6Server(Dhcpv6Srv&, isc::data::ConstElementPtr config_set) {
                       .arg(config_pair.first);
             if (config_pair.first == "subnet6") {
                 subnet_parser = parser;
+            } else if (config_pair.first == "lease-database") {
+                leases_parser = parser;
             } else if (config_pair.first == "option-data") {
                 option_parser = parser;
             } else if (config_pair.first == "hooks-libraries") {
@@ -703,7 +706,7 @@ configureDhcp6Server(Dhcpv6Srv&, isc::data::ConstElementPtr config_set) {
             option_parser->commit();
         }
 
-        // The subnet parser is the last one to be run.
+        // The subnet parser is the next one to be run.
         std::map<std::string, ConstElementPtr>::const_iterator subnet_config =
             values_map.find("subnet6");
         if (subnet_config != values_map.end()) {
@@ -711,6 +714,15 @@ configureDhcp6Server(Dhcpv6Srv&, isc::data::ConstElementPtr config_set) {
             subnet_parser->build(subnet_config->second);
         }
 
+        // The lease database parser is the last to be run.
+        std::map<std::string, ConstElementPtr>::const_iterator leases_config =
+            values_map.find("lease-database");
+        if (leases_config != values_map.end()) {
+            config_pair.first = "lease-database";
+            leases_parser->build(leases_config->second);
+            leases_parser->commit();
+        }
+
     } catch (const isc::Exception& ex) {
         LOG_ERROR(dhcp6_logger, DHCP6_PARSER_FAIL)
                   .arg(config_pair.first).arg(ex.what());