[3274] Support for relay information in parser for DHCPv6 added

src/bin/dhcp6/config_parser.cc

@@ -368,7 +368,7 @@ public:
     /// @param ignored first parameter
     /// stores global scope parameters, options, option defintions.
     Subnet6ConfigParser(const std::string&)
-        :SubnetConfigParser("", globalContext()) {
+        :SubnetConfigParser("", globalContext(), IOAddress("::")) {
     }
 
     /// @brief Adds the created subnet to a server's configuration.
@@ -381,6 +381,12 @@ public:
                 isc_throw(Unexpected,
                           "Invalid cast in Subnet4ConfigParser::commit");
             }
+
+            // Set relay infomation if it was provided
+            if (relay_info_) {
+                sub6ptr->setRelay(*relay_info_);
+            }
+
             isc::dhcp::CfgMgr::instance().addSubnet6(sub6ptr);
         }
     }
@@ -408,6 +414,8 @@ protected:
             parser = new StringParser(config_id, string_values_);
         } else if (config_id.compare("pool") == 0) {
             parser = new Pool6Parser(config_id, pools_);
+        } else if (config_id.compare("relay") == 0) {
+            parser = new RelayInfoParser(config_id, relay_info_, IOAddress("::"));
         } else if (config_id.compare("pd-pools") == 0) {
             parser = new PdPoolListParser(config_id, pools_);
         } else if (config_id.compare("option-data") == 0) {

src/bin/dhcp6/tests/config_parser_unittest.cc

@@ -2924,4 +2924,34 @@ TEST_F(Dhcp6ParserTest, allInterfaces) {
 }
 
 
+// This test checks if it is possible to specify relay information
+TEST_F(Dhcp6ParserTest, subnetRelayInfo) {
+
+    ConstElementPtr status;
+
+    // A config with relay information.
+    string config = "{ \"interfaces\": [ \"*\" ],"
+        "\"rebind-timer\": 2000, "
+        "\"renew-timer\": 1000, "
+        "\"subnet6\": [ { "
+        "    \"pool\": [ \"2001:db8:1::1 - 2001:db8:1::ffff\" ],"
+        "    \"relay\": { "
+        "        \"ip-address\": \"2001:db8:1::abcd\""
+        "    },"
+        "    \"subnet\": \"2001:db8:1::/64\" } ],"
+        "\"preferred-lifetime\": 3000, "
+        "\"valid-lifetime\": 4000 }";
+
+    ElementPtr json = Element::fromJSON(config);
+
+    EXPECT_NO_THROW(status = configureDhcp6Server(srv_, json));
+
+    // returned value should be 0 (configuration success)
+    checkResult(status, 0);
+
+    Subnet6Ptr subnet = CfgMgr::instance().getSubnet6(IOAddress("2001:db8:1::1"));
+    ASSERT_TRUE(subnet);
+    EXPECT_EQ("2001:db8:1::abcd", subnet->relay_.addr_.toText());
+}
+
 };