[3477] Return status of DDNS updates in the configuration summary.

src/lib/dhcpsrv/configuration.cc

@@ -43,6 +43,11 @@ Configuration::getConfigSummary(const uint32_t selection) const {
         s << "; ";
     }
 
+    if ((selection & CFGSEL_DDNS) == CFGSEL_DDNS) {
+        bool ddns_enabled = CfgMgr::instance().ddnsEnabled();
+        s << "DDNS: " << (ddns_enabled ? "enabled" : "disabled") << "; ";
+    }
+
     if (s.tellp() == 0) {
         s << "no config details available";
     }

src/lib/dhcpsrv/configuration.h

@@ -84,12 +84,14 @@ typedef std::vector<isc::dhcp::LoggingInfo> LoggingInfoStorage;
 /// @todo Migrate all other configuration parameters from cfgmgr.h here
 struct Configuration {
 
-    static const uint16_t CFGSEL_NONE = 0x00000000;
-    static const uint16_t CFGSEL_SUBNET4 = 0x00000001;
-    static const uint16_t CFGSEL_SUBNET6 = 0x00000002;
-    static const uint16_t CFGSEL_ALL4 = 0x00000001;
-    static const uint16_t CFGSEL_ALL6 = 0x00000002;
-    static const uint16_t CFGSEL_ALL = 0x00000003;
+    static const uint16_t CFGSEL_NONE = 0x0000;
+    static const uint16_t CFGSEL_SUBNET4 = 0x0001;
+    static const uint16_t CFGSEL_SUBNET6 = 0x0002;
+    static const uint16_t CFGSEL_SUBNET = 0x0003;
+    static const uint16_t CFGSEL_ALL4 = 0x0001;
+    static const uint16_t CFGSEL_ALL6 = 0x0002;
+    static const uint16_t CFGSEL_DDNS = 0x0004;
+    static const uint16_t CFGSEL_ALL = 0xFFFF;
 
     /// @brief logging specific information
     LoggingInfoStorage logging_info_;

src/lib/dhcpsrv/tests/configuration_unittest.cc

@@ -108,6 +108,12 @@ public:
     /// from @c CfgMgr to @c Configuration.
     void clearSubnets();
 
+    /// @brief Enable/disable DDNS.
+    ///
+    /// @param enable A boolean value indicating if the DDNS should be
+    /// enabled (true) or disabled (false).
+    void enableDDNS(const bool enable);
+
     /// @brief Stores configuration.
     Configuration conf_;
     /// @brief A collection of IPv4 subnets used by unit tests.
@@ -141,6 +147,11 @@ ConfigurationTest::clearSubnets() {
     CfgMgr::instance().deleteSubnets6();
 }
 
+void
+ConfigurationTest::enableDDNS(const bool enable) {
+    CfgMgr::instance().getD2ClientConfig()->enableUpdates(enable);
+}
+
 // Check that by default there are no logging entries
 TEST_F(ConfigurationTest, basic) {
     EXPECT_TRUE(conf_.logging_info_.empty());
@@ -171,6 +182,21 @@ TEST_F(ConfigurationTest, loggingInfo) {
     EXPECT_EQ(2097152, conf_.logging_info_[0].destinations_[0].maxsize_);
 }
 
+// Check that the configuration summary including information about the status
+// of DDNS is returned.
+TEST_F(ConfigurationTest, summaryDDNS) {
+    EXPECT_EQ("DDNS: disabled",
+              conf_.getConfigSummary(Configuration::CFGSEL_DDNS));
+
+    enableDDNS(true);
+    EXPECT_EQ("DDNS: enabled",
+              conf_.getConfigSummary(Configuration::CFGSEL_DDNS));
+
+    enableDDNS(false);
+    EXPECT_EQ("no IPv4 subnets!; no IPv6 subnets!; DDNS: disabled",
+              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+}
+
 // Check that the configuration summary including information about added
 // subnets is returned.
 TEST_F(ConfigurationTest, summarySubnets) {
@@ -180,49 +206,49 @@ TEST_F(ConfigurationTest, summarySubnets) {
     // Initially, there are no subnets added but it should be explicitly
     // reported when we query for information about the subnets.
     EXPECT_EQ("no IPv4 subnets!; no IPv6 subnets!",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET));
 
     // If we just want information about IPv4 subnets, there should be no
     // mention of IPv6 subnets, even though there are none added.
     EXPECT_EQ("no IPv4 subnets!",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL4));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET4));
 
     // If we just want information about IPv6 subnets, there should be no
     // mention of IPv4 subnets, even though there are none added.
     EXPECT_EQ("no IPv6 subnets!",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL6));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET6));
 
     // Add IPv4 subnet and make sure it is reported.
     addSubnet4(0);
     EXPECT_EQ("added IPv4 subnets: 1",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL4));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET4));
     EXPECT_EQ("added IPv4 subnets: 1; no IPv6 subnets!",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET));
 
     // Add IPv6 subnet and make sure it is reported.
     addSubnet6(0);
     EXPECT_EQ("added IPv6 subnets: 1",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL6));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET6));
     EXPECT_EQ("added IPv4 subnets: 1; added IPv6 subnets: 1",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET));
 
     // Add one more subnet and make sure the bumped value is only
     // for IPv4, but not for IPv6.
     addSubnet4(1);
     EXPECT_EQ("added IPv4 subnets: 2; added IPv6 subnets: 1",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET));
     EXPECT_EQ("added IPv4 subnets: 2",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL4));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET4));
 
     addSubnet6(1);
     EXPECT_EQ("added IPv4 subnets: 2; added IPv6 subnets: 2",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET));
 
     // Remove all subnets and make sure that there are no reported subnets
     // back again.
     clearSubnets();
     EXPECT_EQ("no IPv4 subnets!; no IPv6 subnets!",
-              conf_.getConfigSummary(Configuration::CFGSEL_ALL));
+              conf_.getConfigSummary(Configuration::CFGSEL_SUBNET));
 }
 
 } // end of anonymous namespace